pgnus-0.74 - signal in ieft-drums-remove-comments()

pgnus-0.74 - signal in ieft-drums-remove-comments()

[Danny Siu]

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pgnus-0.74 signaled "buffer is read-only: #<buffer "*Article*">"
ieft-drums-remove-comments() which is an alias of
mail-header-remove-comments.

This didn't happen in pgnus-0.56.  The line

  (delete-region (point) (progn (forward-sexp 1) (point)))

in ietf-drums-remove-comments in ietf-drums.el is the cause of the signal.

The debug info, raw article buffer and backtrace are attached.

Is this a known problem?  (for some reason I was removed from the list for 2
weeks and have to re-subscibe it.  so i am still catching up with the latest)

-- 
Danny Dick-Fung Siu        mailto:dsiu@adobe.com
Acrobat Engineering @ Adobe Systems Incorporated
      http://www.csua.berkeley.edu/~dsiu


[-- Attachment #2: backtrace --]
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Signaling: (wrong-type-argument char-or-string-p nil)
  mail-header-remove-comments(nil)
  mail-header-parse-content-type(nil)
  mm-dissect-buffer(t)
  mm-dissect-multipart(("multipart/mixed" (boundary . "=-=-=")))
  mm-dissect-buffer()
  gnus-display-mime()
  gnus-article-prepare-display()
  gnus-article-prepare(14289 nil)
  gnus-summary-display-article(14289)
  gnus-summary-next-page(nil)
  call-interactively(gnus-summary-next-page)

[-- Attachment #3: article buffer --]
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To: ding@gnus.org
Subject: MIME Test One
Mime-Version: 1.0
Content-Type: multipart/mixed; boundary="=-=-="
From: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
Date: 20 Nov 1998 16:38:43 +0100
Message-ID: <m3iugacr24.fsf@sparky.gnus.org>
User-Agent: Gnus/5.070053 (Pterodactyl Gnus v0.53) XEmacs/21.2(beta3) (Aglaia)
X-Face: &w!^oO<W.WBH]FsTP:P0f9X6M-ygaADlA_)eF$<UwQzj7:C=Gi<a?/_4$LX^@$Qq7-O&XHp
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Xref: mcmug GNUS:14289
X-Gnus-Article-Number: 14289   Fri Nov 20 10:43:33 1998

This is a MIME multipart message.  If you are reading
this, you shouldn't.

--=-=-=

This one just tests what happens with simple a multipart/mixed.


--=-=-=
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--=-=-=


So, what happened?

-- 
(domestic pets only, the antidote for overdose, milk.)
  larsi@ifi.uio.no * Lars Magne Ingebrigtsen

--=-=-=--

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Pterodactyl Gnus v0.74
XEmacs 20.4 "Emerald" [Lucid] (sparc-sun-solaris2.4) of Sat Feb 28 1998 on grind
200 enquirer.corp.adobe.com InterNetNews NNRP server INN 1.4 22-Dec-93 ready (posting ok).





------------------ Environment follows ------------------

(setq gnus-select-method
      '(nntp "enquirer"))
(setq gnus-message-archive-method
      '(nnfolder "Archive"
                 (nnfolder-directory "~/Mail/Archive/")
                 (nnfolder-active-file "~/Mail/Archive/.folder-active")
                 (nnfolder-get-new-mail nil)
                 (nnfolder-inhibit-expiry t)))
(setq gnus-message-archive-group
      '((if
            (message-news-p)
            "Sentnews"
          (concat "Sentmail-"
                  (format-time-string "%Y-%m"
                                      (current-time))))))
(setq gnus-secondary-select-methods
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(setq gnus-local-domain "adobe.com")
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        ("^nn.+:"
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(setq nnmail-split-methods
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(setq message-header-setup-hook
      '(gnus-inews-insert-archive-gcc gnus-inews-insert-gcc))
(setq message-cite-function
      'sc-cite-original)

Re: pgnus-0.74 - signal in ieft-drums-remove-comments()

[James H. Cloos Jr.]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Check out the display of the referenced article in gnu emacs with
gnus-treat-display-xface set to t....

(Cf next page for spoiler:)

\f

The ref'ed article has an xface header, but also has a 822 attatchment
which has an xface header.  At least in pgnus-0.73 in emacs 20.3.1, xv
pops up with the first xface, quits w/o user interaction and then pops
up with the second xface.

