GNU bug report logs - #49001
28.0.50; MML grinds on empty url tags

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: dick <dick.r.chiang <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 28.0.50; MML grinds on empty url tags
Date: Sun, 13 Jun 2021 08:27:11 -0400

[Message part 1 (text/plain, inline)]

# Some new spyware images at github bog MML parsing
src/emacs -Q --batch -l ./mml.el

[mml.el (application/emacs-lisp, attachment)]

[Message part 3 (text/plain, inline)]

Proposed patch:

[0001-Some-kind-of-spyware-is-bogging-my-gnus.patch (text/x-diff, attachment)]

[Message part 5 (text/plain, inline)]

In GNU Emacs 28.0.50 (build 3, x86_64-pc-linux-gnu, GTK+ Version 3.22.30, cairo version 1.15.10)
 of 2021-06-12 built on dick
Repository revision: 0d87fdc56f9378fdf24faf1966a8d9fe70f26d42
Repository branch: gnus-dev-28
Windowing system distributor 'The X.Org Foundation', version 11.0.11906000
System Description: Ubuntu 18.04.4 LTS

Configured using:
 'configure --prefix=/home/dick/.local'

Configured features:
CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GSETTINGS HARFBUZZ JPEG JSON LCMS2
LIBSELINUX LIBXML2 MODULES NOTIFY INOTIFY PDUMPER PNG RSVG SECCOMP SOUND
THREADS TIFF TOOLKIT_SCROLL_BARS X11 XDBE XIM XPM GTK3 ZLIB

Important settings:
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix

Major mode: Magit

Minor modes in effect:
  async-bytecomp-package-mode: t
  global-git-commit-mode: t
  magit-auto-revert-mode: t
  show-paren-mode: t
  projectile-mode: t
  flx-ido-mode: t
  override-global-mode: t
  shell-dirtrack-mode: t
  beacon-mode: t
  global-hl-line-mode: t
  winner-mode: t
  tooltip-mode: t
  mouse-wheel-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
  buffer-read-only: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t

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/home/dick/.emacs.d/elpa/org-9.4.5/ox-icalendar hides /home/dick/.local/share/emacs/28.0.50/lisp/org/ox-icalendar
/home/dick/.emacs.d/elpa/org-9.4.5/ob-processing hides /home/dick/.local/share/emacs/28.0.50/lisp/org/ob-processing
/home/dick/.emacs.d/elpa/org-9.4.5/ob-ledger hides /home/dick/.local/share/emacs/28.0.50/lisp/org/ob-ledger
/home/dick/.emacs.d/elpa/org-9.4.5/org-id hides /home/dick/.local/share/emacs/28.0.50/lisp/org/org-id
/home/dick/.emacs.d/elpa/org-9.4.5/ox-org hides /home/dick/.local/share/emacs/28.0.50/lisp/org/ox-org
/home/dick/.emacs.d/elpa/org-9.4.5/ob-lob hides /home/dick/.local/share/emacs/28.0.50/lisp/org/ob-lob
/home/dick/.emacs.d/elpa/org-9.4.5/ob-latex hides /home/dick/.local/share/emacs/28.0.50/lisp/org/ob-latex
/home/dick/.emacs.d/elpa/org-9.4.5/ol-w3m hides /home/dick/.local/share/emacs/28.0.50/lisp/org/ol-w3m
/home/dick/.emacs.d/elpa/org-9.4.5/org-timer hides /home/dick/.local/share/emacs/28.0.50/lisp/org/org-timer
/home/dick/.emacs.d/elpa/org-9.4.5/ob-makefile hides /home/dick/.local/share/emacs/28.0.50/lisp/org/ob-makefile
/home/dick/.emacs.d/elpa/org-9.4.5/ob-lilypond hides /home/dick/.local/share/emacs/28.0.50/lisp/org/ob-lilypond
/home/dick/.emacs.d/elpa/org-9.4.5/ox-texinfo hides /home/dick/.local/share/emacs/28.0.50/lisp/org/ox-texinfo
/home/dick/.emacs.d/elpa/org-9.4.5/ob-sass hides /home/dick/.local/share/emacs/28.0.50/lisp/org/ob-sass
/home/dick/.emacs.d/elpa/org-9.4.5/org-mouse hides /home/dick/.local/share/emacs/28.0.50/lisp/org/org-mouse
/home/dick/.emacs.d/elpa/org-9.4.5/org-version hides /home/dick/.local/share/emacs/28.0.50/lisp/org/org-version
/home/dick/.emacs.d/elpa/hierarchy-20171221.1151/hierarchy hides /home/dick/.local/share/emacs/28.0.50/lisp/emacs-lisp/hierarchy

