Merge branch 'master' into lj/refs

* master: (72 commits)
  runstatus: do not recurse into subdirectories if not needed
  grep: fix --fixed-strings combined with expression.
  grep: free expressions and patterns when done.
  Corrected copy-and-paste thinko in ignore executable bit test case.
  An illustration of rev-list --parents --pretty=raw
  Allow git-checkout when on a non-existant branch.
  gitweb: Decode long title for link tooltips
  git-svn: Fix fetch --no-ignore-externals with GIT_SVN_NO_LIB=1
  Ignore executable bit when adding files if filemode=0.
  Remove empty ref directories that prevent creating a ref.
  Use const for interpolate arguments
  git-archive: update documentation
  Deprecate merge-recursive.py
  gitweb: fix over-eager application of esc_html().
  Allow '(no author)' in git-svn's authors file.
  Allow 'svn fetch' on '(no date)' revisions in Subversion.
  git-repack: allow git-repack to run in subdirectory
  Remove upload-tar and make git-tar-tree a thin wrapper to git-archive
  git-tar-tree: Move code for git-archive --format=tar to archive-tar.c
  git-tar-tree: Remove duplicate git_config() call
  ...

1 files changed, 26 insertions, 0 deletions

diff --git a/sha1_name.c b/sha1_name.c
index 84d24c6abf..ed711f2079 100644
--- a/sha1_name.c
+++ b/sha1_name.c
@@ -431,6 +431,26 @@ static int peel_onion(const char *name, int len, unsigned char *sha1)
 	return 0;
 }
 
+static int get_describe_name(const char *name, int len, unsigned char *sha1)
+{
+	const char *cp;
+
+	for (cp = name + len - 1; name + 2 <= cp; cp--) {
+		char ch = *cp;
+		if (hexval(ch) & ~0377) {
+			/* We must be looking at g in "SOMETHING-g"
+			 * for it to be describe output.
+			 */
+			if (ch == 'g' && cp[-1] == '-') {
+				cp++;
+				len -= cp - name;
+				return get_short_sha1(cp, len, sha1, 1);
+			}
+		}
+	}
+	return -1;
+}
+
 static int get_sha1_1(const char *name, int len, unsigned char *sha1)
 {
 	int ret, has_suffix;
@@ -472,6 +492,12 @@ static int get_sha1_1(const char *name, int len, unsigned char *sha1)
 	ret = get_sha1_basic(name, len, sha1);
 	if (!ret)
 		return 0;
+
+	/* It could be describe output that is "SOMETHING-gXXXX" */
+	ret = get_describe_name(name, len, sha1);
+	if (!ret)
+		return 0;
+
 	return get_short_sha1(name, len, sha1, 0);
 }