The xface headers in attatchments probably shouldn't be auto-displayed
unless and until the attachment is viewed, ja?

- -JimC
- -- 
James H. Cloos, Jr.  <http://www.jhcloos.com/cloos/public_key> 1024D/ED7DAEA6 
<cloos@jhcloos.com>     E9E9 F828 61A4 6EA9 0F2B  63E7 997A 9F17 ED7D AEA6
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Re: pgnus-0.74 - signal in ieft-drums-remove-comments()

[Danny Siu]

James H Cloos writes:

  James> Check out the display of the referenced article in gnu emacs with
  James> gnus-treat-display-xface set to t....

  James> (Cf next page for spoiler:)

  James> \f

  James> The ref'ed article has an xface header, but also has a 822
  James> attatchment which has an xface header.  At least in pgnus-0.73 in
  James> emacs 20.3.1, xv pops up with the first xface, quits w/o user
  James> interaction and then pops up with the second xface.

  James> The xface headers in attatchments probably shouldn't be
  James> auto-displayed unless and until the attachment is viewed, ja?

I don't think that is the cause.  ieft-drums-remove-comments() still signals 
when gnus-treat-display-xface is set to t.  Also, I am using xemacs-20.4 so
xv shouldn't pop up with xface.

  James> -JimC -- James H. Cloos, Jr.
  James> <http://www.jhcloos.com/cloos/public_key> 1024D/ED7DAEA6
  James> <cloos@jhcloos.com> E9E9 F828 61A4 6EA9 0F2B 63E7 997A 9F17 ED7D
  James> AEA6

-- 
Danny Dick-Fung Siu        mailto:dsiu@adobe.com
Acrobat Engineering @ Adobe Systems Incorporated
      http://www.csua.berkeley.edu/~dsiu

Re: pgnus-0.74 - signal in ieft-drums-remove-comments()

[Lars Magne Ingebrigtsen]

"James H. Cloos Jr." <cloos@jhcloos.com> writes:

> The ref'ed article has an xface header, but also has a 822 attatchment
> which has an xface header.  At least in pgnus-0.73 in emacs 20.3.1, xv
> pops up with the first xface, quits w/o user interaction and then pops
> up with the second xface.

I think I've located and fixed this bug.  Could you check after
Pterodactyl Gnus v0.75 has been released to see whether things start
working?

-- 
(domestic pets only, the antidote for overdose, milk.)
  larsi@gnus.org * Lars Magne Ingebrigtsen

Re: pgnus-0.74 - signal in ieft-drums-remove-comments()

[Lars Magne Ingebrigtsen]

Danny Siu <dsiu@Adobe.COM> writes:

> Signaling: (wrong-type-argument char-or-string-p nil)
>   mail-header-remove-comments(nil)
>   mail-header-parse-content-type(nil)
>   mm-dissect-buffer(t)

Well, in 0.75 all the calls to `mail-header-parse-content-type' have
`ignore-errors' slapped around them, so I think this is probably fixed 
now. 

-- 
(domestic pets only, the antidote for overdose, milk.)
  larsi@gnus.org * Lars Magne Ingebrigtsen

Re: pgnus-0.74 - signal in ieft-drums-remove-comments()

[James H. Cloos Jr.]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

>>>>> "Lars" == Lars Magne Ingebrigtsen <larsi@gnus.org> writes:

Lars> "James H. Cloos Jr." <cloos@jhcloos.com> writes:
>> The ref'ed article has an xface header, but also has a 822
>> attatchment which has an xface header.  At least in pgnus-0.73 in
>> emacs 20.3.1, xv pops up with the first xface, quits w/o user
>> interaction and then pops up with the second xface.

Lars> I think I've located and fixed this bug.  Could you check after
Lars> Pterodactyl Gnus v0.75 has been released to see whether things
Lars> start working?

Now I get the following:

	*Article* buffer scrolls to the end
	an xv instance pops up with a face
	that xv quits w/o intervention
	the *Article* buffer narrows or widens (can't tell which)
	another xv instance pops up
	xv quits again w/o a keypress
	the *Article* buffer narrows or widens (can't tell which)
	another xv instance pops up
	xv quits again w/o a keypress
	the *Article* buffer scrolls to the top (as normal)
	a fourth xv instance shows up

The 3rd and 4th xv's show the same image (the xface specified in the
`top-level' headers.

