Some major updates including heuristics

- Allow to define heuristics in heuristics.yaml
- Migrate all filetypes from vim beginning with "a"
- Remove enhanced cpp syntax (it was too slow to load)
- Use setf instead of set ft for setting filetype (faster)
- Override native hauristics with au!
- Add globbing of files for packages
- Replace predefined dirs with extra_dirs and ignored_dirs
- Allow to define proper order of packages with topological sort
- Fix powershell detection
- Lint and fix many packages.yaml issues
- etc etd

ftplugin/8th.vim

@@ -0,0 +1,29 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, '8th') == -1
+
+" Vim ftplugin file
+" Language:	8th
+" Version:	any
+" Last Change:	2015/11/08
+" Maintainer:	Ron Aaron <ron@aaron-tech.com>
+" URL:          https://8th-dev.com/
+" Filetypes:	*.8th
+" NOTE: 	8th allows any non-whitespace in a name, so you need to do:
+" 		setlocal iskeyword=!,@,33-35,%,$,38-64,A-Z,91-96,a-z,123-126,128-255
+" 		This goes with the syntax/8th.vim file.
+
+" Only do this when not done yet for this buffer
+if exists("b:did_8thplugin")
+ finish
+endif
+
+" Don't load another plugin for this buffer
+let b:did_8thplugin = 1
+
+setlocal ts=2 sts=2 sw=2 et
+setlocal com=s1:/*,mb:*,ex:*/,:\|,:\\
+setlocal fo=tcrqol
+setlocal matchpairs+=\::;
+setlocal iskeyword=!,@,33-35,%,$,38-64,A-Z,91-96,a-z,123-126,128-255
+setlocal suffixesadd=.8th
+
+endif

ftplugin/a2ps.vim

@@ -0,0 +1,24 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'a2ps') == -1
+
+" Vim filetype plugin file
+" Language:             a2ps(1) configuration file
+" Previous Maintainer:  Nikolai Weibull <now@bitwi.se>
+" Latest Revision:      2008-07-09
+
+if exists("b:did_ftplugin")
+  finish
+endif
+let b:did_ftplugin = 1
+
+let s:cpo_save = &cpo
+set cpo&vim
+
+let b:undo_ftplugin = "setl com< cms< inc< fo<"
+
+setlocal comments=:# commentstring=#\ %s include=^\\s*Include:
+setlocal formatoptions-=t formatoptions+=croql
+
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
+endif

ftplugin/aap.vim

@@ -0,0 +1,29 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'aap') == -1
+
+" Vim filetype plugin file
+" Language:	Aap recipe
+" Maintainer:	Bram Moolenaar <Bram@vim.org>
+" Last Change:	2013 Apr 05
+
+" Only do this when not done yet for this buffer
+if exists("b:did_ftplugin")
+  finish
+endif
+
+" Don't load another plugin for this buffer
+let b:did_ftplugin = 1
+
+" Reset 'formatoptions', 'comments' and 'expandtab' to undo this plugin.
+let b:undo_ftplugin = "setl fo< com< et<"
+
+" Set 'formatoptions' to break comment lines but not other lines,
+" and insert the comment leader when hitting <CR> or using "o".
+setlocal fo-=t fo+=croql
+
+" Set 'comments' to format dashed lists in comments.
+setlocal comments=s:#\ -,m:#\ \ ,e:#,n:#,fb:-
+
+" Expand tabs to spaces to avoid trouble.
+setlocal expandtab
+
+endif

ftplugin/abap.vim

@@ -0,0 +1,33 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'abap') == -1
+
+" Vim filetype plugin file
+" Language:	ABAP
+" Author:	Steven Oliver <oliver.steven@gmail.com>
+" Copyright:	Copyright (c) 2013 Steven Oliver
+" License:	You may redistribute this under the same terms as Vim itself
+" --------------------------------------------------------------------------
+
+" Only do this when not done yet for this buffer
+if (exists("b:did_ftplugin"))
+  finish
+endif
+let b:did_ftplugin = 1
+
+let s:cpo_save = &cpo
+set cpo&vim
+
+setlocal softtabstop=2 shiftwidth=2
+setlocal suffixesadd=.abap
+
+" Windows allows you to filter the open file dialog
+if has("gui_win32") && !exists("b:browsefilter")
+  let b:browsefilter = "ABAP Source Files (*.abap)\t*.abap\n" .
+                     \ "All Files (*.*)\t*.*\n"
+endif
+
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
+" vim: set sw=4 sts=4 et tw=80 :
+
+endif

