Update

37 files changed, 491 insertions, 249 deletions

diff --git a/autoload/dart.vim b/autoload/dart.vim
index 959b67ca..a5733d03 100644
--- a/autoload/dart.vim
+++ b/autoload/dart.vim
@@ -31,9 +31,9 @@ endfunction
 
 function! dart#fmt(...) abort
   let l:dartfmt = s:FindDartFmt()
-  if type(l:dartfmt) != type('') | return | endif
+  if empty(l:dartfmt) | return | endif
   let buffer_content = getline(1, '$')
-  let l:cmd = [l:dartfmt, '--stdin-name', shellescape(expand('%'))]
+  let l:cmd = extend(l:dartfmt, ['--stdin-name', shellescape(expand('%'))])
   if exists('g:dartfmt_options')
     call extend(l:cmd, g:dartfmt_options)
   endif
@@ -64,14 +64,30 @@ function! dart#fmt(...) abort
 endfunction
 
 function! s:FindDartFmt() abort
-  if executable('dartfmt') | return 'dartfmt' | endif
+  if executable('dart')
+    let l:version_text = system('dart --version')
+    let l:match = matchlist(l:version_text,
+        \ '\vDart SDK version: (\d+)\.(\d+)\.\d+.*')
+    if empty(l:match)
+      call s:error('Unable to determine dart version')
+      return []
+    endif
+    let l:major = l:match[1]
+    let l:minor = l:match[2]
+    if l:major > 2 || l:major == 2 && l:minor >= 14
+      return ['dart', 'format']
+    endif
+  endif
+  " Legacy fallback for Dart SDK pre 2.14
+  if executable('dartfmt') | return ['dartfmt'] | endif
   if executable('flutter')
     let l:flutter_cmd = resolve(exepath('flutter'))
     let l:bin = fnamemodify(l:flutter_cmd, ':h')
     let l:dartfmt = l:bin.'/cache/dart-sdk/bin/dartfmt'
-    if executable(l:dartfmt) | return l:dartfmt | endif
+    if executable(l:dartfmt) | return [l:dartfmt] | endif
   endif
   call s:error('Cannot find a `dartfmt` command')
+  return []
 endfunction
 
 function! dart#analyzer(q_args) abort
diff --git a/autoload/elixir/indent.vim b/autoload/elixir/indent.vim
index c9adcd0a..ccf388b7 100644
--- a/autoload/elixir/indent.vim
+++ b/autoload/elixir/indent.vim
@@ -24,6 +24,7 @@ function! elixir#indent#indent(lnum)
   call cursor(lnum, 0)
 
   let handlers = [
+        \'inside_embedded_view',
         \'top_of_file',
         \'starts_with_string_continuation',
         \'following_trailing_binary_operator',
@@ -69,6 +70,17 @@ function! s:prev_starts_with(context, expr)
   return s:_starts_with(a:context.prev_nb_text, a:expr, a:context.prev_nb_lnum)
 endfunction
 
+function! s:in_embedded_view()
+  let groups = map(synstack(line('.'), col('.')), "synIDattr(v:val, 'name')")
+  for group in ['elixirPhoenixESigil', 'elixirLiveViewSigil', 'elixirSurfaceSigil']
+    if index(groups, group) >= 0
+      return 1
+    endif
+  endfor
+
+  return 0
+endfunction
+
 " Returns 0 or 1 based on whether or not the text starts with the given
 " expression and is not a string or comment
 function! s:_starts_with(text, expr, lnum)
@@ -160,6 +172,104 @@ function! s:find_last_pos(lnum, text, match)
   return -1
 endfunction
 
+function! elixir#indent#handle_inside_embedded_view(context)
+  if !s:in_embedded_view()
+    return -1
+  endif
+
+  " Multi-line Surface data delimiters
+  let pair_lnum = searchpair('{{', '', '}}', 'bW', "line('.') == ".a:context.lnum." || s:is_string_or_comment(line('.'), col('.'))", max([0, a:context.lnum - g:elixir_indent_max_lookbehind]))
+  if pair_lnum
+    if a:context.text =~ '}}$'
+      return indent(pair_lnum)
+    elseif a:context.text =~ '}}*>$'
+      return -1
+    elseif s:prev_ends_with(a:context, '[\|%{')
+      return indent(a:context.prev_nb_lnum) + s:sw()
+    elseif a:context.prev_nb_text =~ ',$'
+      return indent(a:context.prev_nb_lnum)
+    else
+      return indent(pair_lnum) + s:sw()
+    endif
+  endif
+
+  " Multi-line opening tag -- >, />, or %> are on a different line that their opening <
+  let pair_lnum = searchpair('^\s\+<.*[^>]$', '', '^[^<]*[/%}]\?>$', 'bW', "line('.') == ".a:context.lnum." || s:is_string_or_comment(line('.'), col('.'))", max([0, a:context.lnum - g:elixir_indent_max_lookbehind]))
+  if pair_lnum
+    if a:context.text =~ '^\s\+\%\(>\|\/>\|%>\|}}>\)$'
+      call s:debug("current line is a lone >, />, or %>")
+      return indent(pair_lnum)
+    elseif a:context.text =~ '\%\(>\|\/>\|%>\|}}>\)$'
+      call s:debug("current line ends in >, />, or %>")
+      if s:prev_ends_with(a:context, ',')
+        return indent(a:context.prev_nb_lnum)
+      else
+        return -1
+      endif
+    else
+      call s:debug("in the body of a multi-line opening tag")
+      return indent(pair_lnum) + s:sw()
+    endif
+  endif
+
+  " Special cases
+  if s:prev_ends_with(a:context, '^[^<]*do\s%>')
+    call s:debug("prev line closes a multi-line do block")
+    return indent(a:context.prev_nb_lnum)
+  elseif a:context.prev_nb_text =~ 'do\s*%>$'
+    call s:debug("prev line opens a do block")
+    return indent(a:context.prev_nb_lnum) + s:sw()
+  elseif a:context.text =~ '^\s\+<\/[a-zA-Z0-9\.\-_]\+>\|<% end %>'
+    call s:debug("a single closing tag")
+    if a:context.prev_nb_text =~ '^\s\+<[^%\/]*[^/]>.*<\/[a-zA-Z0-9\.\-_]\+>$'
+      call s:debug("opening and closing tags are on the same line")
+      return indent(a:context.prev_nb_lnum) - s:sw()
+    elseif a:context.prev_nb_text =~ '^\s\+<[^%\/]*[^/]>\|\s\+>' 
+      call s:debug("prev line is opening html tag or single >")
+      return indent(a:context.prev_nb_lnum)
+    elseif s:prev_ends_with(a:context, '^[^<]*\%\(do\s\)\@<!%>')
+      call s:debug("prev line closes a multi-line eex tag")
+      return indent(a:context.prev_nb_lnum) - 2 * s:sw()
+    else
+      return indent(a:context.prev_nb_lnum) - s:sw()
+    endif
+  elseif a:context.text =~ '^\s*<%\s*\%(end\|else\|catch\|rescue\)\>.*%>'
+    call s:debug("eex middle or closing eex tag")
+    return indent(a:context.prev_nb_lnum) - s:sw()
+  elseif a:context.prev_nb_text =~ '\s*<\/\|<% end %>$'
+    call s:debug("prev is closing tag")
+    return indent(a:context.prev_nb_lnum)
+  elseif a:context.prev_nb_text =~ '^\s\+<[^%\/]*[^/]>.*<\/[a-zA-Z0-9\.\-_]\+>$'
+    call s:debug("opening and closing tags are on the same line")
+    return indent(a:context.prev_nb_lnum)
+  elseif s:prev_ends_with(a:context, '\s\+\/>')
+    call s:debug("prev ends with a single \>")
+    return indent(a:context.prev_nb_lnum)
+  elseif s:prev_ends_with(a:context, '^[^<]*\/>')
+    call s:debug("prev line is closing a multi-line self-closing tag")
+    return indent(a:context.prev_nb_lnum) - s:sw()
+  elseif s:prev_ends_with(a:context, '^\s\+<.*\/>')
+    call s:debug("prev line is closing self-closing tag")
+    return indent(a:context.prev_nb_lnum)
+  elseif a:context.prev_nb_text =~ '^\s\+%\?>$'
+    call s:debug("prev line is a single > or %>")
+    return indent(a:context.prev_nb_lnum) + s:sw()
+  endif
+
+  " Simple HTML (ie, opening tag is not split across lines)
+  let pair_lnum = searchpair('^\s\+<[^%\/].*[^\/>]>$', '', '^\s\+<\/\w\+>$', 'bW', "line('.') == ".a:context.lnum." || s:is_string_or_comment(line('.'), col('.'))", max([0, a:context.lnum - g:elixir_indent_max_lookbehind]))
+  if pair_lnum
+    call s:debug("simple HTML")
+    if a:context.text =~ '^\s\+<\/\w\+>$'
+      return indent(pair_lnum)
+    else
+      return indent(pair_lnum) + s:sw()
+    endif
+  endif
+
+  return -1
+endfunction
+
 function! elixir#indent#handle_top_of_file(context)
   if a:context.prev_nb_lnum == 0
     return 0
diff --git a/autoload/fsharp.vim b/autoload/fsharp.vim
index 8567a037..d18f2bbc 100644
--- a/autoload/fsharp.vim
+++ b/autoload/fsharp.vim
@@ -233,6 +233,107 @@ function! fsharp#updateServerConfig()
     call s:notify('workspace/didChangeConfiguration', settings)
 endfunction
 
+function! fsharp#loadConfig()
+    if exists('s:config_is_loaded')
+        return
+    endif
+
+    if !exists('g:fsharp#fsautocomplete_command')
+        let s:fsac = fnamemodify(s:script_root_dir . "fsac/fsautocomplete.dll", ":p")
+
+        " check if FSAC exists
+        if empty(glob(s:fsac))
+            echoerr "FSAC not found. :FSharpUpdateFSAC to download."
+            let &cpo = s:cpo_save
+            finish
+        endif
+
+        let g:fsharp#fsautocomplete_command =
+            \ ['dotnet', s:fsac,
+                \ '--background-service-enabled'
+            \ ]
+    endif
+    if !exists('g:fsharp#use_recommended_server_config')
+        let g:fsharp#use_recommended_server_config = 1
+    endif
+    call fsharp#getServerConfig()
+    if !exists('g:fsharp#automatic_workspace_init')
+        let g:fsharp#automatic_workspace_init = 1
+    endif
+    if !exists('g:fsharp#automatic_reload_workspace')
+        let g:fsharp#automatic_reload_workspace = 1
+    endif
+    if !exists('g:fsharp#show_signature_on_cursor_move')
+        let g:fsharp#show_signature_on_cursor_move = 1
+    endif
+    if !exists('g:fsharp#fsi_command')
+        let g:fsharp#fsi_command = "dotnet fsi"
+    endif
+    if !exists('g:fsharp#fsi_keymap')
+        let g:fsharp#fsi_keymap = "vscode"
+    endif
+    if !exists('g:fsharp#fsi_window_command')
+        let g:fsharp#fsi_window_command = "botright 10new"
+    endif
+    if !exists('g:fsharp#fsi_focus_on_send')
+        let g:fsharp#fsi_focus_on_send = 0
+    endif
+    if !exists('g:fsharp#backend')
+        if has('nvim-0.5')
+            if exists('g:LanguageClient_loaded')
+                let g:fsharp#backend = "languageclient-neovim"
+            else
+                let g:fsharp#backend = "nvim"
+            endif
+        else
+            let g:fsharp#backend = "languageclient-neovim"
+        endif
+    endif
+
+    " backend configuration
+    if g:fsharp#backend == 'languageclient-neovim'
+        if !exists('g:LanguageClient_serverCommands')
+            let g:LanguageClient_serverCommands = {}
+        endif
+        if !has_key(g:LanguageClient_serverCommands, 'fsharp')
+            let g:LanguageClient_serverCommands.fsharp = {
+                \ 'name': 'fsautocomplete',
+                \ 'command': g:fsharp#fsautocomplete_command,
+                \ 'initializationOptions': {},
+                \}
+            if g:fsharp#automatic_workspace_init
+                let g:LanguageClient_serverCommands.fsharp.initializationOptions = {
+                    \ 'AutomaticWorkspaceInit': v:true,
+                    \}
+            endif
+        endif
+
+        if !exists('g:LanguageClient_rootMarkers')
+            let g:LanguageClient_rootMarkers = {}
+        endif
+        if !has_key(g:LanguageClient_rootMarkers, 'fsharp')
+            let g:LanguageClient_rootMarkers.fsharp = ['*.sln', '*.fsproj', '.git']
+        endif
+    elseif g:fsharp#backend == 'nvim'
+        if !exists('g:fsharp#lsp_auto_setup')
+            let g:fsharp#lsp_auto_setup = 1
+        endif
+        if !exists('g:fsharp#lsp_recommended_colorscheme')
+            let g:fsharp#lsp_recommended_colorscheme = 1
+        endif
+        if !exists('g:fsharp#lsp_codelens')
+            let g:fsharp#lsp_codelens = 1
+        endif
+
+    else
+        if g:fsharp#backend != 'disable'
+            echoerr "[FSAC] Invalid backend: " . g:fsharp#backend
+        endif
+    endif
+
+    let s:config_is_loaded = 1
+endfunction
+
 
