[ruby-talk:6228] RE: MatchData#[](0)

>   str.gsub(/aeiou]/) { $&.upcase }
> But suppose you didn't want to use $&, butt wanted to use a
> MatchData object md and reference md[0].

Well, this is not a real answer, but here's on kind of workaround:

  ruby -v -e' "abc".gsub!(/\w/) {|m| p m }'
  ruby 1.6.2 (2000-10-16) [i686-linux]
  "a"
  "b"
  "c"

The problem with this is that 

1) string is passed to the block, not MatchData as you wanted

  ruby -e'str="abc"; str.gsub!(/\w/) {|m| p m.type }; p str'
  String
  String
  String
  ""

2) For some (probably quite simple) reason (I'm just too tired
   to find out) it does not work nice when using character class:

  ruby -e'str="abc"; str.gsub!(/[aeiou]/) {|m| p m; m.upcase }; p str'
  "a"
  "Abc"

	- Aleksi