dir.c: literal match with wildcard in pathspec should still glob

When a path with wildcard characters, e.g. 'f*o', exists in the
working tree, "git add -- 'f*o'" stops after happily finding
that there is 'f*o' and adding it to the index, without
realizing there may be other paths, e.g. 'foooo', that may match
the given pathspec.

This is because dir.c:do_match_pathspec() disables further
matches with pathspec when it finds an exact match.

Reported-by: piotrsiupa <piotrsiupa@gmail.com>
Helped-by: Jeff King <peff@peff.net>
Signed-off-by: K Jayatheerth <jayatheerthkulkarni2005@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: jayatheerthkulkarni

dir.c

@@ -519,7 +519,8 @@ static int do_match_pathspec(struct index_state *istate,
 		    ( exclude && !(ps->items[i].magic & PATHSPEC_EXCLUDE)))
 			continue;
 
-		if (seen && seen[i] == MATCHED_EXACTLY)
+		if (seen && seen[i] == MATCHED_EXACTLY &&
+		    ps->items[i].nowildcard_len == ps->items[i].len)
 			continue;
 		/*
 		 * Make exclude patterns optional and never report

t/meson.build

@@ -787,6 +787,7 @@ integration_tests = [
   't6134-pathspec-in-submodule.sh',
   't6135-pathspec-with-attrs.sh',
   't6136-pathspec-in-bare.sh',
+  't6137-pathspec-wildcards-literal.sh',
   't6200-fmt-merge-msg.sh',
   't6300-for-each-ref.sh',
   't6301-for-each-ref-errors.sh',