adding missing files

author: icebaker <icebaker@proton.me> 2023-05-13 18:51:02 -0300
committer: icebaker <icebaker@proton.me> 2023-05-13 18:51:02 -0300
commit: 1fbdb24fff7cd84b5506cb0c7092fdcdc867ec12 (patch)
tree: d5d815cae646002f4833439d07c36bf9c1f68ed7
parent: 62939e4baafde86d0ef599f1c7dc07cce95b8a73 (diff)
14 files changed, 6729 insertions, 0 deletions
diff --git a/components/adapter.rb b/components/adapter.rb
new file mode 100644
index 0000000..b906a27
--- /dev/null
+++ b/components/adapter.rb
@@ -0,0 +1,40 @@
+# frozen_string_literal: true
+
+require 'sweet-moon'
+
+module NanoBot
+  module Components
+    class Adapter
+      def self.apply(_direction, params)
+        content = params[:content]
+
+        if params[:fennel] && params[:lua]
+          raise StandardError, 'Adapter conflict: You can only use either Lua or Fennel, not both.'
+        end
+
+        if params[:fennel]
+          content = fennel(content, params[:fennel])
+        elsif params[:lua]
+          content = lua(content, params[:lua])
+        end
+
+        "#{params[:prefix]}#{content}#{params[:suffix]}"
+      end
+
+      def self.fennel(content, expression)
+        path = "#{File.expand_path('../static/fennel', __dir__)}/?.lua"
+        state = SweetMoon::State.new(package_path: path).fennel
+        state.fennel.eval("(set _G.adapter (fn [content] #{expression}))")
+        adapter = state.get(:adapter)
+        adapter.call([content])
+      end
+
+      def self.lua(content, expression)
+        state = SweetMoon::State.new
+        state.eval("adapter = function(content) return #{expression}; end")
+        adapter = state.get(:adapter)
+        adapter.call([content])
+      end
+    end
+  end
+end
diff --git a/logic/cartridge/adapters.rb b/logic/cartridge/adapters.rb
new file mode 100644
index 0000000..bc8ddaf
--- /dev/null
+++ b/logic/cartridge/adapters.rb
@@ -0,0 +1,30 @@
+# frozen_string_literal: true
+
+require_relative '../helpers/hash'
+require_relative './default'
+
+module NanoBot
+  module Logic
+    module Cartridge
+      module Adapter
+        def self.expression(cartridge, interface, direction, language)
+          adapter = [
+            {
+              exists: (Helpers::Hash.fetch(cartridge, [:interfaces, direction, :adapter]) || {}).key?(language),
+              value: Helpers::Hash.fetch(cartridge, [:interfaces, direction, :adapter, language])
+            },
+            {
+              exists: (Helpers::Hash.fetch(cartridge,
+                                           [:interfaces, interface, direction, :adapter]) || {}).key?(language),
+              value: Helpers::Hash.fetch(cartridge, [:interfaces, interface, direction, :adapter, language])
+            }
+          ].filter { |candidate| candidate[:exists] }.last
+
+          return nil if adapter.nil?
+
+          adapter[:value]
+        end
+      end
+    end
+  end
+end
diff --git a/logic/cartridge/affixes.rb b/logic/cartridge/affixes.rb
new file mode 100644
index 0000000..0b40fa2
--- /dev/null
+++ b/logic/cartridge/affixes.rb
@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+require_relative '../helpers/hash'
+require_relative './default'
+
+module NanoBot
+  module Logic
+    module Cartridge
+      module Affixes
+        def self.get(cartridge, interface, direction, kind)
+          affix = [
+            {
+              exists: (Helpers::Hash.fetch(cartridge, [:interfaces, direction]) || {}).key?(kind),
+              value: Helpers::Hash.fetch(cartridge, [:interfaces, direction, kind])
+            },
+            {
+              exists: (Helpers::Hash.fetch(cartridge, [:interfaces, interface, direction]) || {}).key?(kind),
+              value: Helpers::Hash.fetch(cartridge, [:interfaces, interface, direction, kind])
+            }
+          ].filter { |candidate| candidate[:exists] }.last
+
+          if affix.nil?
+            return Helpers::Hash.fetch(
+              Default.instance.values, [:interfaces, interface, direction, kind]
+            )
+          end
+
+          affix[:value]
+        end
+      end
+    end
+  end
+end
diff --git a/logic/cartridge/default.rb b/logic/cartridge/default.rb
new file mode 100644
index 0000000..43d45d4
--- /dev/null
+++ b/logic/cartridge/default.rb
@@ -0,0 +1,34 @@
+# frozen_string_literal: true
+
+require 'yaml'
+require 'singleton'
+
+require_relative '../helpers/hash'
+
+module NanoBot
+  module Logic
+    module Cartridge
+      class Default
+        include Singleton
+
+        def values
+          return @values if @values
+
+          path = File.expand_path('../../static/cartridges/default.yml', __dir__)
+          cartridge = YAML.safe_load(File.read(path), permitted_classes: [Symbol])
+          @values = Logic::Helpers::Hash.symbolize_keys(cartridge)
+          @values
+        end
+
+        def baseline
+          return @baseline if @baseline
+
+          path = File.expand_path('../../static/cartridges/baseline.yml', __dir__)
+          cartridge = YAML.safe_load(File.read(path), permitted_classes: [Symbol])
+          @baseline = Logic::Helpers::Hash.symbolize_keys(cartridge)
+          @baseline
+        end
+      end
+    end
+  end
+end
diff --git a/logic/cartridge/interaction.rb b/logic/cartridge/interaction.rb
new file mode 100644
index 0000000..160d818
--- /dev/null
+++ b/logic/cartridge/interaction.rb
@@ -0,0 +1,38 @@
+# frozen_string_literal: true
+
+require 'sweet-moon'
+
+require_relative './affixes'
+require_relative './adapters'
+
+module NanoBot
+  module Logic
+    module Cartridge
+      module Interaction
+        def self.input(cartridge, interface, content)
+          lua = Adapter.expression(cartridge, interface, :input, :lua)
+          fennel = Adapter.expression(cartridge, interface, :input, :fennel)
+
+          prefix = Affixes.get(cartridge, interface, :input, :prefix)
+          suffix = Affixes.get(cartridge, interface, :input, :suffix)
+
+          { content:, prefix:, suffix:, lua:, fennel: }
+        end
+
+        def self.output(cartridge, interface, result, streaming, _finished)
+          if streaming
+            result[:message] = { content: result[:message], lua: nil, fennel: nil }
+            return result
+          end
+
+          lua = Adapter.expression(cartridge, interface, :output, :lua)
+          fennel = Adapter.expression(cartridge, interface, :output, :fennel)
+
+          result[:message] = { content: result[:message], lua:, fennel: }
+
+          result
+        end
+      end
+    end
+  end
+end
diff --git a/logic/cartridge/streaming.rb b/logic/cartridge/streaming.rb
new file mode 100644
index 0000000..a0f8700
--- /dev/null
+++ b/logic/cartridge/streaming.rb
@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+require_relative '../helpers/hash'
+
+module NanoBot
+  module Logic
+    module Cartridge
+      module Streaming
+        def self.enabled?(cartridge, interface)
+          return false if Helpers::Hash.fetch(cartridge, %i[provider settings stream]) == false
+
+          specific_interface = Helpers::Hash.fetch(cartridge, [:interfaces, interface, :output, :stream])
+
+          return specific_interface unless specific_interface.nil?
+
+          interface = Helpers::Hash.fetch(cartridge, %i[interfaces output stream])
+
+          return interface unless interface.nil?
+
+          true
+        end
+      end
+    end
+  end
+end
diff --git a/spec/data/cartridges/affixes.yml b/spec/data/cartridges/affixes.yml
new file mode 100644
index 0000000..f593cfe
--- /dev/null
+++ b/spec/data/cartridges/affixes.yml
@@ -0,0 +1,22 @@
+---
+interfaces:
+  input:
+    prefix: A
+    suffix: B
+  output:
+    prefix: C
+    suffix: D
+  repl:
+    input:
+      prefix: E
+      suffix: F
+    output:
+      prefix: G
+      suffix: H
+  eval:
+    input:
+      prefix: I
+      suffix: J
+    output:
+      prefix: K
+      suffix: L
diff --git a/spec/data/cartridges/streaming.yml b/spec/data/cartridges/streaming.yml
new file mode 100644
index 0000000..8234d34
--- /dev/null
+++ b/spec/data/cartridges/streaming.yml
@@ -0,0 +1,14 @@
+---
+interfaces:
+  output:
+    stream: true
+  repl:
+    output:
+      stream: true
+  eval:
+    output:
+      stream: true
+
+provider:
+  settings:
+    stream: true
diff --git a/spec/logic/cartridge/affixes_spec.rb b/spec/logic/cartridge/affixes_spec.rb
new file mode 100644
index 0000000..8f08e1d
--- /dev/null
+++ b/spec/logic/cartridge/affixes_spec.rb
@@ -0,0 +1,91 @@
+# frozen_string_literal: true
+
+require 'yaml'
+
+require_relative '../../../logic/cartridge/affixes'
+
+RSpec.describe NanoBot::Logic::Cartridge::Affixes do
+  context 'interfaces' do
+    let(:cartridge) { load_cartridge('affixes.yml') }
+
+    it 'gets the expected affixes' do
+      expect(described_class.get(cartridge, :repl, :input, :prefix)).to eq('E')
+      expect(described_class.get(cartridge, :repl, :input, :suffix)).to eq('F')
+      expect(described_class.get(cartridge, :repl, :output, :prefix)).to eq('G')
+      expect(described_class.get(cartridge, :repl, :output, :suffix)).to eq('H')
+
+      expect(described_class.get(cartridge, :eval, :input, :prefix)).to eq('I')
+      expect(described_class.get(cartridge, :eval, :input, :suffix)).to eq('J')
+      expect(described_class.get(cartridge, :eval, :output, :prefix)).to eq('K')
+      expect(described_class.get(cartridge, :eval, :output, :suffix)).to eq('L')
+    end
+  end
+
+  context 'interfaces fallback' do
+    let(:cartridge) { load_cartridge('affixes.yml') }
+
+    it 'gets the expected affixes' do
+      cartridge[:interfaces][:repl][:input].delete(:prefix)
+      cartridge[:interfaces][:repl][:input].delete(:suffix)
+      cartridge[:interfaces][:eval][:input].delete(:prefix)
+      cartridge[:interfaces][:eval][:input].delete(:suffix)
+
+      cartridge[:interfaces][:repl][:output].delete(:prefix)
+      cartridge[:interfaces][:repl][:output].delete(:suffix)
+      cartridge[:interfaces][:eval][:output].delete(:prefix)
+      cartridge[:interfaces][:eval][:output].delete(:suffix)
+
+      expect(described_class.get(cartridge, :repl, :input, :prefix)).to eq('A')
+      expect(described_class.get(cartridge, :repl, :input, :suffix)).to eq('B')
+      expect(described_class.get(cartridge, :repl, :output, :prefix)).to eq('C')
+      expect(described_class.get(cartridge, :repl, :output, :suffix)).to eq('D')
+
+      expect(described_class.get(cartridge, :eval, :input, :prefix)).to eq('A')
+      expect(described_class.get(cartridge, :eval, :input, :suffix)).to eq('B')
+      expect(described_class.get(cartridge, :eval, :output, :prefix)).to eq('C')
+      expect(described_class.get(cartridge, :eval, :output, :suffix)).to eq('D')
+    end
+  end
+
+  context 'interfaces nil' do
+    let(:cartridge) { load_cartridge('affixes.yml') }
+
+    it 'gets the expected affixes' do
+      cartridge[:interfaces][:repl][:input][:prefix] = nil
+      cartridge[:interfaces][:repl][:input][:suffix] = nil
+      cartridge[:interfaces][:eval][:input][:prefix] = nil
+      cartridge[:interfaces][:eval][:input][:suffix] = nil
+
+      cartridge[:interfaces][:repl][:output][:prefix] = nil
+      cartridge[:interfaces][:repl][:output][:suffix] = nil
+      cartridge[:interfaces][:eval][:output][:prefix] = nil
+      cartridge[:interfaces][:eval][:output][:suffix] = nil
+
+      expect(described_class.get(cartridge, :repl, :input, :prefix)).to be_nil
+      expect(described_class.get(cartridge, :repl, :input, :suffix)).to be_nil
+      expect(described_class.get(cartridge, :repl, :output, :prefix)).to be_nil
+      expect(described_class.get(cartridge, :repl, :output, :suffix)).to be_nil
+
+      expect(described_class.get(cartridge, :eval, :input, :prefix)).to be_nil
+      expect(described_class.get(cartridge, :eval, :input, :suffix)).to be_nil
+      expect(described_class.get(cartridge, :eval, :output, :prefix)).to be_nil
+      expect(described_class.get(cartridge, :eval, :output, :suffix)).to be_nil
+    end
+  end
+
+  context 'default' do
+    let(:cartridge) { {} }
+
+    it 'gets the expected affixes' do
+      expect(described_class.get(cartridge, :repl, :input, :prefix)).to be_nil
+      expect(described_class.get(cartridge, :repl, :input, :suffix)).to be_nil
+      expect(described_class.get(cartridge, :repl, :output, :prefix)).to eq("\n")
+      expect(described_class.get(cartridge, :repl, :output, :suffix)).to eq("\n")
+
+      expect(described_class.get(cartridge, :eval, :input, :prefix)).to be_nil
+      expect(described_class.get(cartridge, :eval, :input, :suffix)).to be_nil
+      expect(described_class.get(cartridge, :eval, :output, :prefix)).to be_nil
+      expect(described_class.get(cartridge, :eval, :output, :suffix)).to eq("\n")
+    end
+  end
+end
diff --git a/spec/logic/cartridge/interaction_spec.rb b/spec/logic/cartridge/interaction_spec.rb
new file mode 100644
index 0000000..347ac45
--- /dev/null
+++ b/spec/logic/cartridge/interaction_spec.rb
@@ -0,0 +1,47 @@
+# frozen_string_literal: true
+
+require 'yaml'
+
+require_relative '../../../logic/cartridge/interaction'
+
+RSpec.describe NanoBot::Logic::Cartridge::Interaction do
+  context 'input' do
+    let(:cartridge) { load_cartridge('affixes.yml') }
+
+    it 'prepares the input' do
+      expect(described_class.input(cartridge, :repl, 'hello')).to eq(
+        { content: 'hello', fennel: nil, lua: nil, prefix: 'E', suffix: 'F' }
+      )
+
+      expect(described_class.input({}, :repl, 'hello')).to eq(
+        { content: 'hello', fennel: nil, lua: nil, prefix: nil, suffix: nil }
+      )
+
+      expect(described_class.input(cartridge, :eval, 'hello')).to eq(
+        { content: 'hello', fennel: nil, lua: nil, prefix: 'I', suffix: 'J' }
+      )
+
+      expect(described_class.input({}, :eval, 'hello')).to eq(
+        { content: 'hello', fennel: nil, lua: nil, prefix: nil, suffix: nil }
+      )
+    end
+
+    it 'prepares the non-streamming output' do
+      expect(described_class.output(cartridge, :repl, { message: 'hello' }, false, true)).to eq(
+        { message: { content: 'hello', fennel: nil, lua: nil } }
+      )
+
+      expect(described_class.output({}, :repl, { message: 'hello' }, false, true)).to eq(
+        { message: { content: 'hello', fennel: nil, lua: nil } }
+      )
+
+      expect(described_class.output(cartridge, :eval, { message: 'hello' }, false, true)).to eq(
+        { message: { content: 'hello', fennel: nil, lua: nil } }
+      )
+
+      expect(described_class.output({}, :eval, { message: 'hello' }, false, true)).to eq(
+        { message: { content: 'hello', fennel: nil, lua: nil } }
+      )
+    end
+  end
+end
diff --git a/spec/logic/cartridge/streaming_spec.rb b/spec/logic/cartridge/streaming_spec.rb
new file mode 100644
index 0000000..e5ad012
--- /dev/null
+++ b/spec/logic/cartridge/streaming_spec.rb
@@ -0,0 +1,75 @@
+# frozen_string_literal: true
+
+require 'yaml'
+
+require_relative '../../../logic/cartridge/streaming'
+
+RSpec.describe NanoBot::Logic::Cartridge::Streaming do
+  context 'provider' do
+    let(:cartridge) { load_cartridge('streaming.yml') }
+
+    it 'checks if stream is enabled' do
+      cartridge[:provider][:settings][:stream] = false
+      expect(described_class.enabled?(cartridge, :repl)).to be(false)
+    end
+  end
+
+  context 'repl' do
+    let(:cartridge) { load_cartridge('streaming.yml') }
+
+    it 'checks if stream is enabled' do
+      cartridge[:interfaces][:repl][:output][:stream] = false
+      expect(described_class.enabled?(cartridge, :repl)).to be(false)
+    end
+  end
+
+  context 'interface + repl' do
+    let(:cartridge) { load_cartridge('streaming.yml') }
+
+    it 'checks if stream is enabled' do
+      cartridge[:interfaces][:output][:stream] = false
+      cartridge[:interfaces][:repl][:output][:stream] = true
+      expect(described_class.enabled?(cartridge, :repl)).to be(true)
+    end
+  end
+
+  context 'interface' do
+    let(:cartridge) { load_cartridge('streaming.yml') }
+
+    it 'checks if stream is enabled' do
+      cartridge[:interfaces][:output][:stream] = false
+      cartridge[:interfaces][:repl][:output].delete(:stream)
+      expect(described_class.enabled?(cartridge, :repl)).to be(false)
+    end
+  end
+
+  context '- repl' do
+    let(:cartridge) { load_cartridge('streaming.yml') }
+
+    it 'checks if stream is enabled' do
+      cartridge[:interfaces][:repl][:output].delete(:stream)
+      expect(described_class.enabled?(cartridge, :repl)).to be(true)
+    end
+  end
+
+  context '- interface' do
+    let(:cartridge) { load_cartridge('streaming.yml') }
+
+    it 'checks if stream is enabled' do
+      cartridge[:interfaces][:output].delete(:stream)
+      cartridge[:interfaces][:repl][:output].delete(:stream)
+      expect(described_class.enabled?(cartridge, :repl)).to be(true)
+    end
+  end
+
+  context '- provider' do
+    let(:cartridge) { load_cartridge('streaming.yml') }
+
+    it 'checks if stream is enabled' do
+      cartridge[:provider][:settings].delete(:stream)
+      cartridge[:interfaces][:output].delete(:stream)
+      cartridge[:interfaces][:repl][:output].delete(:stream)
+      expect(described_class.enabled?(cartridge, :repl)).to be(true)
+    end
+  end
+end
diff --git a/spec/logic/helpers/hash_spec.rb b/spec/logic/helpers/hash_spec.rb
new file mode 100644
index 0000000..09012c8
--- /dev/null
+++ b/spec/logic/helpers/hash_spec.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+require_relative '../../../logic/helpers/hash'
+
+RSpec.describe NanoBot::Logic::Helpers::Hash do
+  it 'symbolizes keys' do
+    expect(described_class.symbolize_keys({ 'a' => 'b', 'c' => { 'd' => ['e'] } })).to eq(
+      { a: 'b', c: { d: ['e'] } }
+    )
+
+    expect(described_class.fetch({ a: 'b', c: { d: ['e'] } }, %i[c d])).to eq(
+      ['e']
+    )
+
+    expect(described_class.fetch({ a: 'b', c: { d: ['e'] } }, %i[c e])).to be_nil
+
+    expect(described_class.fetch({ a: 'b', c: { d: ['e'] } }, %i[a b])).to be_nil
+  end
+end
diff --git a/static/cartridges/baseline.yml b/static/cartridges/baseline.yml
new file mode 100644
index 0000000..b5eed62
--- /dev/null
+++ b/static/cartridges/baseline.yml
@@ -0,0 +1,14 @@
+---
+meta:
+  name: Unknown
+  author: Nobody
+  version: 0.0.0
+
+provider:
+  name: openai
+  settings:
+    model: gpt-3.5-turbo
+    credentials:
+      address: ENV/OPENAI_API_ADDRESS
+      access-token: ENV/OPENAI_API_ACCESS_TOKEN
+      user-identifier: ENV/OPENAI_API_USER_IDENTIFIER
diff --git a/static/fennel/fennel.lua b/static/fennel/fennel.lua
new file mode 100644
index 0000000..08dd0a4
--- /dev/null
+++ b/static/fennel/fennel.lua
@@ -0,0 +1,6247 @@
+package.preload["fennel.repl"] = package.preload["fennel.repl"] or function(...)
+  local utils = require("fennel.utils")
+  local parser = require("fennel.parser")
+  local compiler = require("fennel.compiler")
+  local specials = require("fennel.specials")
+  local view = require("fennel.view")
+  local unpack = (table.unpack or _G.unpack)
+  local function default_read_chunk(parser_state)
+    local function _631_()
+      if (0 < parser_state["stack-size"]) then
+        return ".."
+      else
+        return ">> "
+      end
+    end
+    io.write(_631_())
+    io.flush()
+    local input = io.read()
+    return (input and (input .. "\n"))
+  end
+  local function default_on_values(xs)
+    io.write(table.concat(xs, "\9"))
+    return io.write("\n")
+  end
+  local function default_on_error(errtype, err, lua_source)
+    local function _633_()
+      local _632_ = errtype
+      if (_632_ == "Lua Compile") then
+        return ("Bad code generated - likely a bug with the compiler:\n" .. "--- Generated Lua Start ---\n" .. lua_source .. "--- Generated Lua End ---\n")
+      elseif (_632_ == "Runtime") then
+        return (compiler.traceback(tostring(err), 4) .. "\n")
+      elseif true then
+        local _ = _632_
+        return ("%s error: %s\n"):format(errtype, tostring(err))
+      else
+        return nil
+      end
+    end
+    return io.write(_633_())
+  end
+  local function splice_save_locals(env, lua_source, scope)
+    local saves
+    do
+      local tbl_16_auto = {}
+      local i_17_auto = #tbl_16_auto
+      for name in pairs(env.___replLocals___) do
+        local val_18_auto = ("local %s = ___replLocals___['%s']"):format(name, name)
+        if (nil ~= val_18_auto) then
+          i_17_auto = (i_17_auto + 1)
+          do end (tbl_16_auto)[i_17_auto] = val_18_auto
+        else
+        end
+      end
+      saves = tbl_16_auto
+    end
+    local binds
+    do
+      local tbl_16_auto = {}
+      local i_17_auto = #tbl_16_auto
+      for _, name in pairs(scope.manglings) do
+        local val_18_auto
+        if not scope.gensyms[name] then
+          val_18_auto = ("___replLocals___['%s'] = %s"):format(name, name)
+        else
+          val_18_auto = nil
+        end
+        if (nil ~= val_18_auto) then
+          i_17_auto = (i_17_auto + 1)
+          do end (tbl_16_auto)[i_17_auto] = val_18_auto
+        else
+        end
+      end
+      binds = tbl_16_auto
+    end
+    local gap
+    if lua_source:find("\n") then
+      gap = "\n"
+    else
+      gap = " "
+    end
+    local function _639_()
+      if next(saves) then
+        return (table.concat(saves, " ") .. gap)
+      else
+        return ""
+      end
+    end
+    local function _642_()
+      local _640_, _641_ = lua_source:match("^(.*)[\n ](return .*)$")
+      if ((nil ~= _640_) and (nil ~= _641_)) then
+        local body = _640_
+        local _return = _641_
+        return (body .. gap .. table.concat(binds, " ") .. gap .. _return)
+      elseif true then
+        local _ = _640_
+        return lua_source
+      else
+        return nil
+      end
+    end
+    return (_639_() .. _642_())
+  end
+  local function completer(env, scope, text)
+    local max_items = 2000
+    local seen = {}
+    local matches = {}
+    local input_fragment = text:gsub(".*[%s)(]+", "")
+    local stop_looking_3f = false
+    local function add_partials(input, tbl, prefix)
+      local scope_first_3f = ((tbl == env) or (tbl == env.___replLocals___))
+      local tbl_16_auto = matches
+      local i_17_auto = #tbl_16_auto
+      local function _644_()
+        if scope_first_3f then
+          return scope.manglings
+        else
+          return tbl
+        end
+      end
+      for k, is_mangled in utils.allpairs(_644_()) do
+        if (max_items <= #matches) then break end
+        local val_18_auto
+        do
+          local lookup_k
+          if scope_first_3f then
+            lookup_k = is_mangled
+          else
+            lookup_k = k
+          end
+          if ((type(k) == "string") and (input == k:sub(0, #input)) and not seen[k] and ((":" ~= prefix:sub(-1)) or ("function" == type(tbl[lookup_k])))) then
+            seen[k] = true
+            val_18_auto = (prefix .. k)
+          else
+            val_18_auto = nil
+          end
+        end
+        if (nil ~= val_18_auto) then
+          i_17_auto = (i_17_auto + 1)
+          do end (tbl_16_auto)[i_17_auto] = val_18_auto
+        else
+        end
+      end
+      return tbl_16_auto
+    end
+    local function descend(input, tbl, prefix, add_matches, method_3f)
+      local splitter
+      if method_3f then
+        splitter = "^([^:]+):(.*)"
+      else
+        splitter = "^([^.]+)%.(.*)"
+      end
+      local head, tail = input:match(splitter)
+      local raw_head = (scope.manglings[head] or head)
+      if (type(tbl[raw_head]) == "table") then
+        stop_looking_3f = true
+        if method_3f then
+          return add_partials(tail, tbl[raw_head], (prefix .. head .. ":"))
+        else
+          return add_matches(tail, tbl[raw_head], (prefix .. head))
+        end
+      else
+        return nil
+      end
+    end
+    local function add_matches(input, tbl, prefix)
+      local prefix0
+      if prefix then
+        prefix0 = (prefix .. ".")
+      else
+        prefix0 = ""
+      end
+      if (not input:find("%.") and input:find(":")) then
+        return descend(input, tbl, prefix0, add_matches, true)
+      elseif not input:find("%.") then
+        return add_partials(input, tbl, prefix0)
+      else
+        return descend(input, tbl, prefix0, add_matches, false)
+      end
+    end
+    for _, source in ipairs({scope.specials, scope.macros, (env.___replLocals___ or {}), env, env._G}) do
+      if stop_looking_3f then break end
+      add_matches(input_fragment, source)
+    end
+    return matches
+  end
+  local commands = {}
+  local function command_3f(input)
+    return input:match("^%s*,")
+  end
+  local function command_docs()
+    local _653_
+    do
+      local tbl_16_auto = {}
+      local i_17_auto = #tbl_16_auto
+      for name, f in pairs(commands) do
+        local val_18_auto = ("  ,%s - %s"):format(name, ((compiler.metadata):get(f, "fnl/docstring") or "undocumented"))
+        if (nil ~= val_18_auto) then
+          i_17_auto = (i_17_auto + 1)
+          do end (tbl_16_auto)[i_17_auto] = val_18_auto
+        else
+        end
+      end
+      _653_ = tbl_16_auto
+    end
+    return table.concat(_653_, "\n")
+  end
+  commands.help = function(_, _0, on_values)
+    return on_values({("Welcome to Fennel.\nThis is the REPL where you can enter code to be evaluated.\nYou can also run these repl commands:\n\n" .. command_docs() .. "\n  ,exit - Leave the repl.\n\nUse ,doc something to see descriptions for individual macros and special forms.\n\nFor more information about the language, see https://fennel-lang.org/reference")})
+  end
+  do end (compiler.metadata):set(commands.help, "fnl/docstring", "Show this message.")
+  local function reload(module_name, env, on_values, on_error)
+    local _655_, _656_ = pcall(specials["load-code"]("return require(...)", env), module_name)
+    if ((_655_ == true) and (nil ~= _656_)) then
+      local old = _656_
+      local _
+      package.loaded[module_name] = nil
+      _ = nil
+      local ok, new = pcall(require, module_name)
+      local new0
+      if not ok then
+        on_values({new})
+        new0 = old
+      else
+        new0 = new
+      end
+      specials["macro-loaded"][module_name] = nil
+      if ((type(old) == "table") and (type(new0) == "table")) then
+        for k, v in pairs(new0) do
+          old[k] = v
+        end
+        for k in pairs(old) do
+          if (nil == (new0)[k]) then
+            old[k] = nil
+          else
+          end
+        end
+        package.loaded[module_name] = old
+      else
+      end
+      return on_values({"ok"})
+    elseif ((_655_ == false) and (nil ~= _656_)) then
+      local msg = _656_
+      if msg:match("loop or previous error loading module") then
+        package.loaded[module_name] = nil
+        return reload(module_name, env, on_values, on_error)
+      elseif (specials["macro-loaded"])[module_name] then
+        specials["macro-loaded"][module_name] = nil
+        return nil
+      else
+        local function _661_()
+          local _660_ = msg:gsub("\n.*", "")
+          return _660_
+        end
+        return on_error("Runtime", _661_())
+      end
+    else
+      return nil
+    end
+  end
+  local function run_command(read, on_error, f)
+    local _664_, _665_, _666_ = pcall(read)
+    if ((_664_ == true) and (_665_ == true) and (nil ~= _666_)) then
+      local val = _666_
+      return f(val)
+    elseif (_664_ == false) then
+      return on_error("Parse", "Couldn't parse input.")
+    else
+      return nil
+    end
+  end
+  commands.reload = function(env, read, on_values, on_error)
+    local function _668_(_241)
+      return reload(tostring(_241), env, on_values, on_error)
+    end
+    return run_command(read, on_error, _668_)
+  end
+  do end (compiler.metadata):set(commands.reload, "fnl/docstring", "Reload the specified module.")
+  commands.reset = function(env, _, on_values)
+    env.___replLocals___ = {}
+    return on_values({"ok"})
+  end
+  do end (compiler.metadata):set(commands.reset, "fnl/docstring", "Erase all repl-local scope.")
+  commands.complete = function(env, read, on_values, on_error, scope, chars)
+    local function _669_()
+      return on_values(completer(env, scope, string.char(unpack(chars)):gsub(",complete +", ""):sub(1, -2)))
+    end
+    return run_command(read, on_error, _669_)
+  end
+  do end (compiler.metadata):set(commands.complete, "fnl/docstring", "Print all possible completions for a given input symbol.")
+  local function apropos_2a(pattern, tbl, prefix, seen, names)
+    for name, subtbl in pairs(tbl) do
+      if (("string" == type(name)) and (package ~= subtbl)) then
+        local _670_ = type(subtbl)
+        if (_670_ == "function") then
+          if ((prefix .. name)):match(pattern) then
+            table.insert(names, (prefix .. name))
+          else
+          end
+        elseif (_670_ == "table") then
+          if not seen[subtbl] then
+            local _673_
+            do
+              local _672_ = seen
+              _672_[subtbl] = true
+              _673_ = _672_
+            end
+            apropos_2a(pattern, subtbl, (prefix .. name:gsub("%.", "/") .. "."), _673_, names)
+          else
+          end
+        else
+        end
+      else
+      end
+    end
+    return names
+  end
+  local function apropos(pattern)
+    local names = apropos_2a(pattern, package.loaded, "", {}, {})
+    local tbl_16_auto = {}
+    local i_17_auto = #tbl_16_auto
+    for _, name in ipairs(names) do
+      local val_18_auto = name:gsub("^_G%.", "")
+      if (nil ~= val_18_auto) then
+        i_17_auto = (i_17_auto + 1)
+        do end (tbl_16_auto)[i_17_auto] = val_18_auto
+      else
+      end
+    end
+    return tbl_16_auto
+  end
+  commands.apropos = function(_env, read, on_values, on_error, _scope)
+    local function _678_(_241)
+      return on_values(apropos(tostring(_241)))
+    end
+    return run_command(read, on_error, _678_)
+  end
+  do end (compiler.metadata):set(commands.apropos, "fnl/docstring", "Print all functions matching a pattern in all loaded modules.")
+  local function apropos_follow_path(path)
+    local paths
+    do
+      local tbl_16_auto = {}
+      local i_17_auto = #tbl_16_auto
+      for p in path:gmatch("[^%.]+") do
+        local val_18_auto = p
+        if (nil ~= val_18_auto) then
+          i_17_auto = (i_17_auto + 1)
+          do end (tbl_16_auto)[i_17_auto] = val_18_auto
+        else
+        end
+      end
+      paths = tbl_16_auto
+    end
+    local tgt = package.loaded
+    for _, path0 in ipairs(paths) do
+      if (nil == tgt) then break end
+      local _681_
+      do
+        local _680_ = path0:gsub("%/", ".")
