From ce48fb2eabccc269443f33d0f148d0061b94a101 Mon Sep 17 00:00:00 2001 From: Junio C Hamano Date: Tue, 23 Apr 2024 10:52:33 -0700 Subject: [PATCH 1/2] format-patch: allow --rfc to optionally take a value, like --rfc=WIP With the "--rfc" option, we can tweak the "[PATCH]" (or whatever string specified with the "--subject-prefix" option, instead of "PATCH") that we prefix the title of the commit with into "[RFC PATCH]", but some projects may want "[rfc PATCH]". Adding a new option, e.g., "--rfc-lowercase", to support such need every time somebody wants to use different strings would lead to insanity of accumulating unbounded number of such options. Allow an optional value specified for the option, so that users can use "--rfc=rfc" (think of "--rfc" without value as a short-hand for "--rfc=RFC") if they wanted to. This can of course be (ab)used to make the prefix "[WIP PATCH]" by passing "--rfc=WIP". Passing an empty string, i.e., "--rfc=", is the same as "--no-rfc" to override an option given earlier on the same command line. Signed-off-by: Junio C Hamano --- Documentation/git-format-patch.txt | 15 ++++++++++----- builtin/log.c | 23 +++++++++++++++++++---- t/t4014-format-patch.sh | 21 +++++++++++++++++++-- 3 files changed, 48 insertions(+), 11 deletions(-) diff --git a/Documentation/git-format-patch.txt b/Documentation/git-format-patch.txt index 728bb3821c..e553810b1e 100644 --- a/Documentation/git-format-patch.txt +++ b/Documentation/git-format-patch.txt @@ -20,7 +20,7 @@ SYNOPSIS [--in-reply-to=] [--suffix=.] [--ignore-if-in-upstream] [--always] [--cover-from-description=] - [--rfc] [--subject-prefix=] + [--rfc[=]] [--subject-prefix=] [(--reroll-count|-v) ] [--to=] [--cc=] [--[no-]cover-letter] [--quiet] @@ -238,10 +238,15 @@ the patches (with a value of e.g. "PATCH my-project"). value of the `format.filenameMaxLength` configuration variable, or 64 if unconfigured. ---rfc:: - Prepends "RFC" to the subject prefix (producing "RFC PATCH" by - default). RFC means "Request For Comments"; use this when sending - an experimental patch for discussion rather than application. +--rfc[=]:: + Prepends the string __ (defaults to "RFC") to + the subject prefix. As the subject prefix defaults to + "PATCH", you'll get "RFC PATCH" by default. ++ +RFC means "Request For Comments"; use this when sending +an experimental patch for discussion rather than application. +"--rfc=WIP" may also be a useful way to indicate that a patch +is not complete yet ("WIP" stands for "Work In Progress"). -v :: --reroll-count=:: diff --git a/builtin/log.c b/builtin/log.c index c0a8bb95e9..97ca885b33 100644 --- a/builtin/log.c +++ b/builtin/log.c @@ -1494,6 +1494,19 @@ static int subject_prefix_callback(const struct option *opt, const char *arg, return 0; } +static int rfc_callback(const struct option *opt, const char *arg, + int unset) +{ + const char **rfc = opt->value; + + *rfc = opt->value; + if (unset) + *rfc = NULL; + else + *rfc = arg ? arg : "RFC"; + return 0; +} + static int numbered_cmdline_opt = 0; static int numbered_callback(const struct option *opt, const char *arg, @@ -1907,8 +1920,8 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix) struct strbuf rdiff2 = STRBUF_INIT; struct strbuf rdiff_title = STRBUF_INIT; struct strbuf sprefix = STRBUF_INIT; + const char *rfc = NULL; int creation_factor = -1; - int rfc = 0; const struct option builtin_format_patch_options[] = { OPT_CALLBACK_F('n', "numbered", &numbered, NULL, @@ -1932,7 +1945,9 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix) N_("mark the series as Nth re-roll")), OPT_INTEGER(0, "filename-max-length", &fmt_patch_name_max, N_("max length of output filename")), - OPT_BOOL(0, "rfc", &rfc, N_("use [RFC PATCH] instead of [PATCH]")), + OPT_CALLBACK_F(0, "rfc", &rfc, N_("rfc"), + N_("add (default 'RFC') before 'PATCH'"), + PARSE_OPT_OPTARG, rfc_callback), OPT_STRING(0, "cover-from-description", &cover_from_description_arg, N_("cover-from-description-mode"), N_("generate parts of a cover letter based on a branch's description")), @@ -2050,8 +2065,8 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix) if (cover_from_description_arg) cover_from_description_mode = parse_cover_from_description(cover_from_description_arg); - if (rfc) - strbuf_insertstr(&sprefix, 0, "RFC "); + if (rfc && rfc[0]) + strbuf_insertf(&sprefix, 0, "%s ", rfc); if (reroll_count) { strbuf_addf(&sprefix, " v%s", reroll_count); diff --git a/t/t4014-format-patch.sh b/t/t4014-format-patch.sh index e37a1411ee..645c4189f9 100755 --- a/t/t4014-format-patch.sh +++ b/t/t4014-format-patch.sh @@ -1368,13 +1368,30 @@ test_expect_success 'empty subject prefix does not have extra space' ' test_cmp expect actual ' -test_expect_success '--rfc' ' +test_expect_success '--rfc and --no-rfc' ' cat >expect <<-\EOF && Subject: [RFC PATCH 1/1] header with . in it EOF git format-patch -n -1 --stdout --rfc >patch && grep "^Subject:" patch >actual && - test_cmp expect actual + test_cmp expect actual && + git format-patch -n -1 --stdout --rfc --no-rfc >patch && + sed -e "s/RFC //" expect >expect-raw && + grep "^Subject:" patch >actual && + test_cmp expect-raw actual +' + +test_expect_success '--rfc=WIP and --rfc=' ' + cat >expect <<-\EOF && + Subject: [WIP PATCH 1/1] header with . in it + EOF + git format-patch -n -1 --stdout --rfc=WIP >patch && + grep "^Subject:" patch >actual && + test_cmp expect actual && + git format-patch -n -1 --stdout --rfc --rfc= >patch && + sed -e "s/WIP //" expect >expect-raw && + grep "^Subject:" patch >actual && + test_cmp expect-raw actual ' test_expect_success '--rfc does not overwrite prefix' ' From ce36894509bac4c03fd524fc668b1e43d6e56ee1 Mon Sep 17 00:00:00 2001 From: Junio C Hamano Date: Tue, 23 Apr 2024 10:52:34 -0700 Subject: [PATCH 2/2] format-patch: "--rfc=-(WIP)" appends to produce [PATCH (WIP)] In the previous step, the "--rfc" option of "format-patch" learned to take an optional string value to prepend to the subject prefix, so that --rfc=WIP can give "[WIP PATCH]". There may be cases in which the extra string wants to come after the subject prefix. Extend the mechanism to allow "--rfc=-(WIP)" [*] to signal that the extra string is to be appended instead of getting prepended, resulting in "[PATCH (WIP)]". In the documentation, discourage (ab)using "--rfc=-RFC" to say "[PATCH RFC]" just to be different, when "[RFC PATCH]" is the norm. [Footnote] * The syntax takes inspiration from Perl's open syntax that opens pipes "open fh, '|-', 'cmd'", where the dash signals "the other stuff comes here". Signed-off-by: Junio C Hamano --- Documentation/git-format-patch.txt | 6 ++++++ builtin/log.c | 8 ++++++-- t/t4014-format-patch.sh | 9 +++++++++ 3 files changed, 21 insertions(+), 2 deletions(-) diff --git a/Documentation/git-format-patch.txt b/Documentation/git-format-patch.txt index e553810b1e..369af2c4a7 100644 --- a/Documentation/git-format-patch.txt +++ b/Documentation/git-format-patch.txt @@ -247,6 +247,12 @@ RFC means "Request For Comments"; use this when sending an experimental patch for discussion rather than application. "--rfc=WIP" may also be a useful way to indicate that a patch is not complete yet ("WIP" stands for "Work In Progress"). ++ +If the convention of the receiving community for a particular extra +string is to have it _after_ the subject prefix, the string __ +can be prefixed with a dash ("`-`") to signal that the the rest of +the __ string should be appended to the subject prefix instead, +e.g., `--rfc='-(WIP)'` results in "PATCH (WIP)". -v :: --reroll-count=:: diff --git a/builtin/log.c b/builtin/log.c index 97ca885b33..4750e480e6 100644 --- a/builtin/log.c +++ b/builtin/log.c @@ -2065,8 +2065,12 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix) if (cover_from_description_arg) cover_from_description_mode = parse_cover_from_description(cover_from_description_arg); - if (rfc && rfc[0]) - strbuf_insertf(&sprefix, 0, "%s ", rfc); + if (rfc && rfc[0]) { + if (rfc[0] == '-') + strbuf_addf(&sprefix, " %s", rfc + 1); + else + strbuf_insertf(&sprefix, 0, "%s ", rfc); + } if (reroll_count) { strbuf_addf(&sprefix, " v%s", reroll_count); diff --git a/t/t4014-format-patch.sh b/t/t4014-format-patch.sh index 645c4189f9..fcbde15b16 100755 --- a/t/t4014-format-patch.sh +++ b/t/t4014-format-patch.sh @@ -1394,6 +1394,15 @@ test_expect_success '--rfc=WIP and --rfc=' ' test_cmp expect-raw actual ' +test_expect_success '--rfc=-(WIP) appends' ' + cat >expect <<-\EOF && + Subject: [PATCH (WIP) 1/1] header with . in it + EOF + git format-patch -n -1 --stdout --rfc="-(WIP)" >patch && + grep "^Subject:" patch >actual && + test_cmp expect actual +' + test_expect_success '--rfc does not overwrite prefix' ' cat >expect <<-\EOF && Subject: [RFC PATCH foobar 1/1] header with . in it