Update

47 files changed, 473 insertions, 307 deletions

diff --git a/README.md b/README.md
index c2fbd8f0..8e5d4616 100644
--- a/README.md
+++ b/README.md
@@ -166,7 +166,7 @@ On top of all language packs from [vim repository](https://github.com/vim/vim/tr
 - [requirements](https://github.com/raimon49/requirements.txt.vim) (Syntax highlighting for pip files)
 - [rspec](https://github.com/keith/rspec.vim)
 - [rst](https://github.com/marshallward/vim-restructuredtext) (reStructuredText syntax highlighting for rst, rest, rest.txt and rst.txt files)
-- [ruby](https://github.com/vim-ruby/vim-ruby) (Ruby and HTML+ERB syntax highlighting for rb, builder, eye, fcgi, gemspec and 25 more files)
+- [ruby](https://github.com/vim-ruby/vim-ruby) (Ruby and HTML+ERB syntax highlighting for rb, builder, eye, fcgi, gemspec and 26 more files)
 - [rust](https://github.com/rust-lang/rust.vim) (Rust syntax highlighting for rs and rs.in files)
 - [scala](https://github.com/derekwyatt/vim-scala) (Scala syntax highlighting for scala, kojo and sc files)
 - [scss](https://github.com/cakebaker/scss-syntax.vim) (SCSS syntax highlighting for scss files)
@@ -198,7 +198,7 @@ On top of all language packs from [vim repository](https://github.com/vim/vim/tr
 - [velocity](https://github.com/lepture/vim-velocity) (Syntax highlighting for vm files)
 - [vue](https://github.com/posva/vim-vue) (Vue syntax highlighting for vue and wpy files)
 - [xdc](https://github.com/amal-khailtash/vim-xdc-syntax) (Syntax highlighting for xdc files)
-- [xml](https://github.com/amadeus/vim-xml) (XML syntax highlighting for xml, adml, admx, ant, axml and 95 more files)
+- [xml](https://github.com/amadeus/vim-xml) (XML syntax highlighting for xml, adml, admx, ant, axml and 96 more files)
 - [xsl](https://github.com/vim-scripts/XSLT-syntax) (XSLT syntax highlighting for xslt and xsl files)
 - [yard](https://github.com/noprompt/vim-yardoc)
 - [zephir](https://github.com/xwsoul/vim-zephir) (Zephir syntax highlighting for zep files)
diff --git a/after/ftplugin/requirements.vim b/after/ftplugin/requirements.vim
new file mode 100644
index 00000000..6c3e1d24
--- /dev/null
+++ b/after/ftplugin/requirements.vim
@@ -0,0 +1,40 @@
+if polyglot#init#is_disabled(expand('<sfile>:p'), 'requirements', 'after/ftplugin/requirements.vim')
+  finish
+endif
+
+" the Requirements File Format syntax support for Vim
+" Version: 1.6.0
+" Author:  raimon <raimon49@hotmail.com>
+" License: MIT LICENSE
+" The MIT License (MIT)
+"
+" Copyright (c) 2015 raimon
+"
+" Permission is hereby granted, free of charge, to any person obtaining a copy
+" of this software and associated documentation files (the "Software"), to deal
+" in the Software without restriction, including without limitation the rights
+" to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+" copies of the Software, and to permit persons to whom the Software is
+" furnished to do so, subject to the following conditions:
+"
+" The above copyright notice and this permission notice shall be included in all
+" copies or substantial portions of the Software.
+"
+" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+" IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+" FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+" AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+" LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+" OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+" SOFTWARE.
+if executable('pip-compile')
+    let s:filename = expand("%:p")
+    if fnamemodify(s:filename, ":t") ==# 'requirements.in'
+        " this is the default filename for pip-compile
+        setlocal makeprg=pip-compile
+    elseif fnamemodify(s:filename, ":e") ==# 'in'
+        \ && Requirements_matched_filename(s:filename)
+        setlocal makeprg=pip-compile\ %
+    endif
+endif
+" vim: et sw=4 ts=4 sts=4:
diff --git a/after/indent/javascript-2.vim b/after/indent/javascript-2.vim
index ad32e284..6037664a 100644
--- a/after/indent/javascript-2.vim
+++ b/after/indent/javascript-2.vim
@@ -2,7 +2,7 @@ if polyglot#init#is_disabled(expand('<sfile>:p'), 'graphql', 'after/indent/javas
   finish
 endif
 
