[PATCH 3/2] ls-files: only recurse on active submodules

[Brandon Williams <bmwill@google.com>]

Add in a check to see if a submodule is active before attempting to
recurse.  This prevents 'ls-files' from trying to operate on a submodule
which may not exist in the working directory.

Signed-off-by: Brandon Williams <bmwill@google.com>
---

After you mentioned possibly needing to check if a submodule is initialized, I
went back and noticed that there was indeed no check for it...So this patch
adds in the necessary check to see if a submodule is active or not before
attempting to recurse.

 builtin/ls-files.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/builtin/ls-files.c b/builtin/ls-files.c
index d449e46db..10ddc0306 100644
--- a/builtin/ls-files.c
+++ b/builtin/ls-files.c
@@ -15,6 +15,7 @@
 #include "string-list.h"
 #include "pathspec.h"
 #include "run-command.h"
+#include "submodule.h"
 
 static int abbrev;
 static int show_deleted;
@@ -235,7 +236,8 @@ static void show_ce_entry(const char *tag, const struct cache_entry *ce)
 		die("git ls-files: internal error - cache entry not superset of prefix");
 
 	if (recurse_submodules && S_ISGITLINK(ce->ce_mode) &&
-	    submodule_path_match(&pathspec, name.buf, ps_matched)) {
+	    submodule_path_match(&pathspec, name.buf, ps_matched) &&
+	    is_submodule_initialized(ce->name)) {
 		show_gitlink(ce);
 	} else if (match_pathspec(&pathspec, name.buf, name.len,
 				  len, ps_matched,
@@ -604,8 +606,10 @@ int cmd_ls_files(int argc, const char **argv, const char *cmd_prefix)
 	if (require_work_tree && !is_inside_work_tree())
 		setup_work_tree();
 
-	if (recurse_submodules)
+	if (recurse_submodules) {
+		gitmodules_config();
 		compile_submodule_options(argv, &dir, show_tag);
+	}
 
 	if (recurse_submodules &&
 	    (show_stage || show_deleted || show_others || show_unmerged ||
-- 
2.12.2.762.g0e3151a226-goog