Remove unnecessary option (#457)

autoload/vimtex/env.vim

@@ -5,19 +5,6 @@
 "
 
 function! vimtex#env#init_options() " {{{1
-  call vimtex#util#set_default('g:vimtex_env_complete_list', [
-        \ 'itemize',
-        \ 'enumerate',
-        \ 'description',
-        \ 'center',
-        \ 'figure',
-        \ 'table',
-        \ 'equation',
-        \ 'multline',
-        \ 'align',
-        \ 'split',
-        \ '\[',
-        \ ])
 endfunction
 
 " }}}1
@@ -151,14 +138,18 @@ endfunction
 
 " }}}1
 function! s:input_complete(lead, cmdline, pos) " {{{1
+  " Always include displaymath
+  let l:cands = ['\[']
+
   try
-    let l:cands = uniq(sort(
-          \ g:vimtex_env_complete_list
-          \ + map(filter(vimtex#parser#tex(b:vimtex.tex, { 'detailed' : 0 }),
+    let l:cands += uniq(sort(
+          \ map(filter(vimtex#parser#tex(b:vimtex.tex, { 'detailed' : 0 }),
           \          'v:val =~# ''\\begin'''),
           \   'matchstr(v:val, ''\\begin{\zs\k*\ze\*\?}'')')))
+
+    " Never include document
+    call remove(l:cands, index(l:cands, 'document'))
   catch
-    let l:cands = g:vimtex_env_complete_list
   endtry
 
   return filter(l:cands, 'v:val =~# ''^' . a:lead . '''')

doc/vimtex.txt

@@ -370,25 +370,6 @@ Options~
 
   Default value: 0
 
-*g:vimtex_env_complete_list*
-  Define a list of environments that will be completed when changing the
-  surrounding environments (see |<plug>(vimtex-env-change)|).
-
-  Default value: >
-    let g:vimtex_env_complete_list = [
-      \ 'itemize',
-      \ 'enumerate',
-      \ 'description',
-      \ 'center',
-      \ 'figure',
-      \ 'table',
-      \ 'equation',
-      \ 'multline',
-      \ 'align',
-      \ 'split',
-      \ '\[',
-      \ ]
-<
 *g:vimtex_delim_toggle_mod_list*
   Define list of delimiter modifiers to toggle through with
   |<plug>(vimtex-delim-toggle-modifier)|.
@@ -2009,6 +1990,16 @@ The following changelog only logs particularly important changes, such as
 changes that break backwards compatibility.  See the git log for the detailed
 changelog.
 
+2016-05-31: A lot of things have updated~
+I know that people would like to see a simple list of changes. Unfortunately,
+I am bad at keeping this changelog updated. All details are available in the
+git log, though. The reason I added this entry is to note that I have removed
+an option:
+
+  *g:vimtex_env_complete_list* --- It is no longer necessary. Completion
+                                 candidates are instead parsed from the
+                                 project.
+
 2016-02-06: Large refactoring of delimiter parsing~
 I've refactored a lot of the code in order to make the parsing of delimiters
 and features that rely on delimiter detection and similar more consistent.