git-svn: fix show-ignore when not connected to the repository root

diff --git a/builtin-read-tree.c b/builtin-read-tree.c
index 3f6cae36ce9b730bf6b76f3f1fedd006f356854b..e47715538bd1ff81d1a91e0a43cd9bdbe1cb0d3f 100644 (file)
--- a/builtin-read-tree.c
+++ b/builtin-read-tree.c
@@ -85,7 +85,7 @@ static void prime_cache_tree(void)
 
 }
 
-static const char read_tree_usage[] = "git-read-tree (<sha> | [[-m [--aggressive] | --reset | --prefix=<prefix>] [-u | -i]] <sha1> [<sha2> [<sha3>]])";
+static const char read_tree_usage[] = "git-read-tree (<sha> | [[-m [--aggressive] | --reset | --prefix=<prefix>] [-u | -i]] [--exclude-per-directory=<gitignore>] <sha1> [<sha2> [<sha3>]])";
 
 static struct lock_file lock_file;
 
@@ -133,7 +133,7 @@ int cmd_read_tree(int argc, const char **argv, const char *unused_prefix)
                 *  entries and put the entries from the tree under the
                 * given subdirectory.
                 */
-               if (!strncmp(arg, "--prefix=", 9)) {
+               if (!prefixcmp(arg, "--prefix=")) {
                        if (stage || opts.merge || opts.prefix)
                                usage(read_tree_usage);
                        opts.prefix = arg + 9;
@@ -179,7 +179,7 @@ int cmd_read_tree(int argc, const char **argv, const char *unused_prefix)
                        continue;
                }
 
-               if (!strncmp(arg, "--exclude-per-directory=", 24)) {
+               if (!prefixcmp(arg, "--exclude-per-directory=")) {
                        struct dir_struct *dir;
 
                        if (opts.dir)