 " handlers for notifications
 
@@ -617,7 +718,6 @@ function! fsharp#sendAllToFsi()
     return fsharp#sendFsi(text)
 endfunction
 
-
 let &cpo = s:cpo_save
 unlet s:cpo_save
 
diff --git a/autoload/polyglot/ft.vim b/autoload/polyglot/ft.vim
index 2e4c1f69..e4c32415 100644
--- a/autoload/polyglot/ft.vim
+++ b/autoload/polyglot/ft.vim
@@ -264,6 +264,13 @@ func polyglot#ft#ProtoCheck(default)
 endfunc
 
 func polyglot#ft#FTm()
+  if exists("g:filetype_m")
+    exe "setf " . g:filetype_m
+    return
+  endif
+
+  let octave_block_terminators = '\<end\%(_try_catch\|classdef\|enumeration\|events\|for\|function\|if\|methods\|parfor\|properties\|switch\|while\)\>'
+
   let n = 1
   let saw_comment = 0 " Whether we've seen a multiline comment leader.
   while n < 100
@@ -278,6 +285,13 @@ func polyglot#ft#FTm()
       setf objc
       return
     endif
+    if line =~ '^\s*\%(#\|%!\|[#%]{\=\s*$\)' ||
+	  \ line =~ '^\s*unwind_protect\>' ||
+	  \ line =~ '\%(^\|;\)\s*' .. octave_block_terminators
+      setf octave
+      return
+    endif
+    " TODO: could be Matlab or Octave
     if line =~ '^\s*%'
       setf matlab
       return
@@ -298,11 +312,8 @@ func polyglot#ft#FTm()
     " or Murphi based on the comment leader. Assume the former as it is more
     " common.
     setf objc
-  elseif exists("g:filetype_m")
-    " Use user specified default filetype for .m
-    exe "setf " . g:filetype_m
   else
-    " Default is matlab
+    " Default is Matlab
     setf matlab
   endif
 endfunc
diff --git a/autoload/polyglot/init.vim b/autoload/polyglot/init.vim
index 04353964..d739ae7b 100644
--- a/autoload/polyglot/init.vim
+++ b/autoload/polyglot/init.vim
@@ -2265,7 +2265,7 @@ if !has_key(g:polyglot_is_disabled, 'jsonnet')
 endif
 
 if !has_key(g:polyglot_is_disabled, 'json')
-  au BufNewFile,BufRead *.JSON-tmLanguage,*.avsc,*.geojson,*.gltf,*.har,*.ice,*.json,*.jsonl,*.jsonp,*.mcmeta,*.template,*.tfstate,*.tfstate.backup,*.topojson,*.webapp,*.webmanifest,*.yy,*.yyp,{.,}arcconfig,{.,}htmlhintrc,{.,}imgbotconfig,{.,}tern-config,{.,}tern-project,{.,}watchmanconfig,Pipfile.lock,composer.lock,mcmod.info setf json
+  au BufNewFile,BufRead *.JSON-tmLanguage,*.avsc,*.geojson,*.gltf,*.har,*.ice,*.json,*.jsonl,*.jsonp,*.mcmeta,*.template,*.tfstate,*.tfstate.backup,*.topojson,*.webapp,*.webmanifest,*.yy,*.yyp,{.,}arcconfig,{.,}auto-changelog,{.,}c8rc,{.,}htmlhintrc,{.,}imgbotconfig,{.,}nycrc,{.,}tern-config,{.,}tern-project,{.,}watchmanconfig,Pipfile.lock,composer.lock,mcmod.info setf json
 endif
 
 if !has_key(g:polyglot_is_disabled, 'json5')
diff --git a/autoload/polyglot/sleuth.vim b/autoload/polyglot/sleuth.vim
index bf3166a4..a7a5b86a 100644
--- a/autoload/polyglot/sleuth.vim
+++ b/autoload/polyglot/sleuth.vim
@@ -264,7 +264,7 @@ let s:globs = {
   \ 'jovial': '*.jov,*.j73,*.jovial',
   \ 'jproperties': '*.properties,*.properties_??,*.properties_??_??,*.properties_??_??_*',
   \ 'jq': '*.jq,.jqrc,.jqrc*',
-  \ 'json': '*.json,*.avsc,*.geojson,*.gltf,*.har,*.ice,*.JSON-tmLanguage,*.jsonl,*.mcmeta,*.tfstate,*.tfstate.backup,*.topojson,*.webapp,*.webmanifest,*.yy,*.yyp,*.jsonp,*.template,.arcconfig,.htmlhintrc,.imgbotconfig,.tern-config,.tern-project,.watchmanconfig,Pipfile.lock,composer.lock,mcmod.info',
+  \ 'json': '*.json,*.avsc,*.geojson,*.gltf,*.har,*.ice,*.JSON-tmLanguage,*.jsonl,*.mcmeta,*.tfstate,*.tfstate.backup,*.topojson,*.webapp,*.webmanifest,*.yy,*.yyp,*.jsonp,*.template,.arcconfig,.auto-changelog,.c8rc,.htmlhintrc,.imgbotconfig,.nycrc,.tern-config,.tern-project,.watchmanconfig,Pipfile.lock,composer.lock,mcmod.info',
   \ 'json5': '*.json5',
   \ 'jsonc': '*.cjson,*.jsonc,coc-settings.json,.eslintrc.json,.babelrc,.jshintrc,.jslintrc,.mocharc.json,coffeelint.json,tsconfig.json,jsconfig.json',
   \ 'jsonnet': '*.jsonnet,*.libsonnet',
diff --git a/extras/filetype.vim b/extras/filetype.vim
index 19f4a4ed..6ef1fa21 100644
--- a/extras/filetype.vim
+++ b/extras/filetype.vim
@@ -1,7 +1,7 @@
 " Vim support file to detect file types
 "
 " Maintainer:	Bram Moolenaar <Bram@vim.org>
-" Last Change:	2021 Jul 03
+" Last Change:	2021 Aug 23
 
 " Listen very carefully, I will say this only once
 if exists("did_load_filetypes")
@@ -537,8 +537,13 @@ au BufNewFile,BufRead *.drac,*.drc,*lvs,*lpe	setf dracula
 " Datascript
 au BufNewFile,BufRead *.ds			setf datascript
 
-" dsl
-au BufNewFile,BufRead *.dsl			setf dsl
+" dsl: DSSSL or Structurizr
+au BufNewFile,BufRead *.dsl
+	\ if getline(1) =~ '^\s*<\!' |
+	\   setf dsl |
+	\ else |
+	\   setf structurizr |
+	\ endif
 
 " DTD (Document Type Definition for XML)
 au BufNewFile,BufRead *.dtd			setf dtd
@@ -874,6 +879,9 @@ au BufNewFile,BufRead *.ipynb				setf json
 " JSONC
 au BufNewFile,BufRead *.jsonc			setf jsonc
 
+" Julia
+au BufNewFile,BufRead *.jl			setf julia
+
 " Kixtart
 au BufNewFile,BufRead *.kix			setf kix
 
@@ -1021,7 +1029,7 @@ au BufNewFile,BufRead *.markdown,*.mdown,*.mkd,*.mkdn,*.mdwn,*.md  setf markdown
 " Mason
 au BufNewFile,BufRead *.mason,*.mhtml,*.comp	setf mason
 
-" Mathematica, Matlab, Murphi or Objective C
+" Mathematica, Matlab, Murphi, Objective C or Octave
 au BufNewFile,BufRead *.m			call polyglot#ft#FTm()
 
 " Mathematica notebook
@@ -1167,6 +1175,9 @@ au BufNewFile,BufRead *.ml,*.mli,*.mll,*.mly,.ocamlinit,*.mlt,*.mlp,*.mlip,*.mli
 " Occam
 au BufNewFile,BufRead *.occ			setf occam
 
+" Octave
+au BufNewFile,BufRead octave.conf,.octaverc,octaverc	setf octave
+
 " Omnimark
 au BufNewFile,BufRead *.xom,*.xin		setf omnimark
 
@@ -1375,6 +1386,9 @@ au BufNewFile,BufRead *.pk			setf poke
 " Protocols
 au BufNewFile,BufRead */etc/protocols		setf protocols
 
+" Pyret
+au BufNewFile,BufRead *.arr			setf pyret
+
 " Pyrex
 au BufNewFile,BufRead *.pyx,*.pxd		setf pyrex
 
@@ -1523,6 +1537,9 @@ au BufNewFile,BufRead *.sbt			setf sbt
 " Scilab
 au BufNewFile,BufRead *.sci,*.sce		setf scilab
 
+" scdoc
+au BufNewFile,BufRead *.scd			setf scdoc
+
 " SCSS
 au BufNewFile,BufRead *.scss			setf scss
 
@@ -1612,7 +1629,7 @@ au BufNewFile,BufRead .zshrc,.zshenv,.zlogin,.zlogout,.zcompdump setf zsh
 au BufNewFile,BufRead *.zsh			setf zsh
 
 " Scheme
-au BufNewFile,BufRead *.scm,*.ss,*.rkt		setf scheme
+au BufNewFile,BufRead *.scm,*.ss,*.rkt,*.rktd,*.rktl 	setf scheme
 
