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-rw-r--r--diff-tree.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/diff-tree.c b/diff-tree.c
index 2225919..0f37092 100644
--- 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, "");
}