GNU bug report logs - #22417
Self parsing bug

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

From: andreas.tjarnberg <at> fripost.org
To: bug-auctex <at> gnu.org
Subject: Self parsing bug
Date: Wed, 20 Jan 2016 22:09:58 +0100

Hi,

I came across the following error when loading a tex file.
It somehow seems to be connected to the latex package subfigure.

* Bug report in org-mode markup

Ubuntu 15.10
Emacs version: GNU Emacs 25.1.50.2 (x86_64-pc-linux-gnu, GTK+ Version 
3.16.7) of 2016-01-20
Auctex version: auctex.git commit #4f618ec

I fetch =auctex= with =el-get= but later only start it with =-l 
auctex.el=, either way produces the same error.

I start emacs
#+begin_src sh
emacs -q -l auctex.el
#+end_src

I then load my TeX setting
#+begin_src emacs-lisp
(setq debug-on-error t)
(setq TeX-parse-self t)
#+end_src

I then proceed to load my latex file

#+name: tex-file
#+begin_src sh :results output
cat equations.tex
#+end_src

#+RESULTS: tex-file
#+begin_example
\documentclass[12pt]{article}
% \usepackage{graphicx}
% \makeatletter
% \g <at> addto <at> macro\@floatboxreset\centering
% \makeatother
\usepackage{subfigure}

\pagestyle{empty}
\begin{document}

\begin{displaymath}
  \textbf{G}: \textbf{P} \mapsto \textbf{Y}
\end{displaymath}

\end{document}
%%% Local Variables:
%%% mode: latex
%%% TeX-master: t
%%% End:
#+end_example

This produces an error as follows:
Debugger entered--Lisp error: (wrong-number-of-arguments setq 3)
signal(wrong-number-of-arguments (setq 3))

(for some reason I can't paste the whole traceback in the mail client)

I noticed that when not using the =\usepackage{subfigure}= package, the 
error does not appear.

I think this is a bug but can't figure out where exactly it's coming 
from or how it appears.

regards
Andreas

Message #8 received at 22417 <at> debbugs.gnu.org (full text, mbox):

From: Mosè Giordano <mose <at> gnu.org>
To: andreas.tjarnberg <at> fripost.org
Cc: 22417 <at> debbugs.gnu.org
Subject: Re: bug#22417: Self parsing bug
Date: Wed, 20 Jan 2016 22:29:52 +0100

Hi Andrea,

2016-01-20 22:09 GMT+01:00  <andreas.tjarnberg <at> fripost.org>:
> Hi,
>
> I came across the following error when loading a tex file.
> It somehow seems to be connected to the latex package subfigure.
>
> * Bug report in org-mode markup
>
> Ubuntu 15.10
> Emacs version: GNU Emacs 25.1.50.2 (x86_64-pc-linux-gnu, GTK+ Version
> 3.16.7) of 2016-01-20
> Auctex version: auctex.git commit #4f618ec
>
> I fetch =auctex= with =el-get= but later only start it with =-l auctex.el=,
> either way produces the same error.
>
> I start emacs
> #+begin_src sh
> emacs -q -l auctex.el
> #+end_src
>
> I then load my TeX setting
> #+begin_src emacs-lisp
> (setq debug-on-error t)
> (setq TeX-parse-self t)
> #+end_src
>
> I then proceed to load my latex file
>
> #+name: tex-file
> #+begin_src sh :results output
> cat equations.tex
> #+end_src
>
> #+RESULTS: tex-file
> #+begin_example
> \documentclass[12pt]{article}
> % \usepackage{graphicx}
> % \makeatletter
> % \g <at> addto <at> macro\@floatboxreset\centering
> % \makeatother
> \usepackage{subfigure}
>
> \pagestyle{empty}
> \begin{document}
>
> \begin{displaymath}
>   \textbf{G}: \textbf{P} \mapsto \textbf{Y}
> \end{displaymath}
>
> \end{document}
> %%% Local Variables:
> %%% mode: latex
> %%% TeX-master: t
> %%% End:
> #+end_example
>
> This produces an error as follows:
> Debugger entered--Lisp error: (wrong-number-of-arguments setq 3)
> signal(wrong-number-of-arguments (setq 3))
>
> (for some reason I can't paste the whole traceback in the mail client)
>
> I noticed that when not using the =\usepackage{subfigure}= package, the
> error does not appear.
>
> I think this is a bug but can't figure out where exactly it's coming from or
> how it appears.

