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authorJeff King <peff@peff.net>2013-12-06 17:05:48 -0500
committerJunio C Hamano <gitster@pobox.com>2013-12-09 11:01:23 -0800
commit141856738152d02beac5d4270a310a6007597282 (patch)
tree138e775504613d7a88319076095bfa428427af56
parenta155a5f075cdc09e584a58d68bdce0c80e6c4b5a (diff)
downloadgit-141856738152d02beac5d4270a310a6007597282.tar.gz
git-141856738152d02beac5d4270a310a6007597282.tar.xz
rev-parse: correctly diagnose revision errors before "--"
Rev-parse understands that a "--" may separate revisions and filenames, and that anything after the "--" is taken as-is. However, it does not understand that anything before the token must be a revision (which is the usual rule implemented by the setup_revisions parser). Since rev-parse prefers revisions to files when parsing before the "--", we end up with the correct result (if such an argument is a revision, we parse it as one, and if it is not, it is an error either way). However, we misdiagnose the errors: $ git rev-parse foobar -- >/dev/null fatal: ambiguous argument 'foobar': unknown revision or path not in the working tree. Use '--' to separate paths from revisions, like this: 'git <command> [<revision>...] -- [<file>...]' $ >foobar $ git rev-parse foobar -- >/dev/null fatal: bad flag '--' used after filename In both cases, we should know that the real error is that "foobar" is meant to be a revision, but could not be resolved. Signed-off-by: Jeff King <peff@peff.net> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
-rw-r--r--builtin/rev-parse.c10
-rwxr-xr-xt/t1506-rev-parse-diagnosis.sh24
2 files changed, 34 insertions, 0 deletions
diff --git a/builtin/rev-parse.c b/builtin/rev-parse.c
index c76b89dc5..8be641e07 100644
--- a/builtin/rev-parse.c
+++ b/builtin/rev-parse.c
@@ -476,6 +476,7 @@ N_("git rev-parse --parseopt [options] -- [<args>...]\n"
int cmd_rev_parse(int argc, const char **argv, const char *prefix)
{
int i, as_is = 0, verify = 0, quiet = 0, revs_count = 0, type = 0;
+ int has_dashdash = 0;
int output_prefix = 0;
unsigned char sha1[20];
const char *name = NULL;
@@ -489,6 +490,13 @@ int cmd_rev_parse(int argc, const char **argv, const char *prefix)
if (argc > 1 && !strcmp("-h", argv[1]))
usage(builtin_rev_parse_usage);
+ for (i = 1; i < argc; i++) {
+ if (!strcmp(argv[i], "--")) {
+ has_dashdash = 1;
+ break;
+ }
+ }
+
prefix = setup_git_directory();
git_config(git_default_config, NULL);
for (i = 1; i < argc; i++) {
@@ -765,6 +773,8 @@ int cmd_rev_parse(int argc, const char **argv, const char *prefix)
}
if (verify)
die_no_single_rev(quiet);
+ if (has_dashdash)
+ die("bad revision '%s'", arg);
as_is = 1;
if (!show_file(arg, output_prefix))
continue;
diff --git a/t/t1506-rev-parse-diagnosis.sh b/t/t1506-rev-parse-diagnosis.sh
index f950c1012..613d9bfe1 100755
--- a/t/t1506-rev-parse-diagnosis.sh
+++ b/t/t1506-rev-parse-diagnosis.sh
@@ -196,4 +196,28 @@ test_expect_success 'dotdot is not an empty set' '
test_cmp expect actual
'
+test_expect_success 'arg before dashdash must be a revision (missing)' '
+ test_must_fail git rev-parse foobar -- 2>stderr &&
+ test_i18ngrep "bad revision" stderr
+'
+
+test_expect_success 'arg before dashdash must be a revision (file)' '
+ >foobar &&
+ test_must_fail git rev-parse foobar -- 2>stderr &&
+ test_i18ngrep "bad revision" stderr
+'
+
+test_expect_success 'arg before dashdash must be a revision (ambiguous)' '
+ >foobar &&
+ git update-ref refs/heads/foobar HEAD &&
+ {
+ # we do not want to use rev-parse here, because
+ # we are testing it
+ cat .git/refs/heads/foobar &&
+ printf "%s\n" --
+ } >expect &&
+ git rev-parse foobar -- >actual &&
+ test_cmp expect actual
+'
+
test_done