commit: search author pattern against mailmap

"git commit --author=$name" sets the author to one whose name
matches the given string from existing commits, when $name is not in
the "Name <e-mail>" format. However, it does not honor the mailmap
to use the canonical name for the author found this way.

Fix it by telling the logic to find a matching existing author to
honor the mailmap, and use the name and email after applying the
mailmap.

Signed-off-by: Antoine Pelisse <apelisse@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/commit.c b/builtin/commit.c
index 10acc53f8012f53b6a15a3d006b622bda3409b17..a48a7fe59c9abf32ce0ecc5e4ca5126761fc5a75 100644 (file)
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -30,6 +30,7 @@
 #include "column.h"
 #include "sequencer.h"
 #include "notes-utils.h"
+#include "mailmap.h"
 
 static const char * const builtin_commit_usage[] = {
        N_("git commit [options] [--] <pathspec>..."),
@@ -935,6 +936,7 @@ static const char *find_author_by_nickname(const char *name)
        struct rev_info revs;
        struct commit *commit;
        struct strbuf buf = STRBUF_INIT;
+       struct string_list mailmap = STRING_LIST_INIT_NODUP;
        const char *av[20];
        int ac = 0;
 
@@ -945,13 +947,17 @@ static const char *find_author_by_nickname(const char *name)
        av[++ac] = buf.buf;
        av[++ac] = NULL;
        setup_revisions(ac, av, &revs, NULL);
+       revs.mailmap = &mailmap;
+       read_mailmap(revs.mailmap, NULL);
+
        prepare_revision_walk(&revs);
        commit = get_revision(&revs);
        if (commit) {
                struct pretty_print_context ctx = {0};
                ctx.date_mode = DATE_NORMAL;
                strbuf_release(&buf);
-               format_commit_message(commit, "%an <%ae>", &buf, &ctx);
+               format_commit_message(commit, "%aN <%aE>", &buf, &ctx);
+               clear_mailmap(&mailmap);
                return strbuf_detach(&buf, NULL);
        }
        die(_("No existing author found with '%s'"), name);

diff --git a/t/t4203-mailmap.sh b/t/t4203-mailmap.sh
index baa4685dcce59f17223161706a8cf059ecdabcd1..4d715f058c5fba2741eda4e193f096570647f63c 100755 (executable)
--- a/t/t4203-mailmap.sh
+++ b/t/t4203-mailmap.sh
@@ -470,4 +470,15 @@ test_expect_success 'Blame output (complex mapping)' '
        test_cmp expect actual.fuzz
 '
 
+cat >expect <<\EOF
+Some Dude <some@dude.xx>
+EOF
+
+test_expect_success 'commit --author honors mailmap' '
+       test_must_fail git commit --author "nick" --allow-empty -meight &&
+       git commit --author "Some Dude" --allow-empty -meight &&
+       git show --pretty=format:"%an <%ae>%n" >actual &&
+       test_cmp expect actual
+'
+
 test_done