dir.c: fix Dir.glob starts with brace

* dir.c (ruby_glob0): expand braces if a glob pattern starts with
  brace.
  [ruby-core:91728] [Bug #15649]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67332 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 8 insertions, 0 deletions

diff --git a/test/ruby/test_dir.rb b/test/ruby/test_dir.rb
index 51ea8e95e0..93ae3c3ed9 100644
--- a/test/ruby/test_dir.rb
+++ b/test/ruby/test_dir.rb
@@ -205,6 +205,14 @@ class TestDir < Test::Unit::TestCase
     end
   end
 
+  def test_glob_starts_with_brace
+    Dir.chdir(@root) do
+      bug15649 = '[ruby-core:91728] [Bug #15649]'
+      assert_equal(["#{@root}/a", "#{@root}/b"],
+                   Dir.glob("{#{@root}/a,#{@root}/b}"), bug15649)
+    end
+  end
+
   if Process.const_defined?(:RLIMIT_NOFILE)
     def test_glob_too_may_open_files
       assert_separately([], "#{<<-"begin;"}\n#{<<-'end;'}", chdir: @root)