Do you get the error every time you open that file?  I can't reproduce
this bug with Emacs 24.5, same version of AUCTeX.  I can open the file
and compile it without any problem.  Have you tried to check whether
you have something in your init file triggering this bug?

Bye,
Mosè

Message #11 received at 22417 <at> debbugs.gnu.org (full text, mbox):

From: andreas.tjarnberg <at> fripost.org
To: Mosè Giordano <mose <at> gnu.org>
Cc: 22417 <at> debbugs.gnu.org
Subject: Re: bug#22417: Self parsing bug
Date: Wed, 20 Jan 2016 22:44:14 +0100

2016-01-20 22:29 skrev Mosè Giordano:
> Hi Andrea,
> 
> 2016-01-20 22:09 GMT+01:00  <andreas.tjarnberg <at> fripost.org>:
>> Hi,
>> 
>> I came across the following error when loading a tex file.
>> It somehow seems to be connected to the latex package subfigure.
>> 
>> * Bug report in org-mode markup
>> 
>> Ubuntu 15.10
>> Emacs version: GNU Emacs 25.1.50.2 (x86_64-pc-linux-gnu, GTK+ Version
>> 3.16.7) of 2016-01-20
>> Auctex version: auctex.git commit #4f618ec
>> 
>> I fetch =auctex= with =el-get= but later only start it with =-l 
>> auctex.el=,
>> either way produces the same error.
>> 
>> I start emacs
>> #+begin_src sh
>> emacs -q -l auctex.el
>> #+end_src
>> 
>> I then load my TeX setting
>> #+begin_src emacs-lisp
>> (setq debug-on-error t)
>> (setq TeX-parse-self t)
>> #+end_src
>> 
>> I then proceed to load my latex file
>> 
>> #+name: tex-file
>> #+begin_src sh :results output
>> cat equations.tex
>> #+end_src
>> 
>> #+RESULTS: tex-file
>> #+begin_example
>> \documentclass[12pt]{article}
>> % \usepackage{graphicx}
>> % \makeatletter
>> % \g <at> addto <at> macro\@floatboxreset\centering
>> % \makeatother
>> \usepackage{subfigure}
>> 
>> \pagestyle{empty}
>> \begin{document}
>> 
>> \begin{displaymath}
>>   \textbf{G}: \textbf{P} \mapsto \textbf{Y}
>> \end{displaymath}
>> 
>> \end{document}
>> %%% Local Variables:
>> %%% mode: latex
>> %%% TeX-master: t
>> %%% End:
>> #+end_example
>> 
>> This produces an error as follows:
>> Debugger entered--Lisp error: (wrong-number-of-arguments setq 3)
>> signal(wrong-number-of-arguments (setq 3))
>> 
>> (for some reason I can't paste the whole traceback in the mail client)
>> 
>> I noticed that when not using the =\usepackage{subfigure}= package, 
>> the
>> error does not appear.
>> 
>> I think this is a bug but can't figure out where exactly it's coming 
>> from or
>> how it appears.
> 
> Do you get the error every time you open that file?  I can't reproduce
> this bug with Emacs 24.5, same version of AUCTeX.  I can open the file
> and compile it without any problem.  Have you tried to check whether
> you have something in your init file triggering this bug?
> 
> Bye,
> Mosè

The only thing I load is auctex.el and the two lines
(setq debug-on-error t)
(setq TeX-parse-self t)
so my init should be only that.

The original error prevents the file to open but on subsequent tries the 
files opens without error.
I didn't triet with an older version of emacs as I don't have it 
currently.
I think it's a bit odd that it seems to be triggered by a latex package.

Message #14 received at 22417 <at> debbugs.gnu.org (full text, mbox):

From: Mosè Giordano <mose <at> gnu.org>
To: andreas.tjarnberg <at> fripost.org
Cc: 22417 <at> debbugs.gnu.org
Subject: Re: bug#22417: Self parsing bug
Date: Wed, 20 Jan 2016 22:49:02 +0100

2016-01-20 22:44 GMT+01:00  <andreas.tjarnberg <at> fripost.org>:
> The only thing I load is auctex.el and the two lines
> (setq debug-on-error t)
> (setq TeX-parse-self t)
> so my init should be only that.

