Fix #634: Added option for indented verbatim envs

doc/vimtex.txt

@@ -584,6 +584,12 @@ Options~
 
   Default value: 1
 
+*g:vimtex_indent_verbatim_envs*
+  Use this option to set a list of verbatim environments in which there should
+  be no automatic indentation.
+
+  Default value: ['verbatim', 'lstlisting', 'minted']
+
 *g:vimtex_index_hide_line_numbers*
   If enabled, then line numbers will be hidden in the index windows.  That is,
   |nonumber| and |norelativenumber| will be set locally.

indent/tex.vim

@@ -12,6 +12,11 @@ let b:did_vimtex_indent = 1
 
 call vimtex#util#set_default('g:vimtex_indent_enabled', 1)
 if !g:vimtex_indent_enabled | finish | endif
+call vimtex#util#set_default('g:vimtex_indent_verbatim_envs', [
+      \ 'verbatim',
+      \ 'lstlisting',
+      \ 'minted',
+      \])
 
 let s:cpo_save = &cpo
 set cpo&vim
@@ -76,11 +81,15 @@ endfunction
 
 " }}}1
 function! s:is_verbatim(line, lnum) " {{{1
-  let l:env = a:line !~# '\v\\%(begin|end)\{%(verbatim|lstlisting|minted)'
+  let l:env = a:line !~# s:is_verbatim_regex
   let l:syn = synIDattr(synID(a:lnum, 1, 1), 'name') ==# 'texZone'
   return l:env && l:syn
 endfunction
 
+let s:is_verbatim_regex = '\v\\%(begin|end)\{%('
+      \ . join(g:vimtex_indent_verbatim_envs, '|')
+      \ . ')'
+
 " }}}1
 
 function! s:indent_envs(cur, prev) " {{{1