+        _681_ = _680_
+      end
+      tgt = tgt[_681_]
+    end
+    return tgt
+  end
+  local function apropos_doc(pattern)
+    local tbl_16_auto = {}
+    local i_17_auto = #tbl_16_auto
+    for _, path in ipairs(apropos(".*")) do
+      local val_18_auto
+      do
+        local tgt = apropos_follow_path(path)
+        if ("function" == type(tgt)) then
+          local _682_ = (compiler.metadata):get(tgt, "fnl/docstring")
+          if (nil ~= _682_) then
+            local docstr = _682_
+            val_18_auto = (docstr:match(pattern) and path)
+          else
+            val_18_auto = nil
+          end
+        else
+          val_18_auto = nil
+        end
+      end
+      if (nil ~= val_18_auto) then
+        i_17_auto = (i_17_auto + 1)
+        do end (tbl_16_auto)[i_17_auto] = val_18_auto
+      else
+      end
+    end
+    return tbl_16_auto
+  end
+  commands["apropos-doc"] = function(_env, read, on_values, on_error, _scope)
+    local function _686_(_241)
+      return on_values(apropos_doc(tostring(_241)))
+    end
+    return run_command(read, on_error, _686_)
+  end
+  do end (compiler.metadata):set(commands["apropos-doc"], "fnl/docstring", "Print all functions that match the pattern in their docs")
+  local function apropos_show_docs(on_values, pattern)
+    for _, path in ipairs(apropos(pattern)) do
+      local tgt = apropos_follow_path(path)
+      if (("function" == type(tgt)) and (compiler.metadata):get(tgt, "fnl/docstring")) then
+        on_values(specials.doc(tgt, path))
+        on_values()
+      else
+      end
+    end
+    return nil
+  end
+  commands["apropos-show-docs"] = function(_env, read, on_values, on_error)
+    local function _688_(_241)
+      return apropos_show_docs(on_values, tostring(_241))
+    end
+    return run_command(read, on_error, _688_)
+  end
+  do end (compiler.metadata):set(commands["apropos-show-docs"], "fnl/docstring", "Print all documentations matching a pattern in function name")
+  local function resolve(identifier, _689_, scope)
+    local _arg_690_ = _689_
+    local ___replLocals___ = _arg_690_["___replLocals___"]
+    local env = _arg_690_
+    local e
+    local function _691_(_241, _242)
+      return (___replLocals___[_242] or env[_242])
+    end
+    e = setmetatable({}, {__index = _691_})
+    local _692_, _693_ = pcall(compiler["compile-string"], tostring(identifier), {scope = scope})
+    if ((_692_ == true) and (nil ~= _693_)) then
+      local code = _693_
+      return specials["load-code"](code, e)()
+    else
+      return nil
+    end
+  end
+  commands.find = function(env, read, on_values, on_error, scope)
+    local function _695_(_241)
+      local _696_
+      do
+        local _697_ = utils["sym?"](_241)
+        if (nil ~= _697_) then
+          local _698_ = resolve(_697_, env, scope)
+          if (nil ~= _698_) then
+            _696_ = debug.getinfo(_698_)
+          else
+            _696_ = _698_
+          end
+        else
+          _696_ = _697_
+        end
+      end
+      if ((_G.type(_696_) == "table") and ((_696_).what == "Lua") and (nil ~= (_696_).source) and (nil ~= (_696_).linedefined) and (nil ~= (_696_).short_src)) then
+        local source = (_696_).source
+        local line = (_696_).linedefined
+        local src = (_696_).short_src
+        local fnlsrc
+        do
+          local t_701_ = compiler.sourcemap
+          if (nil ~= t_701_) then
+            t_701_ = (t_701_)[source]
+          else
+          end
+          if (nil ~= t_701_) then
+            t_701_ = (t_701_)[line]
+          else
+          end
+          if (nil ~= t_701_) then
+            t_701_ = (t_701_)[2]
+          else
+          end
+          fnlsrc = t_701_
+        end
+        return on_values({string.format("%s:%s", src, (fnlsrc or line))})
+      elseif (_696_ == nil) then
+        return on_error("Repl", "Unknown value")
+      elseif true then
+        local _ = _696_
+        return on_error("Repl", "No source info")
+      else
+        return nil
+      end
+    end
+    return run_command(read, on_error, _695_)
+  end
+  do end (compiler.metadata):set(commands.find, "fnl/docstring", "Print the filename and line number for a given function")
+  commands.doc = function(env, read, on_values, on_error, scope)
+    local function _706_(_241)
+      local name = tostring(_241)
+      local path = (utils["multi-sym?"](name) or {name})
+      local ok_3f, target = nil, nil
+      local function _707_()
+        return (utils["get-in"](scope.specials, path) or utils["get-in"](scope.macros, path) or resolve(name, env, scope))
+      end
+      ok_3f, target = pcall(_707_)
+      if ok_3f then
+        return on_values({specials.doc(target, name)})
+      else
+        return on_error("Repl", "Could not resolve value for docstring lookup")
+      end
+    end
+    return run_command(read, on_error, _706_)
+  end
+  do end (compiler.metadata):set(commands.doc, "fnl/docstring", "Print the docstring and arglist for a function, macro, or special form.")
+  commands.compile = function(env, read, on_values, on_error, scope)
+    local function _709_(_241)
+      local allowedGlobals = specials["current-global-names"](env)
+      local ok_3f, result = pcall(compiler.compile, _241, {env = env, scope = scope, allowedGlobals = allowedGlobals})
+      if ok_3f then
+        return on_values({result})
+      else
+        return on_error("Repl", ("Error compiling expression: " .. result))
+      end
+    end
+    return run_command(read, on_error, _709_)
+  end
+  do end (compiler.metadata):set(commands.compile, "fnl/docstring", "compiles the expression into lua and prints the result.")
+  local function load_plugin_commands(plugins)
+    for _, plugin in ipairs((plugins or {})) do
+      for name, f in pairs(plugin) do
+        local _711_ = name:match("^repl%-command%-(.*)")
+        if (nil ~= _711_) then
+          local cmd_name = _711_
+          commands[cmd_name] = (commands[cmd_name] or f)
+        else
+        end
+      end
+    end
+    return nil
+  end
+  local function run_command_loop(input, read, loop, env, on_values, on_error, scope, chars)
+    local command_name = input:match(",([^%s/]+)")
+    do
+      local _713_ = commands[command_name]
+      if (nil ~= _713_) then
+        local command = _713_
+        command(env, read, on_values, on_error, scope, chars)
+      elseif true then
+        local _ = _713_
+        if ("exit" ~= command_name) then
+          on_values({"Unknown command", command_name})
+        else
+        end
+      else
+      end
+    end
+    if ("exit" ~= command_name) then
+      return loop()
+    else
+      return nil
+    end
+  end
+  local function try_readline_21(opts, ok, readline)
+    if ok then
+      if readline.set_readline_name then
+        readline.set_readline_name("fennel")
+      else
+      end
+      readline.set_options({keeplines = 1000, histfile = ""})
+      opts.readChunk = function(parser_state)
+        local prompt
+        if (0 < parser_state["stack-size"]) then
+          prompt = ".. "
+        else
+          prompt = ">> "
+        end
+        local str = readline.readline(prompt)
+        if str then
+          return (str .. "\n")
+        else
+          return nil
+        end
+      end
+      local completer0 = nil
+      opts.registerCompleter = function(repl_completer)
+        completer0 = repl_completer
+        return nil
+      end
+      local function repl_completer(text, from, to)
+        if completer0 then
+          readline.set_completion_append_character("")
+          return completer0(text:sub(from, to))
+        else
+          return {}
+        end
+      end
+      readline.set_complete_function(repl_completer)
+      return readline
+    else
+      return nil
+    end
+  end
+  local function should_use_readline_3f(opts)
+    return (("dumb" ~= os.getenv("TERM")) and not opts.readChunk and not opts.registerCompleter)
+  end
+  local function repl(_3foptions)
+    local old_root_options = utils.root.options
+    local _let_722_ = utils.copy(_3foptions)
+    local _3ffennelrc = _let_722_["fennelrc"]
+    local opts = _let_722_
+    local _
+    opts.fennelrc = nil
+    _ = nil
+    local readline = (should_use_readline_3f(opts) and try_readline_21(opts, pcall(require, "readline")))
+    local _0
+    if _3ffennelrc then
+      _0 = _3ffennelrc()
+    else
+      _0 = nil
+    end
+    local env = specials["wrap-env"]((opts.env or rawget(_G, "_ENV") or _G))
+    local save_locals_3f = (opts.saveLocals ~= false)
+    local read_chunk = (opts.readChunk or default_read_chunk)
+    local on_values = (opts.onValues or default_on_values)
+    local on_error = (opts.onError or default_on_error)
+    local pp = (opts.pp or view)
+    local byte_stream, clear_stream = parser.granulate(read_chunk)
+    local chars = {}
+    local read, reset = nil, nil
+    local function _724_(parser_state)
+      local c = byte_stream(parser_state)
+      table.insert(chars, c)
+      return c
+    end
+    read, reset = parser.parser(_724_)
+    opts.env, opts.scope = env, compiler["make-scope"]()
+    opts.useMetadata = (opts.useMetadata ~= false)
+    if (opts.allowedGlobals == nil) then
+      opts.allowedGlobals = specials["current-global-names"](env)
+    else
+    end
+    if opts.registerCompleter then
+      local function _728_()
+        local _726_ = env
+        local _727_ = opts.scope
+        local function _729_(...)
+          return completer(_726_, _727_, ...)
+        end
+        return _729_
+      end
+      opts.registerCompleter(_728_())
+    else
+    end
+    load_plugin_commands(opts.plugins)
+    if save_locals_3f then
+      local function newindex(t, k, v)
+        if opts.scope.unmanglings[k] then
+          return rawset(t, k, v)
+        else
+          return nil
+        end
+      end
+      env.___replLocals___ = setmetatable({}, {__newindex = newindex})
+    else
+    end
+    local function print_values(...)
+      local vals = {...}
+      local out = {}
+      env._, env.__ = vals[1], vals
+      for i = 1, select("#", ...) do
+        table.insert(out, pp(vals[i]))
+      end
+      return on_values(out)
+    end
+    local function loop()
+      for k in pairs(chars) do
+        chars[k] = nil
+      end
+      reset()
+      local ok, parser_not_eof_3f, x = pcall(read)
+      local src_string = string.char(unpack(chars))
+      local readline_not_eof_3f = (not readline or (src_string ~= "(null)"))
+      local not_eof_3f = (readline_not_eof_3f and parser_not_eof_3f)
+      if not ok then
+        on_error("Parse", not_eof_3f)
+        clear_stream()
+        return loop()
+      elseif command_3f(src_string) then
+        return run_command_loop(src_string, read, loop, env, on_values, on_error, opts.scope, chars)
+      else
+        if not_eof_3f then
+          do
+            local _733_, _734_ = nil, nil
+            local function _736_()
+              local _735_ = opts
+              _735_["source"] = src_string
+              return _735_
+            end
+            _733_, _734_ = pcall(compiler.compile, x, _736_())
+            if ((_733_ == false) and (nil ~= _734_)) then
+              local msg = _734_
+              clear_stream()
+              on_error("Compile", msg)
+            elseif ((_733_ == true) and (nil ~= _734_)) then
+              local src = _734_
+              local src0
+              if save_locals_3f then
+                src0 = splice_save_locals(env, src, opts.scope)
+              else
+                src0 = src
+              end
+              local _738_, _739_ = pcall(specials["load-code"], src0, env)
+              if ((_738_ == false) and (nil ~= _739_)) then
+                local msg = _739_
+                clear_stream()
+                on_error("Lua Compile", msg, src0)
+              elseif (true and (nil ~= _739_)) then
+                local _1 = _738_
+                local chunk = _739_
+                local function _740_()
+                  return print_values(chunk())
+                end
+                local function _741_()
+                  local function _742_(...)
+                    return on_error("Runtime", ...)
+                  end
+                  return _742_
+                end
+                xpcall(_740_, _741_())
+              else
+              end
+            else
+            end
+          end
+          utils.root.options = old_root_options
+          return loop()
+        else
+          return nil
+        end
+      end
+    end
+    loop()
+    if readline then
+      return readline.save_history()
+    else
+      return nil
+    end
+  end
+  return repl
+end
+package.preload["fennel.specials"] = package.preload["fennel.specials"] or function(...)
+  local utils = require("fennel.utils")
+  local view = require("fennel.view")
+  local parser = require("fennel.parser")
+  local compiler = require("fennel.compiler")
+  local unpack = (table.unpack or _G.unpack)
+  local SPECIALS = compiler.scopes.global.specials
+  local function wrap_env(env)
+    local function _424_(_, key)
+      if utils["string?"](key) then
+        return env[compiler["global-unmangling"](key)]
+      else
+        return env[key]
+      end
+    end
+    local function _426_(_, key, value)
+      if utils["string?"](key) then
+        env[compiler["global-unmangling"](key)] = value
+        return nil
+      else
+        env[key] = value
+        return nil
+      end
+    end
+    local function _428_()
+      local function putenv(k, v)
+        local _429_
+        if utils["string?"](k) then
+          _429_ = compiler["global-unmangling"](k)
+        else
+          _429_ = k
+        end
+        return _429_, v
+      end
+      return next, utils.kvmap(env, putenv), nil
+    end
+    return setmetatable({}, {__index = _424_, __newindex = _426_, __pairs = _428_})
+  end
+  local function current_global_names(_3fenv)
+    local mt
+    do
+      local _431_ = getmetatable(_3fenv)
+      if ((_G.type(_431_) == "table") and (nil ~= (_431_).__pairs)) then
+        local mtpairs = (_431_).__pairs
+        local tbl_13_auto = {}
+        for k, v in mtpairs(_3fenv) do
+          local k_14_auto, v_15_auto = k, v
+          if ((k_14_auto ~= nil) and (v_15_auto ~= nil)) then
+            tbl_13_auto[k_14_auto] = v_15_auto
+          else
+          end
+        end
+        mt = tbl_13_auto
+      elseif (_431_ == nil) then
+        mt = (_3fenv or _G)
+      else
+        mt = nil
+      end
+    end
+    return (mt and utils.kvmap(mt, compiler["global-unmangling"]))
+  end
+  local function load_code(code, _3fenv, _3ffilename)
+    local env = (_3fenv or rawget(_G, "_ENV") or _G)
+    local _434_, _435_ = rawget(_G, "setfenv"), rawget(_G, "loadstring")
+    if ((nil ~= _434_) and (nil ~= _435_)) then
+      local setfenv = _434_
+      local loadstring = _435_
+      local f = assert(loadstring(code, _3ffilename))
+      local _436_ = f
+      setfenv(_436_, env)
+      return _436_
+    elseif true then
+      local _ = _434_
+      return assert(load(code, _3ffilename, "t", env))
+    else
+      return nil
+    end
+  end
+  local function doc_2a(tgt, name)
+    if not tgt then
+      return (name .. " not found")
+    else
+      local docstring = (((compiler.metadata):get(tgt, "fnl/docstring") or "#<undocumented>")):gsub("\n$", ""):gsub("\n", "\n  ")
+      local mt = getmetatable(tgt)
+      if ((type(tgt) == "function") or ((type(mt) == "table") and (type(mt.__call) == "function"))) then
+        local arglist = table.concat(((compiler.metadata):get(tgt, "fnl/arglist") or {"#<unknown-arguments>"}), " ")
+        local _438_
+        if (0 < #arglist) then
+          _438_ = " "
+        else
+          _438_ = ""
+        end
+        return string.format("(%s%s%s)\n  %s", name, _438_, arglist, docstring)
+      else
+        return string.format("%s\n  %s", name, docstring)
+      end
+    end
+  end
+  local function doc_special(name, arglist, docstring, body_form_3f)
+    compiler.metadata[SPECIALS[name]] = {["fnl/arglist"] = arglist, ["fnl/docstring"] = docstring, ["fnl/body-form?"] = body_form_3f}
+    return nil
+  end
+  local function compile_do(ast, scope, parent, _3fstart)
+    local start = (_3fstart or 2)
+    local len = #ast
+    local sub_scope = compiler["make-scope"](scope)
+    for i = start, len do
+      compiler.compile1(ast[i], sub_scope, parent, {nval = 0})
+    end
+    return nil
+  end
+  SPECIALS["do"] = function(ast, scope, parent, opts, _3fstart, _3fchunk, _3fsub_scope, _3fpre_syms)
+    local start = (_3fstart or 2)
+    local sub_scope = (_3fsub_scope or compiler["make-scope"](scope))
+    local chunk = (_3fchunk or {})
+    local len = #ast
+    local retexprs = {returned = true}
+    local function compile_body(outer_target, outer_tail, outer_retexprs)
+      if (len < start) then
+        compiler.compile1(nil, sub_scope, chunk, {tail = outer_tail, target = outer_target})
+      else
+        for i = start, len do
+          local subopts = {nval = (((i ~= len) and 0) or opts.nval), tail = (((i == len) and outer_tail) or nil), target = (((i == len) and outer_target) or nil)}
+          local _ = utils["propagate-options"](opts, subopts)
+          local subexprs = compiler.compile1(ast[i], sub_scope, chunk, subopts)
+          if (i ~= len) then
+            compiler["keep-side-effects"](subexprs, parent, nil, ast[i])
+          else
+          end
+        end
+      end
+      compiler.emit(parent, chunk, ast)
+      compiler.emit(parent, "end", ast)
+      utils.hook("do", ast, sub_scope)
+      return (outer_retexprs or retexprs)
+    end
+    if (opts.target or (opts.nval == 0) or opts.tail) then
+      compiler.emit(parent, "do", ast)
+      return compile_body(opts.target, opts.tail)
+    elseif opts.nval then
+      local syms = {}
+      for i = 1, opts.nval do
+        local s = ((_3fpre_syms and (_3fpre_syms)[i]) or compiler.gensym(scope))
+        do end (syms)[i] = s
+        retexprs[i] = utils.expr(s, "sym")
+      end
+      local outer_target = table.concat(syms, ", ")
+      compiler.emit(parent, string.format("local %s", outer_target), ast)
+      compiler.emit(parent, "do", ast)
+      return compile_body(outer_target, opts.tail)
+    else
+      local fname = compiler.gensym(scope)
+      local fargs
+      if scope.vararg then
+        fargs = "..."
+      else
+        fargs = ""
+      end
+      compiler.emit(parent, string.format("local function %s(%s)", fname, fargs), ast)
+      return compile_body(nil, true, utils.expr((fname .. "(" .. fargs .. ")"), "statement"))
+    end
+  end
+  doc_special("do", {"..."}, "Evaluate multiple forms; return last value.", true)
+  SPECIALS.values = function(ast, scope, parent)
+    local len = #ast
+    local exprs = {}
+    for i = 2, len do
+      local subexprs = compiler.compile1(ast[i], scope, parent, {nval = ((i ~= len) and 1)})
+      table.insert(exprs, subexprs[1])
+      if (i == len) then
+        for j = 2, #subexprs do
+          table.insert(exprs, subexprs[j])
+        end
+      else
+      end
+    end
+    return exprs
+  end
+  doc_special("values", {"..."}, "Return multiple values from a function. Must be in tail position.")
+  local function __3estack(stack, tbl)
+    for k, v in pairs(tbl) do
+      local _447_ = stack
+      table.insert(_447_, k)
+      table.insert(_447_, v)
+    end
+    return stack
+  end
+  local function literal_3f(val)
+    local res = true
+    if utils["list?"](val) then
+      res = false
+    elseif utils["table?"](val) then
+      local stack = __3estack({}, val)
+      for _, elt in ipairs(stack) do
+        if not res then break end
+        if utils["list?"](elt) then
+          res = false
+        elseif utils["table?"](elt) then
+          __3estack(stack, elt)
+        else
+        end
+      end
+    else
+    end
+    return res
+  end
+  local function compile_value(v)
+    local opts = {nval = 1, tail = false}
+    local scope = compiler["make-scope"]()
+    local chunk = {}
+    local _let_450_ = compiler.compile1(v, scope, chunk, opts)
+    local _let_451_ = _let_450_[1]
+    local v0 = _let_451_[1]
+    return v0
+  end
+  local function insert_meta(meta, k, v)
+    local view_opts = {["escape-newlines?"] = true, ["line-length"] = math.huge, ["one-line?"] = true}
+    compiler.assert((type(k) == "string"), ("expected string keys in metadata table, got: %s"):format(view(k, view_opts)))
+    compiler.assert(literal_3f(v), ("expected literal value in metadata table, got: %s %s"):format(view(k, view_opts), view(v, view_opts)))
+    local _452_ = meta
+    table.insert(_452_, view(k))
+    local function _453_()
+      if ("string" == type(v)) then
+        return view(v, view_opts)
+      else
+        return compile_value(v)
+      end
+    end
+    table.insert(_452_, _453_())
+    return _452_
+  end
+  local function insert_arglist(meta, arg_list)
+    local view_opts = {["one-line?"] = true, ["escape-newlines?"] = true, ["line-length"] = math.huge}
+    local _454_ = meta
+    table.insert(_454_, "\"fnl/arglist\"")
+    local function _455_(_241)
+      return view(view(_241, view_opts))
+    end
+    table.insert(_454_, ("{" .. table.concat(utils.map(arg_list, _455_), ", ") .. "}"))
+    return _454_
+  end
+  local function set_fn_metadata(f_metadata, parent, fn_name)
+    if utils.root.options.useMetadata then
+      local meta_fields = {}
+      for k, v in utils.stablepairs(f_metadata) do
+        if (k == "fnl/arglist") then
+          insert_arglist(meta_fields, v)
+        else
+          insert_meta(meta_fields, k, v)
+        end
+      end
+      local meta_str = ("require(\"%s\").metadata"):format((utils.root.options.moduleName or "fennel"))
+      return compiler.emit(parent, ("pcall(function() %s:setall(%s, %s) end)"):format(meta_str, fn_name, table.concat(meta_fields, ", ")))
+    else
+      return nil
+    end
+  end
+  local function get_fn_name(ast, scope, fn_name, multi)
+    if (fn_name and (fn_name[1] ~= "nil")) then
+      local _458_
+      if not multi then
+        _458_ = compiler["declare-local"](fn_name, {}, scope, ast)
+      else
+        _458_ = (compiler["symbol-to-expression"](fn_name, scope))[1]
+      end
+      return _458_, not multi, 3
+    else
+      return nil, true, 2
+    end
+  end
+  local function compile_named_fn(ast, f_scope, f_chunk, parent, index, fn_name, local_3f, arg_name_list, f_metadata)
+    for i = (index + 1), #ast do
+      compiler.compile1(ast[i], f_scope, f_chunk, {nval = (((i ~= #ast) and 0) or nil), tail = (i == #ast)})
+    end
+    local _461_
+    if local_3f then
+      _461_ = "local function %s(%s)"
+    else
+      _461_ = "%s = function(%s)"
+    end
+    compiler.emit(parent, string.format(_461_, fn_name, table.concat(arg_name_list, ", ")), ast)
+    compiler.emit(parent, f_chunk, ast)
+    compiler.emit(parent, "end", ast)
+    set_fn_metadata(f_metadata, parent, fn_name)
+    utils.hook("fn", ast, f_scope)
+    return utils.expr(fn_name, "sym")
+  end
+  local function compile_anonymous_fn(ast, f_scope, f_chunk, parent, index, arg_name_list, f_metadata, scope)
+    local fn_name = compiler.gensym(scope)
+    return compile_named_fn(ast, f_scope, f_chunk, parent, index, fn_name, true, arg_name_list, f_metadata)
+  end
+  local function assoc_table_3f(t)
+    local len = #t
+    local nxt, t0, k = pairs(t)
+    local function _463_()
+      if (len == 0) then
+        return k
+      else
+        return len
+      end
+    end
+    return (nil ~= nxt(t0, _463_()))
+  end
+  local function get_function_metadata(ast, arg_list, index)
+    local f_metadata = {["fnl/arglist"] = arg_list}
+    local index_2a = (index + 1)
+    local expr = ast[index_2a]
+    if (utils["string?"](expr) and (index_2a < #ast)) then
+      local _465_
+      do
+        local _464_ = f_metadata
+        _464_["fnl/docstring"] = expr
+        _465_ = _464_
+      end
+      return _465_, index_2a
+    elseif (utils["table?"](expr) and (index_2a < #ast) and assoc_table_3f(expr)) then
+      local _466_
+      do
+        local tbl_13_auto = f_metadata
+        for k, v in pairs(expr) do
+          local k_14_auto, v_15_auto = k, v
+          if ((k_14_auto ~= nil) and (v_15_auto ~= nil)) then
+            tbl_13_auto[k_14_auto] = v_15_auto
+          else
+          end
+        end
+        _466_ = tbl_13_auto
+      end
+      return _466_, index_2a
+    else
+      return f_metadata, index
+    end
+  end
+  SPECIALS.fn = function(ast, scope, parent)
+    local f_scope
+    do
+      local _469_ = compiler["make-scope"](scope)
+      do end (_469_)["vararg"] = false
+      f_scope = _469_
+    end
+    local f_chunk = {}
+    local fn_sym = utils["sym?"](ast[2])
+    local multi = (fn_sym and utils["multi-sym?"](fn_sym[1]))
+    local fn_name, local_3f, index = get_fn_name(ast, scope, fn_sym, multi)
+    local arg_list = compiler.assert(utils["table?"](ast[index]), "expected parameters table", ast)
+    compiler.assert((not multi or not multi["multi-sym-method-call"]), ("unexpected multi symbol " .. tostring(fn_name)), fn_sym)
+    local function destructure_arg(arg)
+      local raw = utils.sym(compiler.gensym(scope))
+      local declared = compiler["declare-local"](raw, {}, f_scope, ast)
+      compiler.destructure(arg, raw, ast, f_scope, f_chunk, {declaration = true, nomulti = true, symtype = "arg"})
+      return declared
+    end
+    local function destructure_amp(i)
+      compiler.assert((i == (#arg_list - 1)), "expected rest argument before last parameter", arg_list[(i + 1)], arg_list)
+      f_scope.vararg = true
+      compiler.destructure(arg_list[#arg_list], {utils.varg()}, ast, f_scope, f_chunk, {declaration = true, nomulti = true, symtype = "arg"})
+      return "..."
+    end
+    local function get_arg_name(arg, i)
+      if f_scope.vararg then
+        return nil
+      elseif utils["varg?"](arg) then
+        compiler.assert((arg == arg_list[#arg_list]), "expected vararg as last parameter", ast)
+        f_scope.vararg = true
+        return "..."
+      elseif (utils.sym("&") == arg) then
+        return destructure_amp(i)
+      elseif (utils["sym?"](arg) and (tostring(arg) ~= "nil") and not utils["multi-sym?"](tostring(arg))) then
+        return compiler["declare-local"](arg, {}, f_scope, ast)
+      elseif utils["table?"](arg) then
+        return destructure_arg(arg)
+      else
+        return compiler.assert(false, ("expected symbol for function parameter: %s"):format(tostring(arg)), ast[index])
+      end
+    end
+    local arg_name_list
+    do
+      local tbl_16_auto = {}
+      local i_17_auto = #tbl_16_auto
+      for i, a in ipairs(arg_list) do
+        local val_18_auto = get_arg_name(a, i)
+        if (nil ~= val_18_auto) then
+          i_17_auto = (i_17_auto + 1)
+          do end (tbl_16_auto)[i_17_auto] = val_18_auto
+        else
+        end
+      end
+      arg_name_list = tbl_16_auto
+    end
+    local f_metadata, index0 = get_function_metadata(ast, arg_list, index)
+    if fn_name then
+      return compile_named_fn(ast, f_scope, f_chunk, parent, index0, fn_name, local_3f, arg_name_list, f_metadata)
+    else
+      return compile_anonymous_fn(ast, f_scope, f_chunk, parent, index0, arg_name_list, f_metadata, scope)
+    end
+  end
+  doc_special("fn", {"name?", "args", "docstring?", "..."}, "Function syntax. May optionally include a name and docstring or a metadata table.\nIf a name is provided, the function will be bound in the current scope.\nWhen called with the wrong number of args, excess args will be discarded\nand lacking args will be nil, use lambda for arity-checked functions.", true)
+  SPECIALS.lua = function(ast, _, parent)
+    compiler.assert(((#ast == 2) or (#ast == 3)), "expected 1 or 2 arguments", ast)
+    local _474_
+    do
+      local _473_ = utils["sym?"](ast[2])
+      if (nil ~= _473_) then
+        _474_ = tostring(_473_)
+      else
+        _474_ = _473_
+      end
+    end
+    if ("nil" ~= _474_) then
+      table.insert(parent, {ast = ast, leaf = tostring(ast[2])})
+    else
+    end
+    local _478_
+    do
+      local _477_ = utils["sym?"](ast[3])
+      if (nil ~= _477_) then
+        _478_ = tostring(_477_)
+      else
+        _478_ = _477_
+      end
+    end
+    if ("nil" ~= _478_) then
+      return tostring(ast[3])
+    else
+      return nil
+    end
+  end
+  local function dot(ast, scope, parent)
+    compiler.assert((1 < #ast), "expected table argument", ast)
+    local len = #ast
+    local _let_481_ = compiler.compile1(ast[2], scope, parent, {nval = 1})
+    local lhs = _let_481_[1]
+    if (len == 2) then
+      return tostring(lhs)
+    else
+      local indices = {}
+      for i = 3, len do
+        local index = ast[i]
+        if (utils["string?"](index) and utils["valid-lua-identifier?"](index)) then
+          table.insert(indices, ("." .. index))
+        else
+          local _let_482_ = compiler.compile1(index, scope, parent, {nval = 1})
+          local index0 = _let_482_[1]
+          table.insert(indices, ("[" .. tostring(index0) .. "]"))
+        end
+      end
+      if (tostring(lhs):find("[{\"0-9]") or ("nil" == tostring(lhs))) then
+        return ("(" .. tostring(lhs) .. ")" .. table.concat(indices))
+      else
+        return (tostring(lhs) .. table.concat(indices))
+      end
+    end
+  end
+  SPECIALS["."] = dot
+  doc_special(".", {"tbl", "key1", "..."}, "Look up key1 in tbl table. If more args are provided, do a nested lookup.")
+  SPECIALS.global = function(ast, scope, parent)
+    compiler.assert((#ast == 3), "expected name and value", ast)
+    compiler.destructure(ast[2], ast[3], ast, scope, parent, {forceglobal = true, nomulti = true, symtype = "global"})
+    return nil
+  end
+  doc_special("global", {"name", "val"}, "Set name as a global with val.")
+  SPECIALS.set = function(ast, scope, parent)
+    compiler.assert((#ast == 3), "expected name and value", ast)
+    compiler.destructure(ast[2], ast[3], ast, scope, parent, {noundef = true, symtype = "set"})
+    return nil
+  end
+  doc_special("set", {"name", "val"}, "Set a local variable to a new value. Only works on locals using var.")
+  local function set_forcibly_21_2a(ast, scope, parent)
+    compiler.assert((#ast == 3), "expected name and value", ast)
+    compiler.destructure(ast[2], ast[3], ast, scope, parent, {forceset = true, symtype = "set"})
+    return nil
+  end
+  SPECIALS["set-forcibly!"] = set_forcibly_21_2a
+  local function local_2a(ast, scope, parent)
+    compiler.assert((#ast == 3), "expected name and value", ast)
+    compiler.destructure(ast[2], ast[3], ast, scope, parent, {declaration = true, nomulti = true, symtype = "local"})
+    return nil
+  end
+  SPECIALS["local"] = local_2a
+  doc_special("local", {"name", "val"}, "Introduce new top-level immutable local.")
+  SPECIALS.var = function(ast, scope, parent)
+    compiler.assert((#ast == 3), "expected name and value", ast)
+    compiler.destructure(ast[2], ast[3], ast, scope, parent, {declaration = true, isvar = true, nomulti = true, symtype = "var"})
+    return nil
+  end
+  doc_special("var", {"name", "val"}, "Introduce new mutable local.")
