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-rw-r--r--builtin/rev-parse.c3
-rwxr-xr-xt/t1502-rev-parse-parseopt.sh7
2 files changed, 10 insertions, 0 deletions
diff --git a/builtin/rev-parse.c b/builtin/rev-parse.c
index b259d8990a..85c271acd7 100644
--- a/builtin/rev-parse.c
+++ b/builtin/rev-parse.c
@@ -479,6 +479,9 @@ static int cmd_parseopt(int argc, const char **argv, const char *prefix)
if (!s)
s = help;
+ if (s == sb.buf)
+ die(_("missing opt-spec before option flags"));
+
if (s - sb.buf == 1) /* short option only */
o->short_name = *sb.buf;
else if (sb.buf[1] != ',') /* long option only */
diff --git a/t/t1502-rev-parse-parseopt.sh b/t/t1502-rev-parse-parseopt.sh
index 284fe18e72..de1d48f3ba 100755
--- a/t/t1502-rev-parse-parseopt.sh
+++ b/t/t1502-rev-parse-parseopt.sh
@@ -306,6 +306,13 @@ test_expect_success 'test --parseopt help output: "wrapped" options normal "or:"
test_cmp expect actual
'
+test_expect_success 'test --parseopt invalid opt-spec' '
+ test_write_lines x -- "=, x" >spec &&
+ echo "fatal: missing opt-spec before option flags" >expect &&
+ test_must_fail git rev-parse --parseopt -- >out <spec 2>err &&
+ test_cmp expect err
+'
+
test_expect_success 'test --parseopt help output: multi-line blurb after empty line' '
sed -e "s/^|//" >spec <<-\EOF &&
|cmd [--some-option]