Plug 'nblock/vim-dokuwiki'

1. copy syntax/dokuwiki.vim into your ~/.vim/syntax/
2. enable by issuing :set ft=dokuwiki

Add the following snippet to your vim configuration, in case you want to enable Dokuwiki syntax highlighting for all *.txt files:

autocmd BufRead,BufNewFile *.txt       set filetype=dokuwiki

If you want to enable the comment plugin highlighting, assign any value to the dokuwiki_comment variable:

:let dokuwiki_comment=1

To disable it use :unlet. Example:

:unlet dokuwiki_comment

Syntax highlighting in code blocks can be enabled by adding the appropriate languages to the dokuwiki_fenced_languages variable in your vimrc. Example:

:let g:dokuwiki_fenced_languages = ['c', 'python', 'html']