+  local function kv_3f(t)
+    local _486_
+    do
+      local tbl_16_auto = {}
+      local i_17_auto = #tbl_16_auto
+      for k in pairs(t) do
+        local val_18_auto
+        if ("number" ~= type(k)) then
+          val_18_auto = k
+        else
+          val_18_auto = nil
+        end
+        if (nil ~= val_18_auto) then
+          i_17_auto = (i_17_auto + 1)
+          do end (tbl_16_auto)[i_17_auto] = val_18_auto
+        else
+        end
+      end
+      _486_ = tbl_16_auto
+    end
+    return (_486_)[1]
+  end
+  SPECIALS.let = function(ast, scope, parent, opts)
+    local bindings = ast[2]
+    local pre_syms = {}
+    compiler.assert((utils["table?"](bindings) and not kv_3f(bindings)), "expected binding sequence", bindings)
+    compiler.assert(((#bindings % 2) == 0), "expected even number of name/value bindings", ast[2])
+    compiler.assert((3 <= #ast), "expected body expression", ast[1])
+    for _ = 1, (opts.nval or 0) do
+      table.insert(pre_syms, compiler.gensym(scope))
+    end
+    local sub_scope = compiler["make-scope"](scope)
+    local sub_chunk = {}
+    for i = 1, #bindings, 2 do
+      compiler.destructure(bindings[i], bindings[(i + 1)], ast, sub_scope, sub_chunk, {declaration = true, nomulti = true, symtype = "let"})
+    end
+    return SPECIALS["do"](ast, scope, parent, opts, 3, sub_chunk, sub_scope, pre_syms)
+  end
+  doc_special("let", {"[name1 val1 ... nameN valN]", "..."}, "Introduces a new scope in which a given set of local bindings are used.", true)
+  local function get_prev_line(parent)
+    if ("table" == type(parent)) then
+      return get_prev_line((parent.leaf or parent[#parent]))
+    else
+      return (parent or "")
+    end
+  end
+  local function disambiguate_3f(rootstr, parent)
+    local function _491_()
+      local _490_ = get_prev_line(parent)
+      if (nil ~= _490_) then
+        local prev_line = _490_
+        return prev_line:match("%)$")
+      else
+        return nil
+      end
+    end
+    return (rootstr:match("^{") or _491_())
+  end
+  SPECIALS.tset = function(ast, scope, parent)
+    compiler.assert((3 < #ast), "expected table, key, and value arguments", ast)
+    local root = (compiler.compile1(ast[2], scope, parent, {nval = 1}))[1]
+    local keys = {}
+    for i = 3, (#ast - 1) do
+      local _let_493_ = compiler.compile1(ast[i], scope, parent, {nval = 1})
+      local key = _let_493_[1]
+      table.insert(keys, tostring(key))
+    end
+    local value = (compiler.compile1(ast[#ast], scope, parent, {nval = 1}))[1]
+    local rootstr = tostring(root)
+    local fmtstr
+    if disambiguate_3f(rootstr, parent) then
+      fmtstr = "do end (%s)[%s] = %s"
+    else
+      fmtstr = "%s[%s] = %s"
+    end
+    return compiler.emit(parent, fmtstr:format(rootstr, table.concat(keys, "]["), tostring(value)), ast)
+  end
+  doc_special("tset", {"tbl", "key1", "...", "keyN", "val"}, "Set the value of a table field. Can take additional keys to set\nnested values, but all parents must contain an existing table.")
+  local function calculate_target(scope, opts)
+    if not (opts.tail or opts.target or opts.nval) then
+      return "iife", true, nil
+    elseif (opts.nval and (opts.nval ~= 0) and not opts.target) then
+      local accum = {}
+      local target_exprs = {}
+      for i = 1, opts.nval do
+        local s = compiler.gensym(scope)
+        do end (accum)[i] = s
+        target_exprs[i] = utils.expr(s, "sym")
+      end
+      return "target", opts.tail, table.concat(accum, ", "), target_exprs
+    else
+      return "none", opts.tail, opts.target
+    end
+  end
+  local function if_2a(ast, scope, parent, opts)
+    compiler.assert((2 < #ast), "expected condition and body", ast)
+    local do_scope = compiler["make-scope"](scope)
+    local branches = {}
+    local wrapper, inner_tail, inner_target, target_exprs = calculate_target(scope, opts)
+    local body_opts = {nval = opts.nval, tail = inner_tail, target = inner_target}
+    local function compile_body(i)
+      local chunk = {}
+      local cscope = compiler["make-scope"](do_scope)
+      compiler["keep-side-effects"](compiler.compile1(ast[i], cscope, chunk, body_opts), chunk, nil, ast[i])
+      return {chunk = chunk, scope = cscope}
+    end
+    if (1 == (#ast % 2)) then
+      table.insert(ast, utils.sym("nil"))
+    else
+    end
+    for i = 2, (#ast - 1), 2 do
+      local condchunk = {}
+      local res = compiler.compile1(ast[i], do_scope, condchunk, {nval = 1})
+      local cond = res[1]
+      local branch = compile_body((i + 1))
+      branch.cond = cond
+      branch.condchunk = condchunk
+      branch.nested = ((i ~= 2) and (next(condchunk, nil) == nil))
+      table.insert(branches, branch)
+    end
+    local else_branch = compile_body(#ast)
+    local s = compiler.gensym(scope)
+    local buffer = {}
+    local last_buffer = buffer
+    for i = 1, #branches do
+      local branch = branches[i]
+      local fstr
+      if not branch.nested then
+        fstr = "if %s then"
+      else
+        fstr = "elseif %s then"
+      end
+      local cond = tostring(branch.cond)
+      local cond_line = fstr:format(cond)
+      if branch.nested then
+        compiler.emit(last_buffer, branch.condchunk, ast)
+      else
+        for _, v in ipairs(branch.condchunk) do
+          compiler.emit(last_buffer, v, ast)
+        end
+      end
+      compiler.emit(last_buffer, cond_line, ast)
+      compiler.emit(last_buffer, branch.chunk, ast)
+      if (i == #branches) then
+        compiler.emit(last_buffer, "else", ast)
+        compiler.emit(last_buffer, else_branch.chunk, ast)
+        compiler.emit(last_buffer, "end", ast)
+      elseif not (branches[(i + 1)]).nested then
+        local next_buffer = {}
+        compiler.emit(last_buffer, "else", ast)
+        compiler.emit(last_buffer, next_buffer, ast)
+        compiler.emit(last_buffer, "end", ast)
+        last_buffer = next_buffer
+      else
+      end
+    end
+    if (wrapper == "iife") then
+      local iifeargs = ((scope.vararg and "...") or "")
+      compiler.emit(parent, ("local function %s(%s)"):format(tostring(s), iifeargs), ast)
+      compiler.emit(parent, buffer, ast)
+      compiler.emit(parent, "end", ast)
+      return utils.expr(("%s(%s)"):format(tostring(s), iifeargs), "statement")
+    elseif (wrapper == "none") then
+      for i = 1, #buffer do
+        compiler.emit(parent, buffer[i], ast)
+      end
+      return {returned = true}
+    else
+      compiler.emit(parent, ("local %s"):format(inner_target), ast)
+      for i = 1, #buffer do
+        compiler.emit(parent, buffer[i], ast)
+      end
+      return target_exprs
+    end
+  end
+  SPECIALS["if"] = if_2a
+  doc_special("if", {"cond1", "body1", "...", "condN", "bodyN"}, "Conditional form.\nTakes any number of condition/body pairs and evaluates the first body where\nthe condition evaluates to truthy. Similar to cond in other lisps.")
+  local function remove_until_condition(bindings)
+    local last_item = bindings[(#bindings - 1)]
+    if ((utils["sym?"](last_item) and (tostring(last_item) == "&until")) or ("until" == last_item)) then
+      table.remove(bindings, (#bindings - 1))
+      return table.remove(bindings)
+    else
+      return nil
+    end
+  end
+  local function compile_until(condition, scope, chunk)
+    if condition then
+      local _let_502_ = compiler.compile1(condition, scope, chunk, {nval = 1})
+      local condition_lua = _let_502_[1]
+      return compiler.emit(chunk, ("if %s then break end"):format(tostring(condition_lua)), utils.expr(condition, "expression"))
+    else
+      return nil
+    end
+  end
+  SPECIALS.each = function(ast, scope, parent)
+    compiler.assert((3 <= #ast), "expected body expression", ast[1])
+    local binding = compiler.assert(utils["table?"](ast[2]), "expected binding table", ast)
+    local _ = compiler.assert((2 <= #binding), "expected binding and iterator", binding)
+    local until_condition = remove_until_condition(binding)
+    local iter = table.remove(binding, #binding)
+    local destructures = {}
+    local new_manglings = {}
+    local sub_scope = compiler["make-scope"](scope)
+    local function destructure_binding(v)
+      compiler.assert(not utils["string?"](v), ("unexpected iterator clause " .. tostring(v)), binding)
+      if utils["sym?"](v) then
+        return compiler["declare-local"](v, {}, sub_scope, ast, new_manglings)
+      else
+        local raw = utils.sym(compiler.gensym(sub_scope))
+        do end (destructures)[raw] = v
+        return compiler["declare-local"](raw, {}, sub_scope, ast)
+      end
+    end
+    local bind_vars = utils.map(binding, destructure_binding)
+    local vals = compiler.compile1(iter, scope, parent)
+    local val_names = utils.map(vals, tostring)
+    local chunk = {}
+    compiler.emit(parent, ("for %s in %s do"):format(table.concat(bind_vars, ", "), table.concat(val_names, ", ")), ast)
+    for raw, args in utils.stablepairs(destructures) do
+      compiler.destructure(args, raw, ast, sub_scope, chunk, {declaration = true, nomulti = true, symtype = "each"})
+    end
+    compiler["apply-manglings"](sub_scope, new_manglings, ast)
+    compile_until(until_condition, sub_scope, chunk)
+    compile_do(ast, sub_scope, chunk, 3)
+    compiler.emit(parent, chunk, ast)
+    return compiler.emit(parent, "end", ast)
+  end
+  doc_special("each", {"[key value (iterator)]", "..."}, "Runs the body once for each set of values provided by the given iterator.\nMost commonly used with ipairs for sequential tables or pairs for  undefined\norder, but can be used with any iterator.", true)
+  local function while_2a(ast, scope, parent)
+    local len1 = #parent
+    local condition = (compiler.compile1(ast[2], scope, parent, {nval = 1}))[1]
+    local len2 = #parent
+    local sub_chunk = {}
+    if (len1 ~= len2) then
+      for i = (len1 + 1), len2 do
+        table.insert(sub_chunk, parent[i])
+        do end (parent)[i] = nil
+      end
+      compiler.emit(parent, "while true do", ast)
+      compiler.emit(sub_chunk, ("if not %s then break end"):format(condition[1]), ast)
+    else
+      compiler.emit(parent, ("while " .. tostring(condition) .. " do"), ast)
+    end
+    compile_do(ast, compiler["make-scope"](scope), sub_chunk, 3)
+    compiler.emit(parent, sub_chunk, ast)
+    return compiler.emit(parent, "end", ast)
+  end
+  SPECIALS["while"] = while_2a
+  doc_special("while", {"condition", "..."}, "The classic while loop. Evaluates body until a condition is non-truthy.", true)
+  local function for_2a(ast, scope, parent)
+    local ranges = compiler.assert(utils["table?"](ast[2]), "expected binding table", ast)
+    local until_condition = remove_until_condition(ast[2])
+    local binding_sym = table.remove(ast[2], 1)
+    local sub_scope = compiler["make-scope"](scope)
+    local range_args = {}
+    local chunk = {}
+    compiler.assert(utils["sym?"](binding_sym), ("unable to bind %s %s"):format(type(binding_sym), tostring(binding_sym)), ast[2])
+    compiler.assert((3 <= #ast), "expected body expression", ast[1])
+    compiler.assert((#ranges <= 3), "unexpected arguments", ranges[4])
+    for i = 1, math.min(#ranges, 3) do
+      range_args[i] = tostring((compiler.compile1(ranges[i], scope, parent, {nval = 1}))[1])
+    end
+    compiler.emit(parent, ("for %s = %s do"):format(compiler["declare-local"](binding_sym, {}, sub_scope, ast), table.concat(range_args, ", ")), ast)
+    compile_until(until_condition, sub_scope, chunk)
+    compile_do(ast, sub_scope, chunk, 3)
+    compiler.emit(parent, chunk, ast)
+    return compiler.emit(parent, "end", ast)
+  end
+  SPECIALS["for"] = for_2a
+  doc_special("for", {"[index start stop step?]", "..."}, "Numeric loop construct.\nEvaluates body once for each value between start and stop (inclusive).", true)
+  local function native_method_call(ast, _scope, _parent, target, args)
+    local _let_506_ = ast
+    local _ = _let_506_[1]
+    local _0 = _let_506_[2]
+    local method_string = _let_506_[3]
+    local call_string
+    if ((target.type == "literal") or (target.type == "varg") or (target.type == "expression")) then
+      call_string = "(%s):%s(%s)"
+    else
+      call_string = "%s:%s(%s)"
+    end
+    return utils.expr(string.format(call_string, tostring(target), method_string, table.concat(args, ", ")), "statement")
+  end
+  local function nonnative_method_call(ast, scope, parent, target, args)
+    local method_string = tostring((compiler.compile1(ast[3], scope, parent, {nval = 1}))[1])
+    local args0 = {tostring(target), unpack(args)}
+    return utils.expr(string.format("%s[%s](%s)", tostring(target), method_string, table.concat(args0, ", ")), "statement")
+  end
+  local function double_eval_protected_method_call(ast, scope, parent, target, args)
+    local method_string = tostring((compiler.compile1(ast[3], scope, parent, {nval = 1}))[1])
+    local call = "(function(tgt, m, ...) return tgt[m](tgt, ...) end)(%s, %s)"
+    table.insert(args, 1, method_string)
+    return utils.expr(string.format(call, tostring(target), table.concat(args, ", ")), "statement")
+  end
+  local function method_call(ast, scope, parent)
+    compiler.assert((2 < #ast), "expected at least 2 arguments", ast)
+    local _let_508_ = compiler.compile1(ast[2], scope, parent, {nval = 1})
+    local target = _let_508_[1]
+    local args = {}
+    for i = 4, #ast do
+      local subexprs
+      local _509_
+      if (i ~= #ast) then
+        _509_ = 1
+      else
+        _509_ = nil
+      end
+      subexprs = compiler.compile1(ast[i], scope, parent, {nval = _509_})
+      utils.map(subexprs, tostring, args)
+    end
+    if (utils["string?"](ast[3]) and utils["valid-lua-identifier?"](ast[3])) then
+      return native_method_call(ast, scope, parent, target, args)
+    elseif (target.type == "sym") then
+      return nonnative_method_call(ast, scope, parent, target, args)
+    else
+      return double_eval_protected_method_call(ast, scope, parent, target, args)
+    end
+  end
+  SPECIALS[":"] = method_call
+  doc_special(":", {"tbl", "method-name", "..."}, "Call the named method on tbl with the provided args.\nMethod name doesn't have to be known at compile-time; if it is, use\n(tbl:method-name ...) instead.")
+  SPECIALS.comment = function(ast, _, parent)
+    local els = {}
+    for i = 2, #ast do
+      table.insert(els, view(ast[i], {["one-line?"] = true}))
+    end
+    return compiler.emit(parent, ("--[[ " .. table.concat(els, " ") .. " ]]"), ast)
+  end
+  doc_special("comment", {"..."}, "Comment which will be emitted in Lua output.", true)
+  local function hashfn_max_used(f_scope, i, max)
+    local max0
+    if f_scope.symmeta[("$" .. i)].used then
+      max0 = i
+    else
+      max0 = max
+    end
+    if (i < 9) then
+      return hashfn_max_used(f_scope, (i + 1), max0)
+    else
+      return max0
+    end
+  end
+  SPECIALS.hashfn = function(ast, scope, parent)
+    compiler.assert((#ast == 2), "expected one argument", ast)
+    local f_scope
+    do
+      local _514_ = compiler["make-scope"](scope)
+      do end (_514_)["vararg"] = false
+      _514_["hashfn"] = true
+      f_scope = _514_
+    end
+    local f_chunk = {}
+    local name = compiler.gensym(scope)
+    local symbol = utils.sym(name)
+    local args = {}
+    compiler["declare-local"](symbol, {}, scope, ast)
+    for i = 1, 9 do
+      args[i] = compiler["declare-local"](utils.sym(("$" .. i)), {}, f_scope, ast)
+    end
+    local function walker(idx, node, parent_node)
+      if (utils["sym?"](node) and (tostring(node) == "$...")) then
+        parent_node[idx] = utils.varg()
+        f_scope.vararg = true
+        return nil
+      else
+        return (("table" == type(node)) and (utils.sym("hashfn") ~= node[1]) and (utils["list?"](node) or utils["table?"](node)))
+      end
+    end
+    utils["walk-tree"](ast[2], walker)
+    compiler.compile1(ast[2], f_scope, f_chunk, {tail = true})
+    local max_used = hashfn_max_used(f_scope, 1, 0)
+    if f_scope.vararg then
+      compiler.assert((max_used == 0), "$ and $... in hashfn are mutually exclusive", ast)
+    else
+    end
+    local arg_str
+    if f_scope.vararg then
+      arg_str = tostring(utils.varg())
+    else
+      arg_str = table.concat(args, ", ", 1, max_used)
+    end
+    compiler.emit(parent, string.format("local function %s(%s)", name, arg_str), ast)
+    compiler.emit(parent, f_chunk, ast)
+    compiler.emit(parent, "end", ast)
+    return utils.expr(name, "sym")
+  end
+  doc_special("hashfn", {"..."}, "Function literal shorthand; args are either $... OR $1, $2, etc.")
+  local function maybe_short_circuit_protect(ast, i, name, _518_)
+    local _arg_519_ = _518_
+    local mac = _arg_519_["macros"]
+    local call = (utils["list?"](ast) and tostring(ast[1]))
+    if ((("or" == name) or ("and" == name)) and (1 < i) and (mac[call] or ("set" == call) or ("tset" == call) or ("global" == call))) then
+      return utils.list(utils.sym("do"), ast)
+    else
+      return ast
+    end
+  end
+  local function arithmetic_special(name, zero_arity, unary_prefix, ast, scope, parent)
+    local len = #ast
+    local operands = {}
+    local padded_op = (" " .. name .. " ")
+    for i = 2, len do
+      local subast = maybe_short_circuit_protect(ast[i], i, name, scope)
+      local subexprs = compiler.compile1(subast, scope, parent)
+      if (i == len) then
+        utils.map(subexprs, tostring, operands)
+      else
+        table.insert(operands, tostring(subexprs[1]))
+      end
+    end
+    local _522_ = #operands
+    if (_522_ == 0) then
+      local _524_
+      do
+        local _523_ = zero_arity
+        compiler.assert(_523_, "Expected more than 0 arguments", ast)
+        _524_ = _523_
+      end
+      return utils.expr(_524_, "literal")
+    elseif (_522_ == 1) then
+      if unary_prefix then
+        return ("(" .. unary_prefix .. padded_op .. operands[1] .. ")")
+      else
+        return operands[1]
+      end
+    elseif true then
+      local _ = _522_
+      return ("(" .. table.concat(operands, padded_op) .. ")")
+    else
+      return nil
+    end
+  end
+  local function define_arithmetic_special(name, zero_arity, unary_prefix, _3flua_name)
+    local _530_
+    do
+      local _527_ = (_3flua_name or name)
+      local _528_ = zero_arity
+      local _529_ = unary_prefix
+      local function _531_(...)
+        return arithmetic_special(_527_, _528_, _529_, ...)
+      end
+      _530_ = _531_
+    end
+    SPECIALS[name] = _530_
+    return doc_special(name, {"a", "b", "..."}, "Arithmetic operator; works the same as Lua but accepts more arguments.")
+  end
+  define_arithmetic_special("+", "0")
+  define_arithmetic_special("..", "''")
+  define_arithmetic_special("^")
+  define_arithmetic_special("-", nil, "")
+  define_arithmetic_special("*", "1")
+  define_arithmetic_special("%")
+  define_arithmetic_special("/", nil, "1")
+  define_arithmetic_special("//", nil, "1")
+  SPECIALS["or"] = function(ast, scope, parent)
+    return arithmetic_special("or", "false", nil, ast, scope, parent)
+  end
+  SPECIALS["and"] = function(ast, scope, parent)
+    return arithmetic_special("and", "true", nil, ast, scope, parent)
+  end
+  doc_special("and", {"a", "b", "..."}, "Boolean operator; works the same as Lua but accepts more arguments.")
+  doc_special("or", {"a", "b", "..."}, "Boolean operator; works the same as Lua but accepts more arguments.")
+  local function bitop_special(native_name, lib_name, zero_arity, unary_prefix, ast, scope, parent)
+    if (#ast == 1) then
+      return compiler.assert(zero_arity, "Expected more than 0 arguments.", ast)
+    else
+      local len = #ast
+      local operands = {}
+      local padded_native_name = (" " .. native_name .. " ")
+      local prefixed_lib_name = ("bit." .. lib_name)
+      for i = 2, len do
+        local subexprs
+        local _532_
+        if (i ~= len) then
+          _532_ = 1
+        else
+          _532_ = nil
+        end
+        subexprs = compiler.compile1(ast[i], scope, parent, {nval = _532_})
+        utils.map(subexprs, tostring, operands)
+      end
+      if (#operands == 1) then
+        if utils.root.options.useBitLib then
+          return (prefixed_lib_name .. "(" .. unary_prefix .. ", " .. operands[1] .. ")")
+        else
+          return ("(" .. unary_prefix .. padded_native_name .. operands[1] .. ")")
+        end
+      else
+        if utils.root.options.useBitLib then
+          return (prefixed_lib_name .. "(" .. table.concat(operands, ", ") .. ")")
+        else
+          return ("(" .. table.concat(operands, padded_native_name) .. ")")
+        end
+      end
+    end
+  end
+  local function define_bitop_special(name, zero_arity, unary_prefix, native)
+    local _542_
+    do
+      local _538_ = native
+      local _539_ = name
+      local _540_ = zero_arity
+      local _541_ = unary_prefix
+      local function _543_(...)
+        return bitop_special(_538_, _539_, _540_, _541_, ...)
+      end
+      _542_ = _543_
+    end
+    SPECIALS[name] = _542_
+    return nil
+  end
+  define_bitop_special("lshift", nil, "1", "<<")
+  define_bitop_special("rshift", nil, "1", ">>")
+  define_bitop_special("band", "0", "0", "&")
+  define_bitop_special("bor", "0", "0", "|")
+  define_bitop_special("bxor", "0", "0", "~")
+  doc_special("lshift", {"x", "n"}, "Bitwise logical left shift of x by n bits.\nOnly works in Lua 5.3+ or LuaJIT with the --use-bit-lib flag.")
+  doc_special("rshift", {"x", "n"}, "Bitwise logical right shift of x by n bits.\nOnly works in Lua 5.3+ or LuaJIT with the --use-bit-lib flag.")
+  doc_special("band", {"x1", "x2", "..."}, "Bitwise AND of any number of arguments.\nOnly works in Lua 5.3+ or LuaJIT with the --use-bit-lib flag.")
+  doc_special("bor", {"x1", "x2", "..."}, "Bitwise OR of any number of arguments.\nOnly works in Lua 5.3+ or LuaJIT with the --use-bit-lib flag.")
+  doc_special("bxor", {"x1", "x2", "..."}, "Bitwise XOR of any number of arguments.\nOnly works in Lua 5.3+ or LuaJIT with the --use-bit-lib flag.")
+  doc_special("..", {"a", "b", "..."}, "String concatenation operator; works the same as Lua but accepts more arguments.")
+  local function native_comparator(op, _544_, scope, parent)
+    local _arg_545_ = _544_
+    local _ = _arg_545_[1]
+    local lhs_ast = _arg_545_[2]
+    local rhs_ast = _arg_545_[3]
+    local _let_546_ = compiler.compile1(lhs_ast, scope, parent, {nval = 1})
+    local lhs = _let_546_[1]
+    local _let_547_ = compiler.compile1(rhs_ast, scope, parent, {nval = 1})
+    local rhs = _let_547_[1]
+    return string.format("(%s %s %s)", tostring(lhs), op, tostring(rhs))
+  end
+  local function idempotent_comparator(op, chain_op, ast, scope, parent)
+    local vals
+    do
+      local tbl_16_auto = {}
+      local i_17_auto = #tbl_16_auto
+      for i = 2, #ast do
+        local val_18_auto = tostring((compiler.compile1(ast[i], scope, parent, {nval = 1}))[1])
+        if (nil ~= val_18_auto) then
+          i_17_auto = (i_17_auto + 1)
+          do end (tbl_16_auto)[i_17_auto] = val_18_auto
+        else
+        end
+      end
+      vals = tbl_16_auto
+    end
+    local comparisons
+    do
+      local tbl_16_auto = {}
+      local i_17_auto = #tbl_16_auto
+      for i = 1, (#vals - 1) do
+        local val_18_auto = string.format("(%s %s %s)", vals[i], op, vals[(i + 1)])
+        if (nil ~= val_18_auto) then
+          i_17_auto = (i_17_auto + 1)
+          do end (tbl_16_auto)[i_17_auto] = val_18_auto
+        else
+        end
+      end
+      comparisons = tbl_16_auto
+    end
+    local chain = string.format(" %s ", (chain_op or "and"))
+    return table.concat(comparisons, chain)
+  end
+  local function double_eval_protected_comparator(op, chain_op, ast, scope, parent)
+    local arglist = {}
+    local comparisons = {}
+    local vals = {}
+    local chain = string.format(" %s ", (chain_op or "and"))
+    for i = 2, #ast do
+      table.insert(arglist, tostring(compiler.gensym(scope)))
+      table.insert(vals, tostring((compiler.compile1(ast[i], scope, parent, {nval = 1}))[1]))
+    end
+    do
+      local tbl_16_auto = comparisons
+      local i_17_auto = #tbl_16_auto
+      for i = 1, (#arglist - 1) do
+        local val_18_auto = string.format("(%s %s %s)", arglist[i], op, arglist[(i + 1)])
+        if (nil ~= val_18_auto) then
+          i_17_auto = (i_17_auto + 1)
+          do end (tbl_16_auto)[i_17_auto] = val_18_auto
+        else
+        end
+      end
+    end
+    return string.format("(function(%s) return %s end)(%s)", table.concat(arglist, ","), table.concat(comparisons, chain), table.concat(vals, ","))
+  end
+  local function define_comparator_special(name, _3flua_op, _3fchain_op)
+    do
+      local op = (_3flua_op or name)
+      local function opfn(ast, scope, parent)
+        compiler.assert((2 < #ast), "expected at least two arguments", ast)
+        if (3 == #ast) then
+          return native_comparator(op, ast, scope, parent)
+        elseif utils["every?"](utils["idempotent-expr?"], {unpack(ast, 2)}) then
+          return idempotent_comparator(op, _3fchain_op, ast, scope, parent)
+        else
+          return double_eval_protected_comparator(op, _3fchain_op, ast, scope, parent)
+        end
+      end
+      SPECIALS[name] = opfn
+    end
+    return doc_special(name, {"a", "b", "..."}, "Comparison operator; works the same as Lua but accepts more arguments.")
+  end
+  define_comparator_special(">")
+  define_comparator_special("<")
+  define_comparator_special(">=")
+  define_comparator_special("<=")
+  define_comparator_special("=", "==")
+  define_comparator_special("not=", "~=", "or")
+  local function define_unary_special(op, _3frealop)
+    local function opfn(ast, scope, parent)
+      compiler.assert((#ast == 2), "expected one argument", ast)
+      local tail = compiler.compile1(ast[2], scope, parent, {nval = 1})
+      return ((_3frealop or op) .. tostring(tail[1]))
+    end
+    SPECIALS[op] = opfn
+    return nil
+  end
+  define_unary_special("not", "not ")
+  doc_special("not", {"x"}, "Logical operator; works the same as Lua.")
+  define_unary_special("bnot", "~")
+  doc_special("bnot", {"x"}, "Bitwise negation; only works in Lua 5.3+ or LuaJIT with the --use-bit-lib flag.")
+  define_unary_special("length", "#")
+  doc_special("length", {"x"}, "Returns the length of a table or string.")
+  do end (SPECIALS)["~="] = SPECIALS["not="]
+  SPECIALS["#"] = SPECIALS.length
+  SPECIALS.quote = function(ast, scope, parent)
+    compiler.assert((#ast == 2), "expected one argument", ast)
+    local runtime, this_scope = true, scope
+    while this_scope do
+      this_scope = this_scope.parent
+      if (this_scope == compiler.scopes.compiler) then
+        runtime = false
+      else
+      end
+    end
+    return compiler["do-quote"](ast[2], scope, parent, runtime)
+  end
+  doc_special("quote", {"x"}, "Quasiquote the following form. Only works in macro/compiler scope.")
+  local macro_loaded = {}
+  local function safe_getmetatable(tbl)
+    local mt = getmetatable(tbl)
+    assert((mt ~= getmetatable("")), "Illegal metatable access!")
+    return mt
+  end
+  local safe_require = nil
+  local function safe_compiler_env()
+    local _554_
+    do
+      local _553_ = rawget(_G, "utf8")
+      if (nil ~= _553_) then
+        _554_ = utils.copy(_553_)
+      else
+        _554_ = _553_
+      end
+    end
+    return {table = utils.copy(table), math = utils.copy(math), string = utils.copy(string), pairs = utils.stablepairs, ipairs = ipairs, select = select, tostring = tostring, tonumber = tonumber, bit = rawget(_G, "bit"), pcall = pcall, xpcall = xpcall, next = next, print = print, type = type, assert = assert, error = error, setmetatable = setmetatable, getmetatable = safe_getmetatable, require = safe_require, rawlen = rawget(_G, "rawlen"), rawget = rawget, rawset = rawset, rawequal = rawequal, _VERSION = _VERSION, utf8 = _554_}
+  end
+  local function combined_mt_pairs(env)
+    local combined = {}
+    local _let_556_ = getmetatable(env)
+    local __index = _let_556_["__index"]
+    if ("table" == type(__index)) then
+      for k, v in pairs(__index) do
+        combined[k] = v
+      end
+    else
+    end
+    for k, v in next, env, nil do
+      combined[k] = v
+    end
+    return next, combined, nil
+  end
+  local function make_compiler_env(ast, scope, parent, _3fopts)
+    local provided
+    do
+      local _558_ = (_3fopts or utils.root.options)
+      if ((_G.type(_558_) == "table") and ((_558_)["compiler-env"] == "strict")) then
+        provided = safe_compiler_env()
+      elseif ((_G.type(_558_) == "table") and (nil ~= (_558_).compilerEnv)) then
+        local compilerEnv = (_558_).compilerEnv
+        provided = compilerEnv
+      elseif ((_G.type(_558_) == "table") and (nil ~= (_558_)["compiler-env"])) then
+        local compiler_env = (_558_)["compiler-env"]
+        provided = compiler_env
+      elseif true then
+        local _ = _558_
+        provided = safe_compiler_env(false)
+      else
+        provided = nil
+      end
+    end
+    local env
+    local function _560_(base)
+      return utils.sym(compiler.gensym((compiler.scopes.macro or scope), base))
+    end
+    local function _561_()
+      return compiler.scopes.macro
+    end
+    local function _562_(symbol)
+      compiler.assert(compiler.scopes.macro, "must call from macro", ast)
+      return compiler.scopes.macro.manglings[tostring(symbol)]
+    end
+    local function _563_(form)
+      compiler.assert(compiler.scopes.macro, "must call from macro", ast)
+      return compiler.macroexpand(form, compiler.scopes.macro)
+    end
+    env = {_AST = ast, _CHUNK = parent, _IS_COMPILER = true, _SCOPE = scope, _SPECIALS = compiler.scopes.global.specials, _VARARG = utils.varg(), ["macro-loaded"] = macro_loaded, unpack = unpack, ["assert-compile"] = compiler.assert, view = view, version = utils.version, metadata = compiler.metadata, ["ast-source"] = utils["ast-source"], list = utils.list, ["list?"] = utils["list?"], ["table?"] = utils["table?"], sequence = utils.sequence, ["sequence?"] = utils["sequence?"], sym = utils.sym, ["sym?"] = utils["sym?"], ["multi-sym?"] = utils["multi-sym?"], comment = utils.comment, ["comment?"] = utils["comment?"], ["varg?"] = utils["varg?"], gensym = _560_, ["get-scope"] = _561_, ["in-scope?"] = _562_, macroexpand = _563_}
+    env._G = env
+    return setmetatable(env, {__index = provided, __newindex = provided, __pairs = combined_mt_pairs})
+  end
+  local function _565_(...)
+    local tbl_16_auto = {}
+    local i_17_auto = #tbl_16_auto
+    for c in string.gmatch((package.config or ""), "([^\n]+)") do
+      local val_18_auto = c
+      if (nil ~= val_18_auto) then
+        i_17_auto = (i_17_auto + 1)
+        do end (tbl_16_auto)[i_17_auto] = val_18_auto
+      else
+      end
+    end
+    return tbl_16_auto
+  end
+  local _local_564_ = _565_(...)
