--- Begin Message ---
|
Subject: |
24.0.50; expand-abbrev goes into infinite loop |
|
Date: |
Mon, 04 Jul 2011 17:47:36 -0700 |
This bug report will be sent to the Bug-GNU-Emacs mailing list
and the GNU bug tracker at debbugs.gnu.org. Please check that
the From: line contains a valid email address. After a delay of up
to one day, you should receive an acknowledgement at that address.
Please write in English if possible, as the Emacs maintainers
usually do not have translators for other languages.
Please describe exactly what actions triggered the bug, and
the precise symptoms of the bug. If you can, give a recipe
starting from `emacs -Q':
Abbreviation mode seems to be busted, because turning it on results in
emacs going into infinite loop. To see the problem, start emacs-24
(latest bzr version I tested was 104955 dated July 4, 2011) like this
emacs24 -q -l abbrev-bug.el
where the content of abbrev-bug.el is
(setq debug-on-quit t)
;; Load abbrev.el rather than use abbrev.elc, so as to get
;; more useful stack trace.
(load-library "abbrev.el")
(switch-to-buffer "*scratch*")
(abbrev-mode 1)
(insert "a")
(expand-abbrev)
This seems to put emacs into infinite loop, so hit Control-g to take
control which results in the stack trace shown below.
Emacs 24 bzr version 104562 dated June 11, 2011 does not suffer this
problem, so it seems to have been introduced within the past three
weeks between June 11 and July 4.
Debugger entered--Lisp error: (quit)
(and tables (not (symbol-value sym)))
(while (and tables (not (symbol-value sym))) (let* ((table (pop tables))
(case-fold (not (abbrev-table-get table :case-fixed)))) (setq tables (append
(abbrev-table-get table :parents) tables)) (setq sym (or (intern-soft abbrev
table) (when case-fold (let ((sym ...)) (and sym (not ...) sym)))))))
(let ((tables (abbrev--active-tables table)) sym) (while (and tables (not
(symbol-value sym))) (let* ((table (pop tables)) (case-fold (not
(abbrev-table-get table :case-fixed)))) (setq tables (append (abbrev-table-get
table :parents) tables)) (setq sym (or (intern-soft abbrev table) (when
case-fold (let (...) (and sym ... sym))))))) (if (symbol-value sym) sym))
abbrev-symbol(#("a" 0 1 (fontified nil)) [ 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ...])
(let ((abbrev (abbrev-symbol name table))) (when abbrev (setq enable-fun
(abbrev-get abbrev :enable-function)) (and (or (not enable-fun) (funcall
enable-fun)) (list abbrev name start end))))
(and (or (not enable-fun) (funcall enable-fun)) (let ((re (abbrev-table-get
table :regexp))) (if (null re) (let ((lim (point))) (backward-word 1) (setq
start (point)) (forward-word 1) (setq end (min (point) lim))) (when
(looking-back re (line-beginning-position)) (setq start (match-beginning 1))
(setq end (match-end 1))))) (setq name (buffer-substring start end)) (let
((abbrev (abbrev-symbol name table))) (when abbrev (setq enable-fun (abbrev-get
abbrev :enable-function)) (and (or (not enable-fun) (funcall enable-fun)) (list
abbrev name start end)))))
(setq res (and (or (not enable-fun) (funcall enable-fun)) (let ((re
(abbrev-table-get table :regexp))) (if (null re) (let ((lim (point)))
(backward-word 1) (setq start (point)) (forward-word 1) (setq end (min (point)
lim))) (when (looking-back re (line-beginning-position)) (setq start
(match-beginning 1)) (setq end (match-end 1))))) (setq name (buffer-substring
start end)) (let ((abbrev (abbrev-symbol name table))) (when abbrev (setq
enable-fun (abbrev-get abbrev :enable-function)) (and (or (not enable-fun)
(funcall enable-fun)) (list abbrev name start end))))))
(let* ((table (pop tables)) (enable-fun (abbrev-table-get table
:enable-function))) (setq tables (append (abbrev-table-get table :parents)
tables)) (setq res (and (or (not enable-fun) (funcall enable-fun)) (let ((re
(abbrev-table-get table :regexp))) (if (null re) (let ((lim ...))
