Parse LaTeX errors

Question

I would like to extract latex errors in a given log file (in LaTeX). Unfortunately, I have no idea how to extract them reliably, so for now I just take all lines starting with a ! , but is is not very robust. For instance if the error is a \foo that is not defined, I will only see:

! Undefined control sequence.
!  ==> Fatal error occurred, no output PDF file
produced!

but I will not know that it is a \foo that is missing.

Similarly, if the error is a LaTeX3 error on multiline like

! Package robExt Error: Here are some long
(robExt)                errors that span multiple lines.

I will only see the first line !Package robExt Error: Here are some long, not very helpful sometimes.

Is there a robust to know when to start, and when to stop?

in interactive mode you can nore or less go from a line starting ! to one starting ? but for example --file-line-error complicates that. — David Carlisle, Dec 21 '23 at 18:02
look at how other editors handle this https://tex.stackexchange.com/questions/2470/which-latex-ides-have-good-warning-error-analysis/7317#7317 also see https://tex.stackexchange.com/questions/649548/line-wrapping-of-l3msg-messages — David Carlisle, Dec 21 '23 at 18:06
@egreg Interesting, but I do not want any Perl dependency (my library might run on windows) — tobiasBora, Dec 21 '23 at 18:59
@DavidCarlisle the problem is that I'm not running in interactive mode… So TeX never bother defining an official format for error message? (La)TeX will always amaze me ^^' — tobiasBora, Dec 21 '23 at 19:05
Maybe have a look at https://github.com/reitzig/texlogparser/ — samcarter_is_at_topanswers.xyz, Dec 21 '23 at 19:47
assuming file-line-error is not used the format is as described on the textbook ! to a line number indicator l.123 — David Carlisle, Dec 21 '23 at 20:15
Pretty much compiling - Reducing the console output of LaTeX - TeX - LaTeX Stack Exchange . tl;dr no reliable way exists to the best of my knowledge. Just use a bunch of regexes. — user202729, Dec 22 '23 at 07:43

Parse LaTeX errors

0 Answers0