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-*- mode: lisp-data -*-

text-mode :when (and (fboundp 'git-commit-mode) (git-commit-mode))

(add\ 
 "gnu: Add "
 (p
  (with-temp-buffer
    (magit-git-wash #'magit-diff-wash-diffs
      "diff" "--staged")
    (goto-char (point-min))
    (when (re-search-forward "\\+(define-public \\(\\S-+\\)" nil 'noerror)
      (match-string-no-properties 1)))
  var ) "." n n
 "* " (car (magit-staged-files)) " (" (s var ) "): New variable.")

(remove\ 
 "gnu: Remove "
 (p (with-temp-buffer
      (magit-git-wash #'magit-diff-wash-diffs
        "diff" "--staged")
      (goto-char (point-min))
      (when (re-search-forward "\\-(define-public \\(\\S-+\\)" nil 'noerror)
        (match-string-no-properties 1)))
    var) "." n n
 "* " (car (magit-staged-files)) " (" (s var) "): Delete variable.")

(rename\ 
 "gnu: "
 (p (with-temp-buffer
      (magit-git-wash #'magit-diff-wash-diffs
        "diff" "--staged")
      (beginning-of-buffer)
      (when (search-forward "-(define-public " nil 'noerror)
        (thing-at-point 'sexp 'no-properties)))
    prev-var)
 ": Rename package to "
 (p (with-temp-buffer
      (magit-git-wash #'magit-diff-wash-diffs
        "diff" "--staged")
      (beginning-of-buffer)
      (when (search-forward "+(define-public " nil 'noerror)
        (thing-at-point 'sexp 'no-properties)))
    new-var) "." n n
 "* " (car (magit-staged-files)) " (" (s prev-var) "): Define in terms of" n
 "'deprecated-package'." n
 "(" (s new-var) "): New variable, formerly known as \"" (s prev-var) "\".")

(update\ 
 "gnu: "
 (p (with-temp-buffer
      (magit-git-wash #'magit-diff-wash-diffs
        "diff" "--staged")
      (goto-char (point-min))
      (when (re-search-forward "^[ ]*(define-public \\(\\S-+\\)" nil 'noerror)
        (match-string-no-properties 1)))
    var)
 ": Update to "
 (p (with-temp-buffer
      (magit-git-wash #'magit-diff-wash-diffs
        "diff" "--staged")
      (goto-char (point-min))
      (search-forward "name" nil 'noerror)
      (search-forward "+" nil 'noerror)   ; first change
      (when (and (search-forward "version " nil 'noerror)
                 (looking-at-p "\""))
        (let ((end (save-excursion (search-forward "\")" nil 'noerror))))
          (when end
            (forward-char)
            (buffer-substring-no-properties (point) (- end 2))))))
    version) "." n n
 "* " (car (magit-staged-files)) " (" (s var) "): Update to " (s version) "."
 (mapconcat (lambda (file) (concat "* " file)) (cdr (magit-staged-files))) n)

(addcl\ 
 "gnu: Add cl-"
 (p (replace-regexp-in-string
     "^cl-" "" (with-temp-buffer
                 (magit-git-wash #'magit-diff-wash-diffs
                   "diff" "--staged")
                 (beginning-of-buffer)
                 (when (search-forward "+(define-public " nil 'noerror)
                   (replace-regexp-in-string
                    "^sbcl-" ""
                    (thing-at-point 'sexp 'no-properties)))))
    var) "." n n
 "* " (car (magit-staged-files))
 " (cl-" (s var)  ", ecl-" (s var) ", sbcl-" (s var) "): New variables.")

(https\ 
 "gnu: "
 (p (with-temp-buffer
      (magit-git-wash #'magit-diff-wash-diffs
        "diff" "--staged")
      (goto-char (point-min))
      (when (re-search-forward "^[ ]*(define-public \\(\\S-+\\)" nil 'noerror)
        (match-string-no-properties 1)))
    var)
 ": Use HTTPS home page." n n
 "* " (car (magit-staged-files)) " (" (s var) ")[home-page]: Use HTTPS." n
 (mapconcat (lambda (file) (concat "* " file)) (cdr (magit-staged-files))) n)

(move\ 
 "gnu: "
 (p (with-temp-buffer
      (magit-git-wash #'magit-diff-wash-diffs
        "diff" "--staged")
      (goto-char (point-min))
      (when (re-search-forward "\\-(define-public \\(\\S-+\\)" nil 'noerror)
        (match-string-no-properties 1)))
    var)
 ": Move to "
 (concat "("
         (string-replace "\.scm" ""
                         (string-replace "/" " " (car (magit-staged-files))))
         ").") n
 n "* " (car (magit-staged-files)) " (" (s var) "): Move from here…"
 n "* " (cadr (magit-staged-files)) " (" (s var) "): …to here.")