From: Run Paint Run Run <redmine@...>
Date: 2009-08-05T02:33:41+09:00
Subject: [ruby-core:24751] [Bug #1873] MatchData#[]: Omits All But Last Captures Corresponding to the Same Named Group

Issue #1873 has been updated by Run Paint Run Run.


Yui,

Thank you for your help. I didn't realise it would be difficult. I'd assumed that as:
  
  /(?<a>a)(?<a>b)(?<a>c)/.named_captures
  => {"a"=>[1, 2, 3]}

And:
  
  'abc'.match(/(?<a>a)(?<a>b)(?<a>c)/)[1..3]
  => ["a", "b", "c"]

It would be simply be a matter of mapping one to the other.

How about then if we set this ticket's priority to 'Low', then add a note to the documentation of MatchData#[] that explains this quirk? :-)

(As an aside that Oniguruma document would make a great start for the RDoc of Regexp. Currently the actual syntax of the patterns doesn't seem to appear anywhere in `ri`.)
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