The first xv, though, I've discovered is the jpeg image which is
inlined in the attatchment, not the xface in the attachment.  (Said
jpeg is about the same size as an xface, hense my mis-interpretation
of what I was seeing.  I manually viewed each xface and that jpeg just
now, and do not think the attachment's xface is showing up, only its
inlined jpeg....

In short, the rl question is whether an attachment's inlines should be
inlined in the parent message, or only when the attachment is viewed.

PS.  Appologies if this is incoherent; I'm recovering from a touch of
     flu. :(

- -JimC
- -- 
James H. Cloos, Jr.  <http://www.jhcloos.com/cloos/public_key> 1024D/ED7DAEA6 
<cloos@jhcloos.com>     E9E9 F828 61A4 6EA9 0F2B  63E7 997A 9F17 ED7D AEA6
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Re: pgnus-0.74 - signal in ieft-drums-remove-comments()

[Lars Magne Ingebrigtsen]

"James H. Cloos Jr." <cloos@jhcloos.com> writes:

> In short, the rl question is whether an attachment's inlines should be
> inlined in the parent message, or only when the attachment is viewed.

The latter.

Do you have full automatic viewing of everything switched on, by any
chance?  Then the RCF822 part may be "viewed" in a different buffer
that, perhaps, Gnus is not showing you, or something.

-- 
(domestic pets only, the antidote for overdose, milk.)
  larsi@gnus.org * Lars Magne Ingebrigtsen

Re: pgnus-0.74 - signal in ieft-drums-remove-comments()

[James H. Cloos Jr.]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Lars> Do you have full automatic viewing of everything switched on, by
Lars> any chance?  Then the RCF822 part may be "viewed" in a different
Lars> buffer that, perhaps, Gnus is not showing you, or something.

Not by choice, if so. :)

I do have '(global-font-lock-mode t nil (font-lock)) and in my
(custom-set-variables) and font-lock-global-modes is also set to t.
I don't know whether that matters....

- -JimC
- -- 
James H. Cloos, Jr.  <http://www.jhcloos.com/cloos/public_key> 1024D/ED7DAEA6 
<cloos@jhcloos.com>     E9E9 F828 61A4 6EA9 0F2B  63E7 997A 9F17 ED7D AEA6
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Re: pgnus-0.74 - signal in ieft-drums-remove-comments()

[Lars Magne Ingebrigtsen]

"James H. Cloos Jr." <cloos@jhcloos.com> writes:

> Lars> Do you have full automatic viewing of everything switched on, by
> Lars> any chance?  Then the RCF822 part may be "viewed" in a different
> Lars> buffer that, perhaps, Gnus is not showing you, or something.
> 
> Not by choice, if so. :)

By default, images that require an external viewer (like xv) aren't
shown automatically, so that leads me to believe that there's
something customized somewhere.

Er -- you don't use TM, by any chance?

-- 
(domestic pets only, the antidote for overdose, milk.)
  larsi@gnus.org * Lars Magne Ingebrigtsen

Re: pgnus-0.74 - signal in ieft-drums-remove-comments()

[James H. Cloos Jr.]

-----BEGIN PGP SIGNED MESSAGE-----
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Lars> By default, images that require an external viewer (like xv)
Lars> aren't shown automatically, so that leads me to believe that
Lars> there's something customized somewhere.

Lars> Er -- you don't use TM, by any chance?

No.  I did have gnus-treat-display-xface set to t to test it, though.

Yup.  Reading that message w/ gnus-treat-display-xface nil stops the
jpeg from auto-displaying.

- -JimC
- -- 
James H. Cloos, Jr.  <http://www.jhcloos.com/cloos/public_key> 1024D/ED7DAEA6 
<cloos@jhcloos.com>     E9E9 F828 61A4 6EA9 0F2B  63E7 997A 9F17 ED7D AEA6

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Re: pgnus-0.74 - signal in ieft-drums-remove-comments()

[Lars Magne Ingebrigtsen]

"James H. Cloos Jr." <cloos@jhcloos.com> writes:

> No.  I did have gnus-treat-display-xface set to t to test it, though.
> 
> Yup.  Reading that message w/ gnus-treat-display-xface nil stops the
> jpeg from auto-displaying.