+  local dirsep = _local_564_[1]
+  local pathsep = _local_564_[2]
+  local pathmark = _local_564_[3]
+  local pkg_config = {dirsep = (dirsep or "/"), pathmark = (pathmark or ";"), pathsep = (pathsep or "?")}
+  local function escapepat(str)
+    return string.gsub(str, "[^%w]", "%%%1")
+  end
+  local function search_module(modulename, _3fpathstring)
+    local pathsepesc = escapepat(pkg_config.pathsep)
+    local pattern = ("([^%s]*)%s"):format(pathsepesc, pathsepesc)
+    local no_dot_module = modulename:gsub("%.", pkg_config.dirsep)
+    local fullpath = ((_3fpathstring or utils["fennel-module"].path) .. pkg_config.pathsep)
+    local function try_path(path)
+      local filename = path:gsub(escapepat(pkg_config.pathmark), no_dot_module)
+      local filename2 = path:gsub(escapepat(pkg_config.pathmark), modulename)
+      local _567_ = (io.open(filename) or io.open(filename2))
+      if (nil ~= _567_) then
+        local file = _567_
+        file:close()
+        return filename
+      elseif true then
+        local _ = _567_
+        return nil, ("no file '" .. filename .. "'")
+      else
+        return nil
+      end
+    end
+    local function find_in_path(start, _3ftried_paths)
+      local _569_ = fullpath:match(pattern, start)
+      if (nil ~= _569_) then
+        local path = _569_
+        local _570_, _571_ = try_path(path)
+        if (nil ~= _570_) then
+          local filename = _570_
+          return filename
+        elseif ((_570_ == nil) and (nil ~= _571_)) then
+          local error = _571_
+          local function _573_()
+            local _572_ = (_3ftried_paths or {})
+            table.insert(_572_, error)
+            return _572_
+          end
+          return find_in_path((start + #path + 1), _573_())
+        else
+          return nil
+        end
+      elseif true then
+        local _ = _569_
+        local function _575_()
+          local tried_paths = table.concat((_3ftried_paths or {}), "\n\9")
+          if (_VERSION < "Lua 5.4") then
+            return ("\n\9" .. tried_paths)
+          else
+            return tried_paths
+          end
+        end
+        return nil, _575_()
+      else
+        return nil
+      end
+    end
+    return find_in_path(1)
+  end
+  local function make_searcher(_3foptions)
+    local function _578_(module_name)
+      local opts = utils.copy(utils.root.options)
+      for k, v in pairs((_3foptions or {})) do
+        opts[k] = v
+      end
+      opts["module-name"] = module_name
+      local _579_, _580_ = search_module(module_name)
+      if (nil ~= _579_) then
+        local filename = _579_
+        local _583_
+        do
+          local _581_ = filename
+          local _582_ = opts
+          local function _584_(...)
+            return utils["fennel-module"].dofile(_581_, _582_, ...)
+          end
+          _583_ = _584_
+        end
+        return _583_, filename
+      elseif ((_579_ == nil) and (nil ~= _580_)) then
+        local error = _580_
+        return error
+      else
+        return nil
+      end
+    end
+    return _578_
+  end
+  local function dofile_with_searcher(fennel_macro_searcher, filename, opts, ...)
+    local searchers = (package.loaders or package.searchers or {})
+    local _ = table.insert(searchers, 1, fennel_macro_searcher)
+    local m = utils["fennel-module"].dofile(filename, opts, ...)
+    table.remove(searchers, 1)
+    return m
+  end
+  local function fennel_macro_searcher(module_name)
+    local opts
+    do
+      local _586_ = utils.copy(utils.root.options)
+      do end (_586_)["module-name"] = module_name
+      _586_["env"] = "_COMPILER"
+      _586_["requireAsInclude"] = false
+      _586_["allowedGlobals"] = nil
+      opts = _586_
+    end
+    local _587_ = search_module(module_name, utils["fennel-module"]["macro-path"])
+    if (nil ~= _587_) then
+      local filename = _587_
+      local _588_
+      if (opts["compiler-env"] == _G) then
+        local _589_ = fennel_macro_searcher
+        local _590_ = filename
+        local _591_ = opts
+        local function _593_(...)
+          return dofile_with_searcher(_589_, _590_, _591_, ...)
+        end
+        _588_ = _593_
+      else
+        local _594_ = filename
+        local _595_ = opts
+        local function _597_(...)
+          return utils["fennel-module"].dofile(_594_, _595_, ...)
+        end
+        _588_ = _597_
+      end
+      return _588_, filename
+    else
+      return nil
+    end
+  end
+  local function lua_macro_searcher(module_name)
+    local _600_ = search_module(module_name, package.path)
+    if (nil ~= _600_) then
+      local filename = _600_
+      local code
+      do
+        local f = io.open(filename)
+        local function close_handlers_8_auto(ok_9_auto, ...)
+          f:close()
+          if ok_9_auto then
+            return ...
+          else
+            return error(..., 0)
+          end
+        end
+        local function _602_()
+          return assert(f:read("*a"))
+        end
+        code = close_handlers_8_auto(_G.xpcall(_602_, (package.loaded.fennel or debug).traceback))
+      end
+      local chunk = load_code(code, make_compiler_env(), filename)
+      return chunk, filename
+    else
+      return nil
+    end
+  end
+  local macro_searchers = {fennel_macro_searcher, lua_macro_searcher}
+  local function search_macro_module(modname, n)
+    local _604_ = macro_searchers[n]
+    if (nil ~= _604_) then
+      local f = _604_
+      local _605_, _606_ = f(modname)
+      if ((nil ~= _605_) and true) then
+        local loader = _605_
+        local _3ffilename = _606_
+        return loader, _3ffilename
+      elseif true then
+        local _ = _605_
+        return search_macro_module(modname, (n + 1))
+      else
+        return nil
+      end
+    else
+      return nil
+    end
+  end
+  local function sandbox_fennel_module(modname)
+    if ((modname == "fennel.macros") or (package and package.loaded and ("table" == type(package.loaded[modname])) and (package.loaded[modname].metadata == compiler.metadata))) then
+      return {metadata = compiler.metadata, view = view}
+    else
+      return nil
+    end
+  end
+  local function _610_(modname)
+    local function _611_()
+      local loader, filename = search_macro_module(modname, 1)
+      compiler.assert(loader, (modname .. " module not found."))
+      do end (macro_loaded)[modname] = loader(modname, filename)
+      return macro_loaded[modname]
+    end
+    return (macro_loaded[modname] or sandbox_fennel_module(modname) or _611_())
+  end
+  safe_require = _610_
+  local function add_macros(macros_2a, ast, scope)
+    compiler.assert(utils["table?"](macros_2a), "expected macros to be table", ast)
+    for k, v in pairs(macros_2a) do
+      compiler.assert((type(v) == "function"), "expected each macro to be function", ast)
+      compiler["check-binding-valid"](utils.sym(k), scope, ast, {["macro?"] = true})
+      do end (scope.macros)[k] = v
+    end
+    return nil
+  end
+  local function resolve_module_name(_612_, _scope, _parent, opts)
+    local _arg_613_ = _612_
+    local filename = _arg_613_["filename"]
+    local second = _arg_613_[2]
+    local filename0 = (filename or (utils["table?"](second) and second.filename))
+    local module_name = utils.root.options["module-name"]
+    local modexpr = compiler.compile(second, opts)
+    local modname_chunk = load_code(modexpr)
+    return modname_chunk(module_name, filename0)
+  end
+  SPECIALS["require-macros"] = function(ast, scope, parent, _3freal_ast)
+    compiler.assert((#ast == 2), "Expected one module name argument", (_3freal_ast or ast))
+    local modname = resolve_module_name(ast, scope, parent, {})
+    compiler.assert(utils["string?"](modname), "module name must compile to string", (_3freal_ast or ast))
+    if not macro_loaded[modname] then
+      local loader, filename = search_macro_module(modname, 1)
+      compiler.assert(loader, (modname .. " module not found."), ast)
+      do end (macro_loaded)[modname] = compiler.assert(utils["table?"](loader(modname, filename)), "expected macros to be table", (_3freal_ast or ast))
+    else
+    end
+    if ("import-macros" == tostring(ast[1])) then
+      return macro_loaded[modname]
+    else
+      return add_macros(macro_loaded[modname], ast, scope, parent)
+    end
+  end
+  doc_special("require-macros", {"macro-module-name"}, "Load given module and use its contents as macro definitions in current scope.\nMacro module should return a table of macro functions with string keys.\nConsider using import-macros instead as it is more flexible.")
+  local function emit_included_fennel(src, path, opts, sub_chunk)
+    local subscope = compiler["make-scope"](utils.root.scope.parent)
+    local forms = {}
+    if utils.root.options.requireAsInclude then
+      subscope.specials.require = compiler["require-include"]
+    else
+    end
+    for _, val in parser.parser(parser["string-stream"](src), path) do
+      table.insert(forms, val)
+    end
+    for i = 1, #forms do
+      local subopts
+      if (i == #forms) then
+        subopts = {tail = true}
+      else
+        subopts = {nval = 0}
+      end
+      utils["propagate-options"](opts, subopts)
+      compiler.compile1(forms[i], subscope, sub_chunk, subopts)
+    end
+    return nil
+  end
+  local function include_path(ast, opts, path, mod, fennel_3f)
+    utils.root.scope.includes[mod] = "fnl/loading"
+    local src
+    do
+      local f = assert(io.open(path))
+      local function close_handlers_8_auto(ok_9_auto, ...)
+        f:close()
+        if ok_9_auto then
+          return ...
+        else
+          return error(..., 0)
+        end
+      end
+      local function _619_()
+        return assert(f:read("*all")):gsub("[\13\n]*$", "")
+      end
+      src = close_handlers_8_auto(_G.xpcall(_619_, (package.loaded.fennel or debug).traceback))
+    end
+    local ret = utils.expr(("require(\"" .. mod .. "\")"), "statement")
+    local target = ("package.preload[%q]"):format(mod)
+    local preload_str = (target .. " = " .. target .. " or function(...)")
+    local temp_chunk, sub_chunk = {}, {}
+    compiler.emit(temp_chunk, preload_str, ast)
+    compiler.emit(temp_chunk, sub_chunk)
+    compiler.emit(temp_chunk, "end", ast)
+    for _, v in ipairs(temp_chunk) do
+      table.insert(utils.root.chunk, v)
+    end
+    if fennel_3f then
+      emit_included_fennel(src, path, opts, sub_chunk)
+    else
+      compiler.emit(sub_chunk, src, ast)
+    end
+    utils.root.scope.includes[mod] = ret
+    return ret
+  end
+  local function include_circular_fallback(mod, modexpr, fallback, ast)
+    if (utils.root.scope.includes[mod] == "fnl/loading") then
+      compiler.assert(fallback, "circular include detected", ast)
+      return fallback(modexpr)
+    else
+      return nil
+    end
+  end
+  SPECIALS.include = function(ast, scope, parent, opts)
+    compiler.assert((#ast == 2), "expected one argument", ast)
+    local modexpr
+    do
+      local _622_, _623_ = pcall(resolve_module_name, ast, scope, parent, opts)
+      if ((_622_ == true) and (nil ~= _623_)) then
+        local modname = _623_
+        modexpr = utils.expr(string.format("%q", modname), "literal")
+      elseif true then
+        local _ = _622_
+        modexpr = (compiler.compile1(ast[2], scope, parent, {nval = 1}))[1]
+      else
+        modexpr = nil
+      end
+    end
+    if ((modexpr.type ~= "literal") or ((modexpr[1]):byte() ~= 34)) then
+      if opts.fallback then
+        return opts.fallback(modexpr)
+      else
+        return compiler.assert(false, "module name must be string literal", ast)
+      end
+    else
+      local mod = load_code(("return " .. modexpr[1]))()
+      local oldmod = utils.root.options["module-name"]
+      local _
+      utils.root.options["module-name"] = mod
+      _ = nil
+      local res
+      local function _627_()
+        local _626_ = search_module(mod)
+        if (nil ~= _626_) then
+          local fennel_path = _626_
+          return include_path(ast, opts, fennel_path, mod, true)
+        elseif true then
+          local _0 = _626_
+          local lua_path = search_module(mod, package.path)
+          if lua_path then
+            return include_path(ast, opts, lua_path, mod, false)
+          elseif opts.fallback then
+            return opts.fallback(modexpr)
+          else
+            return compiler.assert(false, ("module not found " .. mod), ast)
+          end
+        else
+          return nil
+        end
+      end
+      res = ((utils["member?"](mod, (utils.root.options.skipInclude or {})) and opts.fallback(modexpr, true)) or include_circular_fallback(mod, modexpr, opts.fallback, ast) or utils.root.scope.includes[mod] or _627_())
+      utils.root.options["module-name"] = oldmod
+      return res
+    end
+  end
+  doc_special("include", {"module-name-literal"}, "Like require but load the target module during compilation and embed it in the\nLua output. The module must be a string literal and resolvable at compile time.")
+  local function eval_compiler_2a(ast, scope, parent)
+    local env = make_compiler_env(ast, scope, parent)
+    local opts = utils.copy(utils.root.options)
+    opts.scope = compiler["make-scope"](compiler.scopes.compiler)
+    opts.allowedGlobals = current_global_names(env)
+    return assert(load_code(compiler.compile(ast, opts), wrap_env(env)), opts["module-name"], ast.filename)()
+  end
+  SPECIALS.macros = function(ast, scope, parent)
+    compiler.assert(((#ast == 2) and utils["table?"](ast[2])), "Expected one table argument", ast)
+    return add_macros(eval_compiler_2a(ast[2], scope, parent), ast, scope, parent)
+  end
+  doc_special("macros", {"{:macro-name-1 (fn [...] ...) ... :macro-name-N macro-body-N}"}, "Define all functions in the given table as macros local to the current scope.")
+  SPECIALS["eval-compiler"] = function(ast, scope, parent)
+    local old_first = ast[1]
+    ast[1] = utils.sym("do")
+    local val = eval_compiler_2a(ast, scope, parent)
+    do end (ast)[1] = old_first
+    return val
+  end
+  doc_special("eval-compiler", {"..."}, "Evaluate the body at compile-time. Use the macro system instead if possible.", true)
+  return {doc = doc_2a, ["current-global-names"] = current_global_names, ["load-code"] = load_code, ["macro-loaded"] = macro_loaded, ["macro-searchers"] = macro_searchers, ["make-compiler-env"] = make_compiler_env, ["search-module"] = search_module, ["make-searcher"] = make_searcher, ["wrap-env"] = wrap_env}
+end
+package.preload["fennel.compiler"] = package.preload["fennel.compiler"] or function(...)
+  local utils = require("fennel.utils")
+  local parser = require("fennel.parser")
+  local friend = require("fennel.friend")
+  local unpack = (table.unpack or _G.unpack)
+  local scopes = {}
+  local function make_scope(_3fparent)
+    local parent = (_3fparent or scopes.global)
+    local _268_
+    if parent then
+      _268_ = ((parent.depth or 0) + 1)
+    else
+      _268_ = 0
+    end
+    return {includes = setmetatable({}, {__index = (parent and parent.includes)}), macros = setmetatable({}, {__index = (parent and parent.macros)}), manglings = setmetatable({}, {__index = (parent and parent.manglings)}), specials = setmetatable({}, {__index = (parent and parent.specials)}), symmeta = setmetatable({}, {__index = (parent and parent.symmeta)}), unmanglings = setmetatable({}, {__index = (parent and parent.unmanglings)}), gensyms = setmetatable({}, {__index = (parent and parent.gensyms)}), autogensyms = setmetatable({}, {__index = (parent and parent.autogensyms)}), vararg = (parent and parent.vararg), depth = _268_, hashfn = (parent and parent.hashfn), refedglobals = {}, parent = parent}
+  end
+  local function assert_msg(ast, msg)
+    local ast_tbl
+    if ("table" == type(ast)) then
+      ast_tbl = ast
+    else
+      ast_tbl = {}
+    end
+    local m = getmetatable(ast)
+    local filename = ((m and m.filename) or ast_tbl.filename or "unknown")
+    local line = ((m and m.line) or ast_tbl.line or "?")
+    local col = ((m and m.col) or ast_tbl.col or "?")
+    local target = tostring((utils["sym?"](ast_tbl[1]) or ast_tbl[1] or "()"))
+    return string.format("%s:%s:%s Compile error in '%s': %s", filename, line, col, target, msg)
+  end
+  local function assert_compile(condition, msg, ast, _3ffallback_ast)
+    if not condition then
+      local _let_271_ = (utils.root.options or {})
+      local source = _let_271_["source"]
+      local unfriendly = _let_271_["unfriendly"]
+      local error_pinpoint = _let_271_["error-pinpoint"]
+      local ast0
+      if next(utils["ast-source"](ast)) then
+        ast0 = ast
+      else
+        ast0 = (_3ffallback_ast or {})
+      end
+      if (nil == utils.hook("assert-compile", condition, msg, ast0, utils.root.reset)) then
+        utils.root.reset()
+        if (unfriendly or not friend or not _G.io or not _G.io.read) then
+          error(assert_msg(ast0, msg), 0)
+        else
+          friend["assert-compile"](condition, msg, ast0, source, {["error-pinpoint"] = error_pinpoint})
+        end
+      else
+      end
+    else
+    end
+    return condition
+  end
+  scopes.global = make_scope()
+  scopes.global.vararg = true
+  scopes.compiler = make_scope(scopes.global)
+  scopes.macro = scopes.global
+  local serialize_subst = {["\7"] = "\\a", ["\8"] = "\\b", ["\9"] = "\\t", ["\n"] = "n", ["\11"] = "\\v", ["\12"] = "\\f"}
+  local function serialize_string(str)
+    local function _276_(_241)
+      return ("\\" .. _241:byte())
+    end
+    return string.gsub(string.gsub(string.format("%q", str), ".", serialize_subst), "[\128-\255]", _276_)
+  end
+  local function global_mangling(str)
+    if utils["valid-lua-identifier?"](str) then
+      return str
+    else
+      local function _277_(_241)
+        return string.format("_%02x", _241:byte())
+      end
+      return ("__fnl_global__" .. str:gsub("[^%w]", _277_))
+    end
+  end
+  local function global_unmangling(identifier)
+    local _279_ = string.match(identifier, "^__fnl_global__(.*)$")
+    if (nil ~= _279_) then
+      local rest = _279_
+      local _280_
+      local function _281_(_241)
+        return string.char(tonumber(_241:sub(2), 16))
+      end
+      _280_ = string.gsub(rest, "_[%da-f][%da-f]", _281_)
+      return _280_
+    elseif true then
+      local _ = _279_
+      return identifier
+    else
+      return nil
+    end
+  end
+  local allowed_globals = nil
+  local function global_allowed_3f(name)
+    return (not allowed_globals or utils["member?"](name, allowed_globals))
+  end
+  local function unique_mangling(original, mangling, scope, append)
+    if (scope.unmanglings[mangling] and not scope.gensyms[mangling]) then
+      return unique_mangling(original, (original .. append), scope, (append + 1))
+    else
+      return mangling
+    end
+  end
+  local function local_mangling(str, scope, ast, _3ftemp_manglings)
+    assert_compile(not utils["multi-sym?"](str), ("unexpected multi symbol " .. str), ast)
+    local raw
+    if ((utils["lua-keywords"])[str] or str:match("^%d")) then
+      raw = ("_" .. str)
+    else
+      raw = str
+    end
+    local mangling
+    local function _285_(_241)
+      return string.format("_%02x", _241:byte())
+    end
+    mangling = string.gsub(string.gsub(raw, "-", "_"), "[^%w_]", _285_)
+    local unique = unique_mangling(mangling, mangling, scope, 0)
+    do end (scope.unmanglings)[unique] = str
+    do
+      local manglings = (_3ftemp_manglings or scope.manglings)
+      do end (manglings)[str] = unique
+    end
+    return unique
+  end
+  local function apply_manglings(scope, new_manglings, ast)
+    for raw, mangled in pairs(new_manglings) do
+      assert_compile(not scope.refedglobals[mangled], ("use of global " .. raw .. " is aliased by a local"), ast)
+      do end (scope.manglings)[raw] = mangled
+    end
+    return nil
+  end
+  local function combine_parts(parts, scope)
+    local ret = (scope.manglings[parts[1]] or global_mangling(parts[1]))
+    for i = 2, #parts do
+      if utils["valid-lua-identifier?"](parts[i]) then
+        if (parts["multi-sym-method-call"] and (i == #parts)) then
+          ret = (ret .. ":" .. parts[i])
+        else
+          ret = (ret .. "." .. parts[i])
+        end
+      else
+        ret = (ret .. "[" .. serialize_string(parts[i]) .. "]")
+      end
+    end
+    return ret
+  end
+  local function next_append()
+    utils.root.scope["gensym-append"] = ((utils.root.scope["gensym-append"] or 0) + 1)
+    return ("_" .. utils.root.scope["gensym-append"] .. "_")
+  end
+  local function gensym(scope, _3fbase, _3fsuffix)
+    local mangling = ((_3fbase or "") .. next_append() .. (_3fsuffix or ""))
+    while scope.unmanglings[mangling] do
+      mangling = ((_3fbase or "") .. next_append() .. (_3fsuffix or ""))
+    end
+    scope.unmanglings[mangling] = (_3fbase or true)
+    do end (scope.gensyms)[mangling] = true
+    return mangling
+  end
+  local function combine_auto_gensym(parts, first)
+    parts[1] = first
+    local last = table.remove(parts)
+    local last2 = table.remove(parts)
+    local last_joiner = ((parts["multi-sym-method-call"] and ":") or ".")
+    table.insert(parts, (last2 .. last_joiner .. last))
+    return table.concat(parts, ".")
+  end
+  local function autogensym(base, scope)
+    local _288_ = utils["multi-sym?"](base)
+    if (nil ~= _288_) then
+      local parts = _288_
+      return combine_auto_gensym(parts, autogensym(parts[1], scope))
+    elseif true then
+      local _ = _288_
+      local function _289_()
+        local mangling = gensym(scope, base:sub(1, ( - 2)), "auto")
+        do end (scope.autogensyms)[base] = mangling
+        return mangling
+      end
+      return (scope.autogensyms[base] or _289_())
+    else
+      return nil
+    end
+  end
+  local function check_binding_valid(symbol, scope, ast, _3fopts)
+    local name = tostring(symbol)
+    local macro_3f
+    do
+      local t_291_ = _3fopts
+      if (nil ~= t_291_) then
+        t_291_ = (t_291_)["macro?"]
+      else
+      end
+      macro_3f = t_291_
+    end
+    assert_compile(not name:find("&"), "invalid character: &", symbol)
+    assert_compile(not name:find("^%."), "invalid character: .", symbol)
+    assert_compile(not (scope.specials[name] or (not macro_3f and scope.macros[name])), ("local %s was overshadowed by a special form or macro"):format(name), ast)
+    return assert_compile(not utils["quoted?"](symbol), string.format("macro tried to bind %s without gensym", name), symbol)
+  end
+  local function declare_local(symbol, meta, scope, ast, _3ftemp_manglings)
+    check_binding_valid(symbol, scope, ast)
+    local name = tostring(symbol)
+    assert_compile(not utils["multi-sym?"](name), ("unexpected multi symbol " .. name), ast)
+    do end (scope.symmeta)[name] = meta
+    return local_mangling(name, scope, ast, _3ftemp_manglings)
+  end
+  local function hashfn_arg_name(name, multi_sym_parts, scope)
+    if not scope.hashfn then
+      return nil
+    elseif (name == "$") then
+      return "$1"
+    elseif multi_sym_parts then
+      if (multi_sym_parts and (multi_sym_parts[1] == "$")) then
+        multi_sym_parts[1] = "$1"
+      else
+      end
+      return table.concat(multi_sym_parts, ".")
+    else
+      return nil
+    end
+  end
+  local function symbol_to_expression(symbol, scope, _3freference_3f)
+    utils.hook("symbol-to-expression", symbol, scope, _3freference_3f)
+    local name = symbol[1]
+    local multi_sym_parts = utils["multi-sym?"](name)
+    local name0 = (hashfn_arg_name(name, multi_sym_parts, scope) or name)
+    local parts = (multi_sym_parts or {name0})
+    local etype = (((1 < #parts) and "expression") or "sym")
+    local local_3f = scope.manglings[parts[1]]
+    if (local_3f and scope.symmeta[parts[1]]) then
+      scope.symmeta[parts[1]]["used"] = true
+    else
+    end
+    assert_compile(not scope.macros[parts[1]], "tried to reference a macro without calling it", symbol)
+    assert_compile((not scope.specials[parts[1]] or ("require" == parts[1])), "tried to reference a special form without calling it", symbol)
+    assert_compile((not _3freference_3f or local_3f or ("_ENV" == parts[1]) or global_allowed_3f(parts[1])), ("unknown identifier: " .. tostring(parts[1])), symbol)
+    if (allowed_globals and not local_3f and scope.parent) then
+      scope.parent.refedglobals[parts[1]] = true
+    else
+    end
+    return utils.expr(combine_parts(parts, scope), etype)
+  end
+  local function emit(chunk, out, _3fast)
+    if (type(out) == "table") then
+      return table.insert(chunk, out)
+    else
+      return table.insert(chunk, {ast = _3fast, leaf = out})
+    end
+  end
+  local function peephole(chunk)
+    if chunk.leaf then
+      return chunk
+    elseif ((3 <= #chunk) and (chunk[(#chunk - 2)].leaf == "do") and not chunk[(#chunk - 1)].leaf and (chunk[#chunk].leaf == "end")) then
+      local kid = peephole(chunk[(#chunk - 1)])
+      local new_chunk = {ast = chunk.ast}
+      for i = 1, (#chunk - 3) do
+        table.insert(new_chunk, peephole(chunk[i]))
+      end
+      for i = 1, #kid do
+        table.insert(new_chunk, kid[i])
+      end
+      return new_chunk
+    else
+      return utils.map(chunk, peephole)
+    end
+  end
+  local function flatten_chunk_correlated(main_chunk, options)
+    local function flatten(chunk, out, last_line, file)
+      local last_line0 = last_line
+      if chunk.leaf then
+        out[last_line0] = ((out[last_line0] or "") .. " " .. chunk.leaf)
+      else
+        for _, subchunk in ipairs(chunk) do
+          if (subchunk.leaf or (0 < #subchunk)) then
+            local source = utils["ast-source"](subchunk.ast)
+            if (file == source.filename) then
+              last_line0 = math.max(last_line0, (source.line or 0))
+            else
+            end
+            last_line0 = flatten(subchunk, out, last_line0, file)
+          else
+          end
+        end
+      end
+      return last_line0
+    end
+    local out = {}
+    local last = flatten(main_chunk, out, 1, options.filename)
+    for i = 1, last do
+      if (out[i] == nil) then
+        out[i] = ""
+      else
+      end
+    end
+    return table.concat(out, "\n")
+  end
+  local function flatten_chunk(file_sourcemap, chunk, tab, depth)
+    if chunk.leaf then
+      local _let_303_ = utils["ast-source"](chunk.ast)
+      local filename = _let_303_["filename"]
+      local line = _let_303_["line"]
+      table.insert(file_sourcemap, {filename, line})
+      return chunk.leaf
+    else
+      local tab0
+      do
+        local _304_ = tab
+        if (_304_ == true) then
+          tab0 = "  "
+        elseif (_304_ == false) then
+          tab0 = ""
+        elseif (_304_ == tab) then
+          tab0 = tab
+        elseif (_304_ == nil) then
+          tab0 = ""
+        else
+          tab0 = nil
+        end
+      end
+      local function parter(c)
+        if (c.leaf or (0 < #c)) then
+          local sub = flatten_chunk(file_sourcemap, c, tab0, (depth + 1))
+          if (0 < depth) then
+            return (tab0 .. sub:gsub("\n", ("\n" .. tab0)))
+          else
+            return sub
+          end
+        else
+          return nil
+        end
+      end
+      return table.concat(utils.map(chunk, parter), "\n")
+    end
+  end
+  local sourcemap = {}
+  local function make_short_src(source)
+    local source0 = source:gsub("\n", " ")
+    if (#source0 <= 49) then
+      return ("[fennel \"" .. source0 .. "\"]")
+    else
+      return ("[fennel \"" .. source0:sub(1, 46) .. "...\"]")
+    end
+  end
+  local function flatten(chunk, options)
+    local chunk0 = peephole(chunk)
+    if options.correlate then
+      return flatten_chunk_correlated(chunk0, options), {}
+    else
+      local file_sourcemap = {}
+      local src = flatten_chunk(file_sourcemap, chunk0, options.indent, 0)
+      file_sourcemap.short_src = (options.filename or make_short_src((options.source or src)))
+      if options.filename then
+        file_sourcemap.key = ("@" .. options.filename)
+      else
+        file_sourcemap.key = src
+      end
+      sourcemap[file_sourcemap.key] = file_sourcemap
+      return src, file_sourcemap
+    end
+  end
+  local function make_metadata()
+    local function _312_(self, tgt, key)
+      if self[tgt] then
+        return self[tgt][key]
+      else
+        return nil
+      end
+    end
+    local function _314_(self, tgt, key, value)
+      self[tgt] = (self[tgt] or {})
+      do end (self[tgt])[key] = value
+      return tgt
+    end
+    local function _315_(self, tgt, ...)
+      local kv_len = select("#", ...)
+      local kvs = {...}
+      if ((kv_len % 2) ~= 0) then
+        error("metadata:setall() expected even number of k/v pairs")
+      else
+      end
+      self[tgt] = (self[tgt] or {})
+      for i = 1, kv_len, 2 do
+        self[tgt][kvs[i]] = kvs[(i + 1)]
+      end
+      return tgt
+    end
+    return setmetatable({}, {__index = {get = _312_, set = _314_, setall = _315_}, __mode = "k"})
+  end
+  local function exprs1(exprs)
+    return table.concat(utils.map(exprs, tostring), ", ")
+  end
+  local function keep_side_effects(exprs, chunk, start, ast)
+    local start0 = (start or 1)
+    for j = start0, #exprs do
+      local se = exprs[j]
+      if ((se.type == "expression") and (se[1] ~= "nil")) then
+        emit(chunk, string.format("do local _ = %s end", tostring(se)), ast)
+      elseif (se.type == "statement") then
+        local code = tostring(se)
+        local disambiguated
+        if (code:byte() == 40) then
+          disambiguated = ("do end " .. code)
+        else
+          disambiguated = code
+        end
+        emit(chunk, disambiguated, ast)
+      else
+      end
+    end
+    return nil
+  end
+  local function handle_compile_opts(exprs, parent, opts, ast)
+    if opts.nval then
+      local n = opts.nval
+      local len = #exprs
+      if (n ~= len) then
+        if (n < len) then
+          keep_side_effects(exprs, parent, (n + 1), ast)
+          for i = (n + 1), len do
+            exprs[i] = nil
+          end
+        else
+          for i = (#exprs + 1), n do
+            exprs[i] = utils.expr("nil", "literal")
+          end
+        end
+      else
+      end
+    else
+    end
+    if opts.tail then
+      emit(parent, string.format("return %s", exprs1(exprs)), ast)
+    else
+    end
+    if opts.target then
+      local result = exprs1(exprs)
+      local function _323_()
+        if (result == "") then
+          return "nil"
+        else
+          return result
+        end
+      end
+      emit(parent, string.format("%s = %s", opts.target, _323_()), ast)
+    else
+    end
+    if (opts.tail or opts.target) then
+      return {returned = true}
+    else
+      local _325_ = exprs
+      _325_["returned"] = true
+      return _325_
+    end
+  end
+  local function find_macro(ast, scope)
+    local macro_2a
+    do
+      local _327_ = utils["sym?"](ast[1])
+      if (_327_ ~= nil) then
+        local _328_ = tostring(_327_)
+        if (_328_ ~= nil) then
+          macro_2a = scope.macros[_328_]
+        else
+          macro_2a = _328_
+        end
+      else
+        macro_2a = _327_
+      end
+    end
+    local multi_sym_parts = utils["multi-sym?"](ast[1])
+    if (not macro_2a and multi_sym_parts) then
+      local nested_macro = utils["get-in"](scope.macros, multi_sym_parts)
+      assert_compile((not scope.macros[multi_sym_parts[1]] or (type(nested_macro) == "function")), "macro not found in imported macro module", ast)
+      return nested_macro
+    else
+      return macro_2a
+    end
+  end
+  local function propagate_trace_info(_332_, _index, node)
+    local _arg_333_ = _332_
+    local filename = _arg_333_["filename"]
+    local line = _arg_333_["line"]
+    local bytestart = _arg_333_["bytestart"]
+    local byteend = _arg_333_["byteend"]
+    do
+      local src = utils["ast-source"](node)
+      if (("table" == type(node)) and (filename ~= src.filename)) then
+        src.filename, src.line, src["from-macro?"] = filename, line, true
+        src.bytestart, src.byteend = bytestart, byteend
+      else
+      end
+    end
+    return ("table" == type(node))
+  end
+  local function quote_literal_nils(index, node, parent)
+    if (parent and utils["list?"](parent)) then
+      for i = 1, utils.maxn(parent) do
+        local _335_ = parent[i]
+        if (_335_ == nil) then
+          parent[i] = utils.sym("nil")
+        else
+        end
+      end
+    else
+    end
+    return index, node, parent
+  end
+  local function comp(f, g)
+    local function _338_(...)
+      return f(g(...))
