Compiler callback lines for latexmk do not work for neovim

[krishnakumarg1984]

Description

VimTex's documenation says:

A particular set of options are very convenient for a good coupling between
latexmk and Vim: $compiling_cmd, $success_cmd, and $failure_cmd. These
options can be used to specify commands that are run by latexmk before and
after compilation. This is used by VimTeX to achieve callbacks after
compilation has finished through |vimtex#compiler#callback| with something
like this: >

$compiling_cmd = "vim --remote-expr 'vimtex#compiler#callback(1)'";
$success_cmd = "vim --remote-expr 'vimtex#compiler#callback(2)'";
$failure_cmd = "vim --remote-expr 'vimtex#compiler#callback(3)'";

However, neovim (the nvim executable) does not have the ---remote-expr option available. Can the docs be updated to provide something analogous for neovim?

Steps to reproduce

No response

Expected behavior

No response

Actual behavior

No response

Do you use a latexmkrc file?

N/A

VimtexInfo

N/A

[lervag]

I've simplified these docs slightly, because they indicate something that is not really used by VimTeX. Instead, we now just do echo STATUSMESSAGE with these callback options and then parse the statusmessages from within VimTeX. See e.g. here:

vimtex/autoload/vimtex/compiler/latexmk.vim

Lines 135 to 143 in aacc062

	if self.callback
	for [l:opt, l:val] in [
	\ ['compiling_cmd', 'vimtex_compiler_callback_compiling'],
	\ ['success_cmd', 'vimtex_compiler_callback_success'],
	\ ['failure_cmd', 'vimtex_compiler_callback_failure'],
	\]
	let l:cmd .= s:wrap_option_appendcmd(l:opt, 'echo ' . l:val)
	endfor
	endif

This is too complicated to write about in the docs (and not really that relevant to users).

[krishnakumarg1984]

@lervag Should we remove those lines from our latexmkrc?

[lervag]

Yes, there is no need for these lines unless you use latexmk in the terminal (without VimTeX).