 " Screen RC
 au BufNewFile,BufRead .screenrc,screenrc	setf screen
diff --git a/ftplugin/eelixir.vim b/ftplugin/eelixir.vim
index 6e1d13fd..d8fb2631 100644
--- a/ftplugin/eelixir.vim
+++ b/ftplugin/eelixir.vim
@@ -24,13 +24,16 @@ if !exists("b:eelixir_subtype")
     let b:eelixir_subtype = matchstr(&filetype,'^eex\.\zs\w\+')
   endif
   if b:eelixir_subtype == ''
+    let b:eelixir_subtype = matchstr(&filetype,'^heex\.\zs\w\+')
+  endif
+  if b:eelixir_subtype == ''
     let b:eelixir_subtype = matchstr(&filetype,'^leex\.\zs\w\+')
   endif
   if b:eelixir_subtype == ''
     let b:eelixir_subtype = matchstr(&filetype,'^sface\.\zs\w\+')
   endif
   if b:eelixir_subtype == ''
-    let b:eelixir_subtype = matchstr(substitute(expand("%:t"),'\c\%(\.eex\|\.sface\|\.leex\|\.eelixir\)\+$','',''),'\.\zs\w\+$')
+    let b:eelixir_subtype = matchstr(substitute(expand("%:t"),'\c\%(\.eex\|\.heex\|\.leex\|\.sface\|\.eelixir\)\+$','',''),'\.\zs\w\+$')
   endif
   if b:eelixir_subtype == 'ex'
     let b:eelixir_subtype = 'elixir'
diff --git a/ftplugin/elixir.vim b/ftplugin/elixir.vim
index cd25464a..253d522e 100644
--- a/ftplugin/elixir.vim
+++ b/ftplugin/elixir.vim
@@ -33,7 +33,7 @@ let &l:path =
       \   &g:path
       \ ], ',')
 setlocal includeexpr=elixir#util#get_filename(v:fname)
-setlocal suffixesadd=.ex,.exs,.eex,.leex,.sface,.erl,.xrl,.yrl,.hrl
+setlocal suffixesadd=.ex,.exs,.eex,.heex,.leex,.sface,.erl,.xrl,.yrl,.hrl
 
 let &l:define = 'def\(macro\|guard\|delegate\)\=p\='
 
diff --git a/ftplugin/julia.vim b/ftplugin/julia.vim
index 39126598..dd84aa70 100644
--- a/ftplugin/julia.vim
+++ b/ftplugin/julia.vim
@@ -13,7 +13,7 @@ endif
 let b:did_ftplugin = 1
 
 let s:save_cpo = &cpo
-set cpo-=C
+set cpo&vim
 
 setlocal include=^\\s*\\%(reload\\\|include\\)\\>
 setlocal suffixesadd=.jl
@@ -89,7 +89,6 @@ if exists("loaded_matchit")
         \ . " | unlet! b:match_words b:match_skip b:match_ignorecase"
         \ . " | unlet! b:julia_begin_keywords b:julia_end_keywords"
         \ . " | delfunction JuliaGetMatchWords"
-        \ . " | call julia_blocks#remove_mappings()"
 
   if get(g:, "julia_blocks", 1)
     call julia_blocks#init_mappings()
diff --git a/ftplugin/juliadoc.vim b/ftplugin/juliadoc.vim
index 5b80149c..161545d1 100644
--- a/ftplugin/juliadoc.vim
+++ b/ftplugin/juliadoc.vim
@@ -11,7 +11,7 @@ endif
 let b:did_ftplugin = 1
 
 let s:save_cpo = &cpo
-set cpo-=C
+set cpo&vim
 
 setlocal conceallevel=2
 setlocal concealcursor=nc
diff --git a/ftplugin/ocaml.vim b/ftplugin/ocaml.vim
index 6babcef8..6ce2adcb 100644
--- a/ftplugin/ocaml.vim
+++ b/ftplugin/ocaml.vim
@@ -373,7 +373,7 @@ endfunction
               endif
             else
               let annot_file_name = ''
-              "(Pierre Vittet: I have commented 4b because this was chrashing
+              "(Pierre Vittet: I have commented 4b because this was crashing
               "my vim (it produced infinite loop))
               "
               " 4b. anarchy : the renamed _build directory may be higher in the hierarchy
@@ -464,8 +464,8 @@ endfunction
 
   "b. 'search' and 'match' work to find the type information
 
-      "In:  - lin1,col1: postion of expression first char
-      "     - lin2,col2: postion of expression last char
+      "In:  - lin1,col1: position of expression first char
+      "     - lin2,col2: position of expression last char
       "Out: - the pattern to be looked for to find the block
       " Must be called in the source buffer (use of line2byte)
     function! s:Block_pattern(lin1,lin2,col1,col2)
@@ -583,7 +583,7 @@ endfunction
       let res = substitute (a:res, "\n", "", "g" )
       "remove double space
       let res =substitute(res , "  ", " ", "g")
-      "remove space at begining of string.
+      "remove space at beginning of string.
       let res = substitute(res, "^ *", "", "g")
       return res
     endfunction
diff --git a/ftplugin/puppet.vim b/ftplugin/puppet.vim
index 5316cf5e..a57fe491 100644
--- a/ftplugin/puppet.vim
+++ b/ftplugin/puppet.vim
@@ -18,9 +18,11 @@ setlocal softtabstop=2
 setlocal shiftwidth=2
 setlocal expandtab
 setlocal keywordprg=puppet\ describe\ --providers
-setlocal iskeyword=:,@,48-57,_,192-255
 setlocal comments=sr:/*,mb:*,ex:*/,b:#
 setlocal commentstring=#\ %s
+" adding : to iskeyword is tempting in order to make word movements skip over a
+" full resource name, however since : is used in many non-keyword contexts it
+" is a bad idea to add it to the option.
 
 setlocal formatoptions-=t formatoptions+=croql
 setlocal formatexpr=puppet#format#Format()
diff --git a/ftplugin/scheme.vim b/ftplugin/scheme.vim
index a5506d3a..a2e8345c 100644
--- a/ftplugin/scheme.vim
+++ b/ftplugin/scheme.vim
@@ -4,10 +4,11 @@ endif
 
 " Vim filetype plugin file
 " Language: Scheme (R7RS)
-" Last Change: 2019 Nov 18
+" Last Change: 2019-11-19
 " Author: Evan Hanson <evhan@foldling.org>
 " Maintainer: Evan Hanson <evhan@foldling.org>
 " Previous Maintainer: Sergey Khorev <sergey.khorev@gmail.com>
+" Repository: https://git.foldling.org/vim-scheme.git
 " URL: https://foldling.org/vim/ftplugin/scheme.vim
 
 if exists('b:did_ftplugin')
@@ -52,7 +53,7 @@ let b:undo_ftplugin = b:undo_ftplugin . ' lispwords<'
 let b:did_scheme_ftplugin = 1
 
 if exists('b:is_chicken') || exists('g:is_chicken')
-  exe 'ru! ftplugin/chicken.vim'
+  runtime! ftplugin/chicken.vim
 endif
 
 unlet b:did_scheme_ftplugin
diff --git a/ftplugin/toml.vim b/ftplugin/toml.vim
deleted file mode 100644
index 8d45ea77..00000000
--- a/ftplugin/toml.vim
+++ /dev/null
@@ -1,25 +0,0 @@
-if polyglot#init#is_disabled(expand('<sfile>:p'), 'toml', 'ftplugin/toml.vim')
-  finish
-endif
-
-" File: ftplugin/toml.vim
-" Author: Kevin Ballard <kevin@sb.org>
-" Description: FileType Plugin for Toml
-" Last Change: Feb 12, 2019
-
-if exists('b:did_ftplugin')
-    finish
-endif
-let b:did_ftplugin = 1
-
-let s:save_cpo = &cpo
-set cpo&vim
-let b:undo_ftplugin = 'setlocal commentstring< comments<'
-
-setlocal commentstring=#\ %s
-setlocal comments=:#
-
-let &cpo = s:save_cpo
-unlet s:save_cpo
-
-" vim: set et sw=4 ts=4:
diff --git a/ftplugin/typescript.vim b/ftplugin/typescript.vim
index fe0c7b8d..ce1de1d9 100644
--- a/ftplugin/typescript.vim
+++ b/ftplugin/typescript.vim
@@ -47,7 +47,7 @@ function! Fixedgq(lnum, count)
         return 1
     endif
 
-    " Put all the lines on one line and do normal spliting after that
+    " Put all the lines on one line and do normal splitting after that
     if l:count > 1
         while l:count > 1
             let l:count -= 1
diff --git a/indent/bzl.vim b/indent/bzl.vim
index 8780cc54..6a6ccb61 100644
--- a/indent/bzl.vim
+++ b/indent/bzl.vim
@@ -5,7 +5,7 @@ endif
 " Vim indent file
 " Language:	Bazel (http://bazel.io)
 " Maintainer:	David Barnett (https://github.com/google/vim-ft-bzl)
-" Last Change:	2017 Jun 13
+" Last Change:	2021 Jul 08
 
 if exists('b:did_indent')
   finish
@@ -45,30 +45,41 @@ function GetBzlIndent(lnum) abort
     if exists('g:pyindent_open_paren')
       let l:pyindent_open_paren = g:pyindent_open_paren
     endif
-    let g:pyindent_nested_paren = 'shiftwidth() * 2'
-    let g:pyindent_open_paren = 'shiftwidth() * 2'
+    let g:pyindent_nested_paren = 'shiftwidth()'
+    let g:pyindent_open_paren = 'shiftwidth()'
   endif
 
   let l:indent = -1
 
-  " Indent inside parens.
-  " Align with the open paren unless it is at the end of the line.
-  " E.g.
-  "   open_paren_not_at_EOL(100,
-  "                         (200,
-  "                          300),
-  "                         400)
-  "   open_paren_at_EOL(
-  "       100, 200, 300, 400)
   call cursor(a:lnum, 1)
   let [l:par_line, l:par_col] = searchpairpos('(\|{\|\[', '', ')\|}\|\]', 'bW',
       \ "line('.') < " . (a:lnum - s:maxoff) . " ? dummy :" .
       \ " synIDattr(synID(line('.'), col('.'), 1), 'name')" .
       \ " =~ '\\(Comment\\|String\\)$'")
   if l:par_line > 0
-    call cursor(l:par_line, 1)
-    if l:par_col != col('$') - 1
-      let l:indent = l:par_col
+    " Indent inside parens.
+    if searchpair('(\|{\|\[', '', ')\|}\|\]', 'W',
+      \ "line('.') < " . (a:lnum - s:maxoff) . " ? dummy :" .
+      \ " synIDattr(synID(line('.'), col('.'), 1), 'name')" .
+      \ " =~ '\\(Comment\\|String\\)$'") && line('.') == a:lnum
+      " If cursor is at close parens, match indent with open parens.
+      " E.g.
+      "   foo(
+      "   )
+      let l:indent = indent(l:par_line)
+    else
+      " Align with the open paren unless it is at the end of the line.
+      " E.g.
+      "   open_paren_not_at_EOL(100,
+      "                         (200,
+      "                          300),
+      "                         400)
+      "   open_paren_at_EOL(
+      "       100, 200, 300, 400)
+      call cursor(l:par_line, 1)
+      if l:par_col != col('$') - 1
+        let l:indent = l:par_col
+      endif
     endif
   endif
 
diff --git a/indent/elixir.vim b/indent/elixir.vim
index 4ff1257a..d342e82d 100644
--- a/indent/elixir.vim
+++ b/indent/elixir.vim
@@ -10,7 +10,7 @@ let b:did_indent = 1
 setlocal indentexpr=elixir#indent(v:lnum)
 
 setlocal indentkeys+==after,=catch,=do,=else,=end,=rescue,
-setlocal indentkeys+=*<Return>,=->,=\|>,=<>,0},0],0)
+setlocal indentkeys+=*<Return>,=->,=\|>,=<>,0},0],0),>
 
 " TODO: @jbodah 2017-02-27: all operators should cause reindent when typed
 
diff --git a/indent/erlang.vim b/indent/erlang.vim
index 1636cc57..5a5637a7 100644
--- a/indent/erlang.vim
+++ b/indent/erlang.vim
@@ -61,7 +61,7 @@ endfunction
 " ======================
 
 " Indtokens are "indentation tokens". See their exact format in the
-" documentaiton of the s:GetTokensFromLine function.
+" documentation of the s:GetTokensFromLine function.
 