+    end
+    return _338_
+  end
+  local function built_in_3f(m)
+    local found_3f = false
+    for _, f in pairs(scopes.global.macros) do
+      if found_3f then break end
+      found_3f = (f == m)
+    end
+    return found_3f
+  end
+  local function macroexpand_2a(ast, scope, _3fonce)
+    local _339_
+    if utils["list?"](ast) then
+      _339_ = find_macro(ast, scope)
+    else
+      _339_ = nil
+    end
+    if (_339_ == false) then
+      return ast
+    elseif (nil ~= _339_) then
+      local macro_2a = _339_
+      local old_scope = scopes.macro
+      local _
+      scopes.macro = scope
+      _ = nil
+      local ok, transformed = nil, nil
+      local function _341_()
+        return macro_2a(unpack(ast, 2))
+      end
+      local function _342_()
+        if built_in_3f(macro_2a) then
+          return tostring
+        else
+          return debug.traceback
+        end
+      end
+      ok, transformed = xpcall(_341_, _342_())
+      local _344_
+      do
+        local _343_ = ast
+        local function _345_(...)
+          return propagate_trace_info(_343_, ...)
+        end
+        _344_ = _345_
+      end
+      utils["walk-tree"](transformed, comp(_344_, quote_literal_nils))
+      scopes.macro = old_scope
+      assert_compile(ok, transformed, ast)
+      if (_3fonce or not transformed) then
+        return transformed
+      else
+        return macroexpand_2a(transformed, scope)
+      end
+    elseif true then
+      local _ = _339_
+      return ast
+    else
+      return nil
+    end
+  end
+  local function compile_special(ast, scope, parent, opts, special)
+    local exprs = (special(ast, scope, parent, opts) or utils.expr("nil", "literal"))
+    local exprs0
+    if ("table" ~= type(exprs)) then
+      exprs0 = utils.expr(exprs, "expression")
+    else
+      exprs0 = exprs
+    end
+    local exprs2
+    if utils["expr?"](exprs0) then
+      exprs2 = {exprs0}
+    else
+      exprs2 = exprs0
+    end
+    if not exprs2.returned then
+      return handle_compile_opts(exprs2, parent, opts, ast)
+    elseif (opts.tail or opts.target) then
+      return {returned = true}
+    else
+      return exprs2
+    end
+  end
+  local function compile_function_call(ast, scope, parent, opts, compile1, len)
+    local fargs = {}
+    local fcallee = (compile1(ast[1], scope, parent, {nval = 1}))[1]
+    assert_compile((utils["sym?"](ast[1]) or utils["list?"](ast[1]) or ("string" == type(ast[1]))), ("cannot call literal value " .. tostring(ast[1])), ast)
+    for i = 2, len do
+      local subexprs
+      local _351_
+      if (i ~= len) then
+        _351_ = 1
+      else
+        _351_ = nil
+      end
+      subexprs = compile1(ast[i], scope, parent, {nval = _351_})
+      table.insert(fargs, subexprs[1])
+      if (i == len) then
+        for j = 2, #subexprs do
+          table.insert(fargs, subexprs[j])
+        end
+      else
+        keep_side_effects(subexprs, parent, 2, ast[i])
+      end
+    end
+    local pat
+    if ("string" == type(ast[1])) then
+      pat = "(%s)(%s)"
+    else
+      pat = "%s(%s)"
+    end
+    local call = string.format(pat, tostring(fcallee), exprs1(fargs))
+    return handle_compile_opts({utils.expr(call, "statement")}, parent, opts, ast)
+  end
+  local function compile_call(ast, scope, parent, opts, compile1)
+    utils.hook("call", ast, scope)
+    local len = #ast
+    local first = ast[1]
+    local multi_sym_parts = utils["multi-sym?"](first)
+    local special = (utils["sym?"](first) and scope.specials[tostring(first)])
+    assert_compile((0 < len), "expected a function, macro, or special to call", ast)
+    if special then
+      return compile_special(ast, scope, parent, opts, special)
+    elseif (multi_sym_parts and multi_sym_parts["multi-sym-method-call"]) then
+      local table_with_method = table.concat({unpack(multi_sym_parts, 1, (#multi_sym_parts - 1))}, ".")
+      local method_to_call = multi_sym_parts[#multi_sym_parts]
+      local new_ast = utils.list(utils.sym(":", ast), utils.sym(table_with_method, ast), method_to_call, select(2, unpack(ast)))
+      return compile1(new_ast, scope, parent, opts)
+    else
+      return compile_function_call(ast, scope, parent, opts, compile1, len)
+    end
+  end
+  local function compile_varg(ast, scope, parent, opts)
+    local _356_
+    if scope.hashfn then
+      _356_ = "use $... in hashfn"
+    else
+      _356_ = "unexpected vararg"
+    end
+    assert_compile(scope.vararg, _356_, ast)
+    return handle_compile_opts({utils.expr("...", "varg")}, parent, opts, ast)
+  end
+  local function compile_sym(ast, scope, parent, opts)
+    local multi_sym_parts = utils["multi-sym?"](ast)
+    assert_compile(not (multi_sym_parts and multi_sym_parts["multi-sym-method-call"]), "multisym method calls may only be in call position", ast)
+    local e
+    if (ast[1] == "nil") then
+      e = utils.expr("nil", "literal")
+    else
+      e = symbol_to_expression(ast, scope, true)
+    end
+    return handle_compile_opts({e}, parent, opts, ast)
+  end
+  local function serialize_number(n)
+    local _359_ = string.gsub(tostring(n), ",", ".")
+    return _359_
+  end
+  local function compile_scalar(ast, _scope, parent, opts)
+    local serialize
+    do
+      local _360_ = type(ast)
+      if (_360_ == "nil") then
+        serialize = tostring
+      elseif (_360_ == "boolean") then
+        serialize = tostring
+      elseif (_360_ == "string") then
+        serialize = serialize_string
+      elseif (_360_ == "number") then
+        serialize = serialize_number
+      else
+        serialize = nil
+      end
+    end
+    return handle_compile_opts({utils.expr(serialize(ast), "literal")}, parent, opts)
+  end
+  local function compile_table(ast, scope, parent, opts, compile1)
+    local function escape_key(k)
+      if ((type(k) == "string") and utils["valid-lua-identifier?"](k)) then
+        return k
+      else
+        local _let_362_ = compile1(k, scope, parent, {nval = 1})
+        local compiled = _let_362_[1]
+        return ("[" .. tostring(compiled) .. "]")
+      end
+    end
+    local keys = {}
+    local buffer
+    do
+      local tbl_16_auto = {}
+      local i_17_auto = #tbl_16_auto
+      for i, elem in ipairs(ast) do
+        local val_18_auto
+        do
+          local nval = ((nil ~= ast[(i + 1)]) and 1)
+          do end (keys)[i] = true
+          val_18_auto = exprs1(compile1(elem, scope, parent, {nval = nval}))
+        end
+        if (nil ~= val_18_auto) then
+          i_17_auto = (i_17_auto + 1)
+          do end (tbl_16_auto)[i_17_auto] = val_18_auto
+        else
+        end
+      end
+      buffer = tbl_16_auto
+    end
+    do
+      local tbl_16_auto = buffer
+      local i_17_auto = #tbl_16_auto
+      for k, v in utils.stablepairs(ast) do
+        local val_18_auto
+        if not keys[k] then
+          local _let_365_ = compile1(ast[k], scope, parent, {nval = 1})
+          local v0 = _let_365_[1]
+          val_18_auto = string.format("%s = %s", escape_key(k), tostring(v0))
+        else
+          val_18_auto = nil
+        end
+        if (nil ~= val_18_auto) then
+          i_17_auto = (i_17_auto + 1)
+          do end (tbl_16_auto)[i_17_auto] = val_18_auto
+        else
+        end
+      end
+    end
+    return handle_compile_opts({utils.expr(("{" .. table.concat(buffer, ", ") .. "}"), "expression")}, parent, opts, ast)
+  end
+  local function compile1(ast, scope, parent, _3fopts)
+    local opts = (_3fopts or {})
+    local ast0 = macroexpand_2a(ast, scope)
+    if utils["list?"](ast0) then
+      return compile_call(ast0, scope, parent, opts, compile1)
+    elseif utils["varg?"](ast0) then
+      return compile_varg(ast0, scope, parent, opts)
+    elseif utils["sym?"](ast0) then
+      return compile_sym(ast0, scope, parent, opts)
+    elseif (type(ast0) == "table") then
+      return compile_table(ast0, scope, parent, opts, compile1)
+    elseif ((type(ast0) == "nil") or (type(ast0) == "boolean") or (type(ast0) == "number") or (type(ast0) == "string")) then
+      return compile_scalar(ast0, scope, parent, opts)
+    else
+      return assert_compile(false, ("could not compile value of type " .. type(ast0)), ast0)
+    end
+  end
+  local function destructure(to, from, ast, scope, parent, opts)
+    local opts0 = (opts or {})
+    local _let_369_ = opts0
+    local isvar = _let_369_["isvar"]
+    local declaration = _let_369_["declaration"]
+    local forceglobal = _let_369_["forceglobal"]
+    local forceset = _let_369_["forceset"]
+    local symtype = _let_369_["symtype"]
+    local symtype0 = ("_" .. (symtype or "dst"))
+    local setter
+    if declaration then
+      setter = "local %s = %s"
+    else
+      setter = "%s = %s"
+    end
+    local new_manglings = {}
+    local function getname(symbol, up1)
+      local raw = symbol[1]
+      assert_compile(not (opts0.nomulti and utils["multi-sym?"](raw)), ("unexpected multi symbol " .. raw), up1)
+      if declaration then
+        return declare_local(symbol, nil, scope, symbol, new_manglings)
+      else
+        local parts = (utils["multi-sym?"](raw) or {raw})
+        local meta = scope.symmeta[parts[1]]
+        assert_compile(not raw:find(":"), "cannot set method sym", symbol)
+        if ((#parts == 1) and not forceset) then
+          assert_compile(not (forceglobal and meta), string.format("global %s conflicts with local", tostring(symbol)), symbol)
+          assert_compile(not (meta and not meta.var), ("expected var " .. raw), symbol)
+        else
+        end
+        assert_compile((meta or not opts0.noundef or global_allowed_3f(parts[1])), ("expected local " .. parts[1]), symbol)
+        if forceglobal then
+          assert_compile(not scope.symmeta[scope.unmanglings[raw]], ("global " .. raw .. " conflicts with local"), symbol)
+          do end (scope.manglings)[raw] = global_mangling(raw)
+          do end (scope.unmanglings)[global_mangling(raw)] = raw
+          if allowed_globals then
+            table.insert(allowed_globals, raw)
+          else
+          end
+        else
+        end
+        return symbol_to_expression(symbol, scope)[1]
+      end
+    end
+    local function compile_top_target(lvalues)
+      local inits
+      local function _375_(_241)
+        if scope.manglings[_241] then
+          return _241
+        else
+          return "nil"
+        end
+      end
+      inits = utils.map(lvalues, _375_)
+      local init = table.concat(inits, ", ")
+      local lvalue = table.concat(lvalues, ", ")
+      local plast = parent[#parent]
+      local plen = #parent
+      local ret = compile1(from, scope, parent, {target = lvalue})
+      if declaration then
+        for pi = plen, #parent do
+          if (parent[pi] == plast) then
+            plen = pi
+          else
+          end
+        end
+        if ((#parent == (plen + 1)) and parent[#parent].leaf) then
+          parent[#parent]["leaf"] = ("local " .. parent[#parent].leaf)
+        elseif (init == "nil") then
+          table.insert(parent, (plen + 1), {ast = ast, leaf = ("local " .. lvalue)})
+        else
+          table.insert(parent, (plen + 1), {ast = ast, leaf = ("local " .. lvalue .. " = " .. init)})
+        end
+      else
+      end
+      return ret
+    end
+    local function destructure_sym(left, rightexprs, up1, top_3f)
+      local lname = getname(left, up1)
+      check_binding_valid(left, scope, left)
+      if top_3f then
+        compile_top_target({lname})
+      else
+        emit(parent, setter:format(lname, exprs1(rightexprs)), left)
+      end
+      if declaration then
+        scope.symmeta[tostring(left)] = {var = isvar}
+        return nil
+      else
+        return nil
+      end
+    end
+    local unpack_fn = "function (t, k, e)\n                        local mt = getmetatable(t)\n                        if 'table' == type(mt) and mt.__fennelrest then\n                          return mt.__fennelrest(t, k)\n                        elseif e then\n                          local rest = {}\n                          for k, v in pairs(t) do\n                            if not e[k] then rest[k] = v end\n                          end\n                          return rest\n                        else\n                          return {(table.unpack or unpack)(t, k)}\n                        end\n                      end"
+    local function destructure_kv_rest(s, v, left, excluded_keys, destructure1)
+      local exclude_str
+      local _382_
+      do
+        local tbl_16_auto = {}
+        local i_17_auto = #tbl_16_auto
+        for _, k in ipairs(excluded_keys) do
+          local val_18_auto = string.format("[%s] = true", serialize_string(k))
+          if (nil ~= val_18_auto) then
+            i_17_auto = (i_17_auto + 1)
+            do end (tbl_16_auto)[i_17_auto] = val_18_auto
+          else
+          end
+        end
+        _382_ = tbl_16_auto
+      end
+      exclude_str = table.concat(_382_, ", ")
+      local subexpr = utils.expr(string.format(string.gsub(("(" .. unpack_fn .. ")(%s, %s, {%s})"), "\n%s*", " "), s, tostring(v), exclude_str), "expression")
+      return destructure1(v, {subexpr}, left)
+    end
+    local function destructure_rest(s, k, left, destructure1)
+      local unpack_str = ("(" .. unpack_fn .. ")(%s, %s)")
+      local formatted = string.format(string.gsub(unpack_str, "\n%s*", " "), s, k)
+      local subexpr = utils.expr(formatted, "expression")
+      assert_compile((utils["sequence?"](left) and (nil == left[(k + 2)])), "expected rest argument before last parameter", left)
+      return destructure1(left[(k + 1)], {subexpr}, left)
+    end
+    local function destructure_table(left, rightexprs, top_3f, destructure1)
+      local s = gensym(scope, symtype0)
+      local right
+      do
+        local _384_
+        if top_3f then
+          _384_ = exprs1(compile1(from, scope, parent))
+        else
+          _384_ = exprs1(rightexprs)
+        end
+        if (_384_ == "") then
+          right = "nil"
+        elseif (nil ~= _384_) then
+          local right0 = _384_
+          right = right0
+        else
+          right = nil
+        end
+      end
+      local excluded_keys = {}
+      emit(parent, string.format("local %s = %s", s, right), left)
+      for k, v in utils.stablepairs(left) do
+        if not (("number" == type(k)) and tostring(left[(k - 1)]):find("^&")) then
+          if (utils["sym?"](k) and (tostring(k) == "&")) then
+            destructure_kv_rest(s, v, left, excluded_keys, destructure1)
+          elseif (utils["sym?"](v) and (tostring(v) == "&")) then
+            destructure_rest(s, k, left, destructure1)
+          elseif (utils["sym?"](k) and (tostring(k) == "&as")) then
+            destructure_sym(v, {utils.expr(tostring(s))}, left)
+          elseif (utils["sequence?"](left) and (tostring(v) == "&as")) then
+            local _, next_sym, trailing = select(k, unpack(left))
+            assert_compile((nil == trailing), "expected &as argument before last parameter", left)
+            destructure_sym(next_sym, {utils.expr(tostring(s))}, left)
+          else
+            local key
+            if (type(k) == "string") then
+              key = serialize_string(k)
+            else
+              key = k
+            end
+            local subexpr = utils.expr(string.format("%s[%s]", s, key), "expression")
+            if (type(k) == "string") then
+              table.insert(excluded_keys, k)
+            else
+            end
+            destructure1(v, {subexpr}, left)
+          end
+        else
+        end
+      end
+      return nil
+    end
+    local function destructure_values(left, up1, top_3f, destructure1)
+      local left_names, tables = {}, {}
+      for i, name in ipairs(left) do
+        if utils["sym?"](name) then
+          table.insert(left_names, getname(name, up1))
+        else
+          local symname = gensym(scope, symtype0)
+          table.insert(left_names, symname)
+          do end (tables)[i] = {name, utils.expr(symname, "sym")}
+        end
+      end
+      assert_compile(left[1], "must provide at least one value", left)
+      assert_compile(top_3f, "can't nest multi-value destructuring", left)
+      compile_top_target(left_names)
+      if declaration then
+        for _, sym in ipairs(left) do
+          if utils["sym?"](sym) then
+            scope.symmeta[tostring(sym)] = {var = isvar}
+          else
+          end
+        end
+      else
+      end
+      for _, pair in utils.stablepairs(tables) do
+        destructure1(pair[1], {pair[2]}, left)
+      end
+      return nil
+    end
+    local function destructure1(left, rightexprs, up1, top_3f)
+      if (utils["sym?"](left) and (left[1] ~= "nil")) then
+        destructure_sym(left, rightexprs, up1, top_3f)
+      elseif utils["table?"](left) then
+        destructure_table(left, rightexprs, top_3f, destructure1)
+      elseif utils["list?"](left) then
+        destructure_values(left, up1, top_3f, destructure1)
+      else
+        assert_compile(false, string.format("unable to bind %s %s", type(left), tostring(left)), (((type((up1)[2]) == "table") and (up1)[2]) or up1))
+      end
+      if top_3f then
+        return {returned = true}
+      else
+        return nil
+      end
+    end
+    local ret = destructure1(to, nil, ast, true)
+    utils.hook("destructure", from, to, scope, opts0)
+    apply_manglings(scope, new_manglings, ast)
+    return ret
+  end
+  local function require_include(ast, scope, parent, opts)
+    opts.fallback = function(e, no_warn)
+      if (not no_warn and ("literal" == e.type)) then
+        utils.warn(("include module not found, falling back to require: %s"):format(tostring(e)))
+      else
+      end
+      return utils.expr(string.format("require(%s)", tostring(e)), "statement")
+    end
+    return scopes.global.specials.include(ast, scope, parent, opts)
+  end
+  local function compile_stream(strm, options)
+    local opts = utils.copy(options)
+    local old_globals = allowed_globals
+    local scope = (opts.scope or make_scope(scopes.global))
+    local vals = {}
+    local chunk = {}
+    do end (function(tgt, m, ...) return tgt[m](tgt, ...) end)(utils.root, "set-reset")
+    allowed_globals = opts.allowedGlobals
+    if (opts.indent == nil) then
+      opts.indent = "  "
+    else
+    end
+    if opts.requireAsInclude then
+      scope.specials.require = require_include
+    else
+    end
+    utils.root.chunk, utils.root.scope, utils.root.options = chunk, scope, opts
+    for _, val in parser.parser(strm, opts.filename, opts) do
+      table.insert(vals, val)
+    end
+    for i = 1, #vals do
+      local exprs = compile1(vals[i], scope, chunk, {nval = (((i < #vals) and 0) or nil), tail = (i == #vals)})
+      keep_side_effects(exprs, chunk, nil, vals[i])
+      if (i == #vals) then
+        utils.hook("chunk", vals[i], scope)
+      else
+      end
+    end
+    allowed_globals = old_globals
+    utils.root.reset()
+    return flatten(chunk, opts)
+  end
+  local function compile_string(str, _3fopts)
+    local opts = (_3fopts or {})
+    return compile_stream(parser["string-stream"](str, opts), opts)
+  end
+  local function compile(ast, opts)
+    local opts0 = utils.copy(opts)
+    local old_globals = allowed_globals
+    local chunk = {}
+    local scope = (opts0.scope or make_scope(scopes.global))
+    do end (function(tgt, m, ...) return tgt[m](tgt, ...) end)(utils.root, "set-reset")
+    allowed_globals = opts0.allowedGlobals
+    if (opts0.indent == nil) then
+      opts0.indent = "  "
+    else
+    end
+    if opts0.requireAsInclude then
+      scope.specials.require = require_include
+    else
+    end
+    utils.root.chunk, utils.root.scope, utils.root.options = chunk, scope, opts0
+    local exprs = compile1(ast, scope, chunk, {tail = true})
+    keep_side_effects(exprs, chunk, nil, ast)
+    utils.hook("chunk", ast, scope)
+    allowed_globals = old_globals
+    utils.root.reset()
+    return flatten(chunk, opts0)
+  end
+  local function traceback_frame(info)
+    if ((info.what == "C") and info.name) then
+      return string.format("  [C]: in function '%s'", info.name)
+    elseif (info.what == "C") then
+      return "  [C]: in ?"
+    else
+      local remap = sourcemap[info.source]
+      if (remap and remap[info.currentline]) then
+        if ((remap[info.currentline][1] or "unknown") ~= "unknown") then
+          info.short_src = sourcemap[("@" .. remap[info.currentline][1])].short_src
+        else
+          info.short_src = remap.short_src
+        end
+        info.currentline = (remap[info.currentline][2] or -1)
+      else
+      end
+      if (info.what == "Lua") then
+        local function _404_()
+          if info.name then
+            return ("'" .. info.name .. "'")
+          else
+            return "?"
+          end
+        end
+        return string.format("  %s:%d: in function %s", info.short_src, info.currentline, _404_())
+      elseif (info.short_src == "(tail call)") then
+        return "  (tail call)"
+      else
+        return string.format("  %s:%d: in main chunk", info.short_src, info.currentline)
+      end
+    end
+  end
+  local function traceback(_3fmsg, _3fstart)
+    local msg = tostring((_3fmsg or ""))
+    if ((msg:find("^%g+:%d+:%d+ Compile error:.*") or msg:find("^%g+:%d+:%d+ Parse error:.*")) and not utils["debug-on?"]("trace")) then
+      return msg
+    else
+      local lines = {}
+      if (msg:find("^%g+:%d+:%d+ Compile error:") or msg:find("^%g+:%d+:%d+ Parse error:")) then
+        table.insert(lines, msg)
+      else
+        local newmsg = msg:gsub("^[^:]*:%d+:%s+", "runtime error: ")
+        table.insert(lines, newmsg)
+      end
+      table.insert(lines, "stack traceback:")
+      local done_3f, level = false, (_3fstart or 2)
+      while not done_3f do
+        do
+          local _408_ = debug.getinfo(level, "Sln")
+          if (_408_ == nil) then
+            done_3f = true
+          elseif (nil ~= _408_) then
+            local info = _408_
+            table.insert(lines, traceback_frame(info))
+          else
+          end
+        end
+        level = (level + 1)
+      end
+      return table.concat(lines, "\n")
+    end
+  end
+  local function entry_transform(fk, fv)
+    local function _411_(k, v)
+      if (type(k) == "number") then
+        return k, fv(v)
+      else
+        return fk(k), fv(v)
+      end
+    end
+    return _411_
+  end
+  local function mixed_concat(t, joiner)
+    local seen = {}
+    local ret, s = "", ""
+    for k, v in ipairs(t) do
+      table.insert(seen, k)
+      ret = (ret .. s .. v)
+      s = joiner
+    end
+    for k, v in utils.stablepairs(t) do
+      if not seen[k] then
+        ret = (ret .. s .. "[" .. k .. "]" .. "=" .. v)
+        s = joiner
+      else
+      end
+    end
+    return ret
+  end
+  local function do_quote(form, scope, parent, runtime_3f)
+    local function q(x)
+      return do_quote(x, scope, parent, runtime_3f)
+    end
+    if utils["varg?"](form) then
+      assert_compile(not runtime_3f, "quoted ... may only be used at compile time", form)
+      return "_VARARG"
+    elseif utils["sym?"](form) then
+      local filename
+      if form.filename then
+        filename = string.format("%q", form.filename)
+      else
+        filename = "nil"
+      end
+      local symstr = tostring(form)
+      assert_compile(not runtime_3f, "symbols may only be used at compile time", form)
+      if (symstr:find("#$") or symstr:find("#[:.]")) then
+        return string.format("sym('%s', {filename=%s, line=%s})", autogensym(symstr, scope), filename, (form.line or "nil"))
+      else
+        return string.format("sym('%s', {quoted=true, filename=%s, line=%s})", symstr, filename, (form.line or "nil"))
+      end
+    elseif (utils["list?"](form) and utils["sym?"](form[1]) and (tostring(form[1]) == "unquote")) then
+      local payload = form[2]
+      local res = unpack(compile1(payload, scope, parent))
+      return res[1]
+    elseif utils["list?"](form) then
+      local mapped
+      local function _416_()
+        return nil
+      end
+      mapped = utils.kvmap(form, entry_transform(_416_, q))
+      local filename
+      if form.filename then
+        filename = string.format("%q", form.filename)
+      else
+        filename = "nil"
+      end
+      assert_compile(not runtime_3f, "lists may only be used at compile time", form)
+      return string.format(("setmetatable({filename=%s, line=%s, bytestart=%s, %s}" .. ", getmetatable(list()))"), filename, (form.line or "nil"), (form.bytestart or "nil"), mixed_concat(mapped, ", "))
+    elseif utils["sequence?"](form) then
+      local mapped = utils.kvmap(form, entry_transform(q, q))
+      local source = getmetatable(form)
+      local filename
+      if source.filename then
+        filename = string.format("%q", source.filename)
+      else
+        filename = "nil"
+      end
+      local _419_
+      if source then
+        _419_ = source.line
+      else
+        _419_ = "nil"
+      end
+      return string.format("setmetatable({%s}, {filename=%s, line=%s, sequence=%s})", mixed_concat(mapped, ", "), filename, _419_, "(getmetatable(sequence()))['sequence']")
+    elseif (type(form) == "table") then
+      local mapped = utils.kvmap(form, entry_transform(q, q))
+      local source = getmetatable(form)
+      local filename
+      if source.filename then
+        filename = string.format("%q", source.filename)
+      else
+        filename = "nil"
+      end
+      local function _422_()
+        if source then
+          return source.line
+        else
+          return "nil"
+        end
+      end
+      return string.format("setmetatable({%s}, {filename=%s, line=%s})", mixed_concat(mapped, ", "), filename, _422_())
+    elseif (type(form) == "string") then
+      return serialize_string(form)
+    else
+      return tostring(form)
+    end
+  end
+  return {compile = compile, compile1 = compile1, ["compile-stream"] = compile_stream, ["compile-string"] = compile_string, ["check-binding-valid"] = check_binding_valid, emit = emit, destructure = destructure, ["require-include"] = require_include, autogensym = autogensym, gensym = gensym, ["do-quote"] = do_quote, ["global-mangling"] = global_mangling, ["global-unmangling"] = global_unmangling, ["apply-manglings"] = apply_manglings, macroexpand = macroexpand_2a, ["declare-local"] = declare_local, ["make-scope"] = make_scope, ["keep-side-effects"] = keep_side_effects, ["symbol-to-expression"] = symbol_to_expression, assert = assert_compile, scopes = scopes, traceback = traceback, metadata = make_metadata(), sourcemap = sourcemap}
+end
+package.preload["fennel.friend"] = package.preload["fennel.friend"] or function(...)
+  local utils = require("fennel.utils")
+  local utf8_ok_3f, utf8 = pcall(require, "utf8")
+  local suggestions = {["unexpected multi symbol (.*)"] = {"removing periods or colons from %s"}, ["use of global (.*) is aliased by a local"] = {"renaming local %s", "refer to the global using _G.%s instead of directly"}, ["local (.*) was overshadowed by a special form or macro"] = {"renaming local %s"}, ["global (.*) conflicts with local"] = {"renaming local %s"}, ["expected var (.*)"] = {"declaring %s using var instead of let/local", "introducing a new local instead of changing the value of %s"}, ["expected macros to be table"] = {"ensuring your macro definitions return a table"}, ["expected each macro to be function"] = {"ensuring that the value for each key in your macros table contains a function", "avoid defining nested macro tables"}, ["macro not found in macro module"] = {"checking the keys of the imported macro module's returned table"}, ["macro tried to bind (.*) without gensym"] = {"changing to %s# when introducing identifiers inside macros"}, ["unknown identifier: (.*)"] = {"looking to see if there's a typo", "using the _G table instead, eg. _G.%s if you really want a global", "moving this code to somewhere that %s is in scope", "binding %s as a local in the scope of this code"}, ["expected a function.* to call"] = {"removing the empty parentheses", "using square brackets if you want an empty table"}, ["cannot call literal value"] = {"checking for typos", "checking for a missing function name", "making sure to use prefix operators, not infix"}, ["unexpected vararg"] = {"putting \"...\" at the end of the fn parameters if the vararg was intended"}, ["multisym method calls may only be in call position"] = {"using a period instead of a colon to reference a table's fields", "putting parens around this"}, ["unused local (.*)"] = {"renaming the local to _%s if it is meant to be unused", "fixing a typo so %s is used", "disabling the linter which checks for unused locals"}, ["expected parameters"] = {"adding function parameters as a list of identifiers in brackets"}, ["unable to bind (.*)"] = {"replacing the %s with an identifier"}, ["expected rest argument before last parameter"] = {"moving & to right before the final identifier when destructuring"}, ["expected vararg as last parameter"] = {"moving the \"...\" to the end of the parameter list"}, ["expected symbol for function parameter: (.*)"] = {"changing %s to an identifier instead of a literal value"}, ["could not compile value of type "] = {"debugging the macro you're calling to return a list or table"}, ["expected local"] = {"looking for a typo", "looking for a local which is used out of its scope"}, ["expected body expression"] = {"putting some code in the body of this form after the bindings"}, ["expected binding and iterator"] = {"making sure you haven't omitted a local name or iterator"}, ["expected binding sequence"] = {"placing a table here in square brackets containing identifiers to bind"}, ["expected even number of name/value bindings"] = {"finding where the identifier or value is missing"}, ["may only be used at compile time"] = {"moving this to inside a macro if you need to manipulate symbols/lists", "using square brackets instead of parens to construct a table"}, ["unexpected closing delimiter (.)"] = {"deleting %s", "adding matching opening delimiter earlier"}, ["mismatched closing delimiter (.), expected (.)"] = {"replacing %s with %s", "deleting %s", "adding matching opening delimiter earlier"}, ["expected even number of values in table literal"] = {"removing a key", "adding a value"}, ["expected whitespace before opening delimiter"] = {"adding whitespace"}, ["invalid character: (.)"] = {"deleting or replacing %s", "avoiding reserved characters like \", \\, ', ~, ;, @, `, and comma"}, ["could not read number (.*)"] = {"removing the non-digit character", "beginning the identifier with a non-digit if it is not meant to be a number"}, ["can't start multisym segment with a digit"] = {"removing the digit", "adding a non-digit before the digit"}, ["malformed multisym"] = {"ensuring each period or colon is not followed by another period or colon"}, ["method must be last component"] = {"using a period instead of a colon for field access", "removing segments after the colon", "making the method call, then looking up the field on the result"}, ["$ and $... in hashfn are mutually exclusive"] = {"modifying the hashfn so it only contains $... or $, $1, $2, $3, etc"}, ["tried to reference a macro without calling it"] = {"renaming the macro so as not to conflict with locals"}, ["tried to reference a special form without calling it"] = {"making sure to use prefix operators, not infix", "wrapping the special in a function if you need it to be first class"}, ["missing subject"] = {"adding an item to operate on"}, ["expected even number of pattern/body pairs"] = {"checking that every pattern has a body to go with it", "adding _ before the final body"}, ["expected at least one pattern/body pair"] = {"adding a pattern and a body to execute when the pattern matches"}, ["unexpected arguments"] = {"removing an argument", "checking for typos"}, ["unexpected iterator clause"] = {"removing an argument", "checking for typos"}}
+  local unpack = (table.unpack or _G.unpack)
+  local function suggest(msg)
+    local s = nil
+    for pat, sug in pairs(suggestions) do
+      if s then break end
+      local matches = {msg:match(pat)}
+      if (0 < #matches) then
+        local tbl_16_auto = {}
+        local i_17_auto = #tbl_16_auto
+        for _, s0 in ipairs(sug) do
+          local val_18_auto = s0:format(unpack(matches))
+          if (nil ~= val_18_auto) then
+            i_17_auto = (i_17_auto + 1)
+            do end (tbl_16_auto)[i_17_auto] = val_18_auto
+          else
+          end
+        end
+        s = tbl_16_auto
+      else
+        s = nil
+      end
+    end
+    return s
+  end
+  local function read_line(filename, line, _3fsource)
+    if _3fsource then
+      local matcher = string.gmatch((_3fsource .. "\n"), "(.-)(\13?\n)")
+      for _ = 2, line do
+        matcher()
+      end
+      return matcher()
+    else
+      local f = assert(io.open(filename))
+      local function close_handlers_8_auto(ok_9_auto, ...)
+        f:close()
+        if ok_9_auto then
+          return ...
