Merge pull request #617 from ruby/backport-ruby-core

fix regexp introduced at recent RDoc update (r62924).

Author: hsbt

lib/rdoc/text.rb

@@ -169,7 +169,7 @@ def strip_stars text
 
     encoding = text.encoding
 
-    text = text.gsub %r%Document-method:\s+[\w:.#=!?|^&<>~+-/*\%@`\[\]]+%, ''
+    text = text.gsub %r%Document-method:\s+[\w:.#=!?|^&<>~+\-/*\%@`\[\]]+%, ''
 
     space = ' '
     space = RDoc::Encoding.change_encoding space, encoding if encoding