Ignore "]" following an RDOCLINK

This caused problems when an RDOCLINK was discovered inside a TIDYLINK.
The ] wouldn't indicate the end of the RDOCLINK (any non-whitespace) so
it would consume the ] and any following punctuation.

This would cause a TIDYLINK to be unrecognized.

The handling of markup inside a paragraph needs its own parser one of
these days.

Author: drbrain

lib/rdoc/markup/formatter.rb

@@ -80,7 +80,7 @@ def accept_document document
   # Adds a special for links of the form rdoc-...:
 
   def add_special_RDOCLINK
-    @markup.add_special(/rdoc-[a-z]+:\S+/, :RDOCLINK)
+    @markup.add_special(/rdoc-[a-z]+:[^\s\]]+/, :RDOCLINK)
   end
 
   ##

test/test_rdoc_markup_formatter.rb

@@ -70,7 +70,17 @@ def special_names
   def test_add_special_RDOCLINK
     @to.add_special_RDOCLINK
 
+    def @to.handle_special_RDOCLINK special
+      "<#{special.text}>"
+    end
+
     assert_includes special_names, 'RDOCLINK'
+
+    document = doc(para('{foo}[rdoc-label:bar].'))
+
+    formatted = document.accept @to
+
+    assert_equal '{foo}[<rdoc-label:bar>].', formatted
   end
 
   def test_add_special_TIDYLINK