ftplugin/abaqus.vim

@@ -0,0 +1,101 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'abaqus') == -1
+
+" Vim filetype plugin file
+" Language:     Abaqus finite element input file (www.abaqus.com)
+" Maintainer:   Carl Osterwisch <osterwischc@asme.org>
+" Last Change:  2012 Apr 30
+
+" Only do this when not done yet for this buffer
+if exists("b:did_ftplugin") | finish | endif
+
+" Don't load another plugin for this buffer
+let b:did_ftplugin = 1
+
+" Save the compatibility options and temporarily switch to vim defaults
+let s:cpo_save = &cpoptions
+set cpoptions&vim
+
+" Set the format of the include file specification for Abaqus
+" Used in :check gf ^wf [i and other commands
+setlocal include=\\<\\cINPUT\\s*=
+
+" Remove characters up to the first = when evaluating filenames
+setlocal includeexpr=substitute(v:fname,'.\\{-}=','','')
+
+" Remove comma from valid filename characters since it is used to
+" separate keyword parameters
+setlocal isfname-=,
+
+" Define format of comment lines (see 'formatoptions' for uses)
+setlocal comments=:**
+setlocal commentstring=**%s
+
+" Definitions start with a * and assign a NAME, NSET, or ELSET
+" Used in [d ^wd and other commands
+setlocal define=^\\*\\a.*\\c\\(NAME\\\|NSET\\\|ELSET\\)\\s*=
+
+" Abaqus keywords and identifiers may include a - character
+setlocal iskeyword+=-
+
+let b:undo_ftplugin = "setlocal include< includeexpr< isfname<"
+    \ . " comments< commentstring< define< iskeyword<"
+
+if has("folding")
+    " Fold all lines that do not begin with *
+    setlocal foldexpr=getline(v:lnum)[0]!=\"\*\"
+    setlocal foldmethod=expr
+    let b:undo_ftplugin .= " foldexpr< foldmethod<"
+endif
+
+" Set the file browse filter (currently only supported under Win32 gui)
+if has("gui_win32") && !exists("b:browsefilter")
+    let b:browsefilter = "Abaqus Input Files (*.inp *.inc)\t*.inp;*.inc\n" .
+    \ "Abaqus Results (*.dat)\t*.dat\n" .
+    \ "Abaqus Messages (*.pre *.msg *.sta)\t*.pre;*.msg;*.sta\n" .
+    \ "All Files (*.*)\t*.*\n"
+    let b:undo_ftplugin .= "|unlet! b:browsefilter"
+endif
+
+" Define patterns for the matchit plugin
+if exists("loaded_matchit") && !exists("b:match_words")
+    let b:match_ignorecase = 1
+    let b:match_words = 
+    \ '\*part:\*end\s*part,' .
+    \ '\*assembly:\*end\s*assembly,' .
+    \ '\*instance:\*end\s*instance,' .
+    \ '\*step:\*end\s*step'
+    let b:undo_ftplugin .= "|unlet! b:match_ignorecase b:match_words"
+endif
+
+" Define keys used to move [count] keywords backward or forward.
+noremap <silent><buffer> [[ ?^\*\a<CR>:nohlsearch<CR>
+noremap <silent><buffer> ]] /^\*\a<CR>:nohlsearch<CR>
+
+" Define key to toggle commenting of the current line or range
+noremap <silent><buffer> <LocalLeader><LocalLeader> 
+    \ :call <SID>Abaqus_ToggleComment()<CR>j
+function! <SID>Abaqus_ToggleComment() range
+    if strpart(getline(a:firstline), 0, 2) == "**"
+        " Un-comment all lines in range
+        silent execute a:firstline . ',' . a:lastline . 's/^\*\*//'
+    else
+        " Comment all lines in range
+        silent execute a:firstline . ',' . a:lastline . 's/^/**/'
+    endif
+endfunction
+
+let b:undo_ftplugin .= "|unmap <buffer> [[|unmap <buffer> ]]"
+    \ . "|unmap <buffer> <LocalLeader><LocalLeader>"
+
+" Undo must be done in nocompatible mode for <LocalLeader>.
+let b:undo_ftplugin = "let s:cpo_save = &cpoptions|"
+    \ . "set cpoptions&vim|"
+    \ . b:undo_ftplugin
+    \ . "|let &cpoptions = s:cpo_save"
+    \ . "|unlet s:cpo_save"
+
+" Restore saved compatibility options
+let &cpoptions = s:cpo_save
+unlet s:cpo_save
+
+endif

