Update runtime files
diff --git a/runtime/ftplugin/mp.vim b/runtime/ftplugin/mp.vim
index 3a0a3d0..bc5116e 100644
--- a/runtime/ftplugin/mp.vim
+++ b/runtime/ftplugin/mp.vim
@@ -1,82 +1,91 @@
-" Vim filetype plugin file
-" Language:           MetaPost
-" Maintainer:         Nicola Vitacolonna <nvitacolonna@gmail.com>
-" Former Maintainers: Nikolai Weibull <now@bitwi.se>
-" Latest Revision:    2016 Oct 2
+vim9script
+
+# Vim filetype plugin file
+# Language:           MetaPost
+# Maintainer:         Nicola Vitacolonna <nvitacolonna@gmail.com>
+# Former Maintainers: Nikolai Weibull <now@bitwi.se>
+# Latest Revision:    2022 Aug 12
 
 if exists("b:did_ftplugin")
   finish
 endif
-let b:did_ftplugin = 1
 
-let s:cpo_save = &cpo
-set cpo&vim
+b:did_ftplugin = 1
+b:undo_ftplugin = "setl com< cms< fo< sua< inc< def< ofu<"
 
-let b:undo_ftplugin = "setl com< cms< fo< sua< inc< def< ofu<"
-      \ . "| unlet! b:match_ignorecase b:match_words b:match_skip"
-
-setlocal comments=:% commentstring=%\ %s formatoptions-=t formatoptions+=cjroql2
-setlocal suffixesadd=.mp,.mpiv
-let &l:include = '\<\%(input\|loadmodule\)\>' " loadmodule is in MetaFun
-let &l:define = '\<\%(let\|newinternal\|interim\|def\|vardef\)\>\|\<\%(primary\|secondary\|tertiary\)def\>\s*[^ .]\+'
+setlocal comments=:%
+setlocal commentstring=%\ %s
+setlocal formatoptions+=cjroql2
+setlocal formatoptions-=t
 setlocal omnifunc=syntaxcomplete#Complete
-let g:omni_syntax_group_include_mp = 'mf\w\+,mp\w\+'
-let g:omni_syntax_group_exclude_mp = 'mfTodoComment'
+setlocal suffixesadd=.mp,.mpiv,.mpvi,.mpxl
 
-if exists(":FixBeginfigs") != 2
-  command -nargs=0 FixBeginfigs call s:fix_beginfigs()
+&l:include = '\<\%(input\|loadmodule\)\>'  # loadmodule is from MetaFun
+&l:define = '\<\%(let\|newinternal\|interim\|def\|vardef\)\>\|\<\%(primary\|secondary\|tertiary\)def\>\s*[^ .]\+'
 
-  function! s:fix_beginfigs()
-    let i = 1
-    g/^beginfig(\d*);$/s//\='beginfig('.i.');'/ | let i = i + 1
-  endfunction
+g:omni_syntax_group_include_mp = 'mf\w\+,mp\w\+,metafun\w\+'
+g:omni_syntax_group_exclude_mp = 'mfTodoComment'
+
+var fignum: number
+
+def FixBeginfigs()
+  fignum = 1
+  g/^\s*beginfig(\d*)\s*;\(\s*%.*\)\=$/s/^.\{-};/\='beginfig(' .. fignum .. ');'/ | ++fignum
+enddef
+
+command! -buffer -nargs=0 -bar FixBeginfigs FixBeginfigs()
+
+if exists("g:loaded_matchit") && !exists("b:match_words")
+  b:match_ignorecase = 0
+  b:match_skip = 'synIDattr(synID(line("."), col("."), 1), "name") =~# "^mf\\%(Comment\\|String\\|\\)$\\|^mpTeXinsert$"'
+  b:match_words = '\<if\>:\<else\%[if]\>:\<fi\>,'
+  ..              '\<for\%(\|suffixes\|ever\)\>:\<exit\%(if\|unless\)\>:\<endfor\>,'
+  ..              '\<\%(\|var\|primary\|secondary\|tertiary\)def\>:\<enddef\>,'
+  ..              '\<begin\(\a\+\)\>:end\1,'
+  ..              '\<beginlogochar\>:\<endchar\>'
+  b:undo_ftplugin ..= "| unlet! b:match_ignorecase b:match_words b:match_skip"
 endif
 
-let s:mp_regex = {
-      \ 'beginsection' : '^\s*\%(\%(\|var\|primary\|secondary\|tertiary\)def\|begin\%(fig\|char\|logochar\|glyph\|graph\)\)\>',
-      \ 'endsection'   : '^\s*\%(enddef\|end\%(fig\|char\|glyph\|graph\)\)\>',
-      \ 'beginblock'   : '^\s*\%(begingroup\|if\|for\%(\|suffixes\|ever\)\)\>',
-      \ 'endblock'     : '^\s*\%(endgroup\|fi\|endfor\)\>'
-      \ }
+if !get(g:, 'no_mp_maps', 0) && !get(g:, 'no_plugin_maps', 0)
+  const mp_regex = {
+    'beginsection': '^\s*\%(\%(\|var\|primary\|secondary\|tertiary\)def\|begin\%(fig\|char\|logochar\|glyph\|graph\)\)\>',
+    'endsection':   '^\s*\%(enddef\|end\%(fig\|char\|glyph\|graph\)\)\>',
+    'beginblock':   '^\s*\%(begingroup\|if\|for\%(\|suffixes\|ever\)\)\>',
+    'endblock':     '^\s*\%(endgroup\|fi\|endfor\)\>'}
 
