builtin-help: make some internal functions available to other builtins

diff --git a/builtin-tar-tree.c b/builtin-tar-tree.c
index 8055ddab9b07e017a832e2fedf31b35fa0788a13..f4bea4a322c26a54734286073c5e67444555c2d9 100644 (file)
--- a/builtin-tar-tree.c
+++ b/builtin-tar-tree.c
@@ -8,7 +8,7 @@
 #include "quote.h"
 
 static const char tar_tree_usage[] =
-"git-tar-tree [--remote=<repo>] <tree-ish> [basedir]\n"
+"git tar-tree [--remote=<repo>] <tree-ish> [basedir]\n"
 "*** Note that this command is now deprecated; use git-archive instead.";
 
 int cmd_tar_tree(int argc, const char **argv, const char *prefix)
@@ -31,7 +31,7 @@ int cmd_tar_tree(int argc, const char **argv, const char *prefix)
        nargv[nargc++] = "git-archive";
        nargv[nargc++] = "--format=tar";
 
-       if (2 <= argc && !strncmp("--remote=", argv[1], 9)) {
+       if (2 <= argc && !prefixcmp(argv[1], "--remote=")) {
                nargv[nargc++] = argv[1];
                argv++;
                argc--;