enable-multibyte-characters

enable-multibyte-characters

[Didier Verna]

        I've found the origin of my 'enable-multibyte-characters[1] problem
(it was set to nil from time to time with no apparent reason). It happens when
using the picons + network stuff. The function 'mule-inhibit-code-conversion
(from mule-sysdp.el in the w3 package) contains the following code:


 ,----
|   (if (process-buffer proc)                        
|       (save-excursion                              
|         (set-buffer (process-buffer proc))         
|         (set 'mc-flag nil)                         
|         (if (fboundp 'set-buffer-multibyte)        
|             (set-buffer-multibyte nil)             
|           (set 'enable-multibyte-characters nil))))
`-----

I guess 'enable-multibyte-characters should be made buffer local first.
Bill ?


Footnotes: 
[1]  Steve, this is a good example of why it's really bad to have this
meaningless variable in XEmacs.

-- 
    /     /   _   _       Didier Verna        http://www.inf.enst.fr/~verna/
 - / / - / / /_/ /     ENST, INFRES C201.1       mailto:verna@inf.enst.fr
/_/ / /_/ / /__ /        46 rue Barrault        Tel.   +33 (1) 45 81 73 46
                       75013 Paris, France      Fax.   +33 (1) 45 81 31 19

Re: enable-multibyte-characters

[William M. Perry]

Didier Verna <verna@inf.enst.fr> writes:

> I've found the origin of my 'enable-multibyte-characters[1] problem (it
> was set to nil from time to time with no apparent reason). It happens
> when using the picons + network stuff. The function
> 'mule-inhibit-code-conversion (from mule-sysdp.el in the w3 package)
> contains the following code:
> 
>  ,----
> |   (if (process-buffer proc)                        
> |       (save-excursion                              
> |         (set-buffer (process-buffer proc))         
> |         (set 'mc-flag nil)                         
> |         (if (fboundp 'set-buffer-multibyte)        
> |             (set-buffer-multibyte nil)             
> |           (set 'enable-multibyte-characters nil))))
> `-----
> 
> I guess 'enable-multibyte-characters should be made buffer local first.
> Bill ?

enable-multibyte-characters is _supposed_ to be buffer-local.  It has
always been that way in Emacs, as far as I know.

> Footnotes: 
> [1]  Steve, this is a good example of why it's really bad to have this
> meaningless variable in XEmacs.

Agreed. :)

-bp

Re: enable-multibyte-characters

[Didier Verna]

wmperry@aventail.com (William M. Perry) writes:

> > Footnotes: 
> > [1]  Steve, this is a good example of why it's really bad to have this
> > meaningless variable in XEmacs.
> 
> Agreed. :)


        So, I guess the best workaround would be for mule-sysdp.el NOT to
touch this variable at all when running XEmacs. OK ? ;-)

-- 
    /     /   _   _       Didier Verna        http://www.inf.enst.fr/~verna/
 - / / - / / /_/ /     ENST, INFRES C201.1       mailto:verna@inf.enst.fr
/_/ / /_/ / /__ /        46 rue Barrault        Tel.   +33 (1) 45 81 73 46
                       75013 Paris, France      Fax.   +33 (1) 45 81 31 19

Re: enable-multibyte-characters

[William M. Perry]

Didier Verna <verna@inf.enst.fr> writes:

> wmperry@aventail.com (William M. Perry) writes:
> 
> > > Footnotes: 
> > > [1]  Steve, this is a good example of why it's really bad to have this
> > > meaningless variable in XEmacs.
> > 
> > Agreed. :)
> 
> 
> So, I guess the best workaround would be for mule-sysdp.el NOT to touch
> this variable at all when running XEmacs. OK ? ;-)

Does it do anything in XEmacs?  Or is it just there for compatiblity?  We
need to make sure the net connection is in raw binary mode.

-bp

Re: enable-multibyte-characters

[Didier Verna]

wmperry@aventail.com (William M. Perry) writes:

> Does it do anything in XEmacs?  Or is it just there for compatiblity?  We
> need to make sure the net connection is in raw binary mode.

        It doesn't do anything (appart from breaking code that beleive it's
there for good reasons). It's just here for compatibility with GNU Emacs.

        We had a discussion about this on xemacs-review. I and Hrvoje are for
simply removing it. Steve introduced it first and I don't think I've yet
convinced him that it's bad to have this variable around.

        What's sure however is that code that's supposed to be compatible with 
the two flavors of Emacs shouldn't even be aware of its eXistenZ under XEmacs.

-- 
    /     /   _   _       Didier Verna        http://www.inf.enst.fr/~verna/
 - / / - / / /_/ /     ENST, INFRES C201.1       mailto:verna@inf.enst.fr
/_/ / /_/ / /__ /        46 rue Barrault        Tel.   +33 (1) 45 81 73 46
                       75013 Paris, France      Fax.   +33 (1) 45 81 31 19