Features:
(shadow sort flyspell ispell footnote mail-extr gnus-msg emacsbug cl-print
edebug backtrace qp gnutls network-stream url-http nsm pulse emms-source-file
locate url-about url-auth url-cache url-dired url-gw bug-reference
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magit-branch magit-reset magit-files magit-refs magit-status magit magit-repos
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log-edit pcvs-util add-log magit-core magit-autorevert magit-margin
magit-transient magit-process with-editor server magit-mode transient
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mu4e-view-common mu4e-headers mu4e-compose mu4e-context mu4e-draft
mu4e-actions rfc2368 smtpmail sendmail mu4e-mark mu4e-proc mu4e-utils doc-view
jka-compr image-mode exif mu4e-lists mu4e-message flow-fill org-tempo tempo
org org-macro org-footnote org-pcomplete org-list org-faces org-entities
org-version ob-R ob-emacs-lisp ob-ein ein-cell ein-output-area ein-kernel
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haskell-ghc-support etags fileloop generator dabbrev haskell-customize hydra
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ess-r-flymake flymake-proc flymake warnings thingatpt ess-r-xref xref ess-trns
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format-spec ess-tracebug ess ess-utils ess-custom compile text-property-search
comint ansi-color emms-player-mplayer emms-player-simple emms emms-compat
cl-extra help-mode use-package-core derived beacon easy-mmode pcase hl-line
winner ring edmacro kmacro finder-inf json-reformat-autoloads
json-snatcher-autoloads sml-mode-autoloads tornado-template-mode-autoloads
info package browse-url url url-proxy url-privacy url-expand url-methods
url-history url-cookie url-domsuf url-util mailcap url-handlers url-parse
auth-source cl-seq eieio eieio-core cl-macs eieio-loaddefs password-cache json
subr-x map url-vars seq byte-opt gv bytecomp byte-compile cconv cl-loaddefs
cl-lib iso-transl tooltip eldoc electric uniquify ediff-hook vc-hooks
lisp-float-type mwheel term/x-win x-win term/common-win x-dnd tool-bar dnd
fontset image regexp-opt fringe tabulated-list replace newcomment text-mode
elisp-mode lisp-mode prog-mode register page tab-bar menu-bar rfn-eshadow
isearch easymenu timer select scroll-bar mouse jit-lock font-lock syntax
font-core term/tty-colors frame minibuffer cl-generic cham georgian utf-8-lang
misc-lang vietnamese tibetan thai tai-viet lao korean japanese eucjp-ms
cp51932 hebrew greek romanian slovak czech european ethiopic indian cyrillic
chinese composite charscript charprop case-table epa-hook jka-cmpr-hook help
simple abbrev obarray cl-preloaded nadvice button loaddefs faces cus-face
macroexp files window text-properties overlay sha1 md5 base64 format env
code-pages mule custom widget hashtable-print-readable backquote threads
dbusbind inotify lcms2 dynamic-setting system-font-setting font-render-setting
cairo move-toolbar gtk x-toolkit x multi-tty make-network-process emacs)

Memory information:
((conses 16 1093619 118147)
 (symbols 48 48919 3)
 (strings 32 171970 35916)
 (string-bytes 1 5843596)
 (vectors 16 93020)
 (vector-slots 8 2540166 221561)
 (floats 8 582 1112)
 (intervals 56 5901 3435)
 (buffers 992 26))

Message #8 received at 49001 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: dick <dick.r.chiang <at> gmail.com>
Cc: 49001 <at> debbugs.gnu.org
Subject: Re: bug#49001: 28.0.50; MML grinds on empty url tags
Date: Sun, 13 Jun 2021 14:42:10 +0200

dick <dick.r.chiang <at> gmail.com> writes:

> # Some new spyware images at github bog MML parsing
> src/emacs -Q --batch -l ./mml.el

[...]