I don't understand how `gnus-treat-display-xface' could possibly be
viewing any JPEG things.

What Emacs version are you using, by the way?  Your messages seem to
be going out without a User-Agent header, which is annoying.

-- 
(domestic pets only, the antidote for overdose, milk.)
  larsi@gnus.org * Lars Magne Ingebrigtsen

Re: pgnus-0.74 - signal in ieft-drums-remove-comments()

[James H. Cloos Jr.]

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Lars> I don't understand how `gnus-treat-display-xface' could possibly
Lars> be viewing any JPEG things.

I agree.  Nontheless, it does. 

Lars> What Emacs version are you using, by the way?  Your messages
Lars> seem to be going out without a User-Agent header, which is
Lars> annoying.

(emacs-version) returns:

"GNU Emacs 20.3.1 (i386-redhat-linux, X toolkit)
 of Fri Oct  2 1998 on porky.redhat.com"

And the User-Agent header on a posting I recently made to
gnu.emacs.help reads `Gnus/5.070075 (Pterodactyl Gnus v0.75)
Emacs/20.3'

It has only been about a decade since I've done any real debugging of
elisp, but I'll step through reading that article if someone will
remind me /how/... :*

(BTW: Did I mention I use nnmh for mail?)

- -JimC
- -- 
tJames H. Cloos, Jr.  <http://www.jhcloos.com/cloos/public_key> 1024D/ED7DAEA6 
<cloos@jhcloos.com>     E9E9 F828 61A4 6EA9 0F2B  63E7 997A 9F17 ED7D AEA6
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Re: pgnus-0.74 - signal in ieft-drums-remove-comments()

[Lars Magne Ingebrigtsen]

"James H. Cloos Jr." <cloos@jhcloos.com> writes:

> It has only been about a decade since I've done any real debugging of
> elisp, but I'll step through reading that article if someone will
> remind me /how/... :*

`M-x edebug-defun RET' on `article-display-x-face' in gnus-art.el.

-- 
(domestic pets only, the antidote for overdose, milk.)
  larsi@gnus.org * Lars Magne Ingebrigtsen

Re: pgnus-0.74 - signal in ieft-drums-remove-comments()

[James H. Cloos Jr.]

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OK.  I was not seeing what I thought I was seeing.

Slowing it down by running it in edebug makes it clear.  The same
Xface -- the correct one -- is displayed four times.  Each time,
delete-process is called on the "article-x-face" process before
a new one is started, which explains the flashing xv(1)s.  I'm
still not certain *why* it loops like that.  Seems that

	(when (stringp gnus-article-x-face-command)
	      (setq last t))

doesn't always set last.

But only due to somethign strange in message <yj9679rktir.fsf@adobe.com>.

I wonder whether it has anything to do with the fact that the 3rd body
part is a message/rfc822 but is declared to be text/plain and has name
and filename set to *Article*.  (Incidently, is there a way to bypass
the asterisks-mean-bold behavior while composing a message?)

Anyway, the bug I thought I was seeing isn't there, and what is is
merely cosmetic, and I bet rare as a, err, um, ....  (Well, whatever
it was I was going to write, it is so rare I've forgotten what it is
called. :)   ((And you really don't think I could make up something
like that? Do you?  Well, maybe.  But not this time.  Really.))

- -JimC
- -- 
James H. Cloos, Jr.  <http://www.jhcloos.com/cloos/public_key> 1024D/ED7DAEA6 
<cloos@jhcloos.com>     E9E9 F828 61A4 6EA9 0F2B  63E7 997A 9F17 ED7D AEA6

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Re: pgnus-0.74 - signal in ieft-drums-remove-comments()

[Lars Magne Ingebrigtsen]

"James H. Cloos Jr." <cloos@jhcloos.com> writes:

> Slowing it down by running it in edebug makes it clear.  The same
> Xface -- the correct one -- is displayed four times. 

Hm.  It looks like the function searches the article body as well,
which it shouldn't do.  Fix in Pterodactyl Gnus v0.76.

-- 
(domestic pets only, the antidote for overdose, milk.)
  larsi@gnus.org * Lars Magne Ingebrigtsen