 " Purpose:
 "   Calculate the new virtual column after the given segment of a line.
@@ -79,7 +79,7 @@ endfunction
 "   s:CalcVCol("\t'\tx', b", 1, 4, 4)  -> 10
 function! s:CalcVCol(line, first_index, last_index, vcol, tabstop)
 
-  " We copy the relevent segment of the line, otherwise if the line were
+  " We copy the relevant segment of the line, otherwise if the line were
   " e.g. `"\t", term` then the else branch below would consume the `", term`
   " part at once.
   let line = a:line[a:first_index : a:last_index]
@@ -608,7 +608,7 @@ endfunction
 function! s:BeginElementFoundIfEmpty(stack, token, curr_vcol, stored_vcol, sw)
   if empty(a:stack)
     if a:stored_vcol ==# -1
-      call s:Log('    "' . a:token . '" directly preceeds LTI -> return')
+      call s:Log('    "' . a:token . '" directly precedes LTI -> return')
       return [1, a:curr_vcol + a:sw]
     else
       call s:Log('    "' . a:token .
@@ -829,7 +829,7 @@ function! s:ErlangCalcIndent2(lnum, stack)
         if ret | return res | endif
 
         if stored_vcol ==# -1
-          call s:Log('    End of clause directly preceeds LTI -> return')
+          call s:Log('    End of clause directly precedes LTI -> return')
           return 0
         else
           call s:Log('    End of clause (but not end of line) -> return')
diff --git a/indent/ruby.vim b/indent/ruby.vim
index e4a295fd..a2d8814e 100644
--- a/indent/ruby.vim
+++ b/indent/ruby.vim
@@ -287,7 +287,7 @@ function! GetRubyIndent(...) abort
         \ ]
 
   " Most Significant line based on the previous one -- in case it's a
-  " contination of something above
+  " continuation of something above
   let indent_info.plnum_msl = s:GetMSL(indent_info.plnum)
 
   for callback_name in indent_callback_names
diff --git a/indent/scala.vim b/indent/scala.vim
index 4ff04daa..cba01f40 100644
--- a/indent/scala.vim
+++ b/indent/scala.vim
@@ -416,19 +416,19 @@ function! GetScalaIndent()
     if prevline =~ '^\s*\.'
       return ind
     else
-      return ind + &shiftwidth
+      return ind + shiftwidth()
     endif
   endif
 
   " Indent html literals
   if prevline !~ '/>\s*$' && prevline =~ '^\s*<[a-zA-Z][^>]*>\s*$'
     call scala#ConditionalConfirm("3")
-    return ind + &shiftwidth
+    return ind + shiftwidth()
   endif
 
   " assumes curly braces around try-block
   if curline =~ '^\s*}\s*\<catch\>'
-    return ind - &shiftwidth
+    return ind - shiftwidth()
   elseif curline =~ '^\s*\<catch\>'
     return ind
   endif
@@ -442,7 +442,7 @@ function! GetScalaIndent()
         \ || prevline =~ '^\s*\%(}\s*\)\?\<else\>\s*$'
         \ || prevline =~ '=\s*$'
     call scala#ConditionalConfirm("4")
-    let ind = ind + &shiftwidth
+    let ind = ind + shiftwidth()
   elseif prevline =~ '^\s*\<\%(}\?\s*else\s\+\)\?if\>' && curline =~ '^\s*}\?\s*\<else\>'
     return ind
   endif
@@ -451,7 +451,7 @@ function! GetScalaIndent()
   let bracketCount = scala#CountBrackets(prevline, '{', '}')
   if bracketCount > 0 || prevline =~ '.*{\s*$'
     call scala#ConditionalConfirm("5b")
-    let ind = ind + &shiftwidth
+    let ind = ind + shiftwidth()
   elseif bracketCount < 0
     call scala#ConditionalConfirm("6b")
     " if the closing brace actually completes the braces entirely, then we
@@ -479,7 +479,7 @@ function! GetScalaIndent()
     let bracketCount = scala#CountBrackets(prevline, '(', ')')
     if bracketCount > 0 || prevline =~ '.*(\s*$'
       call scala#ConditionalConfirm("5a")
-      let ind = ind + &shiftwidth
+      let ind = ind + shiftwidth()
     elseif bracketCount < 0
       call scala#ConditionalConfirm("6a")
       " if the closing brace actually completes the braces entirely, then we
@@ -501,7 +501,7 @@ function! GetScalaIndent()
       else
         " This is the only part that's different from from the '{', '}' one below
         " Yup... some refactoring is necessary at some point.
-        let ind = ind + (bracketCount * &shiftwidth)
+        let ind = ind + (bracketCount * shiftwidth())
         let lineCompletedBrackets = 1
       endif
     endif
@@ -510,7 +510,7 @@ function! GetScalaIndent()
   if curline =~ '^\s*}\?\s*\<else\>\%(\s\+\<if\>\s*(.*)\)\?\s*{\?\s*$' &&
    \ ! scala#LineIsCompleteIf(prevline) &&
    \ prevline !~ '^.*}\s*$'
-    let ind = ind - &shiftwidth
+    let ind = ind - shiftwidth()
   endif
 
   " Subtract a 'shiftwidth' on '}' or html
@@ -521,7 +521,7 @@ function! GetScalaIndent()
     return indent(matchline)
   elseif curline =~ '^\s*</[a-zA-Z][^>]*>'
     call scala#ConditionalConfirm("14c")
-    return ind - &shiftwidth
+    return ind - shiftwidth()
   endif
 
   let prevParenCount = scala#CountParens(prevline)
@@ -533,7 +533,7 @@ function! GetScalaIndent()
   let prevCurlyCount = scala#CountCurlies(prevline)
   if prevCurlyCount == 0 && prevline =~ '^.*\%(=>\|⇒\)\s*$' && prevline !~ '^\s*this\s*:.*\%(=>\|⇒\)\s*$' && curline !~ '^\s*\<case\>'
     call scala#ConditionalConfirm("16")
-    let ind = ind + &shiftwidth
+    let ind = ind + shiftwidth()
   endif
 
   if ind == originalIndentValue && curline =~ '^\s*\<case\>'
@@ -559,7 +559,7 @@ function! GetScalaIndent()
   if scala#LineIsAClosingXML(prevline)
     if scala#LineCompletesXML(prevlnum, prevline)
       call scala#ConditionalConfirm("20a")
-      return ind - &shiftwidth
+      return ind - shiftwidth()
     else
       call scala#ConditionalConfirm("20b")
       return ind
@@ -570,7 +570,7 @@ function! GetScalaIndent()
     "let indentMultiplier = scala#LineCompletesDefValr(prevlnum, prevline)
     "if indentMultiplier != 0
     "  call scala#ConditionalConfirm("19a")
-    "  let ind = ind - (indentMultiplier * &shiftwidth)
+    "  let ind = ind - (indentMultiplier * shiftwidth())
     let defValrLine = scala#Test(prevlnum, prevline, '{', '}')
     if defValrLine != -1
       call scala#ConditionalConfirm("21a")
@@ -579,10 +579,10 @@ function! GetScalaIndent()
       call scala#ConditionalConfirm("21b")
       if scala#GetLine(prevnonblank(prevlnum - 1)) =~ '^.*\<else\>\s*\%(//.*\)\?$'
         call scala#ConditionalConfirm("21c")
-        let ind = ind - &shiftwidth
+        let ind = ind - shiftwidth()
       elseif scala#LineCompletesIfElse(prevlnum, prevline)
         call scala#ConditionalConfirm("21d")
-        let ind = ind - &shiftwidth
+        let ind = ind - shiftwidth()
       elseif scala#CountParens(curline) < 0 && curline =~ '^\s*)' && scala#GetLine(scala#GetLineThatMatchesBracket('(', ')')) =~ '.*(\s*$'
         " Handles situations that look like this:
         " 
@@ -596,7 +596,7 @@ function! GetScalaIndent()
         "     10
         "   ).somethingHere()
         call scala#ConditionalConfirm("21e")
-        let ind = ind - &shiftwidth
+        let ind = ind - shiftwidth()
       endif
     endif
   endif
diff --git a/syntax/aptconf.vim b/syntax/aptconf.vim
index 309b8faa..70f9d1c9 100644
--- a/syntax/aptconf.vim
+++ b/syntax/aptconf.vim
@@ -5,7 +5,7 @@ endif
 " Vim syntax file
 " Language:	APT config file
 " Maintainer:	Yann Amar <quidame@poivron.org>
-" Last Change:	2015 Dec 22
+" Last Change:	2021 Jul 12
 
 " quit when a syntax file was already loaded
 if !exists("main_syntax")
@@ -400,10 +400,13 @@ syn cluster	aptconfSynaptic_ contains=aptconfSynaptic,
 " }}}
 " Unattended Upgrade: {{{
 syn keyword	aptconfUnattendedUpgrade contained
-	\ AutoFixInterruptedDpkg Automatic-Reboot Automatic-Reboot-Time
-	\ Automatic-Reboot-WithUsers InstallOnShutdown Mail MailOnlyOnError
-	\ MinimalSteps Origins-Pattern Package-Blacklist
-	\ Remove-Unused-Dependencies
+	\ Allow-APT-Mark-Fallback Allow-downgrade AutoFixInterruptedDpkg
+	\ Automatic-Reboot Automatic-Reboot-Time Automatic-Reboot-WithUsers
+	\ Debug InstallOnShutdown Mail MailOnlyOnError MailReport MinimalSteps
+	\ OnlyOnACPower Origins-Pattern Package-Blacklist
+	\ Remove-New-Unused-Dependencies Remove-Unused-Dependencies
+	\ Remove-Unused-Kernel-Packages Skip-Updates-On-Metered-Connections
+	\ SyslogEnable SyslogFacility Verbose
 
 syn cluster	aptconfUnattendedUpgrade_ contains=aptconfUnattendedUpgrade
 " }}}
diff --git a/syntax/c.vim b/syntax/c.vim
index a11a95a2..71474600 100644
--- a/syntax/c.vim
+++ b/syntax/c.vim
@@ -5,7 +5,7 @@ endif
 " Vim syntax file
 " Language:	C
 " Maintainer:	Bram Moolenaar <Bram@vim.org>
-" Last Change:	2021 Jan 11
+" Last Change:	2021 May 24
 
 " Quit when a (custom) syntax file was already loaded
 if exists("b:current_syntax")
@@ -418,6 +418,9 @@ if exists("c_autodoc")
   syn cluster cPreProcGroup add=cAutodocReal
 endif
 
