bug#11679: 24.1.50; gud/pdb3 hangs in lines with list comprehension

[Andreas Politz]

For list comprehensions pdb3 outputs a line like this.

> FILE(LINE)<listcomp>()

But the `listcomp' token is not captured by the `gud-pdb-marker-regexp',
resulting in pdb appearing to be hanging.  (This may be python2/3
related.)

diff -c -L /usr/share/emacs/24.1.50/lisp/progmodes/gud.el.gz -L \#\<buffer\ 
gud.el.gz\> /tmp/jka-com19603ZkZ /tmp/buffer-content-19603z4l
*** /usr/share/emacs/24.1.50/lisp/progmodes/gud.el.gz
--- #<buffer gud.el.gz>
***************
*** 1567,1573 ****
  ;; Last group is for return value, e.g. "> test.py(2)foo()->None"
  ;; Either file or function name may be omitted: "> <string>(0)?()"
  (defvar gud-pdb-marker-regexp
!   "^> 
\\([-a-zA-Z0-9_/.:\\]*\\|<string>\\)(\\([0-9]+\\))\\([a-zA-Z0-9_]*\\|\\?\\|<module>\\)()\\(->[^\n\r]*\\)?[\n\r]")
  
  (defvar gud-pdb-marker-regexp-file-group 1)
  (defvar gud-pdb-marker-regexp-line-group 2)
--- 1567,1573 ----
  ;; Last group is for return value, e.g. "> test.py(2)foo()->None"
  ;; Either file or function name may be omitted: "> <string>(0)?()"
  (defvar gud-pdb-marker-regexp
!   "^> 
\\([-a-zA-Z0-9_/.:\\]*\\|<string>\\)(\\([0-9]+\\))\\([a-zA-Z0-9_]*\\|\\?\\|<\\(?:module\\|listcomp\\)>\\)()\\(->[^\n\r]*\\)?[\n\r]")
  
  (defvar gud-pdb-marker-regexp-file-group 1)
  (defvar gud-pdb-marker-regexp-line-group 2)

Diff finished.  Tue Jun 12 09:19:31 2012



In GNU Emacs 24.1.50.1 (x86_64-pc-linux-gnu, GTK+ Version 2.20.1)
 of 2012-06-05 on cw-bkp0, modified by Debian
 (emacs-snapshot package, version 2:20120524-1+squeeze)
Windowing system distributor `The X.Org Foundation', version 11.0.10707000
Configured using:
 `configure '--build' 'x86_64-linux-gnu' '--host' 'x86_64-linux-gnu'
 '--prefix=/usr' '--sharedstatedir=/var/lib' '--libexecdir=/usr/lib'
 '--localstatedir=/var' '--infodir=/usr/share/info'
 '--mandir=/usr/share/man' '--with-pop=yes'
 
'--enable-locallisppath=/etc/emacs-snapshot:/etc/emacs:/usr/local/share/emacs/24.1.50/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/24.1.50/site-lisp:/usr/share/emacs/site-lisp'
 '--without-compress-info' '--with-crt-dir=/usr/lib//' '--with-x=yes'
 '--with-x-toolkit=gtk' '--with-imagemagick=yes'
 'build_alias=x86_64-linux-gnu' 'host_alias=x86_64-linux-gnu'
 'CFLAGS=-DDEBIAN -DSITELOAD_PURESIZE_EXTRA=5000 -g -O2' 'LDFLAGS=-g
 -Wl,--as-needed -znocombreloc' 'CPPFLAGS=''

Important settings:
  value of $LC_ALL: C
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: de_DE.UTF-8
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: Emacs-Lisp

Minor modes in effect:
  diff-auto-refine-mode: t
  cl-format-font-lock-mode: t
  iswitchb-mode: t
  ispell-track-input-method: t
  recentf-mode: t
  yas/global-mode: t
  yas/minor-mode: t
  workgroups-mode: t
  window-numbering-mode: t
  shell-dirtrack-mode: t
  TeX-PDF-mode: t
  savehist-mode: t
  ekey-mode: t
  eldoc-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
C-n C-n C-n C-x SPC C-x o c <return> s <return> <return> 
<return> C-x b s c <return> C-p C-p C-p C-p C-p C-p 
C-p C-n C-n C-n T h e s SPC DEL DEL SPC l i s t c o 
m p SPC t o k e n SPC i s SPC n o t SPC c p <backspace> 
a p t u r e d SPC b y SPC C-n C-n C-n C-M-b C-M-SPC 
M-w C-p C-p C-p M-m B u t SPC M-l C-f ` M-f ' C-e C-y 
C-M-b ` C-e ' . SPC SPC DEL DEL DEL , SPC r e s u l 
t i n g SPC i n SPC P d <backspace> <backspace> p d 
b SPC a p p e a r i n g M-q SPC t o SPC b e SPC h a 
n g i n g . M-q SPC SPC C-p C-n C-k C-n C-n C-M-b C-M-b 
M-d d e f v a r M-m C-x o C-x b g u <return> C-x b 
C-s C-s <return> C-x o C-n M-m C-M-SPC M-w C-x o C-n 
M-m C-o C-x C-q C-o C-y C-n C-b C-M-b C-M-k M-^ C-e 
M-x d i f f - b u f f <return> <return> C-x o C-x h 
M-w C-x b <return> C-p C-p C-p C-e T h i s SPC m a 
y SPC b e SPC p y t h o n 3 <C-backspace> M-/ C-g C-/ 
C-b 2 / C-e SPC r e a DEL l a t e d C-M-b C-M-b C-M-b 
C-M-b C-M-b ( C-e . ) C-j C-j C-y M-y C-p C-n C-k C-k 
C-M-k C-x h C-w M-x e m a c s - r <backspace> b u g 
<return> C-a r <return>

Recent messages:
call-interactively: Buffer is read-only: #<buffer gud.el.gz>
Mark set
Auto-saving...
Auto-saving gud.el.gz: Opening output file: permission denied, 
/usr/share/emacs/24.1.50/lisp/progmodes/#gud.el.gz#
uncompressing gud.el.gz...done
Mark set [2 times]
No expansion found
Quit
Undo!
Mark set [3 times]

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/home/politza/.emacs.d/plugins/haskell/haskell-hugs hides 
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/home/politza/.emacs.d/plugins/haskell/haskell-site-file hides 
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/home/politza/.emacs.d/plugins/haskell/haskell-cabal hides 
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/home/politza/.emacs.d/plugins/haskell/inf-haskell hides 
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/home/politza/.emacs.d/plugins/haskell/haskell-font-lock hides 
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/home/politza/.emacs.d/plugins/haskell/haskell-simple-indent hides 
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/home/politza/.emacs.d/plugins/haskell/haskell-indentation hides 
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/home/politza/.emacs.d/plugins/python/python/python hides 
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/home/politza/.emacs.d/plugins/predictive/avl-tree hides 
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