Make latex errors less verbose

[t-makaro]

Passing the quiet flag to latex should make the output when latex throws an error far more user friendly. Warnings will be ignored, but things that actually stop the conversion or return a failure return code will still be displayed.

Example: Due to a simple error in converting math:
New output:

notebook2.tex:366: Display math should end with $$
notebook2.tex:368:
notebook2.tex:368: Missing
notebook2.tex:368: Display math should end with $$

Old Output:

This is XeTeX, Version 3.14159265-2.6-0.99999 (MiKTeX 2.9.6800 64-bit)
entering extended mode
(notebook2.tex
LaTeX2e <2018-04-01> patch level 5
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\base\article.cls"
Document Class: article 2014/09/29 v1.4h Standard LaTeX document class
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\base\size11.clo"))
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\base\fontenc.sty"
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\base\t1enc.def")
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\lm\t1lmr.fd"))
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\psnfss\mathpazo.sty")
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\graphics\graphicx.sty"
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\graphics\keyval.sty")
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\graphics\graphics.sty"
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\graphics\trig.sty")
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\graphics-cfg\graphics.cf
g")
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\graphics-def\xetex.def")
)) ("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\caption\caption.sty"
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\caption\caption3.sty"))
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\adjustbox\adjustbox.sty"
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\xkeyval\xkeyval.sty"
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\generic\xkeyval\xkeyval.tex"
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\generic\xkeyval\xkvutils.tex")
)) ("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\adjustbox\adjcalc.sty
") ("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\adjustbox\trimclip.st
y"
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\collectbox\collectbox.st
y")
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\adjustbox\tc-xetex.def")
) ("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\ifoddpage\ifoddpage.st
y") ("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\varwidth\varwidth.st
y")) ("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\xcolor\xcolor.sty"
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\graphics-cfg\color.cfg")
) ("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\tools\enumerate.sty")
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\geometry\geometry.sty"
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\generic\oberdiek\ifpdf.sty")
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\generic\oberdiek\ifvtex.sty")
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\generic\ifxetex\ifxetex.sty")
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\xelatex\xetexconfig\geometry.c
fg")) ("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\amsmath\amsmath.st
y"
For additional information on amsmath, use the `?' option.
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\amsmath\amstext.sty"
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\amsmath\amsgen.sty"))
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\amsmath\amsbsy.sty")
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\amsmath\amsopn.sty"))
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\amsfonts\amssymb.sty"
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\amsfonts\amsfonts.sty"))
 ("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\base\textcomp.sty"
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\base\ts1enc.def"))
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\upquote\upquote.sty")
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\eurosym\eurosym.sty")
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\ucs\ucs.sty"
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\ucs\uni-global.def"))
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\base\inputenc.sty"

Package inputenc Warning: inputenc package ignored with utf8 based engines.

) ("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\fancyvrb\fancyvrb.sty"

Style option: `fancyvrb' v2.7a, with DG/SPQR fixes, and firstline=lastline fix
<2008/02/07> (tvz))
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\oberdiek\grffile.sty"
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\oberdiek\kvoptions.sty"
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\generic\oberdiek\ltxcmds.sty")
 ("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\generic\oberdiek\kvsetkeys.st
y"
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\generic\oberdiek\infwarerr.sty
")
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\generic\oberdiek\etexcmds.sty"
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\generic\oberdiek\ifluatex.sty"
))))
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\generic\oberdiek\pdftexcmds.st
y"))
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\hyperref\hyperref.sty"
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\generic\oberdiek\hobsub-hyperr
ef.sty"
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\generic\oberdiek\hobsub-generi
c.sty"))
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\oberdiek\auxhook.sty")
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\hyperref\pd1enc.def")
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\00miktex\hyperref.cfg")
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\url\url.sty"))
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\hyperref\hxetex.def"
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\hyperref\puenc.def")
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\generic\oberdiek\stringenc.sty
")
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\oberdiek\rerunfilecheck.
sty"))
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\tools\longtable.sty")
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\booktabs\booktabs.sty")
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\enumitem\enumitem.sty")
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\ulem\ulem.sty")
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\jknappen\mathrsfs.sty")
(notebook2.aux)
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\base\ts1cmr.fd")
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\psnfss\t1ppl.fd")
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\caption\ltcaption.sty")
*geometry* detected driver: pdftex
*geometry* verbose mode - [ preamble ] result:
* driver: pdftex
* paper: <default>
* layout: <same size as paper>
* layoutoffset:(h,v)=(0.0pt,0.0pt)
* modes:
* h-part:(L,W,R)=(72.26999pt, 469.75502pt, 72.26999pt)
* v-part:(T,H,B)=(72.26999pt, 650.43001pt, 72.26999pt)
* \paperwidth=614.295pt
* \paperheight=794.96999pt
* \textwidth=469.75502pt
* \textheight=650.43001pt
* \oddsidemargin=0.0pt
* \evensidemargin=0.0pt
* \topmargin=-37.0pt
* \headheight=12.0pt
* \headsep=25.0pt
* \topskip=11.0pt
* \footskip=30.0pt
* \marginparwidth=59.0pt
* \marginparsep=10.0pt
* \columnsep=10.0pt
* \skip\footins=10.0pt plus 4.0pt minus 2.0pt
* \hoffset=0.0pt
* \voffset=0.0pt
* \mag=1000
* \@twocolumnfalse
* \@twosidefalse
* \@mparswitchfalse
* \@reversemarginfalse
* (1in=72.27pt=25.4mm, 1cm=28.453pt)

("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\ucs\ucsencs.def")
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\hyperref\nameref.sty"
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\generic\oberdiek\gettitlestrin
g.sty")) (notebook2.out) (notebook2.out)
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\psnfss\ot1ppl.fd")
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\psnfss\omlzplm.fd")
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\psnfss\omszplm.fd")
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\psnfss\omxzplm.fd")
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\psnfss\ot1zplm.fd")
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\jknappen\ursfs.fd")

LaTeX Warning: No \author given.


("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\generic\oberdiek\se-ascii-prin
t.def") ("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\lm\t1lmtt.fd")
("E:\TMOko\AppData\Local\Programs\MiKTeX 2.9\tex\latex\lm\ts1lmtt.fd") [1]
Underfull \hbox (badness 10000) in paragraph at lines 357--358

! Display math should end with $$.
<to be read again>

l.366 \$\[$

?

! LaTeX Error: Bad math environment delimiter.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...

l.368 \]

?
! Missing $ inserted.
<inserted text>
                $
l.368 \]

?
! Display math should end with $$.
<to be read again>
                   \endgroup
l.368 \]

?
[2] (notebook2.aux) )
Output written on notebook2.pdf (2 pages).
Transcript written on notebook2.log.

[MSeal]

This seems fine by me. I haven't seen any messages we'd miss without -quiet that we'd need. Only thing might be to made the option dependent on the log level so we could reactivate long messages with debug?

I'll leave the PR open for another day before merging in case anyone else has an opinion

[t-makaro]

Dependence on log level is a good idea, but automatically changing the latex command may just cause other problems (conflicts the user config potentially).

All of the warnings are still recorded to a notebook.log file. Maybe not cleaning up the latex files or displaying the log file depending on the log level.

IMHO. Given that latex makes a log file, I think (at least for now), always running with -quiet is good enough.