+" be able to fold #pragma regions
+syn region	cPragma		start="^\s*#pragma\s\+region\>" end="^\s*#pragma\s\+endregion\>" transparent keepend extend fold
+
 " Highlight User Labels
 syn cluster	cMultiGroup	contains=cIncluded,cSpecial,cCommentSkip,cCommentString,cComment2String,@cCommentGroup,cCommentStartError,cUserCont,cUserLabel,cBitField,cOctalZero,cCppOutWrapper,cCppInWrapper,@cCppOutInGroup,cFormat,cNumber,cFloat,cOctal,cOctalError,cNumbersCom,cCppParen,cCppBracket,cCppString
 if s:ft ==# 'c' || exists("cpp_no_cpp11")
diff --git a/syntax/cpp.vim b/syntax/cpp.vim
index 95a56d36..db95a78d 100644
--- a/syntax/cpp.vim
+++ b/syntax/cpp.vim
@@ -64,7 +64,7 @@ if !exists("cpp_no_cpp14")
   syn match cppFloat		display contained "\<\d\+\.\d*\(e[-+]\=\d\+\)\=\([FfLl]\|i[fl]\=\|h\|min\|s\|ms\|us\|ns\|_\i*\)\=\>"
   syn match cppFloat		display contained "\<\.\d\+\(e[-+]\=\d\+\)\=\([FfLl]\|i[fl]\=\|h\|min\|s\|ms\|us\|ns\|_\i*\)\=\>"
   syn match cppFloat		display contained "\<\d\+e[-+]\=\d\+\([FfLl]\|i[fl]\=\|h\|min\|s\|ms\|us\|ns\|_\i*\)\=\>"
-  syn region cppString		start=+\(L\|u\|u8\|U\|R\|LR\|u8R\|uR\|UR\)\="+ skip=+\\\\\|\\"\|\\$+ excludenl end=+"\(sv\|s\|_\i*\)\=+ end='$' contains=cSpecial,cFormat,@Spell
+  syn region cppString		start=+\(L\|u\|u8\|U\)\="+ skip=+\\\\\|\\"\|\\$+ excludenl end=+"\(sv\|s\|_\i*\)\=+ end='$' contains=cSpecial,cFormat,@Spell
 endif
 
 " C++ 17 extensions
@@ -73,6 +73,20 @@ if !exists("cpp_no_cpp17")
   syn match cppCast		"\<reinterpret_pointer_cast\s*$"
   syn match cppFloat		display contained "\<0x\x*\.\x\+p[-+]\=\d\+\([FfLl]\|i[fl]\=\|h\|min\|s\|ms\|us\|ns\|_\i*\)\=\>"
   syn match cppFloat		display contained "\<0x\x\+\.\=p[-+]\=\d\+\([FfLl]\|i[fl]\=\|h\|min\|s\|ms\|us\|ns\|_\i*\)\=\>"
+
+  " TODO: push this up to c.vim if/when supported in C23
+  syn match cppCharacter	"u8'[^\\]'"
+  syn match cppCharacter	"u8'[^']*'" contains=cSpecial
+  if exists("c_gnu")
+    syn match cppSpecialError	  "u8'\\[^'\"?\\abefnrtv]'"
+    syn match cppSpecialCharacter "u8'\\['\"?\\abefnrtv]'"
+  else
+    syn match cppSpecialError	  "u8'\\[^'\"?\\abfnrtv]'"
+    syn match cppSpecialCharacter "u8'\\['\"?\\abfnrtv]'"
+  endif
+  syn match cppSpecialCharacter display "u8'\\\o\{1,3}'"
+  syn match cppSpecialCharacter display "u8'\\x\x\+'"
+
 endif
 
 " C++ 20 extensions
@@ -93,23 +107,26 @@ endif
 syn match cppMinMax "[<>]?"
 
 " Default highlighting
-hi def link cppAccess		cppStatement
-hi def link cppCast		cppStatement
+hi def link cppAccess			cppStatement
+hi def link cppCast			cppStatement
 hi def link cppExceptions		Exception
-hi def link cppOperator		Operator
+hi def link cppOperator			Operator
 hi def link cppStatement		Statement
-hi def link cppModifier		Type
-hi def link cppType		Type
-hi def link cppStorageClass	StorageClass
+hi def link cppModifier			Type
+hi def link cppType			Type
+hi def link cppStorageClass		StorageClass
 hi def link cppStructure		Structure
-hi def link cppBoolean		Boolean
-hi def link cppConstant		Constant
+hi def link cppBoolean			Boolean
+hi def link cppCharacter		cCharacter
+hi def link cppSpecialCharacter		cSpecialCharacter
+hi def link cppSpecialError		cSpecialError
+hi def link cppConstant			Constant
 hi def link cppRawStringDelimiter	Delimiter
 hi def link cppRawString		String
-hi def link cppString		String
-hi def link cppNumber		Number
-hi def link cppFloat		Number
-hi def link cppModule		Include
+hi def link cppString			String
+hi def link cppNumber			Number
+hi def link cppFloat			Number
+hi def link cppModule			Include
 
 let b:current_syntax = "cpp"
 
diff --git a/syntax/debchangelog.vim b/syntax/debchangelog.vim
index 174d86d7..a6b5c871 100644
--- a/syntax/debchangelog.vim
+++ b/syntax/debchangelog.vim
@@ -7,7 +7,7 @@ endif
 " Maintainer:  Debian Vim Maintainers
 " Former Maintainers: Gerfried Fuchs <alfie@ist.org>
 "                     Wichert Akkerman <wakkerma@debian.org>
-" Last Change: 2020 Nov 28
+" Last Change: 2021 Aug 03
 " URL: https://salsa.debian.org/vim-team/vim-debian/blob/master/syntax/debchangelog.vim
 
 " Standard syntax initialization
@@ -28,7 +28,7 @@ let s:supported = [
       \ 'jessie', 'stretch', 'buster', 'bullseye', 'bookworm',
       \ 'trixie', 'sid', 'rc-buggy',
       \
-      \ 'trusty', 'xenial', 'bionic', 'focal', 'groovy', 'hirsute', 'devel'
+      \ 'trusty', 'xenial', 'bionic', 'focal', 'hirsute', 'impish', 'devel'
       \ ]
 let s:unsupported = [
       \ 'frozen', 'buzz', 'rex', 'bo', 'hamm', 'slink', 'potato',
@@ -38,7 +38,7 @@ let s:unsupported = [
       \ 'gutsy', 'hardy', 'intrepid', 'jaunty', 'karmic', 'lucid',
       \ 'maverick', 'natty', 'oneiric', 'precise', 'quantal', 'raring', 'saucy',
       \ 'utopic', 'vivid', 'wily', 'yakkety', 'zesty', 'artful', 'cosmic',
-      \ 'disco', 'eoan'
+      \ 'disco', 'eoan', 'groovy'
       \ ]
 let &cpo=s:cpo
 
diff --git a/syntax/debsources.vim b/syntax/debsources.vim
index 6ea0bcb1..f8ed8d99 100644
--- a/syntax/debsources.vim
+++ b/syntax/debsources.vim
@@ -6,7 +6,7 @@ endif
 " Language:     Debian sources.list
 " Maintainer:   Debian Vim Maintainers
 " Former Maintainer: Matthijs Mohlmann <matthijs@cacholong.nl>
-" Last Change: 2020 Nov 28
+" Last Change: 2021 Aug 03
 " URL: https://salsa.debian.org/vim-team/vim-debian/blob/master/syntax/debsources.vim
 
 " Standard syntax initialization
@@ -30,7 +30,7 @@ let s:supported = [
       \ 'jessie', 'stretch', 'buster', 'bullseye', 'bookworm',
       \ 'trixie', 'sid', 'rc-buggy',
       \
-      \ 'trusty', 'xenial', 'bionic', 'focal', 'groovy', 'hirsute', 'devel'
+      \ 'trusty', 'xenial', 'bionic', 'focal', 'hirsute', 'impish', 'devel'
       \ ]
 let s:unsupported = [
       \ 'buzz', 'rex', 'bo', 'hamm', 'slink', 'potato',
@@ -40,7 +40,7 @@ let s:unsupported = [
       \ 'gutsy', 'hardy', 'intrepid', 'jaunty', 'karmic', 'lucid',
       \ 'maverick', 'natty', 'oneiric', 'precise', 'quantal', 'raring', 'saucy',
       \ 'utopic', 'vivid', 'wily', 'yakkety', 'zesty', 'artful', 'cosmic',
-      \ 'disco', 'eoan'
+      \ 'disco', 'eoan', 'groovy'
       \ ]
 let &cpo=s:cpo
 
diff --git a/syntax/eelixir.vim b/syntax/eelixir.vim
index e30a51c9..8fbe92a7 100644
--- a/syntax/eelixir.vim
+++ b/syntax/eelixir.vim
@@ -24,13 +24,16 @@ if !exists("b:eelixir_subtype")
     let b:eelixir_subtype = matchstr(&filetype,'^eex\.\zs\w\+')
   endif
   if b:eelixir_subtype == ''
+    let b:eelixir_subtype = matchstr(&filetype,'^heex\.\zs\w\+')
+  endif
+  if b:eelixir_subtype == ''
     let b:eelixir_subtype = matchstr(&filetype,'^leex\.\zs\w\+')
   endif
   if b:eelixir_subtype == ''
     let b:eelixir_subtype = matchstr(&filetype,'^sface\.\zs\w\+')
   endif
   if b:eelixir_subtype == ''
-    let b:eelixir_subtype = matchstr(substitute(expand("%:t"),'\c\%(\.eex\|\.sface\|\.leex\|\.eelixir\)\+$','',''),'\.\zs\w\+$')
+    let b:eelixir_subtype = matchstr(substitute(expand("%:t"),'\c\%(\.eex\|\.heex\|\.leex\|\.sface\|\.eelixir\)\+$','',''),'\.\zs\w\+$')
   endif
   if b:eelixir_subtype == 'ex'
     let b:eelixir_subtype = 'elixir'
diff --git a/syntax/git.vim b/syntax/git.vim
index 9d8efc69..16a86a6a 100644
--- a/syntax/git.vim
+++ b/syntax/git.vim
@@ -16,12 +16,28 @@ syn sync minlines=50
 
 syn include @gitDiff syntax/diff.vim
 
-syn region gitHead start=/\%^/ end=/^$/ contains=@NoSpell
-syn region gitHead start=/\%(^commit\%( \x\{40\}\)\{1,\}\%(\s*(.*)\)\=$\)\@=/ end=/^$/ contains=@NoSpell
-
-" For git reflog and git show ...^{tree}, avoid sync issues
-syn match gitHead /^\d\{6\} \%(\w\{4} \)\=\x\{40\}\%( [0-3]\)\=\t.*/ contains=@NoSpell
-syn match gitHead /^\x\{40\} \x\{40}\t.*/ contains=@NoSpell
+syn region gitHead start=/\%^\%(tag \|tree \|object \)\@=/ end=/^$/ contains=@NoSpell
+syn region gitHead start=/\%(^commit\%( \x\{4,\}\)\{1,\}\%(\s*(.*)\)\=$\)\@=/ end=/^$/ contains=@NoSpell
+" git log --oneline
+" minimize false positives by verifying contents of buffer
+if getline(1) =~# '^\x\{7,\} ' && getline('$') =~# '^\x\{7,\} '
+  syn match gitHashAbbrev /^\x\{7,\} \@=/ contains=@NoSpell
+elseif getline(1) =~#     '^[|\/\\_ ]\{-\}\*[|\/\\_ ]\{-\} \x\{7,\} '
+  syn match gitHashAbbrev /^[|\/\\_ ]\{-\}\*[|\/\\_ ]\{-\} \zs\x\{7,\} \@=/ contains=@NoSpell
+endif
+" git log --graph
+syn region gitGraph start=/\%(^[|\/\\_ ]*\*[|\/\\_ ]\{-\} commit\%( \x\{4,\}\)\{1,\}\%(\s*(.*)\)\=$\)\@=/ end=/^\%([|\/\\_ ]*$\)\@=/ contains=@NoSpell
+" git blame --porcelain
+syn region gitHead start=/\%(^\x\{40,\} \d\+ \d\+\%( \d\+\)\=$\)\@=/ end=/^\t\@=/ contains=@NoSpell
+" git ls-tree
+syn match  gitMode    /^\d\{6\}\%( \%(blob\|tree\) \x\{4,\}\t\)\@=/ nextgroup=gitType skipwhite contains=@NoSpell
+" git ls-files --stage
+syn match  gitMode    /^\d\{6\}\%( \x\{4,\} [0-3]\t\)\@=/ nextgroup=gitHashStage skipwhite contains=@NoSpell
+" .git/HEAD, .git/refs/
+syn match  gitKeyword /\%^ref: \@=/ nextgroup=gitReference skipwhite contains=@NoSpell
+syn match  gitHash /\%^\x\{40,}\%$/ skipwhite contains=@NoSpell
+" .git/logs/
+syn match  gitReflog /^\x\{40,\} \x\{40,\} .\{-\}\d\+\s-\d\{4\}\t.*/ skipwhite contains=@NoSpell,gitReflogOld
 