ftplugin/ada.vim

@@ -0,0 +1,214 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'ada') == -1
+
+"------------------------------------------------------------------------------
+"  Description: Perform Ada specific completion & tagging.
+"     Language: Ada (2005)
+"	   $Id: ada.vim 887 2008-07-08 14:29:01Z krischik $
+"   Maintainer: Martin Krischik <krischik@users.sourceforge.net>
+"		Taylor Venable <taylor@metasyntax.net>
+"		Neil Bird <neil@fnxweb.com>
+"      $Author: krischik $
+"	 $Date: 2008-07-08 16:29:01 +0200 (Di, 08 Jul 2008) $
+"      Version: 4.6 with patch from David Bürgin
+"    $Revision: 887 $
+"     $HeadURL: https://gnuada.svn.sourceforge.net/svnroot/gnuada/trunk/tools/vim/ftplugin/ada.vim $
+"      History: 24.05.2006 MK Unified Headers
+"		26.05.2006 MK ' should not be in iskeyword.
+"		16.07.2006 MK Ada-Mode as vim-ball
+"		02.10.2006 MK Better folding.
+"		15.10.2006 MK Bram's suggestion for runtime integration
+"               05.11.2006 MK Bram suggested not to use include protection for
+"                             autoload
+"		05.11.2006 MK Bram suggested to save on spaces
+"		08.07.2007 TV fix default compiler problems.
+"    Help Page: ft-ada-plugin
+"------------------------------------------------------------------------------
+" Provides mapping overrides for tag jumping that figure out the current
+" Ada object and tag jump to that, not the 'simple' vim word.
+" Similarly allows <Ctrl-N> matching of full-length ada entities from tags.
+"------------------------------------------------------------------------------
+
+" Only do this when not done yet for this buffer
+if exists ("b:did_ftplugin") || version < 700
+   finish
+endif
+
+" Don't load another plugin for this buffer
+let b:did_ftplugin = 45
+
+"
+" Temporarily set cpoptions to ensure the script loads OK
+"
+let s:cpoptions = &cpoptions
+set cpoptions-=C
+
+" Section: Comments  {{{1
+"
+setlocal comments=O:--,:--\ \ 
+setlocal commentstring=--\ \ %s
+setlocal complete=.,w,b,u,t,i
+
+" Section: case	     {{{1
+"
+setlocal nosmartcase
+setlocal ignorecase
+
+" Section: formatoptions {{{1
+"
+setlocal formatoptions+=ron
+
+" Section: Tagging {{{1
+"
+if exists ("g:ada_extended_tagging")
+   " Make local tag mappings for this buffer (if not already set)
+   if g:ada_extended_tagging == 'jump'
+      if mapcheck('<C-]>','n') == ''
+	 nnoremap <unique> <buffer> <C-]>    :call ada#Jump_Tag ('', 'tjump')<cr>
+      endif
+      if mapcheck('g<C-]>','n') == ''
+	 nnoremap <unique> <buffer> g<C-]>   :call ada#Jump_Tag ('','stjump')<cr>
+      endif
+   elseif g:ada_extended_tagging == 'list'
+      if mapcheck('<C-]>','n') == ''
+	 nnoremap <unique> <buffer> <C-]>    :call ada#List_Tag ()<cr>
+      endif
+      if mapcheck('g<C-]>','n') == ''
+	 nnoremap <unique> <buffer> g<C-]>   :call ada#List_Tag ()<cr>
+      endif
+   endif
+endif
+
+" Section: Completion {{{1
+"
+setlocal completefunc=ada#User_Complete
+setlocal omnifunc=adacomplete#Complete
+
+if exists ("g:ada_extended_completion")
+   if mapcheck ('<C-N>','i') == ''
+      inoremap <unique> <buffer> <C-N> <C-R>=ada#Completion("\<lt>C-N>")<cr>
+   endif
+   if mapcheck ('<C-P>','i') == ''
+      inoremap <unique> <buffer> <C-P> <C-R>=ada#Completion("\<lt>C-P>")<cr>
+   endif
+   if mapcheck ('<C-X><C-]>','i') == ''
