dir.c: glob brace expansion [Fix GH-1061]

* dir.c (ruby_brace_expand): glob brace expansion edge case fix.
  When there are closing braces '}' before a open brace '{' it
  must be ignored and considered as literal.
  [ruby-core:71138] [Bug #11609]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52212 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/dir.c b/dir.c
index 36cdadc0e9..59057b4908 100644
--- a/dir.c
+++ b/dir.c
@@ -2041,7 +2041,7 @@ ruby_brace_expand(const char *str, int flags, ruby_glob_func *func, VALUE arg,
 	if (*p == '{' && nest++ == 0) {
 	    lbrace = p;
 	}
-	if (*p == '}' && --nest <= 0) {
+	if (*p == '}' && lbrace && --nest == 0) {
 	    rbrace = p;
 	    break;
 	}