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A bug in skip_chars

From: ShengHuo ZHU
Subject: A bug in skip_chars
Date: Fri, 15 Sep 2000 04:57:27 -0400
User-agent: Gnus/5.0808 (Gnus v5.8.8) Emacs/21.0.90 
I found a bug in Emacs 21.0.90.  The problem is

    (with-temp-buffer
      (insert "0123" 223 "ABCD")
      (goto-char (point-min))
      (skip-chars-forward "^\240-\377")
      (point))

Emacs 21.0.90.3 returns 10
Emacs 20.7.1    returns 5

By investigating the code of skip_chars, the problem is
unibyte_char_to_multibyte converts "^\240-\377" to latin-iso8859-1
characters instead of eight-bit-graphic, therefore the
eight-bit-graphic character is skipped.

ShengHuo
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