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2022-09-02	read-print: Improve declaration of integer bases.	Ludovic Courtès
	This is a followup to c3b1cfe76b7038f4030d7d207ffc417fed9a7ead. * guix/read-print.scm (%symbols-followed-by-octal-integers) (%symbols-followed-by-hexadecimal-integers): Remove. * guix/read-print.scm (%integer-forms): New variable. (integer->string)[form-base, octal?]: New procedures. Rewrite accordingly.
2022-09-02	read-print: Define forms for which \n, \t, etc. are not escaped.	Ludovic Courtès
	Previously, the pretty-printer would unconditionally leave everything but double-quotes and backslashes unescaped when rendering a string. With this change, the previous behavior only applies to forms listed in %NATURAL-WHITESPACE-STRING-FORMS. * guix/read-print.scm (%natural-whitespace-string-forms): New variable. (printed-string): New procedure. (pretty-print-with-comments): Use it instead of 'escaped-string'. * tests/read-print.scm: Add test.
2022-09-01	read-print: Guess the base to use for integers being printed.	Ludovic Courtès
	Fixes <https://issues.guix.gnu.org/57090>. Reported by Christopher Rodriguez <yewscion@gmail.com>. * guix/read-print.scm (%symbols-followed-by-octal-integers) (%symbols-followed-by-hexadecimal-integers): New variables. * guix/read-print.scm (integer->string): New procedure. (pretty-print-with-comments): Use it. * tests/read-print.scm: Add test.
2022-08-10	read-print: Remove unused procedure.	Ludovic Courtès
	* guix/read-print.scm (combine-vertical-space): Remove.
2022-08-10	read-print: Report missing closing parens instead of looping.	Ludovic Courtès
	Fixes <https://issues.guix.gnu.org/57093>. Reported by Mohammed AMAR-BENSABER <renken@shione.net>. Previously 'read-with-comments' would enter an infinite loop. * guix/read-print.scm (read-with-comments)[missing-closing-paren-error]: New procedure. Call it when 'loop' as called from 'liip' returns EOF. * tests/read-print.scm ("read-with-comments: missing closing paren"): New test.
2022-08-08	read-print: Add 'case' and 'cond' special forms.	Ludovic Courtès
	* guix/read-print.scm (%special-forms): Add 'case' and 'cond'. * tests/read-print.scm: Add tests.
2022-08-08	read-print: Support printing multi-line comments.	Ludovic Courtès
	* guix/read-print.scm (%not-newline): New variable. (print-multi-line-comment): New procedure. (pretty-print-with-comments): Use it. * tests/read-print.scm ("pretty-print-with-comments, multi-line comment"): New test.
2022-08-08	read-print: 'canonicalize-comment' leaves top-level comments unchanged.	Ludovic Courtès
	This lets users use three leading semicolons, for instance, in top-level comments. * guix/read-print.scm (canonicalize-comment): Add INDENT parameter and honor it. (pretty-print-with-comments): Change default value of #:format-comment. Call FORMAT-COMMENT with INDENT as the second argument. * tests/read-print.scm: Adjust test accordingly.
2022-08-08	read-print: Add code to read and write sequences of expressions/blanks.	Ludovic Courtès
	* guix/read-print.scm (read-with-comments): Add #:blank-line? and honor it. (read-with-comments/sequence, pretty-print-with-comments/splice): New procedures. * tests/read-print.scm (test-pretty-print/sequence): New macro. Add tests using it.
2022-08-08	read-print: Recognize page breaks.	Ludovic Courtès
	* guix/read-print.scm (<page-break>, page-break?, page-break) (char-set:whitespace-sans-page-break): New variables. (space?): New procedure. (read-vertical-space): Use it. (read-until-end-of-line): New procedure. (read-with-comments): Add #\page case. (pretty-print-with-comments): Add 'page-break?' case. * tests/read-print.scm ("read-with-comments: top-level page break"): New test. Add round-trip test with page break within an sexp.
2022-08-08	read-print: Read and render vertical space.	Ludovic Courtès
	* guix/read-print.scm (<vertical-space>, vertical-space?) (vertical-space, vertical-space-height): New variables. (combine-vertical-space, canonicalize-vertical-space) (read-vertical-space): New procedures. (read-with-comments): Use it in the #\newline case. (pretty-print-with-comments): Add #:format-vertical-space and honor it. Add case for 'vertical-space?'. * guix/scripts/style.scm (format-package-definition): Pass #:format-vertical-space to 'object->string'. tests/read-print.scm ("read-with-comments: list with blank line") ("read-with-comments: list with multiple blank lines") ("read-with-comments: top-level blank lines") ("pretty-print-with-comments, canonicalize-vertical-space"): New tests. Add a couple of additional round-trip tests.
2022-08-08	read-print: Introduce <blank> parent class of <comment>.	Ludovic Courtès
	* guix/read-print.scm (<blank>, blank?): New record type. (<comment>): Redefine using the record interface. (read-with-comments, pretty-print-with-comments): Change some uses of 'comment?' to 'blank?'. * guix/scripts/style.scm (simplify-inputs)[simplify-expressions]: Use 'blank?' instead of 'comment?'.
2022-08-08	read-print: Expose comment constructor.	Ludovic Courtès
	* guix/read-print.scm (<comment>): Rename constructor to 'string->comment'. (comment): New procedure. (read-with-comments, canonicalize-comment): Use 'string->comment' instead of 'comment'.
2022-08-08	read-print: Add System and Home special forms.	Ludovic Courtès
	* guix/read-print.scm (%special-forms): Add System and Home forms. (%newline-forms): Add 'services'.
2022-08-08	style: Move reader and printer to (guix read-print).	Ludovic Courtès
	* guix/scripts/style.scm (<comment>, read-with-comments) (vhashq, %special-forms, %newline-forms, prefix?) (special-form-lead, newline-form?, escaped-string) (string-width, canonicalize-comment, pretty-print-with-comments) (object->string): Move to... guix/read-print.scm: ... here. New file. * guix/scripts/import.scm: Adjust accordingly. * tests/style.scm: Move 'test-pretty-print' and tests to... * tests/read-print.scm: ... here. New file. * Makefile.am (MODULES): Add 'guix/read-print.scm'. (SCM_TESTS): Add 'tests/read-print.scm'.