Print build/doc/*.log to console in case of error

[yegor256]

Now, if l3build doc fails, it prints this:

Transcript written on debate.log.
Typesetting debate
This is pdfTeX, Version 3.141592653-2.6-1.40.24 (TeX Live 2022) (preloaded format=pdflatex)
 \write18 enabled.
entering extended mode
 ! Compilation failed

Would be great to see the full content of build/doc/*.log. Now I have to manually check it after each build failure.

[FrankMittelbach]

or rerun with halt on first error in that case?

I'm not sure that showing the full log(s) in that case it helpful because they tend to be long and could be many, but maybe it would be nicer if (just like with the tests) a listing of the failed files is shown.

[zauguin]

There already is --show-log-on-error. It doesn't print all logs but only the logs from failed runs (which is typically what you want)

[FrankMittelbach]

looks like I haven't been keeping up with what got added as command line options :-)

[yegor256]

@zauguin this option doesn't really help, please see this log: https://github.com/yegor256/ffcode/actions/runs/3354309446/jobs/5557767038

[zauguin]

Sorry, I missed that you were talking about building the docs and not the tests.