Re: [AUCTeX] TeX-next-error problems when using auctex-latexmk

[Ivan Andrus]

> On Dec 10, 2015, at 1:08 PM, Mosè Giordano <address@hidden> wrote:
> 
> Hi Ista,
> 
> 2015-12-10 20:58 GMT+01:00 Ista Zahn <address@hidden>:
>> Hi all,
>> 
>> I'm using auctex-latexmk from
>> https://github.com/tom-tan/auctex-latexmk. I'm not entirely sure if I
>> should be reporting this here or there, but decided to try here first.
>> If you think this is a bug that should be reported to auctex-latexmk
>> instead please let me know.

I thought LatexMk support was added to AUCTeX proper.  It seems like it 
shouldn’t be hard.  I could probably come up with a patch if desired, though 
maybe auctex-latexmk should be incorporated.

>> When I compile a .tex file that produces errors, calling
>> TeX-next-error with C-c ` produces a strange and unhelpful result.
>> Instead of placing the point in the .tex document at the point of the
>> error, it opens /usr/share/texmf-dist/tex/context/base/supp-pdf.mkii.
>> It gets the line number correct (i.e., if there is an error on line 6
>> of the .tex file then point is placed on line 6 of supp-pdf.mkii), but
>> somehow it gets the wrong file. I've tried to pinpoint the source of
>> the problem, but all I've come up with is that it only seems to happen
>> when the graphicx package is used.
>> 
>> Since TeX-next-error works fine when compiling with C-c LaTeX <ret> I
>> tried to see what happens differently when calling C-c LatexMk <ret>
>> instead. Diffs are at http://pastebin.com/X8egZ1EG for the *output*
>> buffers and at http://pastebin.com/r7aubUvk for the log files.
>> 
>> Installing and activating auctex-latexmk is required to reproduce the
>> problem, but after that it is easy:
>> 
>> 1) create a new .tex file with this content
>> 
>> %%% cut here %%%
>> \documentclass[11pt]{article}
>> \usepackage{graphicx}
>> 
>> \begin{document}
>> 
>> \WTF
>> 
>> \end{document}
>> 
>> %%% cut here %%%
>> 
>> 2) compile with C-c LatexMk <ret>
>> 
>> 3) try to navigate errors with C-c `
> 
> I didn't try to reproduce the error by installing `auctex-latexmk'
> because it's known that AUCTeX sometimes fails to parse the output log
> and picks up supp-pdf.mkii as offending file for warnings/errors.
> There are some works in progress trying to address this problem, but
> I'm not sure they're really still in progress.

In this case it looks like LatexMk isn’t using -file-line-error-style, which 
significantly improves AUCTeX’s ability to find the right line.  I was one of 
those people who tried to improve AUCTeX’s error recognition, but once I found 
out about -file-line-error-style, I stopped caring as much.  :-)

-Ivan