[Bug-AUCTeX] Re: preview-1.248; preview completely broken?

[R.P.I. Lewis]

David Kastrup <address@hidden> writes:

>> with debug-on-signal the first backtrace produced is:
>>
>> Debugger entered--Lisp error: (wrong-type-argument arrayp nil)
>>   coding-system-plist(nil)
>>   coding-system-get(nil alias-coding-systems)
>>   coding-system-base(nil)
>>   byte-code(".
>
> Oops, that looks bad.  It means that buffer-file-coding-system for the
> buffer from which you started preview-latex is _nil_.  Is this the
> same for default-buffer-file-coding-system on your system as well?
>
> C-h v default-buffer-file-coding-system RET

default-buffer-file-coding-system's value is nil

C-h C RET says

Coding system for saving this buffer:
  Not set locally, use the default.
Default coding system (for new files):
  nil
Coding system for keyboard input:
  nil
Coding system for terminal output:
  nil
Defaults for subprocess I/O:
  decoding: - -- undecided

  encoding: 1 -- iso-latin-1 (alias: iso-8859-1 latin-1)


>
> would give that information.  Do you have any idea how this value
> comes about?  It would indicate that Emacs can't figure out a buffer
> encoding for writing the file, namely that your locale settings are so
> inconsistent as to make Emacs unable to guess a coding system.
>

I have

$ locale
LANG=
LC_CTYPE="C"
LC_COLLATE="C"
LC_TIME="C"
LC_NUMERIC="C"
LC_MONETARY="C"
LC_MESSAGES="C"
LC_ALL=

is that the cause? (and how do i chaange that? export LANG=C and
export LC_ALL=C dont seem to help)

> Can you write files without Emacs asking for a coding system?

i've never been asked anything (and files save fine)