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False error on underscore in included file names #1019

altavir opened this Issue Jul 22, 2018 · 3 comments


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altavir commented Jul 22, 2018

Latexml reports errors like this:

Error:unexpected:_ Script _ can only appear in math mode
        at ./Chapter_1/lab_3_1_2.tex; line 60 col 27
        In _ from TeX.pool.ltxml line 3375
         <= Core::Stomach[@0x3d64840] <= { <= Core::Stomach[@0x3d64840] <= ...

when including file names that contain underscores (with \input command). It works fine after the error, but if there are many imports, it could fail by exceeding error limit.

@dginev dginev added the bug label Jul 22, 2018

@dginev dginev added this to the LaTeXML-0.8.3 milestone Jul 22, 2018


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brucemiller commented Jul 27, 2018

This is working fine for me in the development version (and even in 0.8.2). Do you have a minimal sample file that demonstrates the problem?


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altavir commented Jul 27, 2018

Can't reproduce it in a simple example. I will try to find the problem myself and report back.


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altavir commented Jul 27, 2018

OK, I found the problem. The message was confusing me. The error appeared not in the place where file was attached, but inside the file itself. I have a custom command that attaches ancient TexCad drawings and it contained _ in file name. Pdflatex and lualatex work fin with it, but latexml throws a error.

The issue still stands for custom commands with parameters with underscores, but it is quite rare case, I believe.

@altavir altavir closed this Jul 27, 2018

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