Change latex provider to luatex, closes #476

autoload/vimtex/syntax/p/listings.vim

@@ -0,0 +1,75 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'latex') == -1
+
+" vimtex - LaTeX plugin for Vim
+"
+" Maintainer: Karl Yngve Lervåg
+" Email:      karl.yngve@gmail.com
+"
+
+function! vimtex#syntax#p#listings#load() abort " {{{1
+  if has_key(b:vimtex_syntax, 'listings') | return | endif
+  let b:vimtex_syntax.listings = s:get_nested_languages()
+
+  " First some general support
+  syntax match texInputFile
+        \ "\\lstinputlisting\s*\(\[.\{-}\]\)\={.\{-}}"
+        \ contains=texStatement,texInputCurlies,texInputFileOpt
+  syntax match texZone "\\lstinline\s*\(\[.\{-}\]\)\={.\{-}}"
+
+  " Set all listings environments to listings
+  syntax cluster texFoldGroup add=texZoneListings
+  syntax region texZoneListings
+        \ start="\\begin{lstlisting}\(\_s*\[\_[^\]]\{-}\]\)\?"rs=s
+        \ end="\\end{lstlisting}\|%stopzone\>"re=e
+        \ keepend
+        \ contains=texBeginEnd
+
+  " Next add nested syntax support for desired languages
+  for l:nested in b:vimtex_syntax.listings
+    let l:cluster = vimtex#syntax#misc#include(l:nested)
+    if empty(l:cluster) | continue | endif
+
+    let l:group_main = 'texZoneListings' . toupper(l:nested[0]) . l:nested[1:]
+    let l:group_lstset = l:group_main . 'Lstset'
+    let l:group_contained = l:group_main . 'Contained'
+    execute 'syntax cluster texFoldGroup add=' . l:group_main
+    execute 'syntax cluster texFoldGroup add=' . l:group_lstset
+
+    execute 'syntax region' l:group_main
+          \ 'start="\c\\begin{lstlisting}\s*'
+          \ . '\[\_[^\]]\{-}language=' . l:nested . '\%(\s*,\_[^\]]\{-}\)\?\]"rs=s'
+          \ 'end="\\end{lstlisting}"re=e'
+          \ 'keepend'
+          \ 'transparent'
+          \ 'contains=texBeginEnd,@' . l:cluster
+
+    execute 'syntax match' l:group_lstset
+          \ '"\c\\lstset{.*language=' . l:nested . '\%(\s*,\|}\)"'
+          \ 'transparent'
+          \ 'contains=texStatement,texMatcher'
+          \ 'skipwhite skipempty'
+          \ 'nextgroup=' . l:group_contained
+
+    execute 'syntax region' l:group_contained
+          \ 'start="\\begin{lstlisting}"rs=s'
+          \ 'end="\\end{lstlisting}"re=e'
+          \ 'keepend'
+          \ 'transparent'
+          \ 'containedin=' . l:group_lstset
+          \ 'contains=texStatement,texBeginEnd,@' . l:cluster
+  endfor
+
+  highlight link texZoneListings texZone
+endfunction
+
+" }}}1
+
+function! s:get_nested_languages() abort " {{{1
+  return map(
+        \ filter(getline(1, '$'), "v:val =~# 'language='"),
+        \ 'matchstr(v:val, ''language=\zs\w\+'')')
+endfunction
+
+" }}}1
+
+endif