Path: utzoo!utgpu!water!watmath!clyde!rutgers!husc6!bloom-beacon!mgm.mit.edu!wolfgang
From: wolfgang@mgm.mit.edu (Wolfgang Rupprecht)
Newsgroups: comp.emacs
Subject: Re: Buffer Local Variables
Message-ID: <2673@bloom-beacon.MIT.EDU>
Date: 30 Jan 88 16:34:07 GMT
References: <8770@ism780c.UUCP>
Sender: daemon@bloom-beacon.MIT.EDU
Reply-To: wolfgang@mgm.mit.edu (Wolfgang Rupprecht)
Organization: Freelance Software Consultant, Cambridge, Ma.
Lines: 22

In article <8770@ism780c.UUCP> mikep@ism780c.UUCP (Michael A. Petonic) writes:
>I've notices a peculiarity with GNU Emacs version 18.40.4 on
>BSD.  Say that I define a variable FOO and make that variable
>buffer local.  Say I store a value of "BAR" into FOO.  
>[...] when I change modes, say from
>Emacs-lisp to Fundemental in that buffer... BOOM!  It wipes
>out the value of FOO.  It's now set to nil.  

Changing modes kills all local variables. See the files *-mode.el 
and look for functions *-mode. You will notice all of them do a 
call to (kill-all-local-variables). Here is its docstring.

kill-all-local-variables:
Eliminate all the buffer-local variable values of the current buffer.
This buffer will then see the default values of all variables.

If you *really* want to keep local variables across mode switches, you
can try removing these calls.
--
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