-function! s:move_around(count, what, flags, visual)
-  if a:visual
-    exe "normal! gv"
-  endif
-  call search(s:mp_regex[a:what], a:flags.'s') " 's' sets previous context mark
-  call map(range(2, a:count), 'search(s:mp_regex[a:what], a:flags)')
-endfunction
+  def MoveAround(count: number, what: string, flags: string)
+    search(mp_regex[what], flags .. 's')  # 's' sets previous context mark
+    var i = 2
+    while i <= count
+      search(mp_regex[what], flags)
+      i += 1
+    endwhile
+  enddef
 
+  # Macros to move around
+  nnoremap <silent><buffer> [[ <scriptcmd>MoveAround(v:count1, "beginsection", "bW")<cr>
+  vnoremap <silent><buffer> [[ <scriptcmd>MoveAround(v:count1, "beginsection", "bW")<cr>
+  nnoremap <silent><buffer> ]] <scriptcmd>MoveAround(v:count1, "beginsection", "W") <cr>
+  vnoremap <silent><buffer> ]] <scriptcmd>MoveAround(v:count1, "beginsection", "W") <cr>
+  nnoremap <silent><buffer> [] <scriptcmd>MoveAround(v:count1, "endsection",   "bW")<cr>
+  vnoremap <silent><buffer> [] <scriptcmd>MoveAround(v:count1, "endsection",   "bW")<cr>
+  nnoremap <silent><buffer> ][ <scriptcmd>MoveAround(v:count1, "endsection",   "W") <cr>
+  vnoremap <silent><buffer> ][ <scriptcmd>MoveAround(v:count1, "endsection",   "W") <cr>
+  nnoremap <silent><buffer> [{ <scriptcmd>MoveAround(v:count1, "beginblock",   "bW")<cr>
+  vnoremap <silent><buffer> [{ <scriptcmd>MoveAround(v:count1, "beginblock",   "bW")<cr>
+  nnoremap <silent><buffer> ]} <scriptcmd>MoveAround(v:count1, "endblock",     "W") <cr>
+  vnoremap <silent><buffer> ]} <scriptcmd>MoveAround(v:count1, "endblock",     "W") <cr>
 
-" Move around macros.
-nnoremap <silent><buffer> [[ :<C-U>call <SID>move_around(v:count1, "beginsection", "bW", v:false) <CR>
-vnoremap <silent><buffer> [[ :<C-U>call <SID>move_around(v:count1, "beginsection", "bW", v:true)  <CR>
-nnoremap <silent><buffer> ]] :<C-U>call <SID>move_around(v:count1, "beginsection", "W",  v:false) <CR>
-vnoremap <silent><buffer> ]] :<C-U>call <SID>move_around(v:count1, "beginsection", "W",  v:true)  <CR>
-nnoremap <silent><buffer> [] :<C-U>call <SID>move_around(v:count1, "endsection",   "bW", v:false) <CR>
-vnoremap <silent><buffer> [] :<C-U>call <SID>move_around(v:count1, "endsection",   "bW", v:true)  <CR>
-nnoremap <silent><buffer> ][ :<C-U>call <SID>move_around(v:count1, "endsection",   "W",  v:false) <CR>
-vnoremap <silent><buffer> ][ :<C-U>call <SID>move_around(v:count1, "endsection",   "W",  v:true)  <CR>
-nnoremap <silent><buffer> [{ :<C-U>call <SID>move_around(v:count1, "beginblock",   "bW", v:false) <CR>
-vnoremap <silent><buffer> [{ :<C-U>call <SID>move_around(v:count1, "beginblock",   "bW", v:true)  <CR>
-nnoremap <silent><buffer> ]} :<C-U>call <SID>move_around(v:count1, "endblock",     "W",  v:false) <CR>
-vnoremap <silent><buffer> ]} :<C-U>call <SID>move_around(v:count1, "endblock",     "W",  v:true)  <CR>
-
-if exists("loaded_matchit")
-  let b:match_ignorecase = 0
-  let b:match_words =
-        \ '\<if\>:\<else\%[if]\>:\<fi\>,' .
-        \ '\<for\%(\|suffixes\|ever\)\>:\<exit\%(if\|unless\)\>:\<endfor\>,' .
-        \ '\<\%(\|var\|primary\|secondary\|tertiary\)def\>:\<enddef\>,' .
-        \ '\<beginfig\>:\<endfig\>,' .
-        \ '\<begingroup\>:\<endgroup\>,' .
-        \ '\<begin\%(logo\)\?char\>:\<endchar\>,' .
-        \ '\<beginglyph\>:\<endglyph\>,' .
-        \ '\<begingraph\>:\<endgraph\>'
-  " Ignore comments and strings
-  let b:match_skip = 'synIDattr(synID(line("."), col("."), 1), "name")
-        \ =~# "^mf\\%(Comment\\|String\\|\\)$\\|^mpTeXinsert$"'
+  for mapping in ["[[", "]]", "[]", "][", "[{", "]}"]
+    b:undo_ftplugin ..= printf(" | silent! execute 'nunmap <buffer> %s'", mapping)
+    b:undo_ftplugin ..= printf(" | silent! execute 'vunmap <buffer> %s'", mapping)
+  endfor
 endif
 
-let &cpo = s:cpo_save
-unlet s:cpo_save
+if (has('gui_win32') || has('gui_gtk')) && !exists('b:browsefilter')
+  b:browsefilter = "MetaPost Source Files (*.mp)\t*.mp\n"
+  ..               "All Files (*.*)\t*.*\n"
+  b:undo_ftplugin ..= ' | unlet! b:browsefilter'
+endif
+
+# vim: sw=2 fdm=marker