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shortlog: make trailer insertion a noop when appropriate

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When there are no trailers to insert, it is natural that
insert_records_from_trailers() should return without having done any
work.

But instead we guard this call unnecessarily by first checking whether
`log->groups` has the `SHORTLOG_GROUP_TRAILER` bit set.

Prepare to match a similar pattern in the future where a function which
inserts records of a certain type does no work when no specifiers
matching that type are given.

Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Taylor Blau 2022-10-24 14:55:33 -04:00 committed by Junio C Hamano
parent 251554c269
commit 0b293df964
1 changed files with 4 additions and 3 deletions
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7
builtin/shortlog.c
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@ -170,6 +170,9 @@ static void insert_records_from_trailers(struct shortlog *log,
const char *commit_buffer, *body;
struct strbuf ident = STRBUF_INIT;
if (!log->trailers.nr)
return;
/*
* Using format_commit_message("%B") would be simpler here, but
* this saves us copying the message.
@ -240,9 +243,7 @@ void shortlog_add_commit(struct shortlog *log, struct commit *commit)
strset_add(&dups, ident.buf))
insert_one_record(log, ident.buf, oneline_str);
}
if (log->groups & SHORTLOG_GROUP_TRAILER) {
insert_records_from_trailers(log, &dups, commit, &ctx, oneline_str);
}
insert_records_from_trailers(log, &dups, commit, &ctx, oneline_str);
strset_clear(&dups);
strbuf_release(&ident);