(backward-word 1) (setq start (point)) (forward-word 1) (setq end (min ...
lim))) (when (looking-back re (line-beginning-position)) (setq start
(match-beginning 1)) (setq end (match-end 1))))) (setq name (buffer-substring
start end)) (let ((abbrev (abbrev-symbol name table))) (when abbrev (setq
enable-fun (abbrev-get abbrev :enable-function)) (and (or (not enable-fun)
(funcall enable-fun)) (list abbrev name start end)))))) (goto-char pos))
(while (and tables (not (car res))) (let* ((table (pop tables)) (enable-fun
(abbrev-table-get table :enable-function))) (setq tables (append
(abbrev-table-get table :parents) tables)) (setq res (and (or (not enable-fun)
(funcall enable-fun)) (let ((re (abbrev-table-get table :regexp))) (if (null
re) (let (...) (backward-word 1) (setq start ...) (forward-word 1) (setq end
...)) (when (looking-back re ...) (setq start ...) (setq end ...)))) (setq name
(buffer-substring start end)) (let ((abbrev (abbrev-symbol name table))) (when
abbrev (setq enable-fun (abbrev-get abbrev :enable-function)) (and (or ... ...)
(list abbrev name start end)))))) (goto-char pos)))
(if abbrev-start-location (progn (setq start abbrev-start-location) (setq
abbrev-start-location nil) (if (and (< start (point-max)) (eq (char-after
start) 45)) (delete-region start (1+ start))) (skip-syntax-backward " ") (setq
end (point)) (when (> end start) (setq name (buffer-substring start end))
(goto-char pos) (list (abbrev-symbol name tables) name start end))) (while (and
tables (not (car res))) (let* ((table (pop tables)) (enable-fun
(abbrev-table-get table :enable-function))) (setq tables (append
(abbrev-table-get table :parents) tables)) (setq res (and (or (not enable-fun)
(funcall enable-fun)) (let ((re ...)) (if (null re) (let ... ... ... ... ...)
(when ... ... ...))) (setq name (buffer-substring start end)) (let ((abbrev
...)) (when abbrev (setq enable-fun ...) (and ... ...))))) (goto-char pos)))
res)
(let ((tables (abbrev--active-tables)) (pos (point)) start end name res) (if
abbrev-start-location (progn (setq start abbrev-start-location) (setq
abbrev-start-location nil) (if (and (< start (point-max)) (eq (char-after
start) 45)) (delete-region start (1+ start))) (skip-syntax-backward " ") (setq
end (point)) (when (> end start) (setq name (buffer-substring start end))
(goto-char pos) (list (abbrev-symbol name tables) name start end))) (while (and
tables (not (car res))) (let* ((table (pop tables)) (enable-fun
(abbrev-table-get table :enable-function))) (setq tables (append
(abbrev-table-get table :parents) tables)) (setq res (and (or (not enable-fun)
(funcall enable-fun)) (let (...) (if ... ... ...)) (setq name (buffer-substring
start end)) (let (...) (when abbrev ... ...)))) (goto-char pos))) res))
abbrev--before-point()
(let* ((--cl-rest-- (abbrev--before-point)) (sym (pop --cl-rest--)) (name
(pop --cl-rest--)) (wordstart (pop --cl-rest--)) (wordend (pop --cl-rest--)))
(if --cl-rest-- (signal (quote wrong-number-of-arguments) (list nil (+ 4
(length --cl-rest--))))) (when sym (unless (or noninteractive
(window-minibuffer-p (selected-window))) (undo-boundary)) (setq
last-abbrev-text name) (setq last-abbrev sym) (setq last-abbrev-location
wordstart) (abbrev-insert sym name wordstart wordend)))
(progn (let* ((--cl-rest-- (abbrev--before-point)) (sym (pop --cl-rest--))
(name (pop --cl-rest--)) (wordstart (pop --cl-rest--)) (wordend (pop
--cl-rest--))) (if --cl-rest-- (signal (quote wrong-number-of-arguments) (list
nil (+ 4 (length --cl-rest--))))) (when sym (unless (or noninteractive
(window-minibuffer-p (selected-window))) (undo-boundary)) (setq
last-abbrev-text name) (setq last-abbrev sym) (setq last-abbrev-location
wordstart) (abbrev-insert sym name wordstart wordend))))
(destructuring-bind (&optional sym name wordstart wordend)
(abbrev--before-point) (when sym (unless (or noninteractive
(window-minibuffer-p (selected-window))) (undo-boundary)) (setq
last-abbrev-text name) (setq last-abbrev sym) (setq last-abbrev-location
wordstart) (abbrev-insert sym name wordstart wordend)))
(closure ((args) (global) (funs) (runrestofhook closure (#2 t) (funs global
args) (if (consp funs) (if (eq t (car funs)) (funcall runrestofhook (append
global (cdr funs)) nil args) (apply (car funs) (apply-partially (lambda ...
