bug#13096: Gnus problem with gnus-summary-refer-parent-article

[nyc4bos]

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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':

Hi,

There appears to be a problem with Gnus and gnus-summary-refer-parent-article

When I type "^" (gnus-summary-refer-parent-article) I get the error:

   Wrong type argument: stringp, nil

If I type the same key, ^, immediately after, I either get the parent
article (as originally expected) or I get the error:

        No such function: nnregistry-request-group

I set `toggle-debug-on-error' and see in the *Messages* buffer:


while: No such function: nnregistry-request-group
Entering debugger...
Mark set [2 times]
No references in article -4
utf7-encode: Wrong type argument: stringp, nil

Not sure why the first time pressing the key ^ on an article in the
*Summary* buffer always fails and the second time either succeed to
retrieve the parent article or gives me the
"No such function: nnregistry-request-group" error.


Here is the backtrace:

Debugger entered--Lisp error: (error "No such function: 
nnregistry-request-group")
  signal(error ("No such function: nnregistry-request-group"))
  (while t (signal (quote error) (list (apply (quote format) args))))
  error("No such function: %s" nnregistry-request-group)
  gnus-request-group("nnimap+aol:INBOX" t)
  gnus-check-group-server()
  gnus-request-article-this-buffer(-4 "nnimap+aol:INBOX")
  gnus-article-prepare(-4 nil)
  (if gnus-summary-display-article-function (funcall 
gnus-summary-display-article-function article all-header) (gnus-article-prepare 
article all-header))
  (prog1 (if gnus-summary-display-article-function (funcall 
gnus-summary-display-article-function article all-header) (gnus-article-prepare 
article all-header)) (gnus-run-hooks (quote gnus-select-article-hook)) (if (and 
gnus-current-article (not (zerop gnus-current-article))) (progn 
(gnus-summary-goto-subject gnus-current-article))) (gnus-summary-recenter) (if 
(and gnus-use-trees gnus-show-threads) (progn (gnus-possibly-generate-tree 
article) (gnus-highlight-selected-tree article))) 
(gnus-article-set-window-start (cdr (assq article gnus-newsgroup-bookmarks))))
  (if (null article) nil (prog1 (if gnus-summary-display-article-function 
(funcall gnus-summary-display-article-function article all-header) 
(gnus-article-prepare article all-header)) (gnus-run-hooks (quote 
gnus-select-article-hook)) (if (and gnus-current-article (not (zerop 
gnus-current-article))) (progn (gnus-summary-goto-subject 
gnus-current-article))) (gnus-summary-recenter) (if (and gnus-use-trees 
gnus-show-threads) (progn (gnus-possibly-generate-tree article) 
(gnus-highlight-selected-tree article))) (gnus-article-set-window-start (cdr 
(assq article gnus-newsgroup-bookmarks)))))
  gnus-summary-display-article(-4 nil)
  (progn (gnus-summary-display-article article all-headers) (if 
(gnus-buffer-live-p gnus-article-buffer) (progn (save-current-buffer 
(set-buffer gnus-article-buffer) (if (not gnus-article-decoded-p) 
(mm-disable-multibyte))))) (gnus-article-set-window-start (cdr (assq article 
gnus-newsgroup-bookmarks))) article)
  (if (or (and gnus-single-article-buffer (or (null gnus-current-article) (null 
gnus-article-current) (null (get-buffer gnus-article-buffer)) (not (eq article 
(cdr gnus-article-current))) (not (equal (car gnus-article-current) 
gnus-newsgroup-name)) (not (get-buffer gnus-original-article-buffer)))) (and 
(not gnus-single-article-buffer) (or (null gnus-current-article) (not 
(get-buffer gnus-original-article-buffer)) (not (eq gnus-current-article 
article)))) force) (progn (gnus-summary-display-article article all-headers) 
(if (gnus-buffer-live-p gnus-article-buffer) (progn (save-current-buffer 
(set-buffer gnus-article-buffer) (if (not gnus-article-decoded-p) 
(mm-disable-multibyte))))) (gnus-article-set-window-start (cdr (assq article 
gnus-newsgroup-bookmarks))) article) (quote old))
  (save-current-buffer (set-buffer gnus-summary-buffer) (if (or (and 
gnus-single-article-buffer (or (null gnus-current-article) (null 
gnus-article-current) (null (get-buffer gnus-article-buffer)) (not (eq article 
(cdr gnus-article-current))) (not (equal (car gnus-article-current) 
gnus-newsgroup-name)) (not (get-buffer gnus-original-article-buffer)))) (and 
(not gnus-single-article-buffer) (or (null gnus-current-article) (not 
(get-buffer gnus-original-article-buffer)) (not (eq gnus-current-article 