-" Copyright (c) 2016-2020 Jon Parise <jon@indelible.org>
+" Copyright (c) 2016-2021 Jon Parise <jon@indelible.org>
 "
 " Permission is hereby granted, free of charge, to any person obtaining a copy
 " of this software and associated documentation files (the "Software"), to
diff --git a/after/indent/php.vim b/after/indent/php.vim
index 65534a8c..7ed602f8 100644
--- a/after/indent/php.vim
+++ b/after/indent/php.vim
@@ -2,7 +2,7 @@ if polyglot#init#is_disabled(expand('<sfile>:p'), 'graphql', 'after/indent/php.v
   finish
 endif
 
-" Copyright (c) 2016-2020 Jon Parise <jon@indelible.org>
+" Copyright (c) 2016-2021 Jon Parise <jon@indelible.org>
 "
 " Permission is hereby granted, free of charge, to any person obtaining a copy
 " of this software and associated documentation files (the "Software"), to
diff --git a/after/indent/typescript.vim b/after/indent/typescript.vim
index ba107504..08c1e991 100644
--- a/after/indent/typescript.vim
+++ b/after/indent/typescript.vim
@@ -2,7 +2,7 @@ if polyglot#init#is_disabled(expand('<sfile>:p'), 'graphql', 'after/indent/types
   finish
 endif
 
-" Copyright (c) 2016-2020 Jon Parise <jon@indelible.org>
+" Copyright (c) 2016-2021 Jon Parise <jon@indelible.org>
 "
 " Permission is hereby granted, free of charge, to any person obtaining a copy
 " of this software and associated documentation files (the "Software"), to
diff --git a/after/syntax/javascript/graphql.vim b/after/syntax/javascript/graphql.vim
index d13ae9fb..f76f0fab 100644
--- a/after/syntax/javascript/graphql.vim
+++ b/after/syntax/javascript/graphql.vim
@@ -2,7 +2,7 @@ if polyglot#init#is_disabled(expand('<sfile>:p'), 'graphql', 'after/syntax/javas
   finish
 endif
 
-" Copyright (c) 2016-2020 Jon Parise <jon@indelible.org>
+" Copyright (c) 2016-2021 Jon Parise <jon@indelible.org>
 "
 " Permission is hereby granted, free of charge, to any person obtaining a copy
 " of this software and associated documentation files (the "Software"), to
diff --git a/after/syntax/php/graphql.vim b/after/syntax/php/graphql.vim
index 00c9811b..958a3753 100644
--- a/after/syntax/php/graphql.vim
+++ b/after/syntax/php/graphql.vim
@@ -2,7 +2,7 @@ if polyglot#init#is_disabled(expand('<sfile>:p'), 'graphql', 'after/syntax/php/g
   finish
 endif
 
-" Copyright (c) 2016-2020 Jon Parise <jon@indelible.org>
+" Copyright (c) 2016-2021 Jon Parise <jon@indelible.org>
 "
 " Permission is hereby granted, free of charge, to any person obtaining a copy
 " of this software and associated documentation files (the "Software"), to
diff --git a/after/syntax/reason/graphql.vim b/after/syntax/reason/graphql.vim
index 74a88a5d..af28b8e4 100644
--- a/after/syntax/reason/graphql.vim
+++ b/after/syntax/reason/graphql.vim
@@ -2,7 +2,7 @@ if polyglot#init#is_disabled(expand('<sfile>:p'), 'graphql', 'after/syntax/reaso
   finish
 endif
 
-" Copyright (c) 2016-2020 Jon Parise <jon@indelible.org>
+" Copyright (c) 2016-2021 Jon Parise <jon@indelible.org>
 "
 " Permission is hereby granted, free of charge, to any person obtaining a copy
 " of this software and associated documentation files (the "Software"), to
@@ -38,4 +38,5 @@ if exists('s:current_syntax')
   let b:current_syntax = s:current_syntax
 endif
 
-syntax region graphqlExtensionPoint matchgroup=Noise start=+\[%graphql\_s*{|+lc=10 end=+|}\_s*]+he=s+1 contains=@GraphQLSyntax keepend
+syntax region graphqlExtensionPoint start=+\[%graphql+ end=+\]+ contains=graphqlExtensionPointS
+syntax region graphqlExtensionPointS matchgroup=String start=+{|+ end=+|}+ contains=@GraphQLSyntax contained
diff --git a/after/syntax/typescript/graphql.vim b/after/syntax/typescript/graphql.vim
index 6db06513..95055006 100644
--- a/after/syntax/typescript/graphql.vim
+++ b/after/syntax/typescript/graphql.vim
@@ -2,7 +2,7 @@ if polyglot#init#is_disabled(expand('<sfile>:p'), 'graphql', 'after/syntax/types
   finish
 endif
 
