Re: LaTeX/Emacs problem

[Pierre Lorenzon <devel@pollock-nageoire.net>]

From: Peter Dyballa <Peter_Dyballa@Web.DE>
Subject: Re: LaTeX/Emacs problem
Date: Fri, 11 Jan 2013 00:13:22 +0100

> 
> Am 10.01.2013 um 23:20 schrieb Fred Krogh:
> 
>> Here is an example
>> 
>> \documentclass{article}
>> %\usepackage{hyperref}
>> \begin{document}
>> \Nothing to see here folks.
>> \end{document}
>> 
>> Run latex from inside emacs and this will flag the "\Nothing" and position the cursor on that line.  Remove the % at the start of the second line, delete the *TeX Help buffer, do the same, and you will get "Error occured after last TeX file closed" and nothing else.
> 
> Not using GNU Emacs I get in the console:
> 
> 	This is pdfTeX, Version 3.1415926-2.4-1.40.13 (TeX Live 2012)
> 	 restricted \write18 enabled.
> 	entering extended mode
> 	(./Krogh.tex
> 	LaTeX2e <2011/06/27>
> 	Babel <v3.8m> and hyphenation patterns for english, dumylang, nohyphenation, german-x-2012-05-30, ngerman-x-2012-05-30, ukenglish, usenglishmax, french, friulan, german, ngerman, swissgerman, romansh, loaded.
> 	(/usr/local/texlive/2012/texmf-dist/tex/latex/base/article.cls
> 	Document Class: article 2007/10/19 v1.4h Standard LaTeX document class
> 	(/usr/local/texlive/2012/texmf-dist/tex/latex/base/size10.clo)) (./Krogh.aux)
> 	! Undefined control sequence.
> 	l.4 \Nothing
> 	             to see here folks.
> 	? 
> 	! Emergency stop.
> 	l.4 \Nothing
> 	             to see here folks.
> 	!  ==> Fatal error occurred, no output PDF file produced!
> 	Transcript written on Krogh.log.
> 
> And this is the output from AUCTeX 11.86 from inside GNU Emacs 24.3.50:
> 
> 	Running `LaTeX' on `Krogh' with ``pdflatex  -interaction=nonstopmode "\input" Krogh.tex''
> 	This is pdfTeX, Version 3.1415926-2.4-1.40.13 (TeX Live 2012)
> 	 restricted \write18 enabled.
> 	entering extended mode
> 	LaTeX2e <2011/06/27>
> 	Babel <v3.8m> and hyphenation patterns for english, dumylang, nohyphenation, german-x-2012-05-30, ngerman-x-2012-05-30, ukenglish, usenglishmax, french, friulan, german, ngerman, swissgerman, romansh, loaded.
> 	(./Krogh.tex (/usr/local/texlive/2012/texmf-dist/tex/latex/base/article.cls
> 	Document Class: article 2007/10/19 v1.4h Standard LaTeX document class
> 	(/usr/local/texlive/2012/texmf-dist/tex/latex/base/size10.clo)) (./Krogh.aux)
> 	! Undefined control sequence.
> 	l.4 \Nothing
> 	             to see here folks.
> 	[1{/usr/local/texlive/2012/texmf-var/fonts/map/pdftex/updmap/pdftex.map}] (./Krogh.aux) )
> 	(see the transcript file for additional information)</usr/local/texlive/2012/texmf-dist/fonts/type1/public/amsfonts/cm/cmr10.pfb>
> 	Output written on Krogh.pdf (1 page, 12041 bytes).
> 	Transcript written on Krogh.log.
> 	
> 	LaTeX exited abnormally with code 1 at Thu Jan 10 23:39:58
> 
> Quite similar behaviour. (I do need to update my hyphenations configuration! I'll never use Friulan or Rumansh!) When I then choose from AUCTeX's Commands menu the item "Next Error" it shows me that error and open a buffer with that contents:
> 
> 	ERROR: Undefined control sequence.
> 	
> 	--- TeX said ---
> 	l.4 \Nothing
> 	             to see here folks.
> 	--- HELP ---
> 	TeX encountered an unknown command name. You probably misspelled the
> 	name. If this message occurs when a LaTeX command is being processed,
> 	the command is probably in the wrong place---for example, the error
> 	can be produced by an \item command that's not inside a list-making
> 	environment. The error can also be caused by a missing \documentclass
> 	command.
> 
> When I then remove the comment sign, save, and run LaTeX again, I get the same error. When I then choose the same command, AUCTeX asks me for the master file. When I give the correct answer, it opens *TeX Help* buffer with the same contents – and buries the buffer with the TeX file with an empty "TeX Live 2012" buffer. This latter effect certainly is not needed.
> 
> 
> When I open an empty TeX file under the control of AUCTeX, it asks me for the master file. I show it the master file by pressing the RETURN key. I insert your example and get as buffer and file contents:
> 
> 	\documentclass{article}
> 	%\usepackage{hyperref}
> 	\begin{document}
> 	\Nothing to see here folks.
> 	\end{document}
> 	
> 	%%% Local Variables: 
> 	%%% TeX-master: t
> 	%%% End: 
> 
> With the commented line the behaviour is as before: OK. With the uncommented line, the behaviour is as before: not OK!
> 
> This is a bug in AUCTeX.  I think so as I already said in my
  previous message. Maybe not in auctex in fact but in this
  emacs librairy designed to parse process output. Maybe not
  really a bug but a non suitable configuration (almost the
  same !)



> It's even two bugs: why does it ask
> me for the master file? The opened file in the buffer is
> *obviously* 


  Not for auctex until the local variable TeX-master has not
  being correctly set. But auctex behavior can be customized at
  this point I think.

  P. 


> the master. To report it, choose "Report Bug"
> from the Preview menu!
> 
> Similar behaviour in GNU Emacs 24.2 launched with -Q. I consider reporting mine tomorrow. I'll have to read the documentation to be sure that it's not me who is buggy.
> 
> --
> Greetings
> 
>   Pete
> 
> 
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>