article)))) force) (progn (gnus-summary-display-article article all-headers) 
(if (gnus-buffer-live-p gnus-article-buffer) (progn (save-current-buffer 
(set-buffer gnus-article-buffer) (if (not gnus-article-decoded-p) 
(mm-disable-multibyte))))) (gnus-article-set-window-start (cdr (assq article 
gnus-newsgroup-bookmarks))) article) (quote old)))
  (let ((article (or article (progn (let ((to ...)) (and to 
(gnus-summary-goto-subject to))) (or (get-text-property (point) (quote 
gnus-number)) (gnus-summary-last-subject))))) (all-headers (not (not 
all-headers))) gnus-summary-display-article-function) (and (not pseudo) 
(gnus-summary-article-pseudo-p article) (error "This is a pseudo-article")) 
(save-current-buffer (set-buffer gnus-summary-buffer) (if (or (and 
gnus-single-article-buffer (or (null gnus-current-article) (null 
gnus-article-current) (null (get-buffer gnus-article-buffer)) (not (eq article 
...)) (not (equal ... gnus-newsgroup-name)) (not (get-buffer 
gnus-original-article-buffer)))) (and (not gnus-single-article-buffer) (or 
(null gnus-current-article) (not (get-buffer gnus-original-article-buffer)) 
(not (eq gnus-current-article article)))) force) (progn 
(gnus-summary-display-article article all-headers) (if (gnus-buffer-live-p 
gnus-article-buffer) (progn (save-current-buffer (set-buffer 
gnus-article-buffer) (if ... ...)))) (gnus-article-set-window-start (cdr (assq 
article gnus-newsgroup-bookmarks))) article) (quote old))))
  gnus-summary-select-article(nil nil nil -4)
  (progn (gnus-summary-select-article nil nil nil number) (throw (quote found) 
t))
  (if (and (gnus-check-server gnus-override-method) (setq number 
(gnus-summary-insert-subject message-id))) (progn (gnus-summary-select-article 
nil nil nil number) (throw (quote found) t)))
  (while --dolist-tail-- (setq gnus-override-method (car --dolist-tail--)) (if 
(and (gnus-check-server gnus-override-method) (setq number 
(gnus-summary-insert-subject message-id))) (progn (gnus-summary-select-article 
nil nil nil number) (throw (quote found) t))) (setq --dolist-tail-- (cdr 
--dolist-tail--)))
  (let ((--dolist-tail-- (gnus-refer-article-methods)) gnus-override-method) 
(while --dolist-tail-- (setq gnus-override-method (car --dolist-tail--)) (if 
(and (gnus-check-server gnus-override-method) (setq number 
(gnus-summary-insert-subject message-id))) (progn (gnus-summary-select-article 
nil nil nil number) (throw (quote found) t))) (setq --dolist-tail-- (cdr 
--dolist-tail--))))
  (progn (let ((--dolist-tail-- (gnus-refer-article-methods)) 
gnus-override-method) (while --dolist-tail-- (setq gnus-override-method (car 
--dolist-tail--)) (if (and (gnus-check-server gnus-override-method) (setq 
number (gnus-summary-insert-subject message-id))) (progn 
(gnus-summary-select-article nil nil nil number) (throw (quote found) t))) 
(setq --dolist-tail-- (cdr --dolist-tail--)))))
  (catch (quote found) (progn (let ((--dolist-tail-- 
(gnus-refer-article-methods)) gnus-override-method) (while --dolist-tail-- 
(setq gnus-override-method (car --dolist-tail--)) (if (and (gnus-check-server 
gnus-override-method) (setq number (gnus-summary-insert-subject message-id))) 
(progn (gnus-summary-select-article nil nil nil number) (throw (quote found) 
t))) (setq --dolist-tail-- (cdr --dolist-tail--))))) (gnus-message 3 "Couldn't 
fetch article %s" message-id))
  (cond ((and header (or (not (memq (aref header 0) gnus-newsgroup-sparse)) 
sparse)) (prog1 (gnus-summary-goto-article (aref header 0) nil t) (if sparse 
(progn (gnus-summary-update-article (aref header 0)))))) (t (catch (quote 
found) (progn (let ((--dolist-tail-- (gnus-refer-article-methods)) 
gnus-override-method) (while --dolist-tail-- (setq gnus-override-method (car 
--dolist-tail--)) (if (and ... ...) (progn ... ...)) (setq --dolist-tail-- (cdr 
--dolist-tail--))))) (gnus-message 3 "Couldn't fetch article %s" message-id))))
  (let* ((header (gnus-id-to-header message-id)) (sparse (and header (memq 
(aref header 0) gnus-newsgroup-sparse) (memq (aref header 0) 
gnus-newsgroup-limit))) number) (cond ((and header (or (not (memq (aref header 
0) gnus-newsgroup-sparse)) sparse)) (prog1 (gnus-summary-goto-article (aref 
header 0) nil t) (if sparse (progn (gnus-summary-update-article (aref header 
0)))))) (t (catch (quote found) (progn (let ((--dolist-tail-- ...) 
gnus-override-method) (while --dolist-tail-- (setq gnus-override-method ...) 
(if ... ...) (setq --dolist-tail-- ...)))) (gnus-message 3 "Couldn't fetch 