 syn region gitDiff start=/^\%(diff --git \)\@=/ end=/^\%(diff --\|$\)\@=/ contains=@gitDiff fold
 syn region gitDiff start=/^\%(@@ -\)\@=/ end=/^\%(diff --\%(git\|cc\|combined\) \|$\)\@=/ contains=@gitDiff
@@ -33,31 +49,43 @@ syn match gitDiffAdded "{+[^}]*+}" contained containedin=gitDiff
 syn match gitDiffRemoved "^ \+-.*" contained containedin=gitDiffMerge
 syn match gitDiffRemoved "\[-[^]]*-\]" contained containedin=gitDiff
 
-syn match  gitKeyword /^\%(object\|type\|tag\|commit\|tree\|parent\|encoding\|gpgsig\%(-\w\+\)\=\|summary\|boundary\|filename\|previous\)\>/ contained containedin=gitHead nextgroup=gitHash,gitType skipwhite contains=@NoSpell
-syn match  gitKeyword /^\%(tag\>\|ref:\)/ contained containedin=gitHead nextgroup=gitReference skipwhite contains=@NoSpell
+syn match  gitKeyword /^commit \@=/ contained containedin=gitHead nextgroup=gitHashAbbrev skipwhite contains=@NoSpell
+syn match  gitKeyword /^\%(object\|tree\|parent\|encoding\|gpgsig\%(-\w\+\)\=\|previous\) \@=/ contained containedin=gitHead nextgroup=gitHash skipwhite contains=@NoSpell
 syn match  gitKeyword /^Merge:/  contained containedin=gitHead nextgroup=gitHashAbbrev skipwhite contains=@NoSpell
-syn match  gitMode    /^\d\{6\}\>/ contained containedin=gitHead nextgroup=gitType,gitHash skipwhite
-syn match  gitIdentityKeyword /^\%(author\|committer\|tagger\)\%(-mail\|-time\|-tz\)\=\>/ contained containedin=gitHead nextgroup=gitIdentity skipwhite
+syn match  gitIdentityKeyword /^\%(author\|committer\|tagger\) \@=/ contained containedin=gitHead nextgroup=gitIdentity skipwhite
 syn match  gitIdentityHeader /^\%(Author\|Commit\|Tagger\):/ contained containedin=gitHead nextgroup=gitIdentity skipwhite
 syn match  gitDateHeader /^\%(AuthorDate\|CommitDate\|Date\):/ contained containedin=gitHead nextgroup=gitDate skipwhite
 
+syn match  gitKeyword /^[*|\/\\_ ]\+\zscommit \@=/ contained containedin=gitGraph nextgroup=gitHashAbbrev skipwhite contains=@NoSpell
+syn match  gitKeyword /^[|\/\\_ ]\+\zs\%(object\|tree\|parent\|encoding\|gpgsig\%(-\w\+\)\=\|previous\) \@=/ contained containedin=gitGraph nextgroup=gitHash skipwhite contains=@NoSpell
+syn match  gitKeyword /^[|\/\\_ ]\+\zsMerge:/  contained containedin=gitGraph nextgroup=gitHashAbbrev skipwhite contains=@NoSpell
+syn match  gitIdentityKeyword /^[|\/\\_ ]\+\zs\%(author\|committer\|tagger\) \@=/ contained containedin=gitGraph nextgroup=gitIdentity skipwhite
+syn match  gitIdentityHeader /^[|\/\\_ ]\+\zs\%(Author\|Commit\|Tagger\):/ contained containedin=gitGraph nextgroup=gitIdentity skipwhite
+syn match  gitDateHeader /^[|\/\\_ ]\+\zs\%(AuthorDate\|CommitDate\|Date\):/ contained containedin=gitGraph nextgroup=gitDate skipwhite
+
+syn match  gitKeyword /^type \@=/ contained containedin=gitHead nextgroup=gitType skipwhite contains=@NoSpell
+syn match  gitKeyword /^\%(summary\|boundary\|filename\|\%(author\|committer\)-\%(time\|tz\)\) \@=/ contained containedin=gitHead skipwhite contains=@NoSpell
+syn match  gitKeyword /^tag \@=/ contained containedin=gitHead nextgroup=gitReference skipwhite contains=@NoSpell
+syn match  gitIdentityKeyword /^\%(author\|committer\)-mail \@=/ contained containedin=gitHead nextgroup=gitEmail skipwhite
 syn match  gitReflogHeader /^Reflog:/ contained containedin=gitHead nextgroup=gitReflogMiddle skipwhite
 syn match  gitReflogHeader /^Reflog message:/ contained containedin=gitHead skipwhite
 syn match  gitReflogMiddle /\S\+@{\d\+} (/he=e-2 nextgroup=gitIdentity
 
+syn match  gitIdentity /\S.\{-\} <[^>]*>/ contained nextgroup=gitDate skipwhite
+syn region gitEmail matchgroup=gitEmailDelimiter start=/</ end=/>/ keepend oneline contained containedin=gitIdentity
 syn match  gitDate      /\<\u\l\l \u\l\l \d\=\d \d\d:\d\d:\d\d \d\d\d\d [+-]\d\d\d\d/ contained
 syn match  gitDate      /-\=\d\+ [+-]\d\d\d\d\>/               contained
 syn match  gitDate      /\<\d\+ \l\+ ago\>/                    contained
-syn match  gitType      /\<\%(tag\|commit\|tree\|blob\)\>/     contained nextgroup=gitHash skipwhite
-syn match  gitStage     /\<\d\t\@=/                            contained
+syn match  gitType      /\<\%(tag\|commit\|tree\|blob\)\>/     contained nextgroup=gitHashAbbrev skipwhite
 syn match  gitReference /\S\+\S\@!/                            contained
-syn match  gitHash      /\<\x\{40\}\>/                         contained nextgroup=gitIdentity,gitStage,gitHash skipwhite contains=@NoSpell
-syn match  gitHash      /^\<\x\{40\}\>/ containedin=gitHead contained nextgroup=gitHash skipwhite contains=@NoSpell
-syn match  gitHashAbbrev /\<\x\{4,40\}\>/           contained nextgroup=gitHashAbbrev skipwhite contains=@NoSpell
+syn match  gitHash      /\<\x\{40,\}\>/             contained nextgroup=gitIdentity,gitHash skipwhite contains=@NoSpell
+syn match  gitReflogOld /^\x\{40,\} \@=/            contained nextgroup=gitReflogNew skipwhite contains=@NoSpell
+syn match  gitReflogNew /\<\x\{40,\} \@=/           contained nextgroup=gitIdentity skipwhite contains=@NoSpell
+syn match  gitHashAbbrev /\<\x\{4,\}\>/             contained nextgroup=gitHashAbbrev skipwhite contains=@NoSpell
 syn match  gitHashAbbrev /\<\x\{4,39\}\.\.\./he=e-3 contained nextgroup=gitHashAbbrev skipwhite contains=@NoSpell
+syn match  gitHashStage /\<\x\{4,\}\>/              contained nextgroup=gitStage skipwhite contains=@NoSpell
+syn match  gitStage     /\<\d\t\@=/                 contained
 
-syn match  gitIdentity /\S.\{-\} <[^>]*>/ contained nextgroup=gitDate skipwhite
-syn region gitEmail matchgroup=gitEmailDelimiter start=/</ end=/>/ keepend oneline contained containedin=gitIdentity
 
 syn match  gitNotesHeader /^Notes:\ze\n    /
 
@@ -72,7 +100,10 @@ hi def link gitEmailDelimiter    Delimiter
 hi def link gitEmail             Special
 hi def link gitDate              Number
 hi def link gitMode              Number
+hi def link gitHashStage         gitHash
 hi def link gitHashAbbrev        gitHash
+hi def link gitReflogOld         gitHash
+hi def link gitReflogNew         gitHash
 hi def link gitHash              Identifier
 hi def link gitReflogMiddle      gitReference
 hi def link gitReference         Function
diff --git a/syntax/julia.vim b/syntax/julia.vim
index 88aa464e..bafae9b4 100644
--- a/syntax/julia.vim
+++ b/syntax/julia.vim
@@ -13,6 +13,9 @@ elseif exists("b:current_syntax")
   finish
 endif
 
+let s:cpo_save = &cpo
+set cpo&vim
+
 if version < 704
   " this is used to disable regex syntax like `\@3<='
   " on older vim versions
@@ -40,9 +43,9 @@ let s:julia_highlight_operators = get(g:, "julia_highlight_operators", 1)
 " It doesn't include a few characters (spaces and all closing parentheses)
 " because those may or may not be valid in the lookbehind on a case-by-case
 " basis.
-let s:nonid_chars = '\U00-\U08' . '\U0A-\U1F' .
-      \             '\U21-\U28' . '\U2A-\U2F' . '\U3A-\U40' . '\U5B-\U5E' . '\U60' . '\U7B\U7C' .
-      \             '\U7E-\UA1' . '\UA7\UA8' . '\UAB-\UAD' . '\UAF\UB1\UB4' . '\UB6-\UB8' . '\UBB\UBF' . '\UD7\UF7'
+let s:nonid_chars = '\U00-\U08' . '\U0A-\U1F'
+      \           . '\U21-\U28' . '\U2A-\U2F' . '\U3A-\U40' . '\U5B-\U5E' . '\U60' . '\U7B\U7C'
+      \           . '\U7E-\UA1' . '\UA7\UA8' . '\UAB-\UAD' . '\UAF\UB1\UB4' . '\UB6-\UB8' . '\UBB\UBF' . '\UD7\UF7'
 
