From: Robert Klemme <redmine@...>
Date: 2010-02-22T17:13:54+09:00
Subject: [ruby-core:28290] [Bug #2778] Regular Expression Named Group Matching does not work with String#[]

Bug #2778: Regular Expression Named Group Matching does not work with String#[]
http://redmine.ruby-lang.org/issues/show/2778

Author: Robert Klemme
Status: Open, Priority: Low
Category: core
ruby -v: ruby 1.9.1p376 (2009-12-07 revision 26041) [i386-cygwin]

I just noticed this:

irb(main):001:0> s = "Robert Klemme"
=> "Robert Klemme"
irb(main):002:0> s[/(?<first>\w+)\s+\w+/, :first]
TypeError: can't convert Symbol into Integer
        from (irb):2:in `[]'
        from (irb):2
        from /opt/bin/irb19:12:in `<main>'
irb(main):003:0> s.match(/(?<first>\w+)\s+\w+/)[:first]
=> "Robert"

IMHO it's just a small glitch but I believe for consistency reasons we should allow for a symbol as second argument with String#[] as well.


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