improve depth heuristic for maximum delta size

diff --git a/describe.c b/describe.c
index ff65742615cb6862d3699e4f301d671a7eadc2e2..8a9cd5d52c555330c512b977179ab030ccd28861 100644 (file)
--- a/describe.c
+++ b/describe.c
@@ -105,11 +105,11 @@ static void describe(char *arg, int last_one)
        static int initialized = 0;
        struct commit_name *n;
 
-       if (get_sha1(arg, sha1) < 0)
-               usage(describe_usage);
+       if (get_sha1(arg, sha1))
+               die("Not a valid object name %s", arg);
        cmit = lookup_commit_reference(sha1);
        if (!cmit)
-               usage(describe_usage);
+               die("%s is not a valid '%s' object", arg, commit_type);
 
        if (!initialized) {
                initialized = 1;