 " The complete list
 let s:nonidS_chars = '[:space:])\U5D}' . s:nonid_chars
@@ -60,10 +63,10 @@ let s:op_chars = '\U25\U26\U2A\U2B\U2D\U2F\U3C-\U3E\U5C\U5E\U7C\U7E\UAC\UB1\UD7\
 let s:op_chars_wc = '\U2026\U205D\U214B\U2190-\U2194\U219A-\U219E\U21A0\U21A2-\U21A4\U21A6\U21A9-\U21AC\U21AE\U21B6\U21B7\U21BA-\U21BD\U21C0\U21C1\U21C4\U21C6\U21C7\U21C9\U21CB-\U21D0\U21D2\U21D4\U21DA-\U21DD\U21E0\U21E2\U21F4-\U21FF\U2208-\U220D\U2213\U2214\U2217-\U221D\U2224-\U222A\U2237\U2238\U223A\U223B\U223D\U223E\U2240-\U228B\U228D-\U229C\U229E-\U22A3\U22A9\U22AC\U22AE\U22B0-\U22B7\U22BB-\U22BD\U22C4-\U22C7\U22C9-\U22D3\U22D5-\U22FF\U233F\U25B7\U27C2\U27C8\U27C9\U27D1\U27D2\U27D5-\U27D7\U27F0\U27F1\U27F5-\U27F7\U27F9-\U27FF\U2900-\U2918\U291D-\U2920\U2944-\U2970\U29B7\U29B8\U29BC\U29BE-\U29C1\U29E1\U29E3-\U29E5\U29F4\U29F6\U29F7\U29FA\U29FB\U2A07\U2A08\U2A1D\U2A1F\U2A22-\U2A2E\U2A30-\U2A3D\U2A40-\U2A45\U2A4A-\U2A58\U2A5A-\U2A63\U2A66\U2A67\U2A6A-\U2AD9\U2ADB\U2AF7-\U2AFA\U2B30-\U2B44\U2B47-\U2B4C\UFFE9-\UFFEC'
 
 " Full operators regex
-let s:operators = '\%(' . '\.\%([-+*/^÷%|&⊻]\|//\|\\\|>>\|>>>\?\)\?=' .
-      \           '\|'  . '[:<>]=\|||\|&&\||>\|<|\|[<>:]:\|<<\|>>>\?\|//\|[-=]>\|\.\.\.\?' .
-      \           '\|'  . '\.\?[!' . s:op_chars . s:op_chars_wc . ']' .
-      \           '\)'
+let s:operators = '\%(' . '\.\%([-+*/^÷%|&⊻]\|//\|\\\|>>\|>>>\?\)\?='
+      \         . '\|'  . '[:<>]=\|||\|&&\||>\|<|\|[<>:]:\|<<\|>>>\?\|//\|[-=]>\|\.\.\.\?'
+      \         . '\|'  . '\.\?[!' . s:op_chars . s:op_chars_wc . ']'
+      \         . '\)'
 
 
 " Characters that can be used to start an identifier. Above \UBF we don't
@@ -247,11 +250,11 @@ let s:hex_regex = '0x\x\%(_\?\x\)*\%(\>\|im\>\|\ze\X\)'
 let s:bin_regex = '0b[01]\%(_\?[01]\)*\%(\>\|im\>\|\ze[^01]\)'
 let s:oct_regex = '0o\o\%(_\?\o\)*\%(\>\|im\>\|\ze\O\)'
 
-let s:int_regex = '\%(' . s:hex_regex .
-      \           '\|'  . s:bin_regex .
-      \           '\|'  . s:oct_regex .
-      \           '\|'  . s:dec_regex .
-      \           '\)'
+let s:int_regex = '\%(' . s:hex_regex
+      \         . '\|'  . s:bin_regex
+      \         . '\|'  . s:oct_regex
+      \         . '\|'  . s:dec_regex
+      \         . '\)'
 
 "floating point regexes
 "  starting with a dot, optional exponent
@@ -267,12 +270,12 @@ let s:hexfloat_regex1 = '0x\.\%\(\x\%(_\?\x\)*\)\?[pP][-+]\?\d\+\%(\>\|im\>\|\ze
 "  starting with a digit
 let s:hexfloat_regex2 = '0x\x\%(_\?\x\)*\%\(\.\%\(\x\%(_\?\x\)*\)\?\)\?[pP][-+]\?\d\+\%(\>\|im\>\|\ze\X\)'
 
-let s:float_regex = '\%(' . s:float_regex3 .
-      \             '\|'  . s:float_regex2 .
-      \             '\|'  . s:float_regex1 .
-      \             '\|'  . s:hexfloat_regex2 .
-      \             '\|'  . s:hexfloat_regex1 .
-      \             '\)'
+let s:float_regex = '\%(' . s:float_regex3
+      \           . '\|'  . s:float_regex2
+      \           . '\|'  . s:float_regex1
+      \           . '\|'  . s:hexfloat_regex2
+      \           . '\|'  . s:hexfloat_regex1
+      \           . '\)'
 
 exec 'syntax match   juliaNumber	contained "' . s:int_regex . '" contains=juliaComplexUnit'
 exec 'syntax match   juliaFloat		contained "' . s:float_regex . '" contains=juliaComplexUnit'
@@ -545,3 +548,6 @@ hi def link juliaError			Error
 syntax sync fromstart
 
 let b:current_syntax = "julia"
+
+let &cpo = s:cpo_save
+unlet s:cpo_save
diff --git a/syntax/juliadoc.vim b/syntax/juliadoc.vim
index c4dbfdbd..41626d03 100644
--- a/syntax/juliadoc.vim
+++ b/syntax/juliadoc.vim
@@ -9,6 +9,9 @@ if exists('b:current_syntax')
   finish
 endif
 
+let s:cpo_save = &cpo
+set cpo&vim
+
 syntax sync fromstart
 
 syntax region juliadocCode matchgroup=juliadocCodeDelimiter start="`" end="`" concealends display oneline
@@ -67,3 +70,6 @@ highlight default link juliadocAdmonitionsType Todo
 highlight default link juliadocAdmonitionsTitle Title
 
 let b:current_syntax = "juliadoc"
+
+let &cpo = s:cpo_save
+unlet s:cpo_save
diff --git a/syntax/meson.vim b/syntax/meson.vim
index 1a6cda37..8e151a7e 100644
--- a/syntax/meson.vim
+++ b/syntax/meson.vim
@@ -7,7 +7,7 @@ endif
 " License:	VIM License
 " Maintainer:	Nirbheek Chauhan <nirbheek.chauhan@gmail.com>
 "		Liam Beguin <liambeguin@gmail.com>
-" Last Change:	2016 Dec 7
+" Last Change:	2021 Aug 16
 " Credits:	Zvezdan Petkovic <zpetkovic@acm.org>
 "		Neil Schemenauer <nas@meson.ca>
 "		Dmitry Vasiliev
@@ -122,6 +122,7 @@ syn keyword mesonBuiltin
   \ summary
   \ target_machine
   \ test
+  \ unset_variable
   \ vcs_tag
   \ warning
   \ range
diff --git a/syntax/pascal.vim b/syntax/pascal.vim
index 3080352e..d75f3354 100644
--- a/syntax/pascal.vim
+++ b/syntax/pascal.vim
@@ -7,7 +7,7 @@ endif
 " Maintainer:		Doug Kearns <dougkearns@gmail.com>
 " Previous Maintainers:	Xavier Crégut <xavier.cregut@enseeiht.fr>
 "			Mario Eusebio <bio@dq.fct.unl.pt>
-" Last Change:		2021 Apr 23
+" Last Change:		2021 May 20
 
 " Contributors: Tim Chase <tchase@csc.com>,
 "		Stas Grabois <stsi@vtrails.com>,
diff --git a/syntax/plantuml.vim b/syntax/plantuml.vim
index 9b235afb..538ef1e1 100644
--- a/syntax/plantuml.vim
+++ b/syntax/plantuml.vim
@@ -49,9 +49,11 @@ syntax keyword plantumlKeyword split start stereotype stop title top up while
 " Not in 'java - jar plantuml.jar - language' results
 syntax keyword plantumlKeyword endlegend sprite then
 " gantt
-syntax keyword plantumlTypeKeyword project monday tuesday wednesday thursday friday saturday sunday
-syntax keyword plantumlKeyword starts ends start end closed day after colored lasts happens in at are to the and
-
+syntax keyword plantumlTypeKeyword monday tuesday wednesday thursday friday saturday sunday today
+syntax keyword plantumlTypeKeyword project Project labels Labels last first column
+syntax keyword plantumlKeyword starts ends start end closed after colored lasts happens in at are to the and
+syntax keyword plantumlKeyword printscale ganttscale projectscale daily weekly monthly quarterly yearly zoom
+syntax keyword plantumlKeyword day days week weeks today then complete displays same row pauses
 
 syntax keyword plantumlCommentTODO XXX TODO FIXME NOTE contained
 syntax match plantumlColor /#[0-9A-Fa-f]\{6\}\>/
diff --git a/syntax/scala.vim b/syntax/scala.vim
index 6f802f3c..decceba4 100644
--- a/syntax/scala.vim
+++ b/syntax/scala.vim
@@ -70,11 +70,13 @@ syn match scalaChar /'\\u[A-Fa-f0-9]\{4}'/ contains=scalaUnicodeChar
 syn match scalaEscapedChar /\\[\\"'ntbrf]/
 syn match scalaUnicodeChar /\\u[A-Fa-f0-9]\{4}/
 hi link scalaChar Character
-hi link scalaEscapedChar Function
+hi link scalaEscapedChar Special
 hi link scalaUnicodeChar Special
 
 syn match scalaOperator "||"
 syn match scalaOperator "&&"
+syn match scalaOperator "|"
+syn match scalaOperator "&"
 hi link scalaOperator Special
 
 syn match scalaNameDefinition /\<[_A-Za-z0-9$]\+\>/ contained nextgroup=scalaPostNameDefinition,scalaVariableDeclarationList
@@ -122,7 +124,7 @@ hi link scalaTypePostExtension Keyword
 
 syn match scalaTypeAnnotation /\%([_a-zA-Z0-9$\s]:\_s*\)\ze[_=(\.A-Za-z0-9$]\+/ skipwhite nextgroup=scalaTypeDeclaration contains=scalaRoundBrackets
 syn match scalaTypeAnnotation /)\_s*:\_s*\ze[_=(\.A-Za-z0-9$]\+/ skipwhite nextgroup=scalaTypeDeclaration
-hi link scalaTypeAnnotation Normal
+hi clear scalaTypeAnnotation
 
 syn match scalaCaseFollowing /\<[_\.A-Za-z0-9$]\+\>/ contained contains=scalaCapitalWord
 syn match scalaCaseFollowing /`[^`]\+`/ contained contains=scalaCapitalWord
@@ -148,21 +150,21 @@ hi link scalaString String
 hi link scalaStringEmbeddedQuote String
 
 syn region scalaIString matchgroup=scalaInterpolationBrackets start=/\<[a-zA-Z][a-zA-Z0-9_]*"/ skip=/\\"/ end=/"/ contains=scalaInterpolation,scalaInterpolationB,scalaEscapedChar,scalaUnicodeChar
-syn region scalaTripleIString matchgroup=scalaInterpolationBrackets start=/\<[a-zA-Z][a-zA-Z0-9_]*"""/ end=/"""\%([^"]\|$\)/ contains=scalaInterpolation,scalaInterpolationB,scalaEscapedChar,scalaUnicodeChar
+syn region scalaTripleIString matchgroup=scalaInterpolationBrackets start=/\<[a-zA-Z][a-zA-Z0-9_]*"""/ end=/"""\ze\%([^"]\|$\)/ contains=scalaInterpolation,scalaInterpolationB,scalaEscapedChar,scalaUnicodeChar
 hi link scalaIString String
 hi link scalaTripleIString String
 
 syn match scalaInterpolation /\$[a-zA-Z0-9_$]\+/ contained
 exe 'syn region scalaInterpolationB matchgroup=scalaInterpolationBoundary start=/\${/ end=/}/ contained contains=' . s:ContainedGroup()
 hi link scalaInterpolation Function
-hi link scalaInterpolationB Normal
+hi clear scalaInterpolationB
 
 syn region scalaFString matchgroup=scalaInterpolationBrackets start=/f"/ skip=/\\"/ end=/"/ contains=scalaFInterpolation,scalaFInterpolationB,scalaEscapedChar,scalaUnicodeChar
 syn match scalaFInterpolation /\$[a-zA-Z0-9_$]\+\(%[-A-Za-z0-9\.]\+\)\?/ contained
 exe 'syn region scalaFInterpolationB matchgroup=scalaInterpolationBoundary start=/${/ end=/}\(%[-A-Za-z0-9\.]\+\)\?/ contained contains=' . s:ContainedGroup()
 hi link scalaFString String
 hi link scalaFInterpolation Function
-hi link scalaFInterpolationB Normal
+hi clear scalaFInterpolationB
 
 syn region scalaTripleString start=/"""/ end=/"""\%([^"]\|$\)/ contains=scalaEscapedChar,scalaUnicodeChar
 syn region scalaTripleFString matchgroup=scalaInterpolationBrackets start=/f"""/ end=/"""\%([^"]\|$\)/ contains=scalaFInterpolation,scalaFInterpolationB,scalaEscapedChar,scalaUnicodeChar
diff --git a/syntax/scheme.vim b/syntax/scheme.vim
index 8e991aa9..2db92bcd 100644
--- a/syntax/scheme.vim
+++ b/syntax/scheme.vim
@@ -4,11 +4,12 @@ endif
 
