apply: do not read from the filesystem under --index

diff --git a/builtin/check-ignore.c b/builtin/check-ignore.c
index e2a1cef6843b7db2f7ffb4b9c89003397948c748..594463a11bcba3cf99748ccdaeb055bd79283ddd 100644 (file)
--- a/builtin/check-ignore.c
+++ b/builtin/check-ignore.c
@@ -5,7 +5,7 @@
 #include "pathspec.h"
 #include "parse-options.h"
 
-static int quiet, verbose, stdin_paths, show_non_matching;
+static int quiet, verbose, stdin_paths, show_non_matching, no_index;
 static const char * const check_ignore_usage[] = {
 "git check-ignore [options] pathname...",
 "git check-ignore [options] --stdin < <list-of-paths>",
@@ -24,6 +24,8 @@ static const struct option check_ignore_options[] = {
                 N_("terminate input and output records by a NUL character")),
        OPT_BOOL('n', "non-matching", &show_non_matching,
                 N_("show non-matching input paths")),
+       OPT_BOOL(0, "no-index", &no_index,
+                N_("ignore index when checking")),
        OPT_END()
 };
 
@@ -166,7 +168,7 @@ int cmd_check_ignore(int argc, const char **argv, const char *prefix)
                die(_("--non-matching is only valid with --verbose"));
 
        /* read_cache() is only necessary so we can watch out for submodules. */
-       if (read_cache() < 0)
+       if (!no_index && read_cache() < 0)
                die(_("index file corrupt"));
 
        memset(&dir, 0, sizeof(dir));