bug#15161: 24.3; python mode highlight annoyance

[Alexis Roda]

The symptom is that in the code:

    # no s'ha trobat cap oferta, l'alumne queda sense assignar
    # (alumne.assignacio == None)
    self._logger.info(
         u"no assigna '%s'",
         alumne.id
         )
    alumne.assignacio = None

'alumne.assignacio' isn't properly colorized after visiting the file.

In order to reproduce this behaviour:

emacs -Q /tmp/bugtest.py

type:

# a ==
variable = "value"

save, close and open the file again, the variable identifier isn't
properly highlighted.

Deleting the 'a' or a '=' in the comment produces the right
colorization, but adding them back makes it wrong again.




In GNU Emacs 24.3.1 (x86_64-unknown-linux-gnu, GTK+ Version 3.4.2)
 of 2013-08-17 on superjul
Windowing system distributor `The X.Org Foundation', version 11.0.11300000
System Description:     Ubuntu 12.04.2 LTS

Configured using:
 `configure '--prefix=/opt/emacs/24.3''

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

Major mode: Python

Minor modes in effect:
  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:
<down> <down> <return> # SPC a = = <return> s o v e
_ <backspace> <backspace> <backspace> m e _ v a r SPC
= SPC 4 <return> <up> <up> <right> <right> <right>
SPC <end> <return> o t h e r SPC v a r <backspace>
<backspace> <backspace> <backspace> _ v a r SPC = SPC
4 <up> <right> <up> <right> <right> <right> <delete>
SPC <backspace> <end> <backspace> = <left> <left> <end>
<return> # SPC f o o <return> <backspace> <up> <left>
<left> SPC <backspace> <down> C-a C-k C-k M-x r e p
o <tab> r <tab> <return>

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