+        else
+          return error(..., 0)
+        end
+      end
+      local function _185_()
+        for _ = 2, line do
+          f:read()
+        end
+        return f:read()
+      end
+      return close_handlers_8_auto(_G.xpcall(_185_, (package.loaded.fennel or debug).traceback))
+    end
+  end
+  local function sub(str, start, _end)
+    if ((_end < start) or (#str < start) or (#str < _end)) then
+      return ""
+    elseif utf8_ok_3f then
+      return string.sub(str, utf8.offset(str, start), ((utf8.offset(str, (_end + 1)) or (utf8.len(str) + 1)) - 1))
+    else
+      return string.sub(str, start, math.min(_end, str:len()))
+    end
+  end
+  local function highlight_line(codeline, col, _3fendcol, opts)
+    if ((opts and (false == opts["error-pinpoint"])) or (os and os.getenv and os.getenv("NO_COLOR"))) then
+      return codeline
+    else
+      local _let_188_ = (opts or {})
+      local error_pinpoint = _let_188_["error-pinpoint"]
+      local endcol = (_3fendcol or col)
+      local eol
+      if utf8_ok_3f then
+        eol = utf8.len(codeline)
+      else
+        eol = string.len(codeline)
+      end
+      local _let_190_ = (error_pinpoint or {"\27[7m", "\27[0m"})
+      local open = _let_190_[1]
+      local close = _let_190_[2]
+      return (sub(codeline, 1, col) .. open .. sub(codeline, (col + 1), (endcol + 1)) .. close .. sub(codeline, (endcol + 2), eol))
+    end
+  end
+  local function friendly_msg(msg, _192_, source, opts)
+    local _arg_193_ = _192_
+    local filename = _arg_193_["filename"]
+    local line = _arg_193_["line"]
+    local col = _arg_193_["col"]
+    local endcol = _arg_193_["endcol"]
+    local ok, codeline = pcall(read_line, filename, line, source)
+    local out = {msg, ""}
+    if (ok and codeline) then
+      if col then
+        table.insert(out, highlight_line(codeline, col, endcol, opts))
+      else
+        table.insert(out, codeline)
+      end
+    else
+    end
+    for _, suggestion in ipairs((suggest(msg) or {})) do
+      table.insert(out, ("* Try %s."):format(suggestion))
+    end
+    return table.concat(out, "\n")
+  end
+  local function assert_compile(condition, msg, ast, source, opts)
+    if not condition then
+      local _let_196_ = utils["ast-source"](ast)
+      local filename = _let_196_["filename"]
+      local line = _let_196_["line"]
+      local col = _let_196_["col"]
+      error(friendly_msg(("%s:%s:%s Compile error: %s"):format((filename or "unknown"), (line or "?"), (col or "?"), msg), utils["ast-source"](ast), source, opts), 0)
+    else
+    end
+    return condition
+  end
+  local function parse_error(msg, filename, line, col, source, opts)
+    return error(friendly_msg(("%s:%s:%s Parse error: %s"):format(filename, line, col, msg), {filename = filename, line = line, col = col}, source, opts), 0)
+  end
+  return {["assert-compile"] = assert_compile, ["parse-error"] = parse_error}
+end
+package.preload["fennel.parser"] = package.preload["fennel.parser"] or function(...)
+  local utils = require("fennel.utils")
+  local friend = require("fennel.friend")
+  local unpack = (table.unpack or _G.unpack)
+  local function granulate(getchunk)
+    local c, index, done_3f = "", 1, false
+    local function _198_(parser_state)
+      if not done_3f then
+        if (index <= #c) then
+          local b = c:byte(index)
+          index = (index + 1)
+          return b
+        else
+          local _199_ = getchunk(parser_state)
+          local function _200_()
+            local char = _199_
+            return (char ~= "")
+          end
+          if ((nil ~= _199_) and _200_()) then
+            local char = _199_
+            c = char
+            index = 2
+            return c:byte()
+          elseif true then
+            local _ = _199_
+            done_3f = true
+            return nil
+          else
+            return nil
+          end
+        end
+      else
+        return nil
+      end
+    end
+    local function _204_()
+      c = ""
+      return nil
+    end
+    return _198_, _204_
+  end
+  local function string_stream(str, _3foptions)
+    local str0 = str:gsub("^#!", ";;")
+    if _3foptions then
+      _3foptions.source = str0
+    else
+    end
+    local index = 1
+    local function _206_()
+      local r = str0:byte(index)
+      index = (index + 1)
+      return r
+    end
+    return _206_
+  end
+  local delims = {[40] = 41, [41] = true, [91] = 93, [93] = true, [123] = 125, [125] = true}
+  local function sym_char_3f(b)
+    local b0
+    if ("number" == type(b)) then
+      b0 = b
+    else
+      b0 = string.byte(b)
+    end
+    return ((32 < b0) and not delims[b0] and (b0 ~= 127) and (b0 ~= 34) and (b0 ~= 39) and (b0 ~= 126) and (b0 ~= 59) and (b0 ~= 44) and (b0 ~= 64) and (b0 ~= 96))
+  end
+  local prefixes = {[35] = "hashfn", [39] = "quote", [44] = "unquote", [96] = "quote"}
+  local function char_starter_3f(b)
+    return ((function(_208_,_209_,_210_) return (_208_ < _209_) and (_209_ < _210_) end)(1,b,127) or (function(_211_,_212_,_213_) return (_211_ < _212_) and (_212_ < _213_) end)(192,b,247))
+  end
+  local function parser_fn(getbyte, filename, _214_)
+    local _arg_215_ = _214_
+    local source = _arg_215_["source"]
+    local unfriendly = _arg_215_["unfriendly"]
+    local comments = _arg_215_["comments"]
+    local options = _arg_215_
+    local stack = {}
+    local line, byteindex, col, prev_col, lastb = 1, 0, 0, 0, nil
+    local function ungetb(ub)
+      if char_starter_3f(ub) then
+        col = (col - 1)
+      else
+      end
+      if (ub == 10) then
+        line, col = (line - 1), prev_col
+      else
+      end
+      byteindex = (byteindex - 1)
+      lastb = ub
+      return nil
+    end
+    local function getb()
+      local r = nil
+      if lastb then
+        r, lastb = lastb, nil
+      else
+        r = getbyte({["stack-size"] = #stack})
+      end
+      byteindex = (byteindex + 1)
+      if (r and char_starter_3f(r)) then
+        col = (col + 1)
+      else
+      end
+      if (r == 10) then
+        line, col, prev_col = (line + 1), 0, col
+      else
+      end
+      return r
+    end
+    local function whitespace_3f(b)
+      local function _225_()
+        local t_224_ = options.whitespace
+        if (nil ~= t_224_) then
+          t_224_ = (t_224_)[b]
+        else
+        end
+        return t_224_
+      end
+      return ((b == 32) or (function(_221_,_222_,_223_) return (_221_ <= _222_) and (_222_ <= _223_) end)(9,b,13) or _225_())
+    end
+    local function parse_error(msg, _3fcol_adjust)
+      local col0 = (col + (_3fcol_adjust or -1))
+      if (nil == utils["hook-opts"]("parse-error", options, msg, filename, (line or "?"), col0, source, utils.root.reset)) then
+        utils.root.reset()
+        if (unfriendly or not _G.io or not _G.io.read) then
+          return error(string.format("%s:%s:%s Parse error: %s", filename, (line or "?"), col0, msg), 0)
+        else
+          return friend["parse-error"](msg, filename, (line or "?"), col0, source, options)
+        end
+      else
+        return nil
+      end
+    end
+    local function parse_stream()
+      local whitespace_since_dispatch, done_3f, retval = true
+      local function set_source_fields(source0)
+        source0.byteend, source0.endcol = byteindex, (col - 1)
+        return nil
+      end
+      local function dispatch(v)
+        local _229_ = stack[#stack]
+        if (_229_ == nil) then
+          retval, done_3f, whitespace_since_dispatch = v, true, false
+          return nil
+        elseif ((_G.type(_229_) == "table") and (nil ~= (_229_).prefix)) then
+          local prefix = (_229_).prefix
+          local source0
+          do
+            local _230_ = table.remove(stack)
+            set_source_fields(_230_)
+            source0 = _230_
+          end
+          local list = utils.list(utils.sym(prefix, source0), v)
+          for k, v0 in pairs(source0) do
+            list[k] = v0
+          end
+          return dispatch(list)
+        elseif (nil ~= _229_) then
+          local top = _229_
+          whitespace_since_dispatch = false
+          return table.insert(top, v)
+        else
+          return nil
+        end
+      end
+      local function badend()
+        local accum = utils.map(stack, "closer")
+        local _232_
+        if (#stack == 1) then
+          _232_ = ""
+        else
+          _232_ = "s"
+        end
+        return parse_error(string.format("expected closing delimiter%s %s", _232_, string.char(unpack(accum))))
+      end
+      local function skip_whitespace(b)
+        if (b and whitespace_3f(b)) then
+          whitespace_since_dispatch = true
+          return skip_whitespace(getb())
+        elseif (not b and (0 < #stack)) then
+          return badend()
+        else
+          return b
+        end
+      end
+      local function parse_comment(b, contents)
+        if (b and (10 ~= b)) then
+          local function _236_()
+            local _235_ = contents
+            table.insert(_235_, string.char(b))
+            return _235_
+          end
+          return parse_comment(getb(), _236_())
+        elseif comments then
+          ungetb(10)
+          return dispatch(utils.comment(table.concat(contents), {line = line, filename = filename}))
+        else
+          return nil
+        end
+      end
+      local function open_table(b)
+        if not whitespace_since_dispatch then
+          parse_error(("expected whitespace before opening delimiter " .. string.char(b)))
+        else
+        end
+        return table.insert(stack, {bytestart = byteindex, closer = delims[b], filename = filename, line = line, col = (col - 1)})
+      end
+      local function close_list(list)
+        return dispatch(setmetatable(list, getmetatable(utils.list())))
+      end
+      local function close_sequence(tbl)
+        local val = utils.sequence(unpack(tbl))
+        for k, v in pairs(tbl) do
+          getmetatable(val)[k] = v
+        end
+        return dispatch(val)
+      end
+      local function add_comment_at(comments0, index, node)
+        local _239_ = (comments0)[index]
+        if (nil ~= _239_) then
+          local existing = _239_
+          return table.insert(existing, node)
+        elseif true then
+          local _ = _239_
+          comments0[index] = {node}
+          return nil
+        else
+          return nil
+        end
+      end
+      local function next_noncomment(tbl, i)
+        if utils["comment?"](tbl[i]) then
+          return next_noncomment(tbl, (i + 1))
+        elseif (utils.sym(":") == tbl[i]) then
+          return tostring(tbl[(i + 1)])
+        else
+          return tbl[i]
+        end
+      end
+      local function extract_comments(tbl)
+        local comments0 = {keys = {}, values = {}, last = {}}
+        while utils["comment?"](tbl[#tbl]) do
+          table.insert(comments0.last, 1, table.remove(tbl))
+        end
+        local last_key_3f = false
+        for i, node in ipairs(tbl) do
+          if not utils["comment?"](node) then
+            last_key_3f = not last_key_3f
+          elseif last_key_3f then
+            add_comment_at(comments0.values, next_noncomment(tbl, i), node)
+          else
+            add_comment_at(comments0.keys, next_noncomment(tbl, i), node)
+          end
+        end
+        for i = #tbl, 1, -1 do
+          if utils["comment?"](tbl[i]) then
+            table.remove(tbl, i)
+          else
+          end
+        end
+        return comments0
+      end
+      local function close_curly_table(tbl)
+        local comments0 = extract_comments(tbl)
+        local keys = {}
+        local val = {}
+        if ((#tbl % 2) ~= 0) then
+          byteindex = (byteindex - 1)
+          parse_error("expected even number of values in table literal")
+        else
+        end
+        setmetatable(val, tbl)
+        for i = 1, #tbl, 2 do
+          if ((tostring(tbl[i]) == ":") and utils["sym?"](tbl[(i + 1)]) and utils["sym?"](tbl[i])) then
+            tbl[i] = tostring(tbl[(i + 1)])
+          else
+          end
+          val[tbl[i]] = tbl[(i + 1)]
+          table.insert(keys, tbl[i])
+        end
+        tbl.comments = comments0
+        tbl.keys = keys
+        return dispatch(val)
+      end
+      local function close_table(b)
+        local top = table.remove(stack)
+        if (top == nil) then
+          parse_error(("unexpected closing delimiter " .. string.char(b)))
+        else
+        end
+        if (top.closer and (top.closer ~= b)) then
+          parse_error(("mismatched closing delimiter " .. string.char(b) .. ", expected " .. string.char(top.closer)))
+        else
+        end
+        set_source_fields(top)
+        if (b == 41) then
+          return close_list(top)
+        elseif (b == 93) then
+          return close_sequence(top)
+        else
+          return close_curly_table(top)
+        end
+      end
+      local function parse_string_loop(chars, b, state)
+        table.insert(chars, b)
+        local state0
+        do
+          local _249_ = {state, b}
+          if ((_G.type(_249_) == "table") and ((_249_)[1] == "base") and ((_249_)[2] == 92)) then
+            state0 = "backslash"
+          elseif ((_G.type(_249_) == "table") and ((_249_)[1] == "base") and ((_249_)[2] == 34)) then
+            state0 = "done"
+          elseif ((_G.type(_249_) == "table") and ((_249_)[1] == "backslash") and ((_249_)[2] == 10)) then
+            table.remove(chars, (#chars - 1))
+            state0 = "base"
+          elseif true then
+            local _ = _249_
+            state0 = "base"
+          else
+            state0 = nil
+          end
+        end
+        if (b and (state0 ~= "done")) then
+          return parse_string_loop(chars, getb(), state0)
+        else
+          return b
+        end
+      end
+      local function escape_char(c)
+        return ({[7] = "\\a", [8] = "\\b", [9] = "\\t", [10] = "\\n", [11] = "\\v", [12] = "\\f", [13] = "\\r"})[c:byte()]
+      end
+      local function parse_string()
+        table.insert(stack, {closer = 34})
+        local chars = {34}
+        if not parse_string_loop(chars, getb(), "base") then
+          badend()
+        else
+        end
+        table.remove(stack)
+        local raw = string.char(unpack(chars))
+        local formatted = raw:gsub("[\7-\13]", escape_char)
+        local _253_ = (rawget(_G, "loadstring") or load)(("return " .. formatted))
+        if (nil ~= _253_) then
+          local load_fn = _253_
+          return dispatch(load_fn())
+        elseif (_253_ == nil) then
+          return parse_error(("Invalid string: " .. raw))
+        else
+          return nil
+        end
+      end
+      local function parse_prefix(b)
+        table.insert(stack, {prefix = prefixes[b], filename = filename, line = line, bytestart = byteindex, col = (col - 1)})
+        local nextb = getb()
+        if (whitespace_3f(nextb) or (true == delims[nextb])) then
+          if (b ~= 35) then
+            parse_error("invalid whitespace after quoting prefix")
+          else
+          end
+          table.remove(stack)
+          dispatch(utils.sym("#"))
+        else
+        end
+        return ungetb(nextb)
+      end
+      local function parse_sym_loop(chars, b)
+        if (b and sym_char_3f(b)) then
+          table.insert(chars, b)
+          return parse_sym_loop(chars, getb())
+        else
+          if b then
+            ungetb(b)
+          else
+          end
+          return chars
+        end
+      end
+      local function parse_number(rawstr)
+        local number_with_stripped_underscores = (not rawstr:find("^_") and rawstr:gsub("_", ""))
+        if rawstr:match("^%d") then
+          dispatch((tonumber(number_with_stripped_underscores) or parse_error(("could not read number \"" .. rawstr .. "\""))))
+          return true
+        else
+          local _259_ = tonumber(number_with_stripped_underscores)
+          if (nil ~= _259_) then
+            local x = _259_
+            dispatch(x)
+            return true
+          elseif true then
+            local _ = _259_
+            return false
+          else
+            return nil
+          end
+        end
+      end
+      local function check_malformed_sym(rawstr)
+        local function col_adjust(pat)
+          return (rawstr:find(pat) - utils.len(rawstr) - 1)
+        end
+        if (rawstr:match("^~") and (rawstr ~= "~=")) then
+          return parse_error("invalid character: ~")
+        elseif rawstr:match("%.[0-9]") then
+          return parse_error(("can't start multisym segment with a digit: " .. rawstr), col_adjust("%.[0-9]"))
+        elseif (rawstr:match("[%.:][%.:]") and (rawstr ~= "..") and (rawstr ~= "$...")) then
+          return parse_error(("malformed multisym: " .. rawstr), col_adjust("[%.:][%.:]"))
+        elseif ((rawstr ~= ":") and rawstr:match(":$")) then
+          return parse_error(("malformed multisym: " .. rawstr), col_adjust(":$"))
+        elseif rawstr:match(":.+[%.:]") then
+          return parse_error(("method must be last component of multisym: " .. rawstr), col_adjust(":.+[%.:]"))
+        else
+          return rawstr
+        end
+      end
+      local function parse_sym(b)
+        local source0 = {bytestart = byteindex, filename = filename, line = line, col = (col - 1)}
+        local rawstr = string.char(unpack(parse_sym_loop({b}, getb())))
+        set_source_fields(source0)
+        if (rawstr == "true") then
+          return dispatch(true)
+        elseif (rawstr == "false") then
+          return dispatch(false)
+        elseif (rawstr == "...") then
+          return dispatch(utils.varg(source0))
+        elseif rawstr:match("^:.+$") then
+          return dispatch(rawstr:sub(2))
+        elseif not parse_number(rawstr) then
+          return dispatch(utils.sym(check_malformed_sym(rawstr), source0))
+        else
+          return nil
+        end
+      end
+      local function parse_loop(b)
+        if not b then
+        elseif (b == 59) then
+          parse_comment(getb(), {";"})
+        elseif (type(delims[b]) == "number") then
+          open_table(b)
+        elseif delims[b] then
+          close_table(b)
+        elseif (b == 34) then
+          parse_string(b)
+        elseif prefixes[b] then
+          parse_prefix(b)
+        elseif (sym_char_3f(b) or (b == string.byte("~"))) then
+          parse_sym(b)
+        elseif not utils["hook-opts"]("illegal-char", options, b, getb, ungetb, dispatch) then
+          parse_error(("invalid character: " .. string.char(b)))
+        else
+        end
+        if not b then
+          return nil
+        elseif done_3f then
+          return true, retval
+        else
+          return parse_loop(skip_whitespace(getb()))
+        end
+      end
+      return parse_loop(skip_whitespace(getb()))
+    end
+    local function _266_()
+      stack, line, byteindex, col, lastb = {}, 1, 0, 0, nil
+      return nil
+    end
+    return parse_stream, _266_
+  end
+  local function parser(stream_or_string, _3ffilename, _3foptions)
+    local filename = (_3ffilename or "unknown")
+    local options = (_3foptions or utils.root.options or {})
+    assert(("string" == type(filename)), "expected filename as second argument to parser")
+    if ("string" == type(stream_or_string)) then
+      return parser_fn(string_stream(stream_or_string, options), filename, options)
+    else
+      return parser_fn(stream_or_string, filename, options)
+    end
+  end
+  return {granulate = granulate, parser = parser, ["string-stream"] = string_stream, ["sym-char?"] = sym_char_3f}
+end
+local utils
+package.preload["fennel.view"] = package.preload["fennel.view"] or function(...)
+  local type_order = {number = 1, boolean = 2, string = 3, table = 4, ["function"] = 5, userdata = 6, thread = 7}
+  local default_opts = {["one-line?"] = false, ["detect-cycles?"] = true, ["empty-as-sequence?"] = false, ["metamethod?"] = true, ["prefer-colon?"] = false, ["escape-newlines?"] = false, ["utf8?"] = true, ["line-length"] = 80, depth = 128, ["max-sparse-gap"] = 10}
+  local lua_pairs = pairs
+  local lua_ipairs = ipairs
+  local function pairs(t)
+    local _1_ = getmetatable(t)
+    if ((_G.type(_1_) == "table") and (nil ~= (_1_).__pairs)) then
+      local p = (_1_).__pairs
+      return p(t)
+    elseif true then
+      local _ = _1_
+      return lua_pairs(t)
+    else
+      return nil
+    end
+  end
+  local function ipairs(t)
+    local _3_ = getmetatable(t)
+    if ((_G.type(_3_) == "table") and (nil ~= (_3_).__ipairs)) then
+      local i = (_3_).__ipairs
+      return i(t)
+    elseif true then
+      local _ = _3_
+      return lua_ipairs(t)
+    else
+      return nil
+    end
+  end
+  local function length_2a(t)
+    local _5_ = getmetatable(t)
+    if ((_G.type(_5_) == "table") and (nil ~= (_5_).__len)) then
+      local l = (_5_).__len
+      return l(t)
+    elseif true then
+      local _ = _5_
+      return #t
+    else
+      return nil
+    end
+  end
+  local function get_default(key)
+    local _7_ = default_opts[key]
+    if (_7_ == nil) then
+      return error(("option '%s' doesn't have a default value, use the :after key to set it"):format(tostring(key)))
+    elseif (nil ~= _7_) then
+      local v = _7_
+      return v
+    else
+      return nil
+    end
+  end
+  local function getopt(options, key)
+    local val = options[key]
+    local _9_ = val
+    if ((_G.type(_9_) == "table") and (nil ~= (_9_).once)) then
+      local val_2a = (_9_).once
+      return val_2a
+    elseif true then
+      local _ = _9_
+      return val
+    else
+      return nil
+    end
+  end
+  local function normalize_opts(options)
+    local tbl_13_auto = {}
+    for k, v in pairs(options) do
+      local k_14_auto, v_15_auto = nil, nil
+      local function _12_()
+        local _11_ = v
+        if ((_G.type(_11_) == "table") and (nil ~= (_11_).after)) then
+          local val = (_11_).after
+          return val
+        else
+          local function _13_()
+            return v.once
+          end
+          if ((_G.type(_11_) == "table") and _13_()) then
+            return get_default(k)
+          elseif true then
+            local _ = _11_
+            return v
+          else
+            return nil
+          end
+        end
+      end
+      k_14_auto, v_15_auto = k, _12_()
+      if ((k_14_auto ~= nil) and (v_15_auto ~= nil)) then
+        tbl_13_auto[k_14_auto] = v_15_auto
+      else
+      end
+    end
+    return tbl_13_auto
+  end
+  local function sort_keys(_16_, _18_)
+    local _arg_17_ = _16_
+    local a = _arg_17_[1]
+    local _arg_19_ = _18_
+    local b = _arg_19_[1]
+    local ta = type(a)
+    local tb = type(b)
+    if ((ta == tb) and ((ta == "string") or (ta == "number"))) then
+      return (a < b)
+    else
+      local dta = type_order[ta]
+      local dtb = type_order[tb]
+      if (dta and dtb) then
+        return (dta < dtb)
+      elseif dta then
+        return true
+      elseif dtb then
+        return false
+      else
+        return (ta < tb)
+      end
+    end
+  end
+  local function max_index_gap(kv)
+    local gap = 0
+    if (0 < length_2a(kv)) then
+      local i = 0
+      for _, _22_ in ipairs(kv) do
+        local _each_23_ = _22_
+        local k = _each_23_[1]
+        if (gap < (k - i)) then
+          gap = (k - i)
+        else
+        end
+        i = k
+      end
+    else
+    end
+    return gap
+  end
+  local function fill_gaps(kv)
+    local missing_indexes = {}
+    local i = 0
+    for _, _26_ in ipairs(kv) do
+      local _each_27_ = _26_
+      local j = _each_27_[1]
+      i = (i + 1)
+      while (i < j) do
+        table.insert(missing_indexes, i)
+        i = (i + 1)
+      end
+    end
+    for _, k in ipairs(missing_indexes) do
+      table.insert(kv, k, {k})
+    end
+    return nil
+  end
+  local function table_kv_pairs(t, options)
+    local assoc_3f = false
+    local kv = {}
+    local insert = table.insert
+    for k, v in pairs(t) do
+      if ((type(k) ~= "number") or (k < 1)) then
+        assoc_3f = true
+      else
+      end
+      insert(kv, {k, v})
+    end
+    table.sort(kv, sort_keys)
+    if not assoc_3f then
+      if (options["max-sparse-gap"] < max_index_gap(kv)) then
+        assoc_3f = true
+      else
+        fill_gaps(kv)
+      end
+    else
+    end
+    if (length_2a(kv) == 0) then
+      return kv, "empty"
+    else
+      local function _31_()
+        if assoc_3f then
+          return "table"
+        else
+          return "seq"
+        end
+      end
+      return kv, _31_()
+    end
+  end
+  local function count_table_appearances(t, appearances)
+    if (type(t) == "table") then
+      if not appearances[t] then
+        appearances[t] = 1
+        for k, v in pairs(t) do
+          count_table_appearances(k, appearances)
+          count_table_appearances(v, appearances)
+        end
+      else
+        appearances[t] = ((appearances[t] or 0) + 1)
+      end
+    else
+    end
+    return appearances
+  end
+  local function save_table(t, seen)
+    local seen0 = (seen or {len = 0})
+    local id = (seen0.len + 1)
+    if not (seen0)[t] then
+      seen0[t] = id
+      seen0.len = id
+    else
+    end
+    return seen0
+  end
+  local function detect_cycle(t, seen, _3fk)
+    if ("table" == type(t)) then
+      seen[t] = true
+      local _36_, _37_ = next(t, _3fk)
+      if ((nil ~= _36_) and (nil ~= _37_)) then
+        local k = _36_
+        local v = _37_
+        return (seen[k] or detect_cycle(k, seen) or seen[v] or detect_cycle(v, seen) or detect_cycle(t, seen, k))
+      else
+        return nil
+      end
+    else
+      return nil
+    end
+  end
+  local function visible_cycle_3f(t, options)
+    return (getopt(options, "detect-cycles?") and detect_cycle(t, {}) and save_table(t, options.seen) and (1 < (options.appearances[t] or 0)))
+  end
+  local function table_indent(indent, id)
+    local opener_length
+    if id then
+      opener_length = (length_2a(tostring(id)) + 2)
+    else
+      opener_length = 1
+    end
+    return (indent + opener_length)
+  end
+  local pp = nil
+  local function concat_table_lines(elements, options, multiline_3f, indent, table_type, prefix, last_comment_3f)
+    local indent_str = ("\n" .. string.rep(" ", indent))
+    local open
+    local function _41_()
+      if ("seq" == table_type) then
+        return "["
+      else
+        return "{"
+      end
+    end
+    open = ((prefix or "") .. _41_())
+    local close
+    if ("seq" == table_type) then
+      close = "]"
+    else
+      close = "}"
+    end
+    local oneline = (open .. table.concat(elements, " ") .. close)
+    if (not getopt(options, "one-line?") and (multiline_3f or (options["line-length"] < (indent + length_2a(oneline))) or last_comment_3f)) then
+      local function _43_()
+        if last_comment_3f then
+          return indent_str
+        else
+          return ""
+        end
+      end
+      return (open .. table.concat(elements, indent_str) .. _43_() .. close)
+    else
+      return oneline
+    end
+  end
+  local function utf8_len(x)
+    local n = 0
+    for _ in string.gmatch(x, "[%z\1-\127\192-\247]") do
+      n = (n + 1)
+    end
+    return n
+  end
+  local function comment_3f(x)
+    if ("table" == type(x)) then
+      local fst = x[1]
+      return (("string" == type(fst)) and (nil ~= fst:find("^;")))
+    else
+      return false
+    end
+  end
+  local function pp_associative(t, kv, options, indent)
+    local multiline_3f = false
+    local id = options.seen[t]
+    if (options.depth <= options.level) then
+      return "{...}"
+    elseif (id and getopt(options, "detect-cycles?")) then
+      return ("@" .. id .. "{...}")
+    else
+      local visible_cycle_3f0 = visible_cycle_3f(t, options)
+      local id0 = (visible_cycle_3f0 and options.seen[t])
+      local indent0 = table_indent(indent, id0)
+      local slength
+      if getopt(options, "utf8?") then
+        slength = utf8_len
+      else
+        local function _46_(_241)
+          return #_241
+        end
+        slength = _46_
+      end
+      local prefix
+      if visible_cycle_3f0 then
+        prefix = ("@" .. id0)
+      else
+        prefix = ""
+      end
+      local items
+      do
+        local options0 = normalize_opts(options)
+        local tbl_16_auto = {}
+        local i_17_auto = #tbl_16_auto
+        for _, _49_ in ipairs(kv) do
+          local _each_50_ = _49_
+          local k = _each_50_[1]
+          local v = _each_50_[2]
+          local val_18_auto
+          do
+            local k0 = pp(k, options0, (indent0 + 1), true)
+            local v0 = pp(v, options0, (indent0 + slength(k0) + 1))
+            multiline_3f = (multiline_3f or k0:find("\n") or v0:find("\n"))
+            val_18_auto = (k0 .. " " .. v0)
+          end
+          if (nil ~= val_18_auto) then
+            i_17_auto = (i_17_auto + 1)
+            do end (tbl_16_auto)[i_17_auto] = val_18_auto
+          else
+          end
+        end
+        items = tbl_16_auto
+      end
+      return concat_table_lines(items, options, multiline_3f, indent0, "table", prefix, false)
+    end
+  end
+  local function pp_sequence(t, kv, options, indent)
+    local multiline_3f = false
+    local id = options.seen[t]
+    if (options.depth <= options.level) then
+      return "[...]"
+    elseif (id and getopt(options, "detect-cycles?")) then
+      return ("@" .. id .. "[...]")
+    else
+      local visible_cycle_3f0 = visible_cycle_3f(t, options)
+      local id0 = (visible_cycle_3f0 and options.seen[t])
+      local indent0 = table_indent(indent, id0)
+      local prefix
+      if visible_cycle_3f0 then
+        prefix = ("@" .. id0)
+      else
+        prefix = ""
+      end
+      local last_comment_3f = comment_3f(t[#t])
+      local items
+      do
+        local options0 = normalize_opts(options)
+        local tbl_16_auto = {}
+        local i_17_auto = #tbl_16_auto
+        for _, _54_ in ipairs(kv) do
+          local _each_55_ = _54_
+          local _0 = _each_55_[1]
+          local v = _each_55_[2]
+          local val_18_auto
+          do
+            local v0 = pp(v, options0, indent0)
+            multiline_3f = (multiline_3f or v0:find("\n") or v0:find("^;"))
+            val_18_auto = v0
+          end
+          if (nil ~= val_18_auto) then
+            i_17_auto = (i_17_auto + 1)
+            do end (tbl_16_auto)[i_17_auto] = val_18_auto
+          else
+          end
+        end
+        items = tbl_16_auto
+      end
+      return concat_table_lines(items, options, multiline_3f, indent0, "seq", prefix, last_comment_3f)
+    end
+  end
+  local function concat_lines(lines, options, indent, force_multi_line_3f)
+    if (length_2a(lines) == 0) then
+      if getopt(options, "empty-as-sequence?") then
+        return "[]"
+      else
+        return "{}"
+      end
+    else
+      local oneline
+      local _59_
+      do
+        local tbl_16_auto = {}
+        local i_17_auto = #tbl_16_auto
+        for _, line in ipairs(lines) do
+          local val_18_auto = line:gsub("^%s+", "")
+          if (nil ~= val_18_auto) then
+            i_17_auto = (i_17_auto + 1)
+            do end (tbl_16_auto)[i_17_auto] = val_18_auto
+          else
+          end
+        end
+        _59_ = tbl_16_auto
+      end
+      oneline = table.concat(_59_, " ")
+      if (not getopt(options, "one-line?") and (force_multi_line_3f or oneline:find("\n") or (options["line-length"] < (indent + length_2a(oneline))))) then
+        return table.concat(lines, ("\n" .. string.rep(" ", indent)))
+      else
+        return oneline
+      end
+    end
+  end
+  local function pp_metamethod(t, metamethod, options, indent)
+    if (options.depth <= options.level) then
+      if getopt(options, "empty-as-sequence?") then
+        return "[...]"
