[PATCH] Simplify building of programs

[git.git] / diff-tree.c

diff --git a/diff-tree.c b/diff-tree.c
index 2225919..0f37092 100644 (file)
--- a/diff-tree.c
+++ b/diff-tree.c
@@ -178,6 +178,8 @@ static int diff_tree_sha1(const unsigned char *old, const unsigned char *new, co
        return retval;
 }
 
+static char *diff_tree_usage = "diff-tree [-r] [-z] <tree sha1> <tree sha1>";
+
 int main(int argc, char **argv)
 {
        unsigned char old[20], new[20];
@@ -194,10 +196,10 @@ int main(int argc, char **argv)
                        line_termination = '\0';
                        continue;
                }
-               usage("diff-tree [-r] [-z] <tree sha1> <tree sha1>");
+               usage(diff_tree_usage);
        }
 
        if (argc != 3 || get_sha1_hex(argv[1], old) || get_sha1_hex(argv[2], new))
-               usage("diff-tree <tree sha1> <tree sha1>");
+               usage(diff_tree_usage);
        return diff_tree_sha1(old, new, "");
 }