What if you comment the line

    (setq TeX-parse-self t)

delete the auto parsed file (if it exists, it's in the auto/
subdirectory of the path where your file is), restart Emacs and open
the file?

> The original error prevents the file to open but on subsequent tries the
> files opens without error.
> I didn't triet with an older version of emacs as I don't have it currently.
> I think it's a bit odd that it seems to be triggered by a latex package.

Sorry, I don't have Emacs 25.1, I can't test myself.  Without a
reproducible (for me) recipe I can't do much on this.

Bye,
Mosè

Message #17 received at 22417 <at> debbugs.gnu.org (full text, mbox):

From: andreas.tjarnberg <at> fripost.org
To: Mosè Giordano <mose <at> gnu.org>
Cc: 22417 <at> debbugs.gnu.org
Subject: Re: bug#22417: Self parsing bug
Date: Wed, 20 Jan 2016 22:50:35 +0100

2016-01-20 22:44 skrev andreas.tjarnberg <at> fripost.org:
> 2016-01-20 22:29 skrev Mosè Giordano:
>> Hi Andrea,
>> 
>> 2016-01-20 22:09 GMT+01:00  <andreas.tjarnberg <at> fripost.org>:
>>> Hi,
>>> 
>>> I came across the following error when loading a tex file.
>>> It somehow seems to be connected to the latex package subfigure.
>>> 
>>> * Bug report in org-mode markup
>>> 
>>> Ubuntu 15.10
>>> Emacs version: GNU Emacs 25.1.50.2 (x86_64-pc-linux-gnu, GTK+ Version
>>> 3.16.7) of 2016-01-20
>>> Auctex version: auctex.git commit #4f618ec
>>> 
>>> I fetch =auctex= with =el-get= but later only start it with =-l 
>>> auctex.el=,
>>> either way produces the same error.
>>> 
>>> I start emacs
>>> #+begin_src sh
>>> emacs -q -l auctex.el
>>> #+end_src
>>> 
>>> I then load my TeX setting
>>> #+begin_src emacs-lisp
>>> (setq debug-on-error t)
>>> (setq TeX-parse-self t)
>>> #+end_src
>>> 
>>> I then proceed to load my latex file
>>> 
>>> #+name: tex-file
>>> #+begin_src sh :results output
>>> cat equations.tex
>>> #+end_src
>>> 
>>> #+RESULTS: tex-file
>>> #+begin_example
>>> \documentclass[12pt]{article}
>>> % \usepackage{graphicx}
>>> % \makeatletter
>>> % \g <at> addto <at> macro\@floatboxreset\centering
>>> % \makeatother
>>> \usepackage{subfigure}
>>> 
>>> \pagestyle{empty}
>>> \begin{document}
>>> 
>>> \begin{displaymath}
>>>   \textbf{G}: \textbf{P} \mapsto \textbf{Y}
>>> \end{displaymath}
>>> 
>>> \end{document}
>>> %%% Local Variables:
>>> %%% mode: latex
>>> %%% TeX-master: t
>>> %%% End:
>>> #+end_example
>>> 
>>> This produces an error as follows:
>>> Debugger entered--Lisp error: (wrong-number-of-arguments setq 3)
>>> signal(wrong-number-of-arguments (setq 3))
>>> 
>>> (for some reason I can't paste the whole traceback in the mail 
>>> client)
>>> 
>>> I noticed that when not using the =\usepackage{subfigure}= package, 
>>> the
>>> error does not appear.
>>> 
>>> I think this is a bug but can't figure out where exactly it's coming 
>>> from or
>>> how it appears.
>> 
>> Do you get the error every time you open that file?  I can't reproduce
>> this bug with Emacs 24.5, same version of AUCTeX.  I can open the file
>> and compile it without any problem.  Have you tried to check whether
>> you have something in your init file triggering this bug?
>> 
>> Bye,
>> Mosè
> 
> The only thing I load is auctex.el and the two lines
> (setq debug-on-error t)
> (setq TeX-parse-self t)
> so my init should be only that.
> 
> The original error prevents the file to open but on subsequent tries
> the files opens without error.
> I didn't triet with an older version of emacs as I don't have it 
> currently.
> I think it's a bit odd that it seems to be triggered by a latex 
> package.

