Change latex provider to luatex, closes #476

autoload/vimtex/syntax/p/pythontex.vim

@@ -0,0 +1,40 @@
+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#pythontex#load() abort " {{{1
+  if has_key(b:vimtex_syntax, 'pythontex') | return | endif
+  let b:vimtex_syntax.pythontex = 1
+
+  call vimtex#syntax#misc#include('python')
+
+  syntax match texStatement /\\py[bsc]\?/ contained nextgroup=texPythontexArg
+  syntax region texPythontexArg matchgroup=Delimiter
+        \ start='{' end='}'
+        \ contained contains=@vimtex_nested_python
+  syntax region texPythontexArg matchgroup=Delimiter
+        \ start='\z([#@]\)' end='\z1'
+        \ contained contains=@vimtex_nested_python
+
+  call vimtex#syntax#misc#add_to_section_clusters('texZonePythontex')
+  syntax region texZonePythontex
+        \ start='\\begin{pyblock}'rs=s
+        \ end='\\end{pyblock}'re=e
+        \ keepend
+        \ transparent
+        \ contains=texBeginEnd,@vimtex_nested_python
+  syntax region texZonePythontex
+        \ start='\\begin{pycode}'rs=s
+        \ end='\\end{pycode}'re=e
+        \ keepend
+        \ transparent
+        \ contains=texBeginEnd,@vimtex_nested_python
+endfunction
+
+" }}}1
+
+endif