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git-name-rev: add a --(no-)undefined option.

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Rework get_rev_name to return NULL rather than "undefined" when a
reference is undefined. If --undefined is passed (default), git-name-rev
prints "undefined" for the name, else it die()s.

Make git-describe use --no-undefined when calling git-name-rev so
that --contains behavior matches the standard git-describe one.

Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Pierre Habouzit
2007-12-24 12:18:22 +01:00
committed by Junio C Hamano
parent 30ffa60377
commit a2cf9f445e
2 changed files with 26 additions and 11 deletions
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3
builtin-describe.c
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@ -271,10 +271,11 @@ int cmd_describe(int argc, const char **argv, const char *prefix)
save_commit_buffer = 0;
if (contains) {
const char **args = xmalloc((5 + argc) * sizeof(char*));
const char **args = xmalloc((6 + argc) * sizeof(char*));
int i = 0;
args[i++] = "name-rev";
args[i++] = "--name-only";
args[i++] = "--no-undefined";
if (!all) {
args[i++] = "--tags";
if (pattern) {