From 7243ffdd78d56738e568abb544eba00e8079f329 Mon Sep 17 00:00:00 2001 From: Jeff King Date: Mon, 26 Sep 2016 07:59:15 -0400 Subject: [PATCH] get_sha1: avoid repeating ourselves via ONLY_TO_DIE When the revision code cannot parse an argument like "HEAD:foo", it will call maybe_die_on_misspelt_object_name(), which re-runs get_sha1() with an extra ONLY_TO_DIE flag. We then spend more effort to generate a better error message. Unfortunately, a side effect is that our second call may repeat the same error messages from the original get_sha1() call. You can see this with: $ git show 0017 error: short SHA1 0017 is ambiguous. error: short SHA1 0017 is ambiguous. fatal: ambiguous argument '0017': unknown revision or path not in the working tree. Use '--' to separate paths from revisions, like this: 'git [...] -- [...]' where the second "error:" line comes from the ONLY_TO_DIE call. To fix this, we can make ONLY_TO_DIE imply QUIETLY. This is a little odd, because the whole point of ONLY_TO_DIE is to output error messages. But what we want to do is tell the rest of the get_sha1() code (particularly get_sha1_1()) that the _regular_ messages should be quiet, but the only-to-die ones should not. Signed-off-by: Jeff King Signed-off-by: Junio C Hamano --- sha1_name.c | 3 +++ t/t1512-rev-parse-disambiguation.sh | 6 ++++++ 2 files changed, 9 insertions(+) diff --git a/sha1_name.c b/sha1_name.c index 0ff83a9985..e7e3a38728 100644 --- a/sha1_name.c +++ b/sha1_name.c @@ -1386,6 +1386,9 @@ static int get_sha1_with_context_1(const char *name, const char *cp; int only_to_die = flags & GET_SHA1_ONLY_TO_DIE; + if (only_to_die) + flags |= GET_SHA1_QUIETLY; + memset(oc, 0, sizeof(*oc)); oc->mode = S_IFINVALID; ret = get_sha1_1(name, namelen, sha1, flags); diff --git a/t/t1512-rev-parse-disambiguation.sh b/t/t1512-rev-parse-disambiguation.sh index e221167cfb..16f970982b 100755 --- a/t/t1512-rev-parse-disambiguation.sh +++ b/t/t1512-rev-parse-disambiguation.sh @@ -291,4 +291,10 @@ test_expect_success 'ambiguous short sha1 ref' ' grep "refname.*${REF}.*ambiguous" err ' +test_expect_success C_LOCALE_OUTPUT 'ambiguity errors are not repeated' ' + test_must_fail git rev-parse 00000 2>stderr && + grep "is ambiguous" stderr >errors && + test_line_count = 1 errors +' + test_done