...) (cdr funs) global) args)) (apply (lambda nil (destructuring-bind
(&optional sym name wordstart wordend) (abbrev--before-point) (when sym ... ...
... ... ...))) args))) t) nil (destructuring-bind (&optional sym name wordstart
wordend) (abbrev--before-point) (when sym (unless (or noninteractive
(window-minibuffer-p (selected-window))) (undo-boundary)) (setq
last-abbrev-text name) (setq last-abbrev sym) (setq last-abbrev-location
wordstart) (abbrev-insert sym name wordstart wordend))))()
apply((closure ((args) (global) (funs) (runrestofhook closure (#2 t) (funs
global args) (if (consp funs) (if (eq t (car funs)) (funcall runrestofhook
(append global (cdr funs)) nil args) (apply (car funs) (apply-partially (lambda
... ...) (cdr funs) global) args)) (apply (lambda nil (destructuring-bind
(&optional sym name wordstart wordend) (abbrev--before-point) (when sym ... ...
... ... ...))) args))) t) nil (destructuring-bind (&optional sym name wordstart
wordend) (abbrev--before-point) (when sym (unless (or noninteractive
(window-minibuffer-p (selected-window))) (undo-boundary)) (setq
last-abbrev-text name) (setq last-abbrev sym) (setq last-abbrev-location
wordstart) (abbrev-insert sym name wordstart wordend)))) nil)
(if (consp funs) (if (eq t (car funs)) (funcall runrestofhook (append global
(cdr funs)) nil args) (apply (car funs) (apply-partially (lambda (funs global
&rest args) (funcall runrestofhook funs global args)) (cdr funs) global) args))
(apply (lambda nil (destructuring-bind (&optional sym name wordstart wordend)
(abbrev--before-point) (when sym (unless (or noninteractive
(window-minibuffer-p ...)) (undo-boundary)) (setq last-abbrev-text name) (setq
last-abbrev sym) (setq last-abbrev-location wordstart) (abbrev-insert sym name
wordstart wordend)))) args))
(closure ((runrestofhook closure #1 (funs global args) (if (consp funs) (if
(eq t (car funs)) (funcall runrestofhook (append global (cdr funs)) nil args)
(apply (car funs) (apply-partially (lambda ... ...) (cdr funs) global) args))
(apply (lambda nil (destructuring-bind (&optional sym name wordstart wordend)
(abbrev--before-point) (when sym ... ... ... ... ...))) args))) t) (funs global
args) (if (consp funs) (if (eq t (car funs)) (funcall runrestofhook (append
global (cdr funs)) nil args) (apply (car funs) (apply-partially (lambda (funs
global &rest args) (funcall runrestofhook funs global args)) (cdr funs) global)
args)) (apply (lambda nil (destructuring-bind (&optional sym name wordstart
wordend) (abbrev--before-point) (when sym (unless (or noninteractive ...)
(undo-boundary)) (setq last-abbrev-text name) (setq last-abbrev sym) (setq
last-abbrev-location wordstart) (abbrev-insert sym name wordstart wordend))))
args)))(nil nil nil)
funcall((closure ((runrestofhook closure #1 (funs global args) (if (consp
funs) (if (eq t (car funs)) (funcall runrestofhook (append global (cdr funs))
nil args) (apply (car funs) (apply-partially (lambda ... ...) (cdr funs)
global) args)) (apply (lambda nil (destructuring-bind (&optional sym name
wordstart wordend) (abbrev--before-point) (when sym ... ... ... ... ...)))