+      else
+        return "{...}"
+      end
+    else
+      local _
+      local function _64_(_241)
+        return visible_cycle_3f(_241, options)
+      end
+      options["visible-cycle?"] = _64_
+      _ = nil
+      local lines, force_multi_line_3f = nil, nil
+      do
+        local options0 = normalize_opts(options)
+        lines, force_multi_line_3f = metamethod(t, pp, options0, indent)
+      end
+      options["visible-cycle?"] = nil
+      local _65_ = type(lines)
+      if (_65_ == "string") then
+        return lines
+      elseif (_65_ == "table") then
+        return concat_lines(lines, options, indent, force_multi_line_3f)
+      elseif true then
+        local _0 = _65_
+        return error("__fennelview metamethod must return a table of lines")
+      else
+        return nil
+      end
+    end
+  end
+  local function pp_table(x, options, indent)
+    options.level = (options.level + 1)
+    local x0
+    do
+      local _68_
+      if getopt(options, "metamethod?") then
+        local _69_ = x
+        if (nil ~= _69_) then
+          local _70_ = getmetatable(_69_)
+          if (nil ~= _70_) then
+            _68_ = (_70_).__fennelview
+          else
+            _68_ = _70_
+          end
+        else
+          _68_ = _69_
+        end
+      else
+        _68_ = nil
+      end
+      if (nil ~= _68_) then
+        local metamethod = _68_
+        x0 = pp_metamethod(x, metamethod, options, indent)
+      elseif true then
+        local _ = _68_
+        local _74_, _75_ = table_kv_pairs(x, options)
+        if (true and (_75_ == "empty")) then
+          local _0 = _74_
+          if getopt(options, "empty-as-sequence?") then
+            x0 = "[]"
+          else
+            x0 = "{}"
+          end
+        elseif ((nil ~= _74_) and (_75_ == "table")) then
+          local kv = _74_
+          x0 = pp_associative(x, kv, options, indent)
+        elseif ((nil ~= _74_) and (_75_ == "seq")) then
+          local kv = _74_
+          x0 = pp_sequence(x, kv, options, indent)
+        else
+          x0 = nil
+        end
+      else
+        x0 = nil
+      end
+    end
+    options.level = (options.level - 1)
+    return x0
+  end
+  local function number__3estring(n)
+    local _79_ = string.gsub(tostring(n), ",", ".")
+    return _79_
+  end
+  local function colon_string_3f(s)
+    return s:find("^[-%w?^_!$%&*+./@|<=>]+$")
+  end
+  local utf8_inits = {{["min-byte"] = 0, ["max-byte"] = 127, ["min-code"] = 0, ["max-code"] = 127, len = 1}, {["min-byte"] = 192, ["max-byte"] = 223, ["min-code"] = 128, ["max-code"] = 2047, len = 2}, {["min-byte"] = 224, ["max-byte"] = 239, ["min-code"] = 2048, ["max-code"] = 65535, len = 3}, {["min-byte"] = 240, ["max-byte"] = 247, ["min-code"] = 65536, ["max-code"] = 1114111, len = 4}}
+  local function utf8_escape(str)
+    local function validate_utf8(str0, index)
+      local inits = utf8_inits
+      local byte = string.byte(str0, index)
+      local init
+      do
+        local ret = nil
+        for _, init0 in ipairs(inits) do
+          if ret then break end
+          ret = (byte and (function(_80_,_81_,_82_) return (_80_ <= _81_) and (_81_ <= _82_) end)(init0["min-byte"],byte,init0["max-byte"]) and init0)
+        end
+        init = ret
+      end
+      local code
+      local function _83_()
+        local code0
+        if init then
+          code0 = (byte - init["min-byte"])
+        else
+          code0 = nil
+        end
+        for i = (index + 1), (index + init.len + -1) do
+          local byte0 = string.byte(str0, i)
+          code0 = (byte0 and code0 and (function(_85_,_86_,_87_) return (_85_ <= _86_) and (_86_ <= _87_) end)(128,byte0,191) and ((code0 * 64) + (byte0 - 128)))
+        end
+        return code0
+      end
+      code = (init and _83_())
+      if (code and (function(_88_,_89_,_90_) return (_88_ <= _89_) and (_89_ <= _90_) end)(init["min-code"],code,init["max-code"]) and not (function(_91_,_92_,_93_) return (_91_ <= _92_) and (_92_ <= _93_) end)(55296,code,57343)) then
+        return init.len
+      else
+        return nil
+      end
+    end
+    local index = 1
+    local output = {}
+    while (index <= #str) do
+      local nexti = (string.find(str, "[\128-\255]", index) or (#str + 1))
+      local len = validate_utf8(str, nexti)
+      table.insert(output, string.sub(str, index, (nexti + (len or 0) + -1)))
+      if (not len and (nexti <= #str)) then
+        table.insert(output, string.format("\\%03d", string.byte(str, nexti)))
+      else
+      end
+      if len then
+        index = (nexti + len)
+      else
+        index = (nexti + 1)
+      end
+    end
+    return table.concat(output)
+  end
+  local function pp_string(str, options, indent)
+    local len = length_2a(str)
+    local esc_newline_3f = ((len < 2) or (getopt(options, "escape-newlines?") and (len < (options["line-length"] - indent))))
+    local escs
+    local _97_
+    if esc_newline_3f then
+      _97_ = "\\n"
+    else
+      _97_ = "\n"
+    end
+    local function _99_(_241, _242)
+      return ("\\%03d"):format(_242:byte())
+    end
+    escs = setmetatable({["\7"] = "\\a", ["\8"] = "\\b", ["\12"] = "\\f", ["\11"] = "\\v", ["\13"] = "\\r", ["\9"] = "\\t", ["\\"] = "\\\\", ["\""] = "\\\"", ["\n"] = _97_}, {__index = _99_})
+    local str0 = ("\"" .. str:gsub("[%c\\\"]", escs) .. "\"")
+    if getopt(options, "utf8?") then
+      return utf8_escape(str0)
+    else
+      return str0
+    end
+  end
+  local function make_options(t, options)
+    local defaults
+    do
+      local tbl_13_auto = {}
+      for k, v in pairs(default_opts) do
+        local k_14_auto, v_15_auto = k, v
+        if ((k_14_auto ~= nil) and (v_15_auto ~= nil)) then
+          tbl_13_auto[k_14_auto] = v_15_auto
+        else
+        end
+      end
+      defaults = tbl_13_auto
+    end
+    local overrides = {level = 0, appearances = count_table_appearances(t, {}), seen = {len = 0}}
+    for k, v in pairs((options or {})) do
+      defaults[k] = v
+    end
+    for k, v in pairs(overrides) do
+      defaults[k] = v
+    end
+    return defaults
+  end
+  local function _102_(x, options, indent, colon_3f)
+    local indent0 = (indent or 0)
+    local options0 = (options or make_options(x))
+    local x0
+    if options0.preprocess then
+      x0 = options0.preprocess(x, options0)
+    else
+      x0 = x
+    end
+    local tv = type(x0)
+    local function _105_()
+      local _104_ = getmetatable(x0)
+      if (nil ~= _104_) then
+        return (_104_).__fennelview
+      else
+        return _104_
+      end
+    end
+    if ((tv == "table") or ((tv == "userdata") and _105_())) then
+      return pp_table(x0, options0, indent0)
+    elseif (tv == "number") then
+      return number__3estring(x0)
+    else
+      local function _107_()
+        if (colon_3f ~= nil) then
+          return colon_3f
+        elseif ("function" == type(options0["prefer-colon?"])) then
+          return options0["prefer-colon?"](x0)
+        else
+          return getopt(options0, "prefer-colon?")
+        end
+      end
+      if ((tv == "string") and colon_string_3f(x0) and _107_()) then
+        return (":" .. x0)
+      elseif (tv == "string") then
+        return pp_string(x0, options0, indent0)
+      elseif ((tv == "boolean") or (tv == "nil")) then
+        return tostring(x0)
+      else
+        return ("#<" .. tostring(x0) .. ">")
+      end
+    end
+  end
+  pp = _102_
+  local function view(x, _3foptions)
+    return pp(x, make_options(x, _3foptions), 0)
+  end
+  return view
+end
+package.preload["fennel.utils"] = package.preload["fennel.utils"] or function(...)
+  local view = require("fennel.view")
+  local version = "1.3.0"
+  local function luajit_vm_3f()
+    return ((nil ~= _G.jit) and (type(_G.jit) == "table") and (nil ~= _G.jit.on) and (nil ~= _G.jit.off) and (type(_G.jit.version_num) == "number"))
+  end
+  local function luajit_vm_version()
+    local jit_os
+    if (_G.jit.os == "OSX") then
+      jit_os = "macOS"
+    else
+      jit_os = _G.jit.os
+    end
+    return (_G.jit.version .. " " .. jit_os .. "/" .. _G.jit.arch)
+  end
+  local function fengari_vm_3f()
+    return ((nil ~= _G.fengari) and (type(_G.fengari) == "table") and (nil ~= _G.fengari.VERSION) and (type(_G.fengari.VERSION_NUM) == "number"))
+  end
+  local function fengari_vm_version()
+    return (_G.fengari.RELEASE .. " (" .. _VERSION .. ")")
+  end
+  local function lua_vm_version()
+    if luajit_vm_3f() then
+      return luajit_vm_version()
+    elseif fengari_vm_3f() then
+      return fengari_vm_version()
+    else
+      return ("PUC " .. _VERSION)
+    end
+  end
+  local function runtime_version()
+    return ("Fennel " .. version .. " on " .. lua_vm_version())
+  end
+  local function warn(message)
+    if (_G.io and _G.io.stderr) then
+      return (_G.io.stderr):write(("--WARNING: %s\n"):format(tostring(message)))
+    else
+      return nil
+    end
+  end
+  local len
+  do
+    local _112_, _113_ = pcall(require, "utf8")
+    if ((_112_ == true) and (nil ~= _113_)) then
+      local utf8 = _113_
+      len = utf8.len
+    elseif true then
+      local _ = _112_
+      len = string.len
+    else
+      len = nil
+    end
+  end
+  local function mt_keys_in_order(t, out, used_keys)
+    for _, k in ipairs(getmetatable(t).keys) do
+      if (t[k] and not used_keys[k]) then
+        used_keys[k] = true
+        table.insert(out, k)
+      else
+      end
+    end
+    for k in pairs(t) do
+      if not used_keys[k] then
+        table.insert(out, k)
+      else
+      end
+    end
+    return out
+  end
+  local function stablepairs(t)
+    local keys
+    local _118_
+    do
+      local t_117_ = getmetatable(t)
+      if (nil ~= t_117_) then
+        t_117_ = (t_117_).keys
+      else
+      end
+      _118_ = t_117_
+    end
+    if _118_ then
+      keys = mt_keys_in_order(t, {}, {})
+    else
+      local _120_
+      do
+        local tbl_16_auto = {}
+        local i_17_auto = #tbl_16_auto
+        for k in pairs(t) do
+          local val_18_auto = k
+          if (nil ~= val_18_auto) then
+            i_17_auto = (i_17_auto + 1)
+            do end (tbl_16_auto)[i_17_auto] = val_18_auto
+          else
+          end
+        end
+        _120_ = tbl_16_auto
+      end
+      local function _122_(_241, _242)
+        return (tostring(_241) < tostring(_242))
+      end
+      table.sort(_120_, _122_)
+      keys = _120_
+    end
+    local succ
+    do
+      local tbl_13_auto = {}
+      for i, k in ipairs(keys) do
+        local k_14_auto, v_15_auto = k, keys[(i + 1)]
+        if ((k_14_auto ~= nil) and (v_15_auto ~= nil)) then
+          tbl_13_auto[k_14_auto] = v_15_auto
+        else
+        end
+      end
+      succ = tbl_13_auto
+    end
+    local function stablenext(tbl, key)
+      local next_key
+      if (key == nil) then
+        next_key = keys[1]
+      else
+        next_key = succ[key]
+      end
+      return next_key, tbl[next_key]
+    end
+    return stablenext, t, nil
+  end
+  local function get_in(tbl, path, _3ffallback)
+    assert(("table" == type(tbl)), "get-in expects path to be a table")
+    if (0 == #path) then
+      return _3ffallback
+    else
+      local _126_
+      do
+        local t = tbl
+        for _, k in ipairs(path) do
+          if (nil == t) then break end
+          local _127_ = type(t)
+          if (_127_ == "table") then
+            t = t[k]
+          else
+            t = nil
+          end
+        end
+        _126_ = t
+      end
+      if (nil ~= _126_) then
+        local res = _126_
+        return res
+      elseif true then
+        local _ = _126_
+        return _3ffallback
+      else
+        return nil
+      end
+    end
+  end
+  local function map(t, f, _3fout)
+    local out = (_3fout or {})
+    local f0
+    if (type(f) == "function") then
+      f0 = f
+    else
+      local function _131_(_241)
+        return (_241)[f]
+      end
+      f0 = _131_
+    end
+    for _, x in ipairs(t) do
+      local _133_ = f0(x)
+      if (nil ~= _133_) then
+        local v = _133_
+        table.insert(out, v)
+      else
+      end
+    end
+    return out
+  end
+  local function kvmap(t, f, _3fout)
+    local out = (_3fout or {})
+    local f0
+    if (type(f) == "function") then
+      f0 = f
+    else
+      local function _135_(_241)
+        return (_241)[f]
+      end
+      f0 = _135_
+    end
+    for k, x in stablepairs(t) do
+      local _137_, _138_ = f0(k, x)
+      if ((nil ~= _137_) and (nil ~= _138_)) then
+        local key = _137_
+        local value = _138_
+        out[key] = value
+      elseif (nil ~= _137_) then
+        local value = _137_
+        table.insert(out, value)
+      else
+      end
+    end
+    return out
+  end
+  local function copy(from, _3fto)
+    local tbl_13_auto = (_3fto or {})
+    for k, v in pairs((from or {})) do
+      local k_14_auto, v_15_auto = k, v
+      if ((k_14_auto ~= nil) and (v_15_auto ~= nil)) then
+        tbl_13_auto[k_14_auto] = v_15_auto
+      else
+      end
+    end
+    return tbl_13_auto
+  end
+  local function member_3f(x, tbl, _3fn)
+    local _141_ = tbl[(_3fn or 1)]
+    if (_141_ == x) then
+      return true
+    elseif (_141_ == nil) then
+      return nil
+    elseif true then
+      local _ = _141_
+      return member_3f(x, tbl, ((_3fn or 1) + 1))
+    else
+      return nil
+    end
+  end
+  local function maxn(tbl)
+    local max = 0
+    for k in pairs(tbl) do
+      if ("number" == type(k)) then
+        max = math.max(max, k)
+      else
+        max = max
+      end
+    end
+    return max
+  end
+  local function every_3f(predicate, seq)
+    local result = true
+    for _, item in ipairs(seq) do
+      if not result then break end
+      result = predicate(item)
+    end
+    return result
+  end
+  local function allpairs(tbl)
+    assert((type(tbl) == "table"), "allpairs expects a table")
+    local t = tbl
+    local seen = {}
+    local function allpairs_next(_, state)
+      local next_state, value = next(t, state)
+      if seen[next_state] then
+        return allpairs_next(nil, next_state)
+      elseif next_state then
+        seen[next_state] = true
+        return next_state, value
+      else
+        local _144_ = getmetatable(t)
+        if ((_G.type(_144_) == "table") and true) then
+          local __index = (_144_).__index
+          if ("table" == type(__index)) then
+            t = __index
+            return allpairs_next(t)
+          else
+            return nil
+          end
+        else
+          return nil
+        end
+      end
+    end
+    return allpairs_next
+  end
+  local function deref(self)
+    return self[1]
+  end
+  local nil_sym = nil
+  local function list__3estring(self, _3fview, _3foptions, _3findent)
+    local safe = {}
+    local view0
+    if _3fview then
+      local function _148_(_241)
+        return _3fview(_241, _3foptions, _3findent)
+      end
+      view0 = _148_
+    else
+      view0 = view
+    end
+    local max = maxn(self)
+    for i = 1, max do
+      safe[i] = (((self[i] == nil) and nil_sym) or self[i])
+    end
+    return ("(" .. table.concat(map(safe, view0), " ", 1, max) .. ")")
+  end
+  local function comment_view(c)
+    return c, true
+  end
+  local function sym_3d(a, b)
+    return ((deref(a) == deref(b)) and (getmetatable(a) == getmetatable(b)))
+  end
+  local function sym_3c(a, b)
+    return (a[1] < tostring(b))
+  end
+  local symbol_mt = {__fennelview = deref, __tostring = deref, __eq = sym_3d, __lt = sym_3c, "SYMBOL"}
+  local expr_mt
+  local function _150_(x)
+    return tostring(deref(x))
+  end
+  expr_mt = {__tostring = _150_, "EXPR"}
+  local list_mt = {__fennelview = list__3estring, __tostring = list__3estring, "LIST"}
+  local comment_mt = {__fennelview = comment_view, __tostring = deref, __eq = sym_3d, __lt = sym_3c, "COMMENT"}
+  local sequence_marker = {"SEQUENCE"}
+  local varg_mt = {__fennelview = deref, __tostring = deref, "VARARG"}
+  local getenv
+  local function _151_()
+    return nil
+  end
+  getenv = ((os and os.getenv) or _151_)
+  local function debug_on_3f(flag)
+    local level = (getenv("FENNEL_DEBUG") or "")
+    return ((level == "all") or level:find(flag))
+  end
+  local function list(...)
+    return setmetatable({...}, list_mt)
+  end
+  local function sym(str, _3fsource)
+    local _152_
+    do
+      local tbl_13_auto = {str}
+      for k, v in pairs((_3fsource or {})) do
+        local k_14_auto, v_15_auto = nil, nil
+        if (type(k) == "string") then
+          k_14_auto, v_15_auto = k, v
+        else
+          k_14_auto, v_15_auto = nil
+        end
+        if ((k_14_auto ~= nil) and (v_15_auto ~= nil)) then
+          tbl_13_auto[k_14_auto] = v_15_auto
+        else
+        end
+      end
+      _152_ = tbl_13_auto
+    end
+    return setmetatable(_152_, symbol_mt)
+  end
+  nil_sym = sym("nil")
+  local function sequence(...)
+    local function _155_(seq, view0, inspector, indent)
+      local opts
+      do
+        local _156_ = inspector
+        _156_["empty-as-sequence?"] = {once = true, after = inspector["empty-as-sequence?"]}
+        _156_["metamethod?"] = {once = false, after = inspector["metamethod?"]}
+        opts = _156_
+      end
+      return view0(seq, opts, indent)
+    end
+    return setmetatable({...}, {sequence = sequence_marker, __fennelview = _155_})
+  end
+  local function expr(strcode, etype)
+    return setmetatable({type = etype, strcode}, expr_mt)
+  end
+  local function comment_2a(contents, _3fsource)
+    local _let_157_ = (_3fsource or {})
+    local filename = _let_157_["filename"]
+    local line = _let_157_["line"]
+    return setmetatable({filename = filename, line = line, contents}, comment_mt)
+  end
+  local function varg(_3fsource)
+    local _158_
+    do
+      local tbl_13_auto = {"..."}
+      for k, v in pairs((_3fsource or {})) do
+        local k_14_auto, v_15_auto = nil, nil
+        if (type(k) == "string") then
+          k_14_auto, v_15_auto = k, v
+        else
+          k_14_auto, v_15_auto = nil
+        end
+        if ((k_14_auto ~= nil) and (v_15_auto ~= nil)) then
+          tbl_13_auto[k_14_auto] = v_15_auto
+        else
+        end
+      end
+      _158_ = tbl_13_auto
+    end
+    return setmetatable(_158_, varg_mt)
+  end
+  local function expr_3f(x)
+    return ((type(x) == "table") and (getmetatable(x) == expr_mt) and x)
+  end
+  local function varg_3f(x)
+    return ((type(x) == "table") and (getmetatable(x) == varg_mt) and x)
+  end
+  local function list_3f(x)
+    return ((type(x) == "table") and (getmetatable(x) == list_mt) and x)
+  end
+  local function sym_3f(x)
+    return ((type(x) == "table") and (getmetatable(x) == symbol_mt) and x)
+  end
+  local function sequence_3f(x)
+    local mt = ((type(x) == "table") and getmetatable(x))
+    return (mt and (mt.sequence == sequence_marker) and x)
+  end
+  local function comment_3f(x)
+    return ((type(x) == "table") and (getmetatable(x) == comment_mt) and x)
+  end
+  local function table_3f(x)
+    return ((type(x) == "table") and not varg_3f(x) and (getmetatable(x) ~= list_mt) and (getmetatable(x) ~= symbol_mt) and not comment_3f(x) and x)
+  end
+  local function string_3f(x)
+    return (type(x) == "string")
+  end
+  local function multi_sym_3f(str)
+    if sym_3f(str) then
+      return multi_sym_3f(tostring(str))
+    elseif (type(str) ~= "string") then
+      return false
+    else
+      local function _161_()
+        local parts = {}
+        for part in str:gmatch("[^%.%:]+[%.%:]?") do
+          local last_char = part:sub(( - 1))
+          if (last_char == ":") then
+            parts["multi-sym-method-call"] = true
+          else
+          end
+          if ((last_char == ":") or (last_char == ".")) then
+            parts[(#parts + 1)] = part:sub(1, ( - 2))
+          else
+            parts[(#parts + 1)] = part
+          end
+        end
+        return ((0 < #parts) and parts)
+      end
+      return ((str:match("%.") or str:match(":")) and not str:match("%.%.") and (str:byte() ~= string.byte(".")) and (str:byte(( - 1)) ~= string.byte(".")) and _161_())
+    end
+  end
+  local function quoted_3f(symbol)
+    return symbol.quoted
+  end
+  local function idempotent_expr_3f(x)
+    return ((type(x) == "string") or (type(x) == "integer") or (type(x) == "number") or (sym_3f(x) and not multi_sym_3f(x)))
+  end
+  local function ast_source(ast)
+    if (table_3f(ast) or sequence_3f(ast)) then
+      return (getmetatable(ast) or {})
+    elseif ("table" == type(ast)) then
+      return ast
+    else
+      return {}
+    end
+  end
+  local function walk_tree(root, f, _3fcustom_iterator)
+    local function walk(iterfn, parent, idx, node)
+      if f(idx, node, parent) then
+        for k, v in iterfn(node) do
+          walk(iterfn, node, k, v)
+        end
+        return nil
+      else
+        return nil
+      end
+    end
+    walk((_3fcustom_iterator or pairs), nil, nil, root)
+    return root
+  end
+  local lua_keywords = {"and", "break", "do", "else", "elseif", "end", "false", "for", "function", "if", "in", "local", "nil", "not", "or", "repeat", "return", "then", "true", "until", "while", "goto"}
+  for i, v in ipairs(lua_keywords) do
+    lua_keywords[v] = i
+  end
+  local function valid_lua_identifier_3f(str)
+    return (str:match("^[%a_][%w_]*$") and not lua_keywords[str])
+  end
+  local propagated_options = {"allowedGlobals", "indent", "correlate", "useMetadata", "env", "compiler-env", "compilerEnv"}
+  local function propagate_options(options, subopts)
+    for _, name in ipairs(propagated_options) do
+      subopts[name] = options[name]
+    end
+    return subopts
+  end
+  local root
+  local function _167_()
+  end
+  root = {chunk = nil, scope = nil, options = nil, reset = _167_}
+  root["set-reset"] = function(_168_)
+    local _arg_169_ = _168_
+    local chunk = _arg_169_["chunk"]
+    local scope = _arg_169_["scope"]
+    local options = _arg_169_["options"]
+    local reset = _arg_169_["reset"]
+    root.reset = function()
+      root.chunk, root.scope, root.options, root.reset = chunk, scope, options, reset
+      return nil
+    end
+    return root.reset
+  end
+  local warned = {}
+  local function check_plugin_version(_170_)
+    local _arg_171_ = _170_
+    local name = _arg_171_["name"]
+    local versions = _arg_171_["versions"]
+    local plugin = _arg_171_
+    if (not member_3f(version:gsub("-dev", ""), (versions or {})) and not warned[plugin]) then
+      warned[plugin] = true
+      return warn(string.format("plugin %s does not support Fennel version %s", (name or "unknown"), version))
+    else
+      return nil
+    end
+  end
+  local function hook_opts(event, _3foptions, ...)
+    local plugins
+    local function _174_(...)
+      local t_173_ = _3foptions
+      if (nil ~= t_173_) then
+        t_173_ = (t_173_).plugins
+      else
+      end
+      return t_173_
+    end
+    local function _177_(...)
+      local t_176_ = root.options
+      if (nil ~= t_176_) then
+        t_176_ = (t_176_).plugins
+      else
+      end
+      return t_176_
+    end
+    plugins = (_174_(...) or _177_(...))
+    if plugins then
+      local result = nil
+      for _, plugin in ipairs(plugins) do
+        if result then break end
+        check_plugin_version(plugin)
+        local _179_ = plugin[event]
+        if (nil ~= _179_) then
+          local f = _179_
+          result = f(...)
+        else
+          result = nil
+        end
+      end
+      return result
+    else
+      return nil
+    end
+  end
+  local function hook(event, ...)
+    return hook_opts(event, root.options, ...)
+  end
+  return {warn = warn, allpairs = allpairs, stablepairs = stablepairs, copy = copy, ["get-in"] = get_in, kvmap = kvmap, map = map, ["walk-tree"] = walk_tree, ["member?"] = member_3f, maxn = maxn, ["every?"] = every_3f, list = list, sequence = sequence, sym = sym, varg = varg, expr = expr, comment = comment_2a, ["comment?"] = comment_3f, ["expr?"] = expr_3f, ["list?"] = list_3f, ["multi-sym?"] = multi_sym_3f, ["sequence?"] = sequence_3f, ["sym?"] = sym_3f, ["table?"] = table_3f, ["varg?"] = varg_3f, ["quoted?"] = quoted_3f, ["string?"] = string_3f, ["idempotent-expr?"] = idempotent_expr_3f, ["valid-lua-identifier?"] = valid_lua_identifier_3f, ["lua-keywords"] = lua_keywords, hook = hook, ["hook-opts"] = hook_opts, ["propagate-options"] = propagate_options, root = root, ["debug-on?"] = debug_on_3f, ["ast-source"] = ast_source, version = version, ["runtime-version"] = runtime_version, len = len, path = table.concat({"./?.fnl", "./?/init.fnl", getenv("FENNEL_PATH")}, ";"), ["macro-path"] = table.concat({"./?.fnl", "./?/init-macros.fnl", "./?/init.fnl", getenv("FENNEL_MACRO_PATH")}, ";")}
+end
+utils = require("fennel.utils")
+local parser = require("fennel.parser")
+local compiler = require("fennel.compiler")
+local specials = require("fennel.specials")
+local repl = require("fennel.repl")
+local view = require("fennel.view")
+local function eval_env(env, opts)
+  if (env == "_COMPILER") then
+    local env0 = specials["make-compiler-env"](nil, compiler.scopes.compiler, {}, opts)
+    if (opts.allowedGlobals == nil) then
+      opts.allowedGlobals = specials["current-global-names"](env0)
+    else
+    end
+    return specials["wrap-env"](env0)
+  else
+    return (env and specials["wrap-env"](env))
+  end
+end
+local function eval_opts(options, str)
+  local opts = utils.copy(options)
+  if (opts.allowedGlobals == nil) then
+    opts.allowedGlobals = specials["current-global-names"](opts.env)
+  else
+  end
+  if (not opts.filename and not opts.source) then
+    opts.source = str
+  else
+  end
+  if (opts.env == "_COMPILER") then
+    opts.scope = compiler["make-scope"](compiler.scopes.compiler)
+  else
+  end
+  return opts
+end
+local function eval(str, options, ...)
+  local opts = eval_opts(options, str)
+  local env = eval_env(opts.env, opts)
+  local lua_source = compiler["compile-string"](str, opts)
+  local loader
+  local function _753_(...)
+    if opts.filename then
+      return ("@" .. opts.filename)
+    else
+      return str
+    end
+  end
+  loader = specials["load-code"](lua_source, env, _753_(...))
+  opts.filename = nil
+  return loader(...)
+end
+local function dofile_2a(filename, options, ...)
+  local opts = utils.copy(options)
+  local f = assert(io.open(filename, "rb"))
+  local source = assert(f:read("*all"), ("Could not read " .. filename))
+  f:close()
+  opts.filename = filename
+  return eval(source, opts, ...)
+end
+local function syntax()
+  local body_3f = {"when", "with-open", "collect", "icollect", "fcollect", "lambda", "\206\187", "macro", "match", "match-try", "case", "case-try", "accumulate", "faccumulate", "doto"}
+  local binding_3f = {"collect", "icollect", "fcollect", "each", "for", "let", "with-open", "accumulate", "faccumulate"}
+  local define_3f = {"fn", "lambda", "\206\187", "var", "local", "macro", "macros", "global"}
+  local out = {}
+  for k, v in pairs(compiler.scopes.global.specials) do
+    local metadata = (compiler.metadata[v] or {})
+    do end (out)[k] = {["special?"] = true, ["body-form?"] = metadata["fnl/body-form?"], ["binding-form?"] = utils["member?"](k, binding_3f), ["define?"] = utils["member?"](k, define_3f)}
+  end
+  for k, v in pairs(compiler.scopes.global.macros) do
+    out[k] = {["macro?"] = true, ["body-form?"] = utils["member?"](k, body_3f), ["binding-form?"] = utils["member?"](k, binding_3f), ["define?"] = utils["member?"](k, define_3f)}
+  end
+  for k, v in pairs(_G) do
+    local _754_ = type(v)
+    if (_754_ == "function") then
+      out[k] = {["global?"] = true, ["function?"] = true}
+    elseif (_754_ == "table") then
+      for k2, v2 in pairs(v) do
+        if (("function" == type(v2)) and (k ~= "_G")) then
+          out[(k .. "." .. k2)] = {["function?"] = true, ["global?"] = true}
+        else
+        end
+      end
+      out[k] = {["global?"] = true}
+    else
+    end
+  end
+  return out
+end
+local mod = {list = utils.list, ["list?"] = utils["list?"], sym = utils.sym, ["sym?"] = utils["sym?"], ["multi-sym?"] = utils["multi-sym?"], sequence = utils.sequence, ["sequence?"] = utils["sequence?"], ["table?"] = utils["table?"], comment = utils.comment, ["comment?"] = utils["comment?"], varg = utils.varg, ["varg?"] = utils["varg?"], ["sym-char?"] = parser["sym-char?"], parser = parser.parser, compile = compiler.compile, ["compile-string"] = compiler["compile-string"], ["compile-stream"] = compiler["compile-stream"], eval = eval, repl = repl, view = view, dofile = dofile_2a, ["load-code"] = specials["load-code"], doc = specials.doc, metadata = compiler.metadata, traceback = compiler.traceback, version = utils.version, ["runtime-version"] = utils["runtime-version"], ["ast-source"] = utils["ast-source"], path = utils.path, ["macro-path"] = utils["macro-path"], ["macro-loaded"] = specials["macro-loaded"], ["macro-searchers"] = specials["macro-searchers"], ["search-module"] = specials["search-module"], ["make-searcher"] = specials["make-searcher"], searcher = specials["make-searcher"](), syntax = syntax, gensym = compiler.gensym, scope = compiler["make-scope"], mangle = compiler["global-mangling"], unmangle = compiler["global-unmangling"], compile1 = compiler.compile1, ["string-stream"] = parser["string-stream"], granulate = parser.granulate, loadCode = specials["load-code"], make_searcher = specials["make-searcher"], makeSearcher = specials["make-searcher"], searchModule = specials["search-module"], macroPath = utils["macro-path"], macroSearchers = specials["macro-searchers"], macroLoaded = specials["macro-loaded"], compileStream = compiler["compile-stream"], compileString = compiler["compile-string"], stringStream = parser["string-stream"], runtimeVersion = utils["runtime-version"]}
+mod.install = function(_3fopts)
+  table.insert((package.searchers or package.loaders), specials["make-searcher"](_3fopts))
+  return mod
+end
+utils["fennel-module"] = mod
+do
+  local module_name = "fennel.macros"
+  local _
+  local function _757_()
+    return mod
+  end
+  package.preload[module_name] = _757_
+  _ = nil
+  local env
+  do
+    local _758_ = specials["make-compiler-env"](nil, compiler.scopes.compiler, {})
+    do end (_758_)["utils"] = utils
+    _758_["fennel"] = mod
+    env = _758_
+  end
+  local built_ins = eval([===[;; These macros are awkward because their definition cannot rely on the any
+  ;; built-in macros, only special forms. (no when, no icollect, etc)
+  
+  (fn copy [t]
+    (let [out []]
+      (each [_ v (ipairs t)] (table.insert out v))
+      (setmetatable out (getmetatable t))))
+  
+  (fn ->* [val ...]
+    "Thread-first macro.
+  Take the first value and splice it into the second form as its first argument.
+  The value of the second form is spliced into the first arg of the third, etc."
+    (var x val)
+    (each [_ e (ipairs [...])]
+      (let [elt (if (list? e) (copy e) (list e))]
+        (table.insert elt 2 x)
+        (set x elt)))
+    x)
+  
+  (fn ->>* [val ...]
+    "Thread-last macro.
+  Same as ->, except splices the value into the last position of each form
+  rather than the first."
+    (var x val)
+    (each [_ e (ipairs [...])]
+      (let [elt (if (list? e) (copy e) (list e))]
+        (table.insert elt x)
+        (set x elt)))
+    x)
+  
+  (fn -?>* [val ?e ...]
+    "Nil-safe thread-first macro.
+  Same as -> except will short-circuit with nil when it encounters a nil value."
