worktree: prepare for more checks of whether path can become worktree

diff --git a/grep.h b/grep.h
index 01d2cba6f80921538d0269aefcad6f11218392b0..0ba62a11c5cc2767b15b52aca20a0ea5b00870b8 100644 (file)
--- a/grep.h
+++ b/grep.h
@@ -163,6 +163,7 @@ struct grep_opt {
        int relative;
        int pathname;
        int null_following_name;
+       int only_matching;
        int color;
        int max_depth;
        int funcname;