-" Copyright (c) 2016-2020 Jon Parise <jon@indelible.org>
+" Copyright (c) 2016-2021 Jon Parise <jon@indelible.org>
 "
 " Permission is hereby granted, free of charge, to any person obtaining a copy
 " of this software and associated documentation files (the "Software"), to
diff --git a/autoload/LaTeXtoUnicode.vim b/autoload/LaTeXtoUnicode.vim
index fed23032..2be1a492 100644
--- a/autoload/LaTeXtoUnicode.vim
+++ b/autoload/LaTeXtoUnicode.vim
@@ -12,28 +12,14 @@ function! s:L2U_Setup()
 
   " Keep track of whether LaTeX-to-Unicode is activated
   " (used when filetype changes)
-  if !has_key(b:, "l2u_enabled")
-    let b:l2u_enabled = 0
-  endif
-  if !has_key(b:, "l2u_autodetect_enable")
-    let b:l2u_autodetect_enable = 1
-  endif
+  let b:l2u_enabled = get(b:, "l2u_enabled", 0)
+  let b:l2u_autodetect_enable = get(b:, "l2u_autodetect_enable", 1)
 
-  " Did we install the L2U tab mappings?
-  if !has_key(b:, "l2u_tab_set")
-    let b:l2u_tab_set = 0
-  endif
-  if !has_key(b:, "l2u_cmdtab_set")
-    let b:l2u_cmdtab_set = 0
-  endif
-  if !has_key(b:, "l2u_keymap_set")
-    let b:l2u_keymap_set = 0
-  endif
-
-  " Did we activate the L2U as-you-type substitutions?
-  if !has_key(b:, "l2u_autosub_set")
-    let b:l2u_autosub_set = 0
-  endif
+  " Did we install the L2U tab/as-you-type/keymap... mappings?
+  let b:l2u_tab_set = get(b:, "l2u_tab_set", 0)
+  let b:l2u_cmdtab_set = get(b:, "l2u_cmdtab_set", 0)
+  let b:l2u_autosub_set = get(b:, "l2u_autosub_set", 0)
+  let b:l2u_keymap_set = get(b:, "l2u_keymap_set", 0)
 
   " Following are some flags used to pass information between the function which
   " attempts the LaTeX-to-Unicode completion and the fallback function
@@ -77,17 +63,19 @@ function! s:L2U_SetupGlobal()
     let g:latex_to_unicode_suggestions = 0
   endif
 
-  " A hack to forcibly get out of completion mode: feed
-  " this string with feedkeys()
-  if has("win32") || has("win64")
-    let s:l2u_esc_sequence = "\u0006"
-  else
-    let s:l2u_esc_sequence = "\u0091\b"
-  end
+  " Forcibly get out of completion mode: feed
+  " this string with feedkeys(s:l2u_esc_sequence, 'n')
+  let s:l2u_esc_sequence = " \b"
 
   " Trigger for the previous mapping of <Tab>
   let s:l2u_fallback_trigger = "\u0091L2UFallbackTab"
 
+  " Trigger for the previous mapping of <CR>
+  let s:l2u_fallback_trigger_cr = "\u0091L2UFallbackCR"
+
+  " Trigger for autosub completion cleanup autocommand
+  let s:l2u_autosub_cleanup_trigger = "\u0091L2UAutosubCleanup"
+
 endfunction
 
 " Each time the filetype changes, we may need to enable or
@@ -203,7 +191,7 @@ function! s:L2U_ismatch()
   if col0 == -1
     return 0
   endif
-  let base = l[col0 : col1-1]
+  let base = l[col0:col1-2]
   return has_key(g:l2u_symbols_dict, base)
 endfunction
 
@@ -258,8 +246,14 @@ function! LaTeXtoUnicode#completefunc(findstart, base)
       let b:l2u_in_fallback = 0
       return -3
     endif
+    " make sure that the options are still set
+    " (it may happen that <C-X><C-U> itself triggers the fallback before
+    " restarting, thus reseetting them; this happens when the prompt is
+    " waiting for ^U^N^P during a partial completion)
     call s:L2U_SetCompleteopt()
+    " setup the cleanup/fallback operations when we're done
     call s:L2U_InsertCompleteDoneAutocommand()
+    call s:L2U_InsertInsertLeaveAutocommand()
     " set info for the callback
     let b:l2u_found_completion = 1
     " analyse current line
@@ -345,48 +339,83 @@ function! LaTeXtoUnicode#PutLiteral(k)
   return ''
 endfunction
 