> Proposed patch:
>
>>From adf34a8954b0aa86b1769b2b1fd0e117f9c38afb Mon Sep 17 00:00:00 2001
> From: dickmao <none>
> Date: Sun, 13 Jun 2021 08:20:29 -0400
> Subject: [PATCH] Some kind of spyware is bogging my gnus
>
> * lisp/gnus/mml.el (mml-expand-html-into-multipart-related):
> Avoid parsing null or empty string url tags.

Your test case doesn't seem to call
`mml-expand-html-into-multipart-related' -- did you send the wrong test
or the wrong patch or a missing explanation?

>  	    (when (and (null (url-type parsed))
> -		       (url-filename parsed)
> +                       (not (zerop (length (url-filename parsed))))

But I think this looks like the right thing.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

Message #13 received at 49001 <at> debbugs.gnu.org (full text, mbox):

From: dick <dick.r.chiang <at> gmail.com>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: 49001 <at> debbugs.gnu.org
Subject: Re: bug#49001: 28.0.50; MML grinds on empty url tags
Date: Sun, 13 Jun 2021 08:55:48 -0400

LI> Your test case doesn't seem to call
LI> `mml-expand-html-into-multipart-related'

I couldn't for the life of me figure out how to go from MML to shr-rendered
html.  MML and MIME are both gibberish to this pattern matching monkey.

Message #16 received at 49001 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: dick <dick.r.chiang <at> gmail.com>
Cc: 49001 <at> debbugs.gnu.org
Subject: Re: bug#49001: 28.0.50; MML grinds on empty url tags
Date: Sun, 13 Jun 2021 15:00:09 +0200

dick <dick.r.chiang <at> gmail.com> writes:

> LI> Your test case doesn't seem to call
> LI> `mml-expand-html-into-multipart-related'
>
> I couldn't for the life of me figure out how to go from MML to shr-rendered
> html.  MML and MIME are both gibberish to this pattern matching monkey.

So the test case had nothing to do with the patch?  Check.

The patch looks "obviously correct", though, so I've applied it to Emacs
28.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

Message #21 received at 49001 <at> debbugs.gnu.org (full text, mbox):

From: dick.r.chiang <at> gmail.com
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: 49001 <at> debbugs.gnu.org
Subject: Re: bug#49001: 28.0.50; MML grinds on empty url tags
Date: Sun, 13 Jun 2021 09:23:43 -0400

>>>>> Lars Ingebrigtsen <larsi <at> gnus.org> writes:

> So the test case had nothing to do with the patch?  Check.

The test case terminates with the patch, and doesn't without the patch.

If that's not what you saw, then all bets are off.

Message #24 received at 49001 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: dick.r.chiang <at> gmail.com
Cc: 49001 <at> debbugs.gnu.org
Subject: Re: bug#49001: 28.0.50; MML grinds on empty url tags
Date: Sun, 13 Jun 2021 15:35:49 +0200

dick.r.chiang <at> gmail.com writes:

> The test case terminates with the patch, and doesn't without the patch.

Like I said, the test case doesn't call the patched function at all (for
me).

And the test case didn't infloop either before or after the patch.

Perhaps the web page serves out something different for you than for me?

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

Message #27 received at 49001 <at> debbugs.gnu.org (full text, mbox):

From: dick.r.chiang <at> gmail.com
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: 49001 <at> debbugs.gnu.org
Subject: Re: bug#49001: 28.0.50; MML grinds on empty url tags
Date: Sun, 13 Jun 2021 09:58:42 -0400

LI> Like I said, the test case doesn't call the patched function at all (for
LI> me).

message-encode-message-body
-> mml-generate-mime calls
-> mml-expand-all-html-into-multipart-related calls
-> mml-expand-html-into-multipart-related

Perhaps your emacs is not `(fboundp 'libxml-parse-html-region)`.

Message #30 received at 49001 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: dick.r.chiang <at> gmail.com
Cc: 49001 <at> debbugs.gnu.org
Subject: Re: bug#49001: 28.0.50; MML grinds on empty url tags
Date: Mon, 14 Jun 2021 14:40:15 +0200

dick.r.chiang <at> gmail.com writes:

> LI> Like I said, the test case doesn't call the patched function at all (for
> LI> me).
>
> message-encode-message-body
> -> mml-generate-mime calls
> -> mml-expand-all-html-into-multipart-related calls
> -> mml-expand-html-into-multipart-related

Hm, so it does -- when I use "emacs -Q".  I must have something
somewhere in my .emacs that redefines something in this area.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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