I loaded a regular tex file and figured out that different latex packges 
have there own style file in auctex
subdirectory

looking in the file
auctex/style/subfigure.el i found the following setq command that fails 
when I try to execute it with the same error as i got before.

   ;; Install completion for labels:
   (setq TeX-complete-list
	 (append
	  '(("\\\\[Ss]ubref{\\([^{}\n\r\\%,]*\\)" 1 LaTeX-label-list "}")))
	  TeX-complete-list)

maybe this is what causes the error. I don't understand why the error 
only happens for me though.

Message #22 received at 22417-done <at> debbugs.gnu.org (full text, mbox):

From: Mosè Giordano <mose <at> gnu.org>
To: andreas.tjarnberg <at> fripost.org
Cc: 22417-done <at> debbugs.gnu.org
Subject: Re: bug#22417: Self parsing bug
Date: Wed, 20 Jan 2016 23:06:38 +0100

Hi Andreas,

2016-01-20 22:50 GMT+01:00  <andreas.tjarnberg <at> fripost.org>:
> looking in the file
> auctex/style/subfigure.el i found the following setq command that fails when
> I try to execute it with the same error as i got before.
>
>    ;; Install completion for labels:
>    (setq TeX-complete-list
>          (append
>           '(("\\\\[Ss]ubref{\\([^{}\n\r\\%,]*\\)" 1 LaTeX-label-list "}")))
>           TeX-complete-list)
>
> maybe this is what causes the error. I don't understand why the error only
> happens for me though.

This was useful!  setq's syntax has been changed in Emacs 25 so that
it requires an even number of arguments, see the NEWS file, that's why
you get the error while I don't.  Anyway the previous setq was wrong,
as the last `TeX-complete-list' escaped outside `append' call.  Thanks
for spotting this bug!  Fixed with the latest commit.

Bye,
Mosè

Message #25 received at 22417 <at> debbugs.gnu.org (full text, mbox):

From: andreas.tjarnberg <at> fripost.org
To: Mosè Giordano <mose <at> gnu.org>
Cc: 22417 <at> debbugs.gnu.org
Subject: Re: bug#22417: Self parsing bug
Date: Wed, 20 Jan 2016 23:10:33 +0100

2016-01-20 22:49 skrev Mosè Giordano:
> 2016-01-20 22:44 GMT+01:00  <andreas.tjarnberg <at> fripost.org>:
>> The only thing I load is auctex.el and the two lines
>> (setq debug-on-error t)
>> (setq TeX-parse-self t)
>> so my init should be only that.
> 
> What if you comment the line
> 
>     (setq TeX-parse-self t)
> 
> delete the auto parsed file (if it exists, it's in the auto/
> subdirectory of the path where your file is), restart Emacs and open
> the file?
> 
>> The original error prevents the file to open but on subsequent tries 
>> the
>> files opens without error.
>> I didn't triet with an older version of emacs as I don't have it 
>> currently.
>> I think it's a bit odd that it seems to be triggered by a latex 
>> package.
> 
> Sorry, I don't have Emacs 25.1, I can't test myself.  Without a
> reproducible (for me) recipe I can't do much on this.
> 
> Bye,
> Mosè
That is to bad. Thanks anyway for your answer.

Just for completeness.
As I said in my other mail, the error seems to originate from the 
auctex/style/subfigure.el file
and the original code that I referred to do seem like a bug to me, with 
the original intent being to add to the list. And that a parenthesis has 
gotten misplaced. I changed the code as follows

   (setq TeX-complete-list
	 (append
	  '(("\\\\[Ss]ubref{\\([^{}\n\r\\%,]*\\)" 1 LaTeX-label-list "}")) 
TeX-complete-list))

and now extend the TeX-complete-list variable (I think). This produces 
no error for me now. This is how the code looks in many other of the 
style files in that subdirectory as well.
Again I'm not sure why this would not produce an error for an earlier 
emacs, as I understand, setq should accept an even number of variable 
value pairs by default.


Bye,
Andreas

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