From 67bfc030d7b27c007853776e8028598bdfa2cae0 Mon Sep 17 00:00:00 2001 From: Junio C Hamano Date: Mon, 2 Jun 2008 22:17:42 -0700 Subject: commit: drop duplicated parents The scripted version of git-commit internally used git-commit-tree which omitted duplicated parents given from the command line. This prevented a nonsensical octopus merge from getting created even when you said "git merge A B" while you are already on branch A. However, when git-commit was rewritten in C, this sanity check was lost. This resurrects it. Signed-off-by: Junio C Hamano --- builtin-commit.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'builtin-commit.c') diff --git a/builtin-commit.c b/builtin-commit.c index b294c1f88..90200ed64 100644 --- a/builtin-commit.c +++ b/builtin-commit.c @@ -883,10 +883,19 @@ static void add_parent(struct strbuf *sb, const unsigned char *sha1) { struct object *obj = parse_object(sha1); const char *parent = sha1_to_hex(sha1); + const char *cp; + if (!obj) die("Unable to find commit parent %s", parent); if (obj->type != OBJ_COMMIT) die("Parent %s isn't a proper commit", parent); + + for (cp = sb->buf; cp && (cp = strstr(cp, "\nparent ")); cp += 8) { + if (!memcmp(cp + 8, parent, 40) && cp[48] == '\n') { + error("duplicate parent %s ignored", parent); + return; + } + } strbuf_addf(sb, "parent %s\n", parent); } -- cgit v1.2.1