[ruby-core:50522] [ruby-trunk - Bug #7501] \w in a regular expression doesn't match international characters

Issue #7501 has been updated by charliesome (Charlie Somerville).


/[[:alpha:]]+/ should behave as you expect
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Bug #7501: \w in a regular expression doesn't match international characters
https://bugs.ruby-lang.org/issues/7501#change-34360

Author: eltomito (Tomas Partl)
Status: Open
Priority: Normal
Assignee: 
Category: core
Target version: 
ruby -v: ruby 1.9.3p0 (2011-10-30 revision 33570) [i686-linux]


When using regexp matching, \w doesn't match characters which are not in the English alphabet.
For example, the characters "žščřďťňaáéíóůúý" should all be matched by \w but aren't.

This program demonstrates the bug:

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# encoding: utf-8
match = /\w+/.match( "abcdefghijklmnopqrstuvwxyz" )
puts match.to_s
	
match = /\w+/.match( "áéíóůúýžščřďťň" ) #some Czech characters
puts match.to_s

match = /\w+/.match( "üäö" )	#some German characters
puts match.to_s
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Expected output:
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abcdefghijklmnopqrstuvwxyz
áéíóůúýžščřďťň
üäö
----------------------------------------------------------
Actual output:
----------------------------------------------------------
abcdefghijklmnopqrstuvwxyz


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