+    (if (= nil ?e)
+        val
+        (let [el (if (list? ?e) (copy ?e) (list ?e))
+              tmp (gensym)]
+          (table.insert el 2 tmp)
+          `(let [,tmp ,val]
+             (if (not= nil ,tmp)
+                 (-?> ,el ,...)
+                 ,tmp)))))
+  
+  (fn -?>>* [val ?e ...]
+    "Nil-safe thread-last macro.
+  Same as ->> except will short-circuit with nil when it encounters a nil value."
+    (if (= nil ?e)
+        val
+        (let [el (if (list? ?e) (copy ?e) (list ?e))
+              tmp (gensym)]
+          (table.insert el tmp)
+          `(let [,tmp ,val]
+             (if (not= ,tmp nil)
+                 (-?>> ,el ,...)
+                 ,tmp)))))
+  
+  (fn ?dot [tbl ...]
+    "Nil-safe table look up.
+  Same as . (dot), except will short-circuit with nil when it encounters
+  a nil value in any of subsequent keys."
+    (let [head (gensym :t)
+          lookups `(do
+                     (var ,head ,tbl)
+                     ,head)]
+      (each [_ k (ipairs [...])]
+        ;; Kinda gnarly to reassign in place like this, but it emits the best lua.
+        ;; With this impl, it emits a flat, concise, and readable set of ifs
+        (table.insert lookups (# lookups) `(if (not= nil ,head)
+                                             (set ,head (. ,head ,k)))))
+      lookups))
+  
+  (fn doto* [val ...]
+    "Evaluate val and splice it into the first argument of subsequent forms."
+    (assert (not= val nil) "missing subject")
+    (let [rebind? (or (not (sym? val))
+                      (multi-sym? val))
+          name (if rebind? (gensym)            val)
+          form (if rebind? `(let [,name ,val]) `(do))]
+      (each [_ elt (ipairs [...])]
+        (let [elt (if (list? elt) (copy elt) (list elt))]
+          (table.insert elt 2 name)
+          (table.insert form elt)))
+      (table.insert form name)
+      form))
+  
+  (fn when* [condition body1 ...]
+    "Evaluate body for side-effects only when condition is truthy."
+    (assert body1 "expected body")
+    `(if ,condition
+         (do
+           ,body1
+           ,...)))
+  
+  (fn with-open* [closable-bindings ...]
+    "Like `let`, but invokes (v:close) on each binding after evaluating the body.
+  The body is evaluated inside `xpcall` so that bound values will be closed upon
+  encountering an error before propagating it."
+    (let [bodyfn `(fn []
+                    ,...)
+          closer `(fn close-handlers# [ok# ...]
+                    (if ok# ... (error ... 0)))
+          traceback `(. (or package.loaded.fennel debug) :traceback)]
+      (for [i 1 (length closable-bindings) 2]
+        (assert (sym? (. closable-bindings i))
+                "with-open only allows symbols in bindings")
+        (table.insert closer 4 `(: ,(. closable-bindings i) :close)))
+      `(let ,closable-bindings
+         ,closer
+         (close-handlers# (_G.xpcall ,bodyfn ,traceback)))))
+  
+  (fn extract-into [iter-tbl]
+    (var (into iter-out found?) (values [] (copy iter-tbl)))
+    (for [i (length iter-tbl) 2 -1]
+      (let [item (. iter-tbl i)]
+        (if (or (= `&into item)
+                (= :into  item))
+            (do
+              (assert (not found?) "expected only one &into clause")
+              (set found? true)
+              (set into (. iter-tbl (+ i 1)))
+              (table.remove iter-out i)
+              (table.remove iter-out i)))))
+    (assert (or (not found?) (sym? into) (table? into) (list? into))
+            "expected table, function call, or symbol in &into clause")
+    (values into iter-out))
+  
+  (fn collect* [iter-tbl key-expr value-expr ...]
+    "Return a table made by running an iterator and evaluating an expression that
+  returns key-value pairs to be inserted sequentially into the table.  This can
+  be thought of as a table comprehension. The body should provide two expressions
+  (used as key and value) or nil, which causes it to be omitted.
+  
+  For example,
+    (collect [k v (pairs {:apple \"red\" :orange \"orange\"})]
+      (values v k))
+  returns
+    {:red \"apple\" :orange \"orange\"}
+  
+  Supports an &into clause after the iterator to put results in an existing table.
+  Supports early termination with an &until clause."
+    (assert (and (sequence? iter-tbl) (<= 2 (length iter-tbl)))
+            "expected iterator binding table")
+    (assert (not= nil key-expr) "expected key and value expression")
+    (assert (= nil ...)
+            "expected 1 or 2 body expressions; wrap multiple expressions with do")
+    (let [kv-expr (if (= nil value-expr) key-expr `(values ,key-expr ,value-expr))
+          (into iter) (extract-into iter-tbl)]
+      `(let [tbl# ,into]
+         (each ,iter
+           (let [(k# v#) ,kv-expr]
+             (if (and (not= k# nil) (not= v# nil))
+               (tset tbl# k# v#))))
+         tbl#)))
+  
+  (fn seq-collect [how iter-tbl value-expr ...]
+    "Common part between icollect and fcollect for producing sequential tables.
+  
+  Iteration code only differs in using the for or each keyword, the rest
+  of the generated code is identical."
+    (assert (not= nil value-expr) "expected table value expression")
+    (assert (= nil ...)
+            "expected exactly one body expression. Wrap multiple expressions in do")
+    (let [(into iter) (extract-into iter-tbl)]
+      `(let [tbl# ,into]
+         ;; believe it or not, using a var here has a pretty good performance
+         ;; boost: https://p.hagelb.org/icollect-performance.html
+         (var i# (length tbl#))
+         (,how ,iter
+               (let [val# ,value-expr]
+                 (when (not= nil val#)
+                   (set i# (+ i# 1))
+                   (tset tbl# i# val#))))
+         tbl#)))
+  
+  (fn icollect* [iter-tbl value-expr ...]
+    "Return a sequential table made by running an iterator and evaluating an
+  expression that returns values to be inserted sequentially into the table.
+  This can be thought of as a table comprehension. If the body evaluates to nil
+  that element is omitted.
+  
+  For example,
+    (icollect [_ v (ipairs [1 2 3 4 5])]
+      (when (not= v 3)
+        (* v v)))
+  returns
+    [1 4 16 25]
+  
+  Supports an &into clause after the iterator to put results in an existing table.
+  Supports early termination with an &until clause."
+    (assert (and (sequence? iter-tbl) (<= 2 (length iter-tbl)))
+            "expected iterator binding table")
+    (seq-collect 'each iter-tbl value-expr ...))
+  
+  (fn fcollect* [iter-tbl value-expr ...]
+    "Return a sequential table made by advancing a range as specified by
+  for, and evaluating an expression that returns values to be inserted
+  sequentially into the table.  This can be thought of as a range
+  comprehension. If the body evaluates to nil that element is omitted.
+  
+  For example,
+    (fcollect [i 1 10 2]
+      (when (not= i 3)
+        (* i i)))
+  returns
+    [1 25 49 81]
+  
+  Supports an &into clause after the range to put results in an existing table.
+  Supports early termination with an &until clause."
+    (assert (and (sequence? iter-tbl) (< 2 (length iter-tbl)))
+            "expected range binding table")
+    (seq-collect 'for iter-tbl value-expr ...))
+  
+  (fn accumulate-impl [for? iter-tbl body ...]
+    (assert (and (sequence? iter-tbl) (<= 4 (length iter-tbl)))
+            "expected initial value and iterator binding table")
+    (assert (not= nil body) "expected body expression")
+    (assert (= nil ...)
+            "expected exactly one body expression. Wrap multiple expressions with do")
+    (let [[accum-var accum-init] iter-tbl
+          iter (sym (if for? "for" "each"))] ; accumulate or faccumulate?
+      `(do
+         (var ,accum-var ,accum-init)
+         (,iter ,[(unpack iter-tbl 3)]
+                (set ,accum-var ,body))
+         ,(if (list? accum-var)
+            (list (sym :values) (unpack accum-var))
+            accum-var))))
+  
+  (fn accumulate* [iter-tbl body ...]
+    "Accumulation macro.
+  
+  It takes a binding table and an expression as its arguments.  In the binding
+  table, the first form starts out bound to the second value, which is an initial
+  accumulator. The rest are an iterator binding table in the format `each` takes.
+  
+  It runs through the iterator in each step of which the given expression is
+  evaluated, and the accumulator is set to the value of the expression. It
+  eventually returns the final value of the accumulator.
+  
+  For example,
+    (accumulate [total 0
+                 _ n (pairs {:apple 2 :orange 3})]
+      (+ total n))
+  returns 5"
+    (accumulate-impl false iter-tbl body ...))
+  
+  (fn faccumulate* [iter-tbl body ...]
+    "Identical to accumulate, but after the accumulator the binding table is the
+  same as `for` instead of `each`. Like collect to fcollect, will iterate over a
+  numerical range like `for` rather than an iterator."
+    (accumulate-impl true iter-tbl body ...))
+  
+  (fn double-eval-safe? [x type]
+    (or (= :number type) (= :string type) (= :boolean type)
+        (and (sym? x) (not (multi-sym? x)))))
+  
+  (fn partial* [f ...]
+    "Return a function with all arguments partially applied to f."
+    (assert f "expected a function to partially apply")
+    (let [bindings []
+          args []]
+      (each [_ arg (ipairs [...])]
+        (if (double-eval-safe? arg (type arg))
+          (table.insert args arg)
+          (let [name (gensym)]
+            (table.insert bindings name)
+            (table.insert bindings arg)
+            (table.insert args name))))
+      (let [body (list f (unpack args))]
+        (table.insert body _VARARG)
+        ;; only use the extra let if we need double-eval protection
+        (if (= 0 (length bindings))
+            `(fn [,_VARARG] ,body)
+            `(let ,bindings
+               (fn [,_VARARG] ,body))))))
+  
+  (fn pick-args* [n f]
+    "Create a function of arity n that applies its arguments to f.
+  
+  For example,
+    (pick-args 2 func)
+  expands to
+    (fn [_0_ _1_] (func _0_ _1_))"
+    (if (and _G.io _G.io.stderr)
+        (_G.io.stderr:write
+         "-- WARNING: pick-args is deprecated and will be removed in the future.\n"))
+    (assert (and (= (type n) :number) (= n (math.floor n)) (<= 0 n))
+            (.. "Expected n to be an integer literal >= 0, got " (tostring n)))
+    (let [bindings []]
+      (for [i 1 n]
+        (tset bindings i (gensym)))
+      `(fn ,bindings
+         (,f ,(unpack bindings)))))
+  
+  (fn pick-values* [n ...]
+    "Evaluate to exactly n values.
+  
+  For example,
+    (pick-values 2 ...)
+  expands to
+    (let [(_0_ _1_) ...]
+      (values _0_ _1_))"
+    (assert (and (= :number (type n)) (<= 0 n) (= n (math.floor n)))
+            (.. "Expected n to be an integer >= 0, got " (tostring n)))
+    (let [let-syms (list)
+          let-values (if (= 1 (select "#" ...)) ... `(values ,...))]
+      (for [i 1 n]
+        (table.insert let-syms (gensym)))
+      (if (= n 0) `(values)
+          `(let [,let-syms ,let-values]
+             (values ,(unpack let-syms))))))
+  
+  (fn lambda* [...]
+    "Function literal with nil-checked arguments.
+  Like `fn`, but will throw an exception if a declared argument is passed in as
+  nil, unless that argument's name begins with a question mark."
+    (let [args [...]
+          has-internal-name? (sym? (. args 1))
+          arglist (if has-internal-name? (. args 2) (. args 1))
+          docstring-position (if has-internal-name? 3 2)
+          has-docstring? (and (< docstring-position (length args))
+                              (= :string (type (. args docstring-position))))
+          arity-check-position (- 4 (if has-internal-name? 0 1)
+                                  (if has-docstring? 0 1))
+          empty-body? (< (length args) arity-check-position)]
+      (fn check! [a]
+        (if (table? a)
+            (each [_ a (pairs a)]
+              (check! a))
+            (let [as (tostring a)]
+              (and (not (as:match "^?")) (not= as "&") (not= as "_")
+                   (not= as "...") (not= as "&as")))
+            (table.insert args arity-check-position
+                          `(_G.assert (not= nil ,a)
+                                      ,(: "Missing argument %s on %s:%s" :format
+                                          (tostring a)
+                                          (or a.filename :unknown)
+                                          (or a.line "?"))))))
+  
+      (assert (= :table (type arglist)) "expected arg list")
+      (each [_ a (ipairs arglist)]
+        (check! a))
+      (if empty-body?
+          (table.insert args (sym :nil)))
+      `(fn ,(unpack args))))
+  
+  (fn macro* [name ...]
+    "Define a single macro."
+    (assert (sym? name) "expected symbol for macro name")
+    (local args [...])
+    `(macros {,(tostring name) (fn ,(unpack args))}))
+  
+  (fn macrodebug* [form return?]
+    "Print the resulting form after performing macroexpansion.
+  With a second argument, returns expanded form as a string instead of printing."
+    (let [handle (if return? `do `print)]
+      `(,handle ,(view (macroexpand form _SCOPE)))))
+  
+  (fn import-macros* [binding1 module-name1 ...]
+    "Bind a table of macros from each macro module according to a binding form.
+  Each binding form can be either a symbol or a k/v destructuring table.
+  Example:
+    (import-macros mymacros                 :my-macros    ; bind to symbol
+                   {:macro1 alias : macro2} :proj.macros) ; import by name"
+    (assert (and binding1 module-name1 (= 0 (% (select "#" ...) 2)))
+            "expected even number of binding/modulename pairs")
+    (for [i 1 (select "#" binding1 module-name1 ...) 2]
+      ;; delegate the actual loading of the macros to the require-macros
+      ;; special which already knows how to set up the compiler env and stuff.
+      ;; this is weird because require-macros is deprecated but it works.
+      (let [(binding modname) (select i binding1 module-name1 ...)
+            scope (get-scope)
+            ;; if the module-name is an expression (and not just a string) we
+            ;; patch our expression to have the correct source filename so
+            ;; require-macros can pass it down when resolving the module-name.
+            expr `(import-macros ,modname)
+            filename (if (list? modname) (. modname 1 :filename) :unknown)
+            _ (tset expr :filename filename)
+            macros* (_SPECIALS.require-macros expr scope {} binding)]
+        (if (sym? binding)
+            ;; bind whole table of macros to table bound to symbol
+            (tset scope.macros (. binding 1) macros*)
+            ;; 1-level table destructuring for importing individual macros
+            (table? binding)
+            (each [macro-name [import-key] (pairs binding)]
+              (assert (= :function (type (. macros* macro-name)))
+                      (.. "macro " macro-name " not found in module "
+                          (tostring modname)))
+              (tset scope.macros import-key (. macros* macro-name))))))
+    nil)
+  
+  {:-> ->*
+   :->> ->>*
+   :-?> -?>*
+   :-?>> -?>>*
+   :?. ?dot
+   :doto doto*
+   :when when*
+   :with-open with-open*
+   :collect collect*
+   :icollect icollect*
+   :fcollect fcollect*
+   :accumulate accumulate*
+   :faccumulate faccumulate*
+   :partial partial*
+   :lambda lambda*
+   :λ lambda*
+   :pick-args pick-args*
+   :pick-values pick-values*
+   :macro macro*
+   :macrodebug macrodebug*
+   :import-macros import-macros*}
+  ]===], {env = env, scope = compiler.scopes.compiler, useMetadata = true, filename = "src/fennel/macros.fnl", moduleName = module_name})
+  local _0
+  for k, v in pairs(built_ins) do
+    compiler.scopes.global.macros[k] = v
+  end
+  _0 = nil
+  local match_macros = eval([===[;;; Pattern matching
+  ;; This is separated out so we can use the "core" macros during the
+  ;; implementation of pattern matching.
+  
+  (fn copy [t] (collect [k v (pairs t)] k v))
+  
+  (fn with [opts k]
+    (doto (copy opts) (tset k true)))
+  
+  (fn without [opts k]
+    (doto (copy opts) (tset k nil)))
+  
+  (fn case-values [vals pattern unifications case-pattern opts]
+    (let [condition `(and)
+          bindings []]
+      (each [i pat (ipairs pattern)]
+        (let [(subcondition subbindings) (case-pattern [(. vals i)] pat
+                                                        unifications (without opts :multival?))]
+          (table.insert condition subcondition)
+          (icollect [_ b (ipairs subbindings) &into bindings] b)))
+      (values condition bindings)))
+  
+  (fn case-table [val pattern unifications case-pattern opts]
+    (let [condition `(and (= (_G.type ,val) :table))
+          bindings []]
+      (each [k pat (pairs pattern)]
+        (if (= pat `&)
+            (let [rest-pat (. pattern (+ k 1))
+                  rest-val `(select ,k ((or table.unpack _G.unpack) ,val))
+                  subcondition (case-table `(pick-values 1 ,rest-val)
+                                            rest-pat unifications case-pattern
+                                            (without opts :multival?))]
+              (if (not (sym? rest-pat))
+                  (table.insert condition subcondition))
+              (assert (= nil (. pattern (+ k 2)))
+                      "expected & rest argument before last parameter")
+              (table.insert bindings rest-pat)
+              (table.insert bindings [rest-val]))
+            (= k `&as)
+            (do
+              (table.insert bindings pat)
+              (table.insert bindings val))
+            (and (= :number (type k)) (= `&as pat))
+            (do
+              (assert (= nil (. pattern (+ k 2)))
+                      "expected &as argument before last parameter")
+              (table.insert bindings (. pattern (+ k 1)))
+              (table.insert bindings val))
+            ;; don't process the pattern right after &/&as; already got it
+            (or (not= :number (type k)) (and (not= `&as (. pattern (- k 1)))
+                                             (not= `& (. pattern (- k 1)))))
+            (let [subval `(. ,val ,k)
+                  (subcondition subbindings) (case-pattern [subval] pat
+                                                            unifications
+                                                            (without opts :multival?))]
+              (table.insert condition subcondition)
+              (icollect [_ b (ipairs subbindings) &into bindings] b))))
+      (values condition bindings)))
+  
+  (fn case-guard [vals condition guards unifications case-pattern opts]
+    (if (= 0 (length guards))
+      (case-pattern vals condition unifications opts)
+      (let [(pcondition bindings) (case-pattern vals condition unifications opts)
+            condition `(and ,(unpack guards))]
+         (values `(and ,pcondition
+                       (let ,bindings
+                         ,condition)) bindings))))
+  
+  (fn symbols-in-pattern [pattern]
+    "gives the set of symbols inside a pattern"
+    (if (list? pattern)
+        (let [result {}]
+          (each [_ child-pattern (ipairs pattern)]
+            (collect [name symbol (pairs (symbols-in-pattern child-pattern)) &into result]
+              name symbol))
+          result)
+        (sym? pattern)
+        (if (and (not= pattern `or)
+                 (not= pattern `where)
+                 (not= pattern `?)
+                 (not= pattern `nil))
+            {(tostring pattern) pattern}
+            {})
+        (= (type pattern) :table)
+        (let [result {}]
+          (each [key-pattern value-pattern (pairs pattern)]
+            (collect [name symbol (pairs (symbols-in-pattern key-pattern)) &into result]
+              name symbol)
+            (collect [name symbol (pairs (symbols-in-pattern value-pattern)) &into result]
+              name symbol))
+          result)
+        {}))
+  
+  (fn symbols-in-every-pattern [pattern-list infer-unification?]
+    "gives a list of symbols that are present in every pattern in the list"
+    (let [?symbols (accumulate [?symbols nil
+                                _ pattern (ipairs pattern-list)]
+                     (let [in-pattern (symbols-in-pattern pattern)]
+                       (if ?symbols
+                         (do
+                           (each [name symbol (pairs ?symbols)]
+                             (when (not (. in-pattern name))
+                               (tset ?symbols name nil)))
+                           ?symbols)
+                         in-pattern)))]
+      (icollect [_ symbol (pairs (or ?symbols {}))]
+        (if (not (and infer-unification?
+                      (in-scope? symbol)))
+          symbol))))
+  
+  (fn case-or [vals pattern guards unifications case-pattern opts]
+    (let [pattern [(unpack pattern 2)]
+          bindings (symbols-in-every-pattern pattern opts.infer-unification?)] ;; TODO opts.infer-unification instead of opts.unification?
+      (if (= 0 (length bindings))
+        ;; no bindings special case generates simple code
+        (let [condition
+              (icollect [i subpattern (ipairs pattern) &into `(or)]
+                (let [(subcondition subbindings) (case-pattern vals subpattern unifications opts)]
+                  subcondition))]
+          (values
+            (if (= 0 (length guards))
+              condition
+              `(and ,condition ,(unpack guards)))
+            []))
+        ;; case with bindings is handled specially, and returns three values instead of two
+        (let [matched? (gensym :matched?)
+              bindings-mangled (icollect [_ binding (ipairs bindings)]
+                                 (gensym (tostring binding)))
+              pre-bindings `(if)]
+          (each [i subpattern (ipairs pattern)]
+            (let [(subcondition subbindings) (case-guard vals subpattern guards {} case-pattern opts)]
+              (table.insert pre-bindings subcondition)
+              (table.insert pre-bindings `(let ,subbindings
+                                            (values true ,(unpack bindings))))))
+          (values matched?
+                  [`(,(unpack bindings)) `(values ,(unpack bindings-mangled))]
+                  [`(,matched? ,(unpack bindings-mangled)) pre-bindings])))))
+  
+  (fn case-pattern [vals pattern unifications opts top-level?]
+    "Take the AST of values and a single pattern and returns a condition
+  to determine if it matches as well as a list of bindings to
+  introduce for the duration of the body if it does match."
+  
+    ;; This function returns the following values (multival):
+    ;; a "condition", which is an expression that determines whether the
+    ;;   pattern should match,
+    ;; a "bindings", which bind all of the symbols used in a pattern
+    ;; an optional "pre-bindings", which is a list of bindings that happen
+    ;;   before the condition and bindings are evaluated. These should only
+    ;;   come from a (case-or). In this case there should be no recursion:
+    ;;   the call stack should be case-condition > case-pattern > case-or
+    ;;
+    ;; Here are the expected flags in the opts table:
+    ;;   :infer-unification? boolean - if the pattern should guess when to unify  (ie, match -> true, case -> false)
+    ;;   :multival? boolean - if the pattern can contain multivals  (in order to disallow patterns like [(1 2)])
+    ;;   :in-where? boolean - if the pattern is surrounded by (where)  (where opts into more pattern features)
+    ;;   :legacy-guard-allowed? boolean - if the pattern should allow `(a ? b) patterns
+  
+    ;; we have to assume we're matching against multiple values here until we
+    ;; know we're either in a multi-valued clause (in which case we know the #
+    ;; of vals) or we're not, in which case we only care about the first one.
+    (let [[val] vals]
+      (if (and (sym? pattern)
+               (or (= pattern `nil)
+                   (and opts.infer-unification?
+                        (in-scope? pattern)
+                        (not= pattern `_))
+                   (and opts.infer-unification?
+                        (multi-sym? pattern)
+                        (in-scope? (. (multi-sym? pattern) 1)))))
+          (values `(= ,val ,pattern) [])
+          ;; unify a local we've seen already
+          (and (sym? pattern) (. unifications (tostring pattern)))
+          (values `(= ,(. unifications (tostring pattern)) ,val) [])
+          ;; bind a fresh local
+          (sym? pattern)
+          (let [wildcard? (: (tostring pattern) :find "^_")]
+            (if (not wildcard?) (tset unifications (tostring pattern) val))
+            (values (if (or wildcard? (string.find (tostring pattern) "^?")) true
+                        `(not= ,(sym :nil) ,val)) [pattern val]))
+          ;; opt-in unify with (=)
+          (and (list? pattern)
+               (= (. pattern 1) `=)
+               (sym? (. pattern 2)))
+          (let [bind (. pattern 2)]
+            (assert-compile (= 2 (length pattern)) "(=) should take only one argument" pattern)
+            (assert-compile (not opts.infer-unification?) "(=) cannot be used inside of match" pattern)
+            (assert-compile opts.in-where? "(=) must be used in (where) patterns" pattern)
+            (assert-compile (and (sym? bind) (not= bind `nil) "= has to bind to a symbol" bind))
+            (values `(= ,val ,bind) []))
+          ;; where-or clause
+          (and (list? pattern) (= (. pattern 1) `where) (list? (. pattern 2)) (= (. pattern 2 1) `or))
+          (do
+            (assert-compile top-level? "can't nest (where) pattern" pattern)
+            (case-or vals (. pattern 2) [(unpack pattern 3)] unifications case-pattern (with opts :in-where?)))
+          ;; where clause
+          (and (list? pattern) (= (. pattern 1) `where))
+          (do
+            (assert-compile top-level? "can't nest (where) pattern" pattern)
+            (case-guard vals (. pattern 2) [(unpack pattern 3)] unifications case-pattern (with opts :in-where?)))
+          ;; or clause (not allowed on its own)
+          (and (list? pattern) (= (. pattern 1) `or))
+          (do
+            (assert-compile top-level? "can't nest (or) pattern" pattern)
+            ;; This assertion can be removed to make patterns more permissive
+            (assert-compile false "(or) must be used in (where) patterns" pattern)
+            (case-or vals pattern [] unifications case-pattern opts))
+          ;; guard clause
+          (and (list? pattern) (= (. pattern 2) `?))
+          (do
+            (assert-compile opts.legacy-guard-allowed? "legacy guard clause not supported in case" pattern)
+            (case-guard vals (. pattern 1) [(unpack pattern 3)] unifications case-pattern opts))
+          ;; multi-valued patterns (represented as lists)
+          (list? pattern)
+          (do
+            (assert-compile opts.multival? "can't nest multi-value destructuring" pattern)
+            (case-values vals pattern unifications case-pattern opts))
+          ;; table patterns
+          (= (type pattern) :table)
+          (case-table val pattern unifications case-pattern opts)
+          ;; literal value
+          (values `(= ,val ,pattern) []))))
+  
+  (fn add-pre-bindings [out pre-bindings]
+    "Decide when to switch from the current `if` AST to a new one"
+    (if pre-bindings
+        ;; `out` no longer needs to grow.
+        ;; Instead, a new tail `if` AST is introduced, which is where the rest of
+        ;; the clauses will get appended. This way, all future clauses have the
+        ;; pre-bindings in scope.
+        (let [tail `(if)]
+          (table.insert out true)
+          (table.insert out `(let ,pre-bindings ,tail))
+          tail)
+        ;; otherwise, keep growing the current `if` AST.
+        out))
+  
+  (fn case-condition [vals clauses match?]
+    "Construct the actual `if` AST for the given match values and clauses."
+    ;; root is the original `if` AST.
+    ;; out is the `if` AST that is currently being grown.
+    (let [root `(if)]
+      (faccumulate [out root
+                    i 1 (length clauses) 2]
+        (let [pattern (. clauses i)
+              body (. clauses (+ i 1))
+              (condition bindings pre-bindings) (case-pattern vals pattern {}
+                                                              {:multival? true
+                                                               :infer-unification? match?
+                                                               :legacy-guard-allowed? match?}
+                                                              true)
+              out (add-pre-bindings out pre-bindings)]
+          ;; grow the `if` AST by one extra condition
+          (table.insert out condition)
+          (table.insert out `(let ,bindings
+                              ,body))
+          out))
+      root))
+  
+  (fn count-case-multival [pattern]
+    "Identify the amount of multival values that a pattern requires."
+    (if (and (list? pattern) (= (. pattern 2) `?))
+        (count-case-multival (. pattern 1))
+        (and (list? pattern) (= (. pattern 1) `where))
+        (count-case-multival (. pattern 2))
+        (and (list? pattern) (= (. pattern 1) `or))
+        (accumulate [longest 0
+                     _ child-pattern (ipairs pattern)]
+          (math.max longest (count-case-multival child-pattern)))
+        (list? pattern)
+        (length pattern)
+        1))
+  
+  (fn case-val-syms [clauses]
+    "What is the length of the largest multi-valued clause? return a list of that
+  many gensyms."
+    (let [patterns (fcollect [i 1 (length clauses) 2]
+                     (. clauses i))
+          sym-count (accumulate [longest 0
+                                 _ pattern (ipairs patterns)]
+                      (math.max longest (count-case-multival pattern)))]
+      (fcollect [i 1 sym-count &into (list)]
+        (gensym))))
+  
+  (fn case-impl [match? val ...]
+    "The shared implementation of case and match."
+    (assert (not= val nil) "missing subject")
+    (assert (= 0 (math.fmod (select :# ...) 2))
+            "expected even number of pattern/body pairs")
+    (assert (not= 0 (select :# ...))
+            "expected at least one pattern/body pair")
+    (let [clauses [...]
+          vals (case-val-syms clauses)]
+      ;; protect against multiple evaluation of the value, bind against as
+      ;; many values as we ever match against in the clauses.
+      (list `let [vals val] (case-condition vals clauses match?))))
+  
+  (fn case* [val ...]
+    "Perform pattern matching on val. See reference for details.
+  
+  Syntax:
+  
+  (case data-expression
+    pattern body
+    (where pattern guards*) body
+    (or pattern patterns*) body
+    (where (or pattern patterns*) guards*) body
+    ;; legacy:
+    (pattern ? guards*) body)"
+    (case-impl false val ...))
+  
+  (fn match* [val ...]
+    "Perform pattern matching on val, automatically unifying on variables in
+  local scope. See reference for details.
+  
+  Syntax:
+  
+  (match data-expression
+    pattern body
+    (where pattern guards*) body
+    (or pattern patterns*) body
+    (where (or pattern patterns*) guards*) body
+    ;; legacy:
+    (pattern ? guards*) body)"
+    (case-impl true val ...))
+  
+  (fn case-try-step [how expr else pattern body ...]
+    (if (= nil pattern body)
+        expr
+        ;; unlike regular match, we can't know how many values the value
+        ;; might evaluate to, so we have to capture them all in ... via IIFE
+        ;; to avoid double-evaluation.
+        `((fn [...]
+            (,how ...
+              ,pattern ,(case-try-step how body else ...)
+              ,(unpack else)))
+          ,expr)))
+  
+  (fn case-try-impl [how expr pattern body ...]
+    (let [clauses [pattern body ...]
+          last (. clauses (length clauses))
+          catch (if (= `catch (and (= :table (type last)) (. last 1)))
+                   (let [[_ & e] (table.remove clauses)] e) ; remove `catch sym
+                   [`_# `...])]
+      (assert (= 0 (math.fmod (length clauses) 2))
+              "expected every pattern to have a body")
+      (assert (= 0 (math.fmod (length catch) 2))
+              "expected every catch pattern to have a body")
+      (case-try-step how expr catch (unpack clauses))))
+  
+  (fn case-try* [expr pattern body ...]
+    "Perform chained pattern matching for a sequence of steps which might fail.
+  
+  The values from the initial expression are matched against the first pattern.
+  If they match, the first body is evaluated and its values are matched against
+  the second pattern, etc.
+  
+  If there is a (catch pat1 body1 pat2 body2 ...) form at the end, any mismatch
+  from the steps will be tried against these patterns in sequence as a fallback
+  just like a normal match. If there is no catch, the mismatched values will be
+  returned as the value of the entire expression."
+    (case-try-impl `case expr pattern body ...))
+  
+  (fn match-try* [expr pattern body ...]
+    "Perform chained pattern matching for a sequence of steps which might fail.
+  
+  The values from the initial expression are matched against the first pattern.
+  If they match, the first body is evaluated and its values are matched against
+  the second pattern, etc.
+  
+  If there is a (catch pat1 body1 pat2 body2 ...) form at the end, any mismatch
+  from the steps will be tried against these patterns in sequence as a fallback
+  just like a normal match. If there is no catch, the mismatched values will be
+  returned as the value of the entire expression."
+    (case-try-impl `match expr pattern body ...))
+  
+  {:case case*
+   :case-try case-try*
+   :match match*
+   :match-try match-try*}
+  ]===], {env = env, scope = compiler.scopes.compiler, allowedGlobals = false, useMetadata = true, filename = "src/fennel/match.fnl", moduleName = module_name})
+  for k, v in pairs(match_macros) do
+    compiler.scopes.global.macros[k] = v
+  end
+  package.preload[module_name] = nil
+end
+return mod
author	icebaker <icebaker@proton.me>	2023-05-13 18:51:02 -0300
committer	icebaker <icebaker@proton.me>	2023-05-13 18:51:02 -0300
commit	1fbdb24fff7cd84b5506cb0c7092fdcdc867ec12 (patch)
tree	d5d815cae646002f4833439d07c36bf9c1f68ed7
parent	62939e4baafde86d0ef599f1c7dc07cce95b8a73 (diff)