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builtin/commit: refactor --trailer logic

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git-commit adds user trailers to the commit message by passing its
`--trailer` arguments to a child process running `git-interpret-trailers
--in-place`. This logic is broadly useful, not just for git-commit but
for other commands constructing message bodies (e.g. git-tag).

Let's move this logic from git-commit to a new function in the trailer
API, so that it can be re-used in other commands.

Helped-by: Patrick Steinhardt <ps@pks.im>
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: John Passaro <john.a.passaro@gmail.com>
Acked-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
John Passaro
2024-05-05 18:49:09 +00:00
committed by Junio C Hamano
parent 56740f9910
commit 4a8618785e
3 changed files with 23 additions and 8 deletions
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10
builtin/commit.c
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@@ -38,6 +38,7 @@
#include "commit-reach.h"
#include "commit-graph.h"
#include "pretty.h"
#include "trailer.h"
static const char * const builtin_commit_usage[] = {
N_("git commit [-a | --interactive | --patch] [-s] [-v] [-u<mode>] [--amend]\n"
@@ -1030,14 +1031,7 @@ static int prepare_to_commit(const char *index_file, const char *prefix,
fclose(s->fp);
if (trailer_args.nr) {
struct child_process run_trailer = CHILD_PROCESS_INIT;
strvec_pushl(&run_trailer.args, "interpret-trailers",
"--in-place", "--no-divider",
git_path_commit_editmsg(), NULL);
strvec_pushv(&run_trailer.args, trailer_args.v);
run_trailer.git_cmd = 1;
if (run_command(&run_trailer))
if (amend_file_with_trailers(git_path_commit_editmsg(), &trailer_args))
die(_("unable to pass trailers to --trailers"));
strvec_clear(&trailer_args);
}