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git-show-ref --verify: Fail if called without a reference
builtin-show-ref.c (cmd_show_ref): Fail if called with --verify option but without a reference. Signed-off-by: Dmitry V. Levin <ldv@altlinux.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
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@ -221,9 +221,11 @@ int cmd_show_ref(int argc, const char **argv, const char *prefix)
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}
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if (verify) {
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unsigned char sha1[20];
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if (!pattern)
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die("--verify requires a reference");
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while (*pattern) {
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unsigned char sha1[20];
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if (!strncmp(*pattern, "refs/", 5) &&
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resolve_ref(*pattern, sha1, 1, NULL)) {
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if (!quiet)
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