+      inoremap <unique> <buffer> <C-X><C-]> <C-R>=<SID>ada#Completion("\<lt>C-X>\<lt>C-]>")<cr>
+   endif
+   if mapcheck ('<bs>','i') == ''
+      inoremap <silent> <unique> <buffer> <bs> <C-R>=ada#Insert_Backspace ()<cr>
+   endif
+endif
+
+" Section: Matchit {{{1
+"
+" Only do this when not done yet for this buffer & matchit is used
+"
+if !exists ("b:match_words")  &&
+  \ exists ("loaded_matchit")
+   "
+   " The following lines enable the macros/matchit.vim plugin for
+   " Ada-specific extended matching with the % key.
+   "
+   let s:notend      = '\%(\<end\s\+\)\@<!'
+   let b:match_words =
+      \ s:notend . '\<if\>:\<elsif\>:\<else\>:\<end\>\s\+\<if\>,' .
+      \ s:notend . '\<case\>:\<when\>:\<end\>\s\+\<case\>,' .
+      \ '\%(\<while\>.*\|\<for\>.*\|'.s:notend.'\)\<loop\>:\<end\>\s\+\<loop\>,' .
+      \ '\%(\<do\>\|\<begin\>\):\<exception\>:\<end\>\s*\%($\|[;A-Z]\),' .
+      \ s:notend . '\<record\>:\<end\>\s\+\<record\>'
+endif
+
+
+" Section: Compiler {{{1
+"
+if ! exists("g:ada_default_compiler")
+   if has("vms")
+      let g:ada_default_compiler = 'decada'
+   else
+      let g:ada_default_compiler = 'gnat'
+   endif
+endif
+
+if ! exists("current_compiler")			||
+   \ current_compiler != g:ada_default_compiler
+   execute "compiler " . g:ada_default_compiler
+endif
+
+" Section: Folding {{{1
+"
+if exists("g:ada_folding")
+   if g:ada_folding[0] == 'i'
+      setlocal foldmethod=indent
+      setlocal foldignore=--
+      setlocal foldnestmax=5
+   elseif g:ada_folding[0] == 'g'
+      setlocal foldmethod=expr
+      setlocal foldexpr=ada#Pretty_Print_Folding(v:lnum)
+   elseif g:ada_folding[0] == 's'
+      setlocal foldmethod=syntax
+   endif
+   setlocal tabstop=8
+   setlocal softtabstop=3
+   setlocal shiftwidth=3
+endif
+
+" Section: Abbrev {{{1
+"
+if exists("g:ada_abbrev")
+   iabbrev ret	return
+   iabbrev proc procedure
+   iabbrev pack package
+   iabbrev func function
+endif
+
+" Section: Commands, Mapping, Menus {{{1
+"
+call ada#Map_Popup (
+   \ 'Tag.List',
+   \  'l',
+   \ 'call ada#List_Tag ()')
+call ada#Map_Popup (
+   \'Tag.Jump',
+   \'j',
+   \'call ada#Jump_Tag ()')
+call ada#Map_Menu (
+   \'Tag.Create File',
+   \':AdaTagFile',
+   \'call ada#Create_Tags (''file'')')
+call ada#Map_Menu (
+   \'Tag.Create Dir',
+   \':AdaTagDir',
+   \'call ada#Create_Tags (''dir'')')
+
+call ada#Map_Menu (
+   \'Highlight.Toggle Space Errors',
+   \ ':AdaSpaces',
+   \'call ada#Switch_Syntax_Option (''space_errors'')')
+call ada#Map_Menu (
+   \'Highlight.Toggle Lines Errors',
+   \ ':AdaLines',
+   \'call ada#Switch_Syntax_Option (''line_errors'')')
+call ada#Map_Menu (
+   \'Highlight.Toggle Rainbow Color',
+   \ ':AdaRainbow',
+   \'call ada#Switch_Syntax_Option (''rainbow_color'')')
+call ada#Map_Menu (
+   \'Highlight.Toggle Standard Types',
+   \ ':AdaTypes',
+   \'call ada#Switch_Syntax_Option (''standard_types'')')
+
+" 1}}}
+" Reset cpoptions
+let &cpoptions = s:cpoptions
+unlet s:cpoptions
+
+finish " 1}}}
+
+"------------------------------------------------------------------------------
+"   Copyright (C) 2006	Martin Krischik
+"
+"   Vim is Charityware - see ":help license" or uganda.txt for licence details.
+"------------------------------------------------------------------------------
+" vim: textwidth=78 nowrap tabstop=8 shiftwidth=3 softtabstop=3 noexpandtab
+" vim: foldmethod=marker
+
+endif

