Show Rnoweb location of LaTeX errors.
If vimcom.texerrs=TRUE (default), in addition to printing a copy of
LaTeX errors at the end of pdflatex output, vimcom will also show the
Rnoweb location of the errors. The feature requires that the
corresponding -concordance.tex has been generated by either Sweave or
knitr.
Vimcom reports the wrong location of errors in LaTeX subdocuments
inserted directly with the \input{} command.