Teach git-describe how to run name-rev
Often users want to know not which tagged version a commit came
after, but which tagged version a commit is contained within.
This latter task is the job of git-name-rev, but most users are
looking to git-describe to do the job.
Junio suggested we make `git describe --contains` run the correct
tool, `git name-rev`, and that's exactly what we do here. The output
of name-rev was adjusted slightly through the new --name-only option,
allowing describe to execv into name-rev and maintain its current
output format.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
diff --git a/builtin-describe.c b/builtin-describe.c
index 165917e..669110c 100644
--- a/builtin-describe.c
+++ b/builtin-describe.c
@@ -3,6 +3,7 @@
#include "tag.h"
#include "refs.h"
#include "builtin.h"
+#include "exec_cmd.h"
#define SEEN (1u<<0)
#define MAX_TAGS (FLAG_BITS - 1)
@@ -242,12 +243,15 @@
int cmd_describe(int argc, const char **argv, const char *prefix)
{
int i;
+ int contains = 0;
for (i = 1; i < argc; i++) {
const char *arg = argv[i];
if (*arg != '-')
break;
+ else if (!strcmp(arg, "--contains"))
+ contains = 1;
else if (!strcmp(arg, "--debug"))
debug = 1;
else if (!strcmp(arg, "--all"))
@@ -272,6 +276,16 @@
save_commit_buffer = 0;
+ if (contains) {
+ const char **args = xmalloc((4 + argc - i) * sizeof(char*));
+ args[0] = "name-rev";
+ args[1] = "--name-only";
+ args[2] = "--tags";
+ memcpy(args + 3, argv + i, (argc - i) * sizeof(char*));
+ args[3 + argc - i] = NULL;
+ return cmd_name_rev(3 + argc - i, args, prefix);
+ }
+
if (argc <= i)
describe("HEAD", 1);
else
