bug#11837: 24.1.50; *Compile-Log* Error: Don't know how to compile nil

[Vladimir Lomov <lomov.vl@gmail.com>]

Hello,

I run into a problem with AUCTeX and recent Emacs.

I prepared small LaTeX document and run Emacs

emacs -Q --debug-init --eval '(setq load-path (cons "/usr/share/emacs/site-lisp" load-path))' -l /usr/share/emacs/site-lisp/auctex.el ex.ltx

After start in window at bottom message is shown:

Error: Don't know how to compile nil

The name of window is `*Compile-Log*'.

I suspect that problem with `byte-compile' changed in rev. 108778 which
is used in `font-latex.el' file, part of AUCTeX package.

Sorry, I can't make more minimal example, so I don't know the actual
reason of the problem.

In GNU Emacs 24.1.50.1 (x86_64-unknown-linux-gnu, GTK+ Version 3.4.3)
 of 2012-07-02 on smoon4
Bzr revision: 108825 cyd@gnu.org-20120701110517-1w8auskac5c0mu1l
Windowing system distributor `The X.Org Foundation', version 11.0.11202000
Configured using:
 `configure '--prefix=/usr' '--sysconfdir=/etc' '--localstatedir=/var'
 '--libexecdir=/usr/lib' '--with-xpm' '--with-jpeg' '--with-tiff'
 '--with-gif' '--with-png' '--with-rsvg' '--with-x-toolkit=gtk3'
 '--with-xft' '--with-libotf' '--with-dbus' '--with-gsettings'
 '--without-sound' 'CFLAGS=-march=x86-64 -mtune=generic -O2 -pipe
 -fstack-protector --param=ssp-buffer-size=4 -D_FORTIFY_SOURCE=2'
 'LDFLAGS=-Wl,-O1,--sort-common,--as-needed,-z,relro''

Important settings:
  value of $LC_COLLATE: C
  value of $LANG: ru_RU.UTF-8
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: LaTeX/P

Minor modes in effect:
  TeX-PDF-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
M-x r e p o r t - e a <backspace> m a c s - b u g 
<return>

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
Applying style hooks... done

Load-path shadows:
None found.

Features:
(shadow sort gnus-util mail-extr emacsbug message idna byte-opt
format-spec rfc822 mml mml-sec mm-decode mm-bodies mm-encode mail-parse
rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045
ietf-drums mm-util mail-prsvr mail-utils tex-bar tex-buf toolbar-x
noutline outline font-latex warnings bytecomp byte-compile cconv
macroexp latex easy-mmode edmacro kmacro tex-style tex dbus xml advice
help-fns advice-preload easymenu latexenc tex-site auto-loads time-date
cyril-util tooltip ediff-hook vc-hooks lisp-float-type mwheel x-win
x-dnd tool-bar dnd fontset image regexp-opt fringe tabulated-list
newcomment lisp-mode register page menu-bar rfn-eshadow timer select
scroll-bar mouse jit-lock font-lock syntax facemenu font-core frame cham
georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao
korean japanese hebrew greek romanian slovak czech european ethiopic
indian cyrillic chinese case-table epa-hook jka-cmpr-hook help simple
abbrev minibuffer loaddefs button faces cus-face files text-properties
overlay sha1 md5 base64 format env code-pages mule custom widget
hashtable-print-readable backquote make-network-process dbusbind
dynamic-setting system-font-setting font-render-setting move-toolbar gtk
x-toolkit x multi-tty emacs)