Ugly error message on syntax errors

[Kamil Kisiel]

For example, a snippet of LaTeX like:

$\left( \theta_{b}, \psi_{b} $

Results in a big wall of text that looks like:

TracMath macro processor has detected an error. Please fix the problem before continuing.

The command:
'/usr/bin/pdflatex -interaction=nonstopmode fbecc55d1abf3c2d6254c3592c47766b0e7fe10f.tex'
failed with the following output:
"This is pdfTeXk, Version 3.141592-1.40.3 (Web2C 7.5.6)\n %&-line parsing enabled.\nentering extended mode\n(./fbecc55d1abf3c2d6254c3592c47766b0e7fe10f.tex\nLaTeX2e <2005/12/01>\nBabel <v3.8h> and hyphenation patterns for english, usenglishmax, dumylang, noh\nyphenation, arabic, basque, bulgarian, coptic, welsh, czech, slovak, german, ng\nerman, danish, esperanto, spanish, catalan, galician, estonian, farsi, finnish,\n french, greek, monogreek, ancientgreek, croatian, hungarian, interlingua, ibyc\nus, indonesian, icelandic, italian, latin, mongolian, dutch, norsk, polish, por\ntuguese, pinyin, romanian, russian, slovenian, uppersorbian, serbian, swedish, \nturkish, ukenglish, ukrainian, loaded.\n(/usr/share/texmf/tex/latex/base/article.cls\nDocument Class: article 2005/09/16 v1.4f Standard LaTeX document class\n(/usr/share/texmf/tex/latex/base/size10.clo))\n(/usr/share/texmf/tex/latex/base/inputenc.sty\n(/usr/share/texmf/tex/latex/base/utf8.def\n(/usr/share/texmf/tex/latex/base/t1enc.dfu)\n(/usr/share/texmf/tex/latex/base/ot1enc.dfu)\n(/usr/share/texmf/tex/latex/base/omsenc.dfu)))\n(/usr/share/texmf/tex/latex/cmap/cmap.sty)\n(/usr/share/texmf/tex/latex/cmap/type1ec.sty\n(/usr/share/texmf/tex/latex/base/t1cmr.fd))\n(/usr/share/texmf/tex/latex/base/fontenc.sty\n(/usr/share/texmf/tex/latex/base/t1enc.def)<<t1.cmap>>)\n(/usr/share/texmf/tex/latex/amsmath/amsmath.sty\nFor additional information on amsmath, use the `?' option.\n(/usr/share/texmf/tex/latex/amsmath/amstext.sty\n(/usr/share/texmf/tex/latex/amsmath/amsgen.sty))\n(/usr/share/texmf/tex/latex/amsmath/amsbsy.sty)\n(/usr/share/texmf/tex/latex/amsmath/amsopn.sty))\n(/usr/share/texmf/tex/latex/amscls/amsthm.sty)\n(/usr/share/texmf/tex/latex/amsfonts/amssymb.sty\n(/usr/share/texmf/tex/latex/amsfonts/amsfonts.sty))\n(/usr/share/texmf/tex/latex/tools/bm.sty)\n(/usr/share/texmf/tex/latex/preview/preview.sty\n(/usr/share/texmf/tex/latex/preview/prtightpage.def))\n(./fbecc55d1abf3c2d6254c3592c47766b0e7fe10f.aux)\nPreview: Fontsize 10pt\nPreview: PDFoutput 1\n(/usr/share/texmf/tex/latex/amsfonts/umsa.fd)\n(/usr/share/texmf/tex/latex/amsfonts/umsb.fd)\n! Extra }, or forgotten \\right.\n\\frac #1#2->{\\begingroup #1\\endgroup \\@@over #2}\n \nl.14 ...N_iN_j \\left( 4 \\pi r^{ \\alpha } \\delta r}\n $\n! Missing \\right. inserted.\n<inserted text> \n \\right .\nl.14 ..._iN_j \\left( 4 \\pi r^{ \\alpha } \\delta r}$\n \n! Missing } inserted.\n<inserted text> \n }\nl.14 ..._iN_j \\left( 4 \\pi r^{ \\alpha } \\delta r}$\n \nPreview: Tightpage -32891 -32891 32891 32891\n[1{/usr/share/texmf/fonts/map/pdftex/updmap/pdftex.map}]\n(./fbecc55d1abf3c2d6254c3592c47766b0e7fe10f.aux) )\n(see the transcript file for additional information) </srv/trac/cache/tracmath/\nfonts/pk/ljfour/jknappen/ec/ecrm0500.600pk></usr/share/texmf/fonts/type1/bluesk\ny/cm/cmmi10.pfb></usr/share/texmf/fonts/type1/bluesky/cm/cmmi5.pfb></usr/share/\ntexmf/fonts/type1/bluesky/cm/cmmi7.pfb></usr/share/texmf/fonts/type1/bluesky/cm\n/cmr10.pfb></usr/share/texmf/fonts/type1/bluesky/cm/cmr7.pfb></usr/share/texmf/\nfonts/type1/bluesky/cm/cmsy10.pfb>\nOutput written on fbecc55d1abf3c2d6254c3592c47766b0e7fe10f.pdf (1 page, 22860 b\nytes).\nTranscript written on fbecc55d1abf3c2d6254c3592c47766b0e7fe10f.log.\n"

Not really the most user-friendly.

[Ryan J Ollos]

#11884 closed as a duplicate, which mentions that line breaks should be rendered correctly.

[Ryan J Ollos]

Deprecated and removed. Source was on BitBucket and is no longer available. For alternate, see ​trac-mathjax.