Run `:VimtexCompileOutput` automatically in case no error is found in `:cfile` but the compilation fails

[user202729]

As in the title. There are a few cases where Compilation failure! is printed yet no error message is seen, some of them includes failure by external command (bibtex?) or corrupted format file (rare situation) or empty output etc.

I think automatically opening :VimtexCompileOutput or at least informing the user like

VimTeX: Compilation failure! (no error found, run :VimtexCompileOutput to see stdout of latexmk)

would be helpful in this case.

---

Example of empty output

\documentclass{article}
\begin{document}
\end{document}

⟹ log file contains

warning  (pdf backend): no pages of output.

[lervag]

I've tried to update according to your suggestion. Can you please update and test and let me know what you think?

[user202729]

From my quick testing it does work as expected. (I notice there's quite some other changes in that commit, presumably to make the buffer being updated live as latexmk prints to its stdout)

[lervag]

Great, glad to hear it.

And yes, I did some related updates that seems to improve the overall experience of the output buffer. Still not perfect, but it feels more robust and useful to me now.