args))) t) (funs global args) (if (consp funs) (if (eq t (car funs)) (funcall
runrestofhook (append global (cdr funs)) nil args) (apply (car funs)
(apply-partially (lambda (funs global &rest args) (funcall runrestofhook funs
global args)) (cdr funs) global) args)) (apply (lambda nil (destructuring-bind
(&optional sym name wordstart wordend) (abbrev--before-point) (when sym (unless
(or noninteractive ...) (undo-boundary)) (setq last-abbrev-text name) (setq
last-abbrev sym) (setq last-abbrev-location wordstart) (abbrev-insert sym name
wordstart wordend)))) args))) nil nil nil)
(let (runrestofhook) (setq runrestofhook (lambda (funs global args) (if
(consp funs) (if (eq t (car funs)) (funcall runrestofhook (append global (cdr
funs)) nil args) (apply (car funs) (apply-partially (lambda ... ...) (cdr funs)
global) args)) (apply (lambda nil (destructuring-bind (&optional sym name
wordstart wordend) (abbrev--before-point) (when sym ... ... ... ... ...)))
args)))) (funcall runrestofhook abbrev-expand-functions (if (local-variable-p
(quote abbrev-expand-functions)) (default-value (quote
abbrev-expand-functions))) (list)))
(letrec ((runrestofhook (lambda (funs global args) (if (consp funs) (if (eq t
(car funs)) (funcall runrestofhook (append global ...) nil args) (apply (car
funs) (apply-partially ... ... global) args)) (apply (lambda nil
(destructuring-bind ... ... ...)) args))))) (funcall runrestofhook
abbrev-expand-functions (if (local-variable-p (quote abbrev-expand-functions))
(default-value (quote abbrev-expand-functions))) (list)))
(with-wrapper-hook abbrev-expand-functions nil (destructuring-bind (&optional
sym name wordstart wordend) (abbrev--before-point) (when sym (unless (or
noninteractive (window-minibuffer-p (selected-window))) (undo-boundary)) (setq
last-abbrev-text name) (setq last-abbrev sym) (setq last-abbrev-location
wordstart) (abbrev-insert sym name wordstart wordend))))
expand-abbrev()
eval-buffer(#<buffer *load*> nil "/home/kimr/.emacs24-abbrev-bug" nil t) ;
Reading at buffer position 215
load-with-code-conversion("/home/kimr/.emacs24-abbrev-bug"
"/home/kimr/.emacs24-abbrev-bug" nil t)
load("/home/kimr/.emacs24-abbrev-bug" nil t)
command-line-1(("-l" "/home/kimr/.emacs24-abbrev-bug"))
command-line()
normal-top-level()
If Emacs crashed, and you have the Emacs process in the gdb debugger,
please include the output from the following gdb commands:
`bt full' and `xbacktrace'.
For information about debugging Emacs, please read the file
/home/kimr/src/emacs-bzr/trunk_20110704/etc/DEBUG.
In GNU Emacs 24.0.50.1 (i686-pc-linux-gnu, GTK+ Version 2.24.4)
of 2011-07-04 on kimr-laptop
Windowing system distributor `The X.Org Foundation', version 11.0.11001000
Important settings:
value of $LC_ALL: nil
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: en_US.UTF-8
value of $XMODIFIERS: nil
locale-coding-system: utf-8-unix
default enable-multibyte-characters: t
Major mode: Debugger
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:
ESC < C-x 1 <help-echo> ESC x r e p o r t - SPC <tab>
<return>
Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
Loading /u/kimr/src/emacs-bzr/emacs24_latest/lisp/abbrev.el (source)...done
Entering debugger...
Mark set
Load-path shadows:
None found.
Features:
(shadow sort gnus-util mail-extr message sendmail regexp-opt format-spec
rfc822 mml mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231
rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mailabbrev mail-utils
gmm-utils mailheader emacsbug help-mode easymenu view debug easy-mmode
cl time-date tooltip ediff-hook vc-hooks lisp-float-type mwheel x-win
x-dnd tool-bar dnd fontset image fringe 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)
--- End Message ---
--- Begin Message ---
|
Subject: |
Re: bug#8998: further analysis of the problem |
|
Date: |
Tue, 05 Jul 2011 21:09:39 -0400 |
|
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux) |
> Yes, it does the solve the problem. Thanks.
Great, thanks,
Stefan
--- End Message ---