compiler pandoc: no qf list is opened when typing :cwindow after :make

[ubaldot]

When pandoc compiler is set and the :make command return errors, then :cwindow is expected to open the qf-list.
Unfortunately, this does not seem to be the case. Nevertheless, by typing :copen the qf-list opens and the errors are correctly displayed.

[Konfekt]

Hello, would you mind showing an input file, and maybe minimal vimrc?

[ubaldot]

You can start Vim with --clean flag and then set some args to trigger some errors, e.g. g:pandoc_compiler_args = [--lua-filter="C:\Users\ubaldot\xyz.lua"] (the file xyz.lua shall not exist). Then, open any markdown file, set compiler pandoc, run make and then run :cwindow.
The make command produces an error, the quickfix list is populated, but :cwindow won't open the qf list.

[ubaldot]

Btw, you can even just:

vim --clean
:make
:cwindow

But I am not sure that if this is the wanted behavior of :cwindow.

[Konfekt]

vim --clean
:make
:cwindow

This is an upstream issue then?

[ubaldot]

No. It is a compiler issue. :cwindow works if the error is recognized by errorformat, see vim/vim#19059 (comment)

In this case pandoc sends an error but the current errorformat is not capable to catch it. The issue shall be reopend.

[Konfekt]

Sure, please provide the output and ideally a PR with an additional line to &errorformat to parse it