* gash/arithmetic.scm: New file.
* Makefile.am (SOURCES): Add it.
* gash/lexer.scm (get-arithmetic-expansion): New procedure.
(get-expansion): Check for "$((" and use the new procedure to read an
arithmetic expansion.
* gash/eval.scm (word->qword): Handle '<sh-arithmetic>'.
* tests/unit/eval.scm: Add tests.
* tests/spec/Makefile.am (TESTS): Add 'arith'.
* tests/spec/oil.scm: Patch seven of its tests and filter out fifteen
others.
* doc/gash.texi, doc/syntax.txt: Add '<sh-arithmetic>' syntax.
This adjustment paves the way for writing a compiler.
* gash/word.scm (eval-cmd-sub, string-not-null?, word->qword,
expand-word): Move these...
* gash/eval.scm: ...to this module.
* tests/unit/word.scm: Adjust qword tests to use 'expand-qword', and
move non-qword (evaluation) tests to...
* tests/unit/eval.scm: ...this new file, adjusting them to use
'eval-word'.
* Makefile.am (UNIT_TESTS): Add the new file.
* doc/gash.texi (Internal representation examples): In the section
on pipelines, change a redirect in the result to "ice-cream.txt" to
match its input.
* Makefile.am (AM_TESTS_ENVIRONMENT): New variable.
* tests/redirects.org (Files opened for redirect can be executed
immediately): Use an environment variable instead of hard-coding
'/bin/sh'.
This broke when we started building the 'version.texi' file
reproducibly (cf. 6f598de23a).
* guix.scm: Make sure 'make-select' includes the '.git' directory;
add 'git-minimal' to the main package's 'native-inputs'.
* Makefile.am (dist-hook, gen-ChangeLog): Test for mere existence of
.git instead of asserting a directory.
Co-authored-by: Timothy Sample <samplet@ngyro.com>
* build-aux/gitlog-to-changelog-repro.patch: New file.
* Makefile.am (EXTRA_DIST): Add it.
(build-aux/gitlog-to-changelog-repro): New rule.
(gen-ChangeLog): Use 'gitlog-to-changelog-repro'.
(DISTCLEANFILES): Add 'build-aux/gitlog-to-changelog-repro'.
* gash/shell.scm (swap-and-shift-pairs): Remove procedure.
(make-pipes): Remove procedure.
(plumb): Accept another port as an argument and close it when setting
up the child process.
(sh:pipeline): Do not use 'make-pipes' to create all the pipe ports
upfront, but rather create them as needed and give them directly to
'plumb'.
* gash/shell.scm (redir->parameter+port): Rename this...
(process-redirect): ...to this, and make it return a list with the
third element being a boolean indicating if the port was opened by us.
(sh:with-redirects): Close ports when the new boolean is set.
The old implementation had several bugs, prompting this complete
rewrite.
* gash/compat/srfi-43.scm (vector-empty?): New procedure.
* gash/pattern.scm (pattern-null?): New procedure.
* gash/word.scm (qword->pattern-string): New procedure.
(qword->pattern): Rewrite using 'qword->pattern-string'.
(find-files): New procedure.
(expand-pathnames): Rewrite using 'find-files' and add a docstring.
* tests/unit/word.scm: Add tests.
(mock): New syntax.
(make-pure-scandir): New procedure.
(with-mocked-files): New syntax.
* gash/pattern.scm (<pattern>): Remove the 'start-anchored?' and
'end-anchored?' fields.
(parse-pattern): Replace the fields with empty parts at the start or
end of the parts list.
(pattern-plain?): Instead of checking the fields, just check the
number of parts.
(pattern-match?, pattern-drop, pattern-drop-right): Do not worry about
the fields, because the empty parts ensure the right thing happens.
These were mixed up, with ':+' behaving like '+' and vice versa.
* gash/word.scm (word->qword): Swap implementations of '<sh-ref-and>'
and '<sh-ref-and*>'.
* tests/unit/word.scm: Swap tests.
* gash/lexer.scm (read-backquoted-command): Make the default procedure
accept a 'quoted?' keyword.
(get-backquoted-command): Accept a 'quoted?' keyword and pass it on to
'read-backquoted-command'.
(get-expansion): Accept a 'quoted?' keyword and pass it on to
'get-backquoted-command'.
(get-double-quotation): Set the 'quoted?' keyword when calling
'get-expansion'.
* tests/unit/lexer.scm: Add tests.
* gash/parser.scm (call-with-backquoted-input-port): Accept a
'quoted?' keyword which, if set, adds the double quote character to
the set of escapable characters.
(read-sh/backquoted): Accept a 'quoted?' keyword and pass it on to
'call-with-backquoted-input-port'.
* tests/unit/parser.scm: Add tests.
Timothy Sample
Stephen J. Scheck
Jan Nieuwenhuizen