From: Tuples Arefun <redmine@...>
Date: 2009-08-17T05:36:10+09:00
Subject: [ruby-core:24937] [Bug #1943] unexpected behavior of tr with unicode strings

Bug #1943: unexpected behavior of tr with unicode strings
http://redmine.ruby-lang.org/issues/show/1943

Author: Tuples Arefun
Status: Open, Priority: Normal
ruby -v: ruby 1.9.1p129 (2009-05-12 revision 23412) [i386-darwin9.7.0]

The unicode code point 8221 is to be replaced by 34, and not 43

wide = [12288, 65288, 65289, 65291, 12540, 8221]
ascii = [32, 40, 41, 43, 45, 34]
foo = [8221, 19997, 37329, 22825, 20351, 8221]
bar = foo.pack('U*').tr(wide.pack('U*'), ascii.pack('U*'))
bar.unpack('U*')
 
=> [43, 19997, 37329, 22825, 20351, 43]

It works correctly in this example:

[8221].pack('U*').tr([8221].pack('U*'), [34].pack('U*')).unpack('U*')
=> [34]

Why, I don't know.


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