submodule: implement a config API for lookup of .gitmodules values

diff --git a/builtin/diff-tree.c b/builtin/diff-tree.c
index 1c4ad6223eb9547666ec21f81f410ef1a459ec92..12b683d0217856a23cb4c3271a173ce1b7bfbe68 100644 (file)
--- a/builtin/diff-tree.c
+++ b/builtin/diff-tree.c
@@ -82,7 +82,7 @@ static int diff_tree_stdin(char *line)
 
 static const char diff_tree_usage[] =
 "git diff-tree [--stdin] [-m] [-c] [--cc] [-s] [-v] [--pretty] [-t] [-r] [--root] "
-"[<common diff options>] <tree-ish> [<tree-ish>] [<path>...]\n"
+"[<common-diff-options>] <tree-ish> [<tree-ish>] [<path>...]\n"
 "  -r            diff recursively\n"
 "  --root        include the initial commit as diff against /dev/null\n"
 COMMON_DIFF_OPTIONS_HELP;