ftplugin/alsaconf.vim

@@ -0,0 +1,23 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'alsaconf') == -1
+
+" Vim filetype plugin file
+" Language:             alsaconf(8) configuration file
+" Previous Maintainer:  Nikolai Weibull <now@bitwi.se>
+" Latest Revision:      2008-07-09
+
+if exists("b:did_ftplugin")
+  finish
+endif
+let b:did_ftplugin = 1
+
+let s:cpo_save = &cpo
+set cpo&vim
+
+let b:undo_ftplugin = "setl com< cms< fo<"
+
+setlocal comments=:# commentstring=#\ %s formatoptions-=t formatoptions+=croql
+
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
+endif

ftplugin/ant.vim

@@ -0,0 +1,48 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'ant') == -1
+
+" Vim filetype plugin file
+" Language:	ant
+" Maintainer:	Dan Sharp <dwsharp at users dot sourceforge dot net>
+" Last Changed: 20 Jan 2009
+" URL:		http://dwsharp.users.sourceforge.net/vim/ftplugin
+
+if exists("b:did_ftplugin") | finish | endif
+
+" Make sure the continuation lines below do not cause problems in
+" compatibility mode.
+let s:save_cpo = &cpo
+set cpo-=C
+
+" Define some defaults in case the included ftplugins don't set them.
+let s:undo_ftplugin = ""
+let s:browsefilter = "XML Files (*.xml)\t*.xml\n" .
+	    \	     "All Files (*.*)\t*.*\n"
+
+runtime! ftplugin/xml.vim ftplugin/xml_*.vim ftplugin/xml/*.vim
+let b:did_ftplugin = 1
+
+" Override our defaults if these were set by an included ftplugin.
+if exists("b:undo_ftplugin")
+    let s:undo_ftplugin = b:undo_ftplugin
+endif
+if exists("b:browsefilter")
+    let s:browsefilter = b:browsefilter
+endif
+
+" Change the :browse e filter to primarily show Ant-related files.
+if has("gui_win32")
+    let b:browsefilter = "Build Files (build.xml)\tbuild.xml\n" .
+		\	 "Java Files (*.java)\t*.java\n" .
+		\	 "Properties Files (*.prop*)\t*.prop*\n" .
+		\	 "Manifest Files (*.mf)\t*.mf\n" .
+		\	 s:browsefilter
+endif
+
+" Undo the stuff we changed.
+let b:undo_ftplugin = "unlet! b:browsefilter | " . s:undo_ftplugin
+
+" Restore the saved compatibility options.
+let &cpo = s:save_cpo
+unlet s:save_cpo
+
+endif

ftplugin/arch.vim

@@ -0,0 +1,23 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'arch') == -1
+
+" Vim filetype plugin file
+" Language:             GNU Arch inventory file
+" Previous Maintainer:  Nikolai Weibull <now@bitwi.se>
+" Latest Revision:      2008-07-09
+
+if exists("b:did_ftplugin")
+  finish
+endif
+let b:did_ftplugin = 1
+
+let s:cpo_save = &cpo
+set cpo&vim
+
+let b:undo_ftplugin = "setl com< cms< fo<"
+
+setlocal comments=:# commentstring=#\ %s formatoptions-=t formatoptions+=croql
+
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
+endif

ftplugin/art.vim

@@ -0,0 +1,19 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'art') == -1
+
+" Vim filetype plugin
+" Language:      ART-IM and ART*Enterprise
+" Maintainer:    Dorai Sitaram <ds26@gte.com>
+" URL:		 http://www.ccs.neu.edu/~dorai/vimplugins/vimplugins.html
+" Last Change:   Apr 2, 2003
+
+" Only do this when not done yet for this buffer
+if exists("b:did_ftplugin")
+  finish
+endif
+
+run ftplugin/lisp.vim
+
+setl lw-=if
+setl lw+=def-art-fun,deffacts,defglobal,defrule,defschema,for,schema,while
+
+endif

ftplugin/automake.vim

@@ -0,0 +1,20 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'automake') == -1
+
+" Vim filetype plugin file
+" Language:             Automake
+" Previous Maintainer:  Nikolai Weibull <now@bitwi.se>
+" Latest Revision:      2008-07-09
+
+if exists("b:did_ftplugin")
+  finish
+endif
+
+let s:cpo_save = &cpo
+set cpo&vim
+
+runtime! ftplugin/make.vim ftplugin/make_*.vim ftplugin/make/*.vim
+
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
+endif

