nobu	2008-02-07 16:33:50 +0900 (Thu, 07 Feb 2008)

  New Revision: 15395

  Modified files:
    trunk/ChangeLog
    trunk/string.c

  Log:
    * string.c (str_replace_shared): replaces string with sharing.
    
    * string.c (rb_str_new4, rb_str_associate, rb_str_associated): allows
      associated strings shared.
    
    * string.c (rb_str_dup, rb_str_substr, rb_str_replace): shares memory.
      [ruby-core:15400]


  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/trunk/string.c?r1=15395&r2=15394&diff_format=u
  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/trunk/ChangeLog?r1=15395&r2=15394&diff_format=u