 " Vim syntax file
 " Language: Scheme (R7RS)
-" Last Change: 2018-01-06
+" Last Change: 2021-01-03
 " Author: Evan Hanson <evhan@foldling.org>
 " Maintainer: Evan Hanson <evhan@foldling.org>
 " Previous Author: Dirk van Deun <dirk@igwe.vub.ac.be>
 " Previous Maintainer: Sergey Khorev <sergey.khorev@gmail.com>
+" Repository: https://git.foldling.org/vim-scheme.git
 " URL: https://foldling.org/vim/syntax/scheme.vim
 
 if exists('b:current_syntax')
@@ -18,6 +19,8 @@ endif
 let s:cpo = &cpo
 set cpo&vim
 
+syn spell notoplevel
+
 syn match schemeParentheses "[^ '`\t\n()\[\]";]\+"
 syn match schemeParentheses "[)\]]"
 
@@ -39,7 +42,7 @@ syn region schemeUnquote matchgroup=schemeParentheses start=/,@(/ end=/)/ contai
 syn region schemeQuoteForm matchgroup=schemeData start=/(/ end=/)/ contained contains=ALLBUT,schemeQuasiquote,schemeQuasiquoteForm,schemeUnquote,schemeForm,schemeDatumCommentForm,schemeImport,@schemeImportCluster,@schemeSyntaxCluster
 syn region schemeQuasiquoteForm matchgroup=schemeData start=/(/ end=/)/ contained contains=ALLBUT,schemeQuote,schemeForm,schemeDatumCommentForm,schemeImport,@schemeImportCluster,@schemeSyntaxCluster
 
-syn region schemeString start=/\(\\\)\@<!"/ skip=/\\[\\"]/ end=/"/
+syn region schemeString start=/\(\\\)\@<!"/ skip=/\\[\\"]/ end=/"/ contains=@Spell
 syn region schemeSymbol start=/\(\\\)\@<!|/ skip=/\\[\\|]/ end=/|/
 
 syn match schemeNumber /\(#[dbeio]\)*[+\-]*\([0-9]\+\|inf.0\|nan.0\)\(\/\|\.\)\?[0-9+\-@\ilns]*\>/
@@ -51,9 +54,9 @@ syn match schemeBoolean /#f\(alse\)\?/
 syn match schemeCharacter /#\\.[^ `'\t\n\[\]()]*/
 syn match schemeCharacter /#\\x[0-9a-fA-F]\+/
 
-syn match schemeComment /;.*$/
+syn match schemeComment /;.*$/ contains=@Spell
 
-syn region schemeMultilineComment start=/#|/ end=/|#/ contains=schemeMultilineComment
+syn region schemeMultilineComment start=/#|/ end=/|#/ contains=schemeMultilineComment,@Spell
 
 syn region schemeForm matchgroup=schemeParentheses start="(" end=")" contains=ALLBUT,schemeUnquote,schemeDatumCommentForm,@schemeImportCluster
 syn region schemeForm matchgroup=schemeParentheses start="\[" end="\]" contains=ALLBUT,schemeUnquote,schemeDatumCommentForm,@schemeImportCluster
@@ -67,7 +70,7 @@ else
   syn region schemeImport matchgroup=schemeImport start="\(([ \t\n]*\)\@<=\(import\)\>" end=")"me=e-1 contained contains=schemeImportForm,schemeIdentifier,schemeComment,schemeDatumComment
 endif
 
-syn match   schemeImportKeyword "\(([ \t\n]*\)\@<=\(except\|only\|prefix\|rename\|srfi\)\>"
+syn match   schemeImportKeyword "\(([ \t\n]*\)\@<=\(except\|only\|prefix\|rename\)\>"
 syn region  schemeImportForm matchgroup=schemeParentheses start="(" end=")" contained contains=schemeIdentifier,schemeComment,schemeDatumComment,@schemeImportCluster
 syn cluster schemeImportCluster contains=schemeImportForm,schemeImportKeyword
 
diff --git a/syntax/tmux.vim b/syntax/tmux.vim
index e04ee988..340b00fd 100644
--- a/syntax/tmux.vim
+++ b/syntax/tmux.vim
@@ -3,7 +3,7 @@ if polyglot#init#is_disabled(expand('<sfile>:p'), 'tmux', 'syntax/tmux.vim')
 endif
 
 " Language: tmux(1) configuration file
-" Version: to_merge (git-c03b5746)
+" Version: 3.2a (git-44ada9cd)
 " URL: https://github.com/ericpruitt/tmux.vim/
 " Maintainer: Eric Pruitt <eric.pruitt@gmail.com>
 " License: 2-Clause BSD (http://opensource.org/licenses/BSD-2-Clause)
@@ -84,8 +84,8 @@ syn keyword tmuxOptions
 \ main-pane-width mode-keys mode-style monitor-activity monitor-bell
 \ monitor-silence mouse other-pane-height other-pane-width
 \ pane-active-border-style pane-base-index pane-border-format
-\ pane-border-lines pane-border-status pane-border-style prefix prefix2
-\ prompt-history-limit remain-on-exit renumber-windows repeat-time
+\ pane-border-lines pane-border-status pane-border-style pane-colours prefix
+\ prefix2 prompt-history-limit remain-on-exit renumber-windows repeat-time
 \ set-clipboard set-titles set-titles-string silence-action status status-bg
 \ status-fg status-format status-interval status-justify status-keys
 \ status-left status-left-length status-left-style status-position
diff --git a/syntax/toml.vim b/syntax/toml.vim
deleted file mode 100644
index 9540d2c5..00000000
--- a/syntax/toml.vim
+++ /dev/null
@@ -1,80 +0,0 @@
-if polyglot#init#is_disabled(expand('<sfile>:p'), 'toml', 'syntax/toml.vim')
-  finish
-endif
-
-" Language:   TOML
-" Maintainer: Caleb Spare <cespare@gmail.com>
-" URL:        https://github.com/cespare/vim-toml
-" LICENSE:    MIT
-
-if exists('b:current_syntax')
-  finish
-endif
-
-syn match tomlEscape /\\[btnfr"/\\]/ display contained
-syn match tomlEscape /\\u\x\{4}/ contained
-syn match tomlEscape /\\U\x\{8}/ contained
-hi def link tomlEscape SpecialChar
-
-syn match tomlLineEscape /\\$/ contained
-hi def link tomlLineEscape SpecialChar
-
-" Basic strings
-syn region tomlString oneline start=/"/ skip=/\\\\\|\\"/ end=/"/ contains=tomlEscape
-" Multi-line basic strings
-syn region tomlString start=/"""/ end=/"""/ contains=tomlEscape,tomlLineEscape
-" Literal strings
-syn region tomlString oneline start=/'/ end=/'/
-" Multi-line literal strings
-syn region tomlString start=/'''/ end=/'''/
-hi def link tomlString String
-
-syn match tomlInteger /[+-]\=\<[1-9]\(_\=\d\)*\>/ display
-syn match tomlInteger /[+-]\=\<0\>/ display
-syn match tomlInteger /[+-]\=\<0x[[:xdigit:]]\(_\=[[:xdigit:]]\)*\>/ display
-syn match tomlInteger /[+-]\=\<0o[0-7]\(_\=[0-7]\)*\>/ display
-syn match tomlInteger /[+-]\=\<0b[01]\(_\=[01]\)*\>/ display
-syn match tomlInteger /[+-]\=\<\(inf\|nan\)\>/ display
-hi def link tomlInteger Number
-
-syn match tomlFloat /[+-]\=\<\d\(_\=\d\)*\.\d\+\>/ display
-syn match tomlFloat /[+-]\=\<\d\(_\=\d\)*\(\.\d\(_\=\d\)*\)\=[eE][+-]\=\d\(_\=\d\)*\>/ display
-hi def link tomlFloat Float
-
-syn match tomlBoolean /\<\%(true\|false\)\>/ display
-hi def link tomlBoolean Boolean
-
-" https://tools.ietf.org/html/rfc3339
-syn match tomlDate /\d\{4\}-\d\{2\}-\d\{2\}/ display
-syn match tomlDate /\d\{2\}:\d\{2\}:\d\{2\}\%(\.\d\+\)\?/ display
-syn match tomlDate /\d\{4\}-\d\{2\}-\d\{2\}[T ]\d\{2\}:\d\{2\}:\d\{2\}\%(\.\d\+\)\?\%(Z\|[+-]\d\{2\}:\d\{2\}\)\?/ display
-hi def link tomlDate Constant
-
-syn match tomlKey /\v(^|[{,])\s*\zs[[:alnum:]._-]+\ze\s*\=/ display
-hi def link tomlKey Identifier
-
-syn region tomlKeyDq oneline start=/\v(^|[{,])\s*\zs"/ end=/"\ze\s*=/ contains=tomlEscape
-hi def link tomlKeyDq Identifier
-
-syn region tomlKeySq oneline start=/\v(^|[{,])\s*\zs'/ end=/'\ze\s*=/
-hi def link tomlKeySq Identifier
-
-syn region tomlTable oneline start=/^\s*\[[^\[]/ end=/\]/ contains=tomlKey,tomlKeyDq,tomlKeySq
-hi def link tomlTable Title
-
-syn region tomlTableArray oneline start=/^\s*\[\[/ end=/\]\]/ contains=tomlKey,tomlKeyDq,tomlKeySq
-hi def link tomlTableArray Title
-
-syn cluster tomlValue contains=tomlArray,tomlString,tomlInteger,tomlFloat,tomlBoolean,tomlDate,tomlComment
-syn region tomlKeyValueArray start=/=\s*\[\zs/ end=/\]/ contains=@tomlValue
-syn region tomlArray start=/\[/ end=/\]/ contains=@tomlValue contained
-
-syn keyword tomlTodo TODO FIXME XXX BUG contained
-hi def link tomlTodo Todo
-
-syn match tomlComment /#.*/ contains=@Spell,tomlTodo
-hi def link tomlComment Comment
-
-syn sync minlines=500
-
-let b:current_syntax = 'toml'