ftplugin/awk.vim

@@ -0,0 +1,22 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'awk') == -1
+
+" Vim filetype plugin
+" Language:	awk, nawk, gawk, mawk
+" Maintainer:	Antonio Colombo <azc100@gmail.com>
+" Last Change:	2017 Feb 17
+
+" This plugin was prepared by Mark Sikora
+
+" Only do this when not done yet for this buffer
+if exists("b:did_ftplugin")
+  finish
+endif
+
+" Don't load another plugin for this buffer
+let b:did_ftplugin = 1
+
+let b:undo_ftplugin = "setl commentstring<"
+
+setlocal commentstring=#\ %s
+
+endif

ftplugin/crystal.vim

@@ -37,8 +37,9 @@ nnoremap <buffer><Plug>(crystal-spec-run-all)       :<C-u>CrystalSpecRunAll<CR>
 nnoremap <buffer><Plug>(crystal-spec-run-current)   :<C-u>CrystalSpecRunCurrent<CR>
 nnoremap <buffer><Plug>(crystal-format)             :<C-u>CrystalFormat<CR>
 
+" autocmd is setup per buffer. Please do not use :autocmd!. It refreshes
+" augroup hence removes autocmds for other buffers (#105)
 augroup plugin-ft-crystal
-  autocmd!
   autocmd BufWritePre <buffer> if g:crystal_auto_format && &filetype ==# 'crystal' | call crystal_lang#format('', 1) | endif
 augroup END
 

ftplugin/grub.vim

@@ -0,0 +1,23 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'grub') == -1
+
+" Vim filetype plugin file
+" Language:             grub(8) configuration file
+" Previous Maintainer:  Nikolai Weibull <now@bitwi.se>
+" Latest Revision:      2008-07-09
+
+if exists("b:did_ftplugin")
+  finish
+endif
+let b:did_ftplugin = 1
+
+let s:cpo_save = &cpo
+set cpo&vim
+
+let b:undo_ftplugin = "setl com< cms< fo<"
+
+setlocal comments=:# commentstring=#\ %s formatoptions-=t formatoptions+=croql
+
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
+endif

ftplugin/help.vim

@@ -0,0 +1,26 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'help') == -1
+
+" Vim filetype plugin file
+" Language:             Vim help file
+" Previous Maintainer:  Nikolai Weibull <now@bitwi.se>
+" Latest Revision:      2018-12-29
+
+if exists("b:did_ftplugin")
+  finish
+endif
+let b:did_ftplugin = 1
+
+let s:cpo_save = &cpo
+set cpo&vim
+
+let b:undo_ftplugin = "setl fo< tw< cole< cocu< keywordprg<"
+
+setlocal formatoptions+=tcroql textwidth=78 keywordprg=:help
+if has("conceal")
+  setlocal cole=2 cocu=nc
+endif
+
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
+endif

ftplugin/m4.vim

@@ -0,0 +1,24 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'm4') == -1
+
+" Vim filetype plugin file
+" Language:             m4
+" Previous Maintainer:  Nikolai Weibull <now@bitwi.se>
+" Latest Revision:      2008-07-09
+
+if exists("b:did_ftplugin")
+  finish
+endif
+let b:did_ftplugin = 1
+
+let s:cpo_save = &cpo
+set cpo&vim
+
+let b:undo_ftplugin = "setl com< cms< fo<"
+
+setlocal comments=:#,:dnl commentstring=dnl\ %s
+setlocal formatoptions-=t formatoptions+=croql
+
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
+endif

ftplugin/zig.vim

@@ -1,24 +1,34 @@
 if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'zig') == -1
 
 " Only do this when not done yet for this buffer
-if (exists("b:did_ftplugin"))
+if exists("b:did_ftplugin")
   finish
 endif
 
 let b:did_ftplugin = 1
 
+let s:cpo_orig = &cpo
+set cpo&vim
+
+" Recomended code style, no tabs and 4-space indentation
 setlocal expandtab
-setlocal tabstop=4
+setlocal tabstop=8
+setlocal softtabstop=4
 setlocal shiftwidth=4
 
-setlocal suffixesadd=.zig
-setlocal suffixesadd=.zir
-setlocal commentstring=//\ %s
+setlocal formatoptions-=t formatoptions+=croql
+
+setlocal suffixesadd=.zig,.zir
 setlocal makeprg=zig\ build
 
-if (has("comments"))
-    set comments=:///,://,:\\\\
-    set formatoptions=tcqor
+if has("comments")
+    setlocal comments=:///,://!,://,:\\\\
+    setlocal commentstring=//\ %s
 endif
 
+let b:undo_ftplugin = "setl et< ts< sts< sw< fo< sua< mp< com< cms<"
+
+let &cpo = s:cpo_orig
+unlet s:cpo_orig
+
 endif