From xemacs-m  Fri Mar 21 02:10:29 1997
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From: =?ISO-2022-JP?B?GyRCPGkyLBsoQiAbJEJDTkknGyhC?= / MORIOKA Tomohiko <morioka@jaist.ac.jp>
To: Steven L Baur <steve@miranova.com>
cc: xemacs-beta@xemacs.org
Subject: Re: char-before (Re: XEmacs 19.15-b102 is released) 
In-reply-to: Your message of "20 Mar 1997 23:15:33 PST."
             <m2lo7hlnqi.fsf@altair.xemacs.org> 
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Date: Fri, 21 Mar 1997 17:06:35 JST
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>>>>> In <m2lo7hlnqi.fsf@altair.xemacs.org> 
>>>>>	"sb" = Steven L Baur <steve@miranova.com> wrote:

sb> MORIOKA Tomohiko writes:

sb> > char-before: a built-in function.

sb> > Return character in current buffer preceding position POS.
sb> > POS is an integer or a buffer pointer.
sb> > If POS is out of range, the value is nil.
sb> > If `enable-multibyte-characters' is nil or POS is not at character boundary,
sb> > multi-byte form is ignored, and only one byte preceding POS
sb> > is returned as a character.

sb> > (char-before POS)

sb> O.K.  Do I need to make a dummy definition of
sb> enable-multibyte-characters for compatibility?  It sounds too
sb> dangerous to actually implement.

  I think there is no need to emulate variable
`enable-multibyte-characters'.  In XEmacs 20, mule and without mule is
selected when building, but Emacs 20 is not.

  Latin-1 people may want traditional latin-1 behavior in Emacs 20,
but I think it is better to obey mule API, at least for applications.

  Anyway it seems not bad to dummy definition of variable
`enable-multibyte-characters'.  Following is DOC-string:

======================================================================
enable-multibyte-characters's value is 
t

Documentation:
Non-nil means the buffer contents are regarded as multi-byte form
of characters, not a binary code.  This affects the display, file I/O,
and behaviors of various editing commands.
======================================================================

  If XEmacs 20 defines it, it should be a constant defined when
building.


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-- 
----------------------------------------------------------------------
MORIOKA Tomohiko <morioka@jaist.ac.jp>
        Japan advanced Institute of Science and Technology, Hokuriku
                Asahi-dai, Tatsu-no-kuchi ch=F4, Nomi, Ishikawa, Japan
------------------------------------------ Frisch, Frei, Fr=F6hlich! ---

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