[PATCH] clarify error message when an abbreviated non-existent commit was specified

[Tim Harper <timcharper@gmail.com>]

When running the command 'git branch --contains efabdfb' on a repository that doesn't yet have efabdfb, git reports: "malformed object name efabdfb". To the uninitiated, this makes little sense (as far as they are concerned, efabdfb is perfectly formed).

This commit changes the message to "malformed object name or no such commit: efabdfb"
---
 parse-options.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/parse-options.c b/parse-options.c
index 3b71fbb..95eb1c4 100644
--- a/parse-options.c
+++ b/parse-options.c
@@ -615,7 +615,7 @@ int parse_opt_with_commit(const struct option *opt, const char *arg, int unset)
 	if (!arg)
 		return -1;
 	if (get_sha1(arg, sha1))
-		return error("malformed object name %s", arg);
+		return error("malformed object name or no such commit: %s", arg);
 	commit = lookup_commit_reference(sha1);
 	if (!commit)
 		return error("no such commit %s", arg);
-- 
1.6.4