From 9ccf3e9b22b6843892319b189fd7aed37c451420 Mon Sep 17 00:00:00 2001 From: Jeff King Date: Wed, 27 Mar 2024 04:19:22 -0400 Subject: [PATCH] config: add core.commentString The core.commentChar code recently learned to accept more than a single ASCII character. But using it is annoying with multiple versions of Git, since older ones will reject it outright: $ git.v2.44.0 -c core.commentchar=foo stripspace -s error: core.commentChar should only be one ASCII character fatal: unable to parse 'core.commentchar' from command-line config Let's add an alias core.commentString. That's arguably a better name anyway, since we now can handle strings, and it makes it possible to have a config that works reasonably with both old and new versions of Git (see the example in the documentation). This is strictly an alias, so there's not much point in adding duplicate tests; I added a single one to t0030 that exercises the alias code. Note also that the error messages for invalid values will now show the variable the config parser handed us, and thus will be normalized to lowercase (rather than camelcase). A few tests in t0030 are adjusted to match. Signed-off-by: Jeff King Signed-off-by: Junio C Hamano --- Documentation/config/core.txt | 19 ++++++++++++++++--- config.c | 7 ++++--- t/t0030-stripspace.sh | 9 +++++++-- 3 files changed, 27 insertions(+), 8 deletions(-) diff --git a/Documentation/config/core.txt b/Documentation/config/core.txt index c86b8c8408..bbe869c497 100644 --- a/Documentation/config/core.txt +++ b/Documentation/config/core.txt @@ -520,15 +520,28 @@ core.editor:: `GIT_EDITOR` is not set. See linkgit:git-var[1]. core.commentChar:: +core.commentString:: Commands such as `commit` and `tag` that let you edit messages consider a line that begins with this character commented, and removes them after the editor returns - (default '#'). Note that this option can take values larger than - a byte (whether a single multi-byte character, or you - could even go wild with a multi-character sequence). + (default '#'). + If set to "auto", `git-commit` would select a character that is not the beginning character of any line in existing commit messages. ++ +Note that these two variables are aliases of each other, and in modern +versions of Git you are free to use a string (e.g., `//` or `⁑⁕⁑`) with +`commentChar`. Versions of Git prior to v2.45.0 will ignore +`commentString` but will reject a value of `commentChar` that consists +of more than a single ASCII byte. If you plan to use your config with +older and newer versions of Git, you may want to specify both: ++ + [core] + # single character for older versions + commentChar = "#" + # string for newer versions (which will override commentChar + # because it comes later in the file) + commentString = "//" core.filesRefLockTimeout:: The length of time, in milliseconds, to retry when trying to diff --git a/config.c b/config.c index 92c752ed9f..d12e0f34f1 100644 --- a/config.c +++ b/config.c @@ -1560,18 +1560,19 @@ static int git_default_core_config(const char *var, const char *value, if (!strcmp(var, "core.editor")) return git_config_string(&editor_program, var, value); - if (!strcmp(var, "core.commentchar")) { + if (!strcmp(var, "core.commentchar") || + !strcmp(var, "core.commentstring")) { if (!value) return config_error_nonbool(var); else if (!strcasecmp(value, "auto")) auto_comment_line_char = 1; else if (value[0]) { if (strchr(value, '\n')) - return error(_("core.commentChar cannot contain newline")); + return error(_("%s cannot contain newline"), var); comment_line_str = xstrdup(value); auto_comment_line_char = 0; } else - return error(_("core.commentChar must have at least one character")); + return error(_("%s must have at least one character"), var); return 0; } diff --git a/t/t0030-stripspace.sh b/t/t0030-stripspace.sh index a161faf702..f10f42ff1e 100755 --- a/t/t0030-stripspace.sh +++ b/t/t0030-stripspace.sh @@ -401,14 +401,19 @@ test_expect_success 'strip comments with changed comment char' ' test -z "$(echo "; comment" | git -c core.commentchar=";" stripspace -s)" ' +test_expect_success 'strip comments with changed comment string' ' + test ! -z "$(echo "// comment" | git -c core.commentchar=// stripspace)" && + test -z "$(echo "// comment" | git -c core.commentchar="//" stripspace -s)" +' + test_expect_success 'newline as commentchar is forbidden' ' test_must_fail git -c core.commentChar="$LF" stripspace -s 2>err && - grep "core.commentChar cannot contain newline" err + grep "core.commentchar cannot contain newline" err ' test_expect_success 'empty commentchar is forbidden' ' test_must_fail git -c core.commentchar= stripspace -s 2>err && - grep "core.commentChar must have at least one character" err + grep "core.commentchar must have at least one character" err ' test_expect_success '-c with single line' '