Merge pull request #530 from aycabta/fix-code-fence

Fix CodeFence with unintended Array for format

Author: hsbt

lib/rdoc/markdown.kpeg

@@ -1161,7 +1161,7 @@ CodeFence = &{ github? }
               @Newline
             )+ > Ticks3 @Sp @Newline*
             { verbatim = RDoc::Markup::Verbatim.new text
-              verbatim.format = format.intern if format
+              verbatim.format = format.intern if format.instance_of?(String)
               verbatim
             }
 

test/test_rdoc_markdown.rb

@@ -973,6 +973,14 @@ def test_strong
     assert_equal '<b>_emphasis_</b>', @parser.strong('_emphasis_')
   end
 
+  def test_code_fence_with_unintended_array
+    doc = parse '```<ruby>```'
+
+    expected = doc(verb('<ruby>'))
+
+    assert_equal expected, doc
+  end
+
   def parse text
     @parser.parse text
   end