Provide easier way to access latex log file

[hadley]

The only way I could find to capture the log file was this hack:

options("bookdown.post.latex" = function(x) {
  xfun::write_utf8(parent.frame()$x, parent.frame()$f)
  tinytex::latexmk(f, "xelatex", clean = FALSE)
  file.copy("_main.log", "latex.log")
  x
})

I wanted needed this to find broken references, so I'd also be happy to accept any solution that made it easier to check that I hadn't cross-referenced a section that didn't exist.

[yihui]

I'll work on this in the tinytex package. When there are broken cross-references, I guess I shouldn't delete the log file, and perhaps should also parse the log to warn against these references in R. Thanks for the suggestion!

[hadley]

I think it might be reasonable to never delete the log file?

[yihui]

Yeah, that sounds like a good idea, too.

[yihui]

Should be fixed now via

devtools::install_github('yihui/tinytex')

[github-actions]

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