Change latex provider to luatex, closes #476

autoload/vimtex/syntax/p/wiki.vim

@@ -0,0 +1,26 @@
+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#wiki#load() abort " {{{1
+  if has_key(b:vimtex_syntax, 'wiki') | return | endif
+  let b:vimtex_syntax.wiki = 1
+
+  call vimtex#syntax#misc#add_to_section_clusters('texZoneWiki')
+  call vimtex#syntax#misc#include('markdown')
+
+  syntax region texZoneWiki
+        \ start='\\wikimarkup\>'
+        \ end='\\nowikimarkup\>'re=e
+        \ keepend
+        \ transparent
+        \ contains=@vimtex_nested_markdown,@texFoldGroup,@texDocGroup
+endfunction
+
+" }}}1
+
+endif