+function! LaTeXtoUnicode#PutLiteralCR()
+  call feedkeys('
', 'ni')
+  return ''
+endfunction
+
 " Function which saves the current insert-mode mapping of a key sequence `s`
 " and associates it with another key sequence `k` (e.g. stores the current
-" <Tab> mapping into the Fallback trigger)
+" <Tab> mapping into the Fallback trigger).
+" It returns the previous maparg dictionary, so that the previous mapping can
+" be reinstated if needed.
 function! s:L2U_SetFallbackMapping(s, k)
   let mmdict = maparg(a:s, 'i', 0, 1)
   if empty(mmdict)
     exe 'inoremap <buffer> ' . a:k . ' ' . a:s
-    return
+    return mmdict
   endif
   let rhs = mmdict["rhs"]
   if rhs =~# '^<Plug>L2U'
-    return
+    return mmdict
   endif
   let pre = '<buffer>'
-  if mmdict["silent"]
-    let pre = pre . '<silent>'
-  endif
-  if mmdict["expr"]
-    let pre = pre . '<expr>'
-  endif
+  let pre = pre . (mmdict["silent"] ? '<silent>' : '')
+  let pre = pre . (mmdict["expr"] ? '<expr>' : '')
   if mmdict["noremap"]
     let cmd = 'inoremap '
   else
     let cmd = 'imap '
     " This is a nasty hack used to prevent infinite recursion. It's not a
-    " general solution.
+    " general solution. Also, it doesn't work with <CR> since that stops
+    " parsing of the <C-R>=... expression, so we need to special-case it.
+    " Also, if the original mapping was intended to be recursive, this
+    " will break it.
     if mmdict["expr"]
-      let rhs = substitute(rhs, '\c' . a:s, "\<C-R>=LaTeXtoUnicode#PutLiteral('" . a:s . "')\<CR>", 'g')
+      if a:s != "<CR>"
+        let rhs = substitute(rhs, '\c' . a:s, "\<C-R>=LaTeXtoUnicode#PutLiteral('" . a:s . "')\<CR>", 'g')
+      else
+        let rhs = substitute(rhs, '\c' . a:s, "\<C-R>=LaTeXtoUnicode#PutLiteralCR()\<CR>", 'g')
+      endif
+      " Make the mapping silent even if it wasn't originally
+      if !mmdict["silent"]
+        let pre = pre . '<silent>'
+      endif
     endif
   endif
   exe cmd . pre . ' ' . a:k . ' ' . rhs
+  return mmdict
+endfunction
+
+" Reinstate a mapping from the maparg dict returned by SetFallbackMapping
+" (only if buffer-local, since otherwise it should still be available)
+function! s:L2U_ReinstateMapping(mmdict)
+  if empty(a:mmdict) || !a:mmdict["buffer"]
+    return ''
+  endif
+  let lhs = a:mmdict["lhs"]
+  let rhs = a:mmdict["rhs"]
+  if rhs =~# '^<Plug>L2U'
+    return ''
+  endif
+  let pre = '<buffer>'
+  let pre = pre . (a:mmdict["silent"] ? '<silent>' : '')
+  let pre = pre . (a:mmdict["expr"] ? '<expr>' : '')
+  let cmd = a:mmdict["noremap"] ? 'inoremap ' : 'imap '
+  exe cmd . pre . ' ' . lhs . ' ' . rhs
 endfunction
 
 " This is the function which is mapped to <Tab>
 function! LaTeXtoUnicode#Tab()
   " the <Tab> is passed through to the fallback mapping if the completion
   " menu is present, and it hasn't been raised by the L2U tab, and there
-  " isn't an exact match before the cursor when suggestions are disabled
-  if pumvisible() && !b:l2u_tab_completing && (get(g:, "latex_to_unicode_suggestions", 1) || !s:L2U_ismatch())
+  " isn't an exact match before the cursor
+  if pumvisible() && !b:l2u_tab_completing && !s:L2U_ismatch()
     call feedkeys(s:l2u_fallback_trigger)
     return ''
   endif
+  " ensure that we start completion with some reasonable options
+  call s:L2U_SetCompleteopt()
   " reset the in_fallback info
   let b:l2u_in_fallback = 0
   let b:l2u_tab_completing = 1
@@ -497,7 +526,7 @@ function! s:L2U_RestoreCompleteopt()
 endfunction
 
 function! s:L2U_InsertCompleteDoneAutocommand()
-  augroup L2UTab
+  augroup L2UCompleteDone
     autocmd! * <buffer>
     " Every time a L2U completion finishes, the fallback may be invoked
     autocmd CompleteDone <buffer> call LaTeXtoUnicode#FallbackCallback()
@@ -505,8 +534,22 @@ function! s:L2U_InsertCompleteDoneAutocommand()
 endfunction
 
 function! s:L2U_RemoveCompleteDoneAutocommand()
-  augroup L2UTab
+  augroup L2UCompleteDone
+    autocmd! * <buffer>
+  augroup END
+endfunction
+
+function s:L2U_InsertLeaveClenup()
+    call s:L2U_ResetLastCompletionInfo()
+    augroup L2UInsertLeave
+      