From: John Firebaugh <john.firebaugh@...>
Date: 2012-02-05T08:28:13+09:00
Subject: [ruby-core:42354] [ruby-trunk - Bug #5968][Open] Encoding.compatible? with binary string


Issue #5968 has been reported by John Firebaugh.

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Bug #5968: Encoding.compatible? with binary string
https://bugs.ruby-lang.org/issues/5968

Author: John Firebaugh
Status: Open
Priority: Normal
Assignee: 
Category: 
Target version: 
ruby -v: ruby 1.9.3p0 (2011-10-30 revision 33570) [x86_64-darwin10.8.0]


=begin
According to #5920:

  The original meaning of Encoding.compatible?(str1, str2) is the encoding of concatenated string.
  In other codes, it is
    str = str1.dup.concat str2
    str.encoding <- this!

But observe:
  a = "a".force_encoding("binary")
  b = "b".force_encoding("us-ascii")
  a.dup.concat(b).encoding   #=> #<Encoding:ASCII-8BIT>
  Encoding.compatible?(a, b) #=> #<Encoding:US-ASCII>

I believe the latter should return #<Encoding:ASCII-8BIT>.
=end



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