article %s" message-id)))))
  (progn (setq message-id (gnus-replace-in-string message-id " " "")) (if 
(string-match "^<" message-id) nil (setq message-id (concat "<" message-id))) 
(if (string-match ">$" message-id) nil (setq message-id (concat message-id 
">"))) (if (string-match "@" message-id) nil (setq message-id 
(gnus-url-unhex-string message-id))) (let* ((header (gnus-id-to-header 
message-id)) (sparse (and header (memq (aref header 0) gnus-newsgroup-sparse) 
(memq (aref header 0) gnus-newsgroup-limit))) number) (cond ((and header (or 
(not (memq ... gnus-newsgroup-sparse)) sparse)) (prog1 
(gnus-summary-goto-article (aref header 0) nil t) (if sparse (progn 
(gnus-summary-update-article ...))))) (t (catch (quote found) (progn (let (... 
gnus-override-method) (while --dolist-tail-- ... ... ...))) (gnus-message 3 
"Couldn't fetch article %s" message-id))))))
  (if (and (stringp message-id) (not (zerop (length message-id)))) (progn (setq 
message-id (gnus-replace-in-string message-id " " "")) (if (string-match "^<" 
message-id) nil (setq message-id (concat "<" message-id))) (if (string-match 
">$" message-id) nil (setq message-id (concat message-id ">"))) (if 
(string-match "@" message-id) nil (setq message-id (gnus-url-unhex-string 
message-id))) (let* ((header (gnus-id-to-header message-id)) (sparse (and 
header (memq (aref header 0) gnus-newsgroup-sparse) (memq (aref header 0) 
gnus-newsgroup-limit))) number) (cond ((and header (or (not ...) sparse)) 
(prog1 (gnus-summary-goto-article (aref header 0) nil t) (if sparse (progn 
...)))) (t (catch (quote found) (progn (let ... ...)) (gnus-message 3 "Couldn't 
fetch article %s" message-id)))))))
  gnus-summary-refer-article("<84zk2vxulq.fsf@aol.com>")
  (if (gnus-summary-refer-article (gnus-parent-id ref skip)) nil (gnus-message 
1 "Couldn't find parent"))
  (if (and ref (not (equal ref ""))) (if (gnus-summary-refer-article 
(gnus-parent-id ref skip)) nil (gnus-message 1 "Couldn't find parent")) 
(gnus-message 1 "No references in article %d" (progn (let ((to 
(get-text-property (point) (quote gnus-intangible)))) (and to 
(gnus-summary-goto-subject to))) (or (get-text-property (point) (quote 
gnus-number)) (gnus-summary-last-subject)))) (setq error t))
  (while (and (> n 0) (not error)) (setq header (nth 3 (assq (progn (let ((to 
...)) (and to (gnus-summary-goto-subject to))) (or (get-text-property (point) 
(quote gnus-number)) (gnus-summary-last-subject))) gnus-newsgroup-data))) (if 
(and (eq (aref header 0) (cdr gnus-article-current)) (equal gnus-newsgroup-name 
(car gnus-article-current))) (save-current-buffer (set-buffer 
gnus-original-article-buffer) (nnheader-narrow-to-headers) (if (setq ref 
(message-fetch-field "references")) nil (if (setq ref (message-fetch-field 
"in-reply-to")) (progn (setq ref (gnus-extract-message-id-from-in-reply-to 
ref))))) (widen)) (setq ref (aref header 5))) (if (and ref (not (equal ref 
""))) (if (gnus-summary-refer-article (gnus-parent-id ref skip)) nil 
(gnus-message 1 "Couldn't find parent")) (gnus-message 1 "No references in 
article %d" (progn (let ((to (get-text-property ... ...))) (and to 
(gnus-summary-goto-subject to))) (or (get-text-property (point) (quote 
gnus-number)) (gnus-summary-last-subject)))) (setq error t)) (setq n (1- n)))
  (let ((skip 1) error header ref) (if (not (natnump n)) (progn (setq skip (abs 
n) n 1))) (while (and (> n 0) (not error)) (setq header (nth 3 (assq (progn 
(let (...) (and to ...)) (or (get-text-property ... ...) 
(gnus-summary-last-subject))) gnus-newsgroup-data))) (if (and (eq (aref header 
0) (cdr gnus-article-current)) (equal gnus-newsgroup-name (car 
gnus-article-current))) (save-current-buffer (set-buffer 
gnus-original-article-buffer) (nnheader-narrow-to-headers) (if (setq ref 
(message-fetch-field "references")) nil (if (setq ref (message-fetch-field 
"in-reply-to")) (progn (setq ref ...)))) (widen)) (setq ref (aref header 5))) 
(if (and ref (not (equal ref ""))) (if (gnus-summary-refer-article 
(gnus-parent-id ref skip)) nil (gnus-message 1 "Couldn't find parent")) 
(gnus-message 1 "No references in article %d" (progn (let ((to ...)) (and to 
(gnus-summary-goto-subject to))) (or (get-text-property (point) (quote 
gnus-number)) (gnus-summary-last-subject)))) (setq error t)) (setq n (1- n))) 
(gnus-summary-position-point) n)
  gnus-summary-refer-parent-article(1)
  call-interactively(gnus-summary-refer-parent-article nil nil)

Thanks.


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
e:/emacs-24.2.90/etc/DEBUG.


In GNU Emacs 24.2.90.1 (i386-mingw-nt6.1.7601)
 of 2012-12-03 on MS-W7-DANI
Bzr revision: 110985 lekktu@gmail.com-20121203014526-h8k6xh4fk7b2qhc8
Windowing system distributor `Microsoft Corp.', version 6.1.7601
Configured using:
 `configure --with-gcc (4.7) --no-opt --enable-checking --cflags
 -Ic:/emacs/libs/libXpm-3.5.10/include -Ic:/emacs/libs/libXpm-3.5.10/src
 -Ic:/emacs/libs/libpng-1.2.37-lib/include -Ic:/emacs/libs/zlib-1.2.5
 -Ic:/emacs/libs/giflib-4.1.4-1-lib/include
 -Ic:/emacs/libs/jpeg-6b-4-lib/include
 -Ic:/emacs/libs/tiff-3.8.2-1-lib/include
 -Ic:/emacs/libs/libxml2-2.7.8-w32-bin/include/libxml2
 -Ic:/emacs/libs/gnutls-3.0.9-w32-bin/include
 -Ic:/emacs/libs/libiconv-1.9.2-1-lib/include'

Important settings:
  value of $LANG: en_US
  locale-coding-system: cp1252
  default enable-multibyte-characters: t

Major mode: Lisp Interaction

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:
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <menu-bar> <help-menu> <send-emacs-bug
-report>

Recent messages:
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Features:
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mm-util mail-prsvr mail-utils time-date tooltip ediff-hook vc-hooks
lisp-float-type mwheel dos-w32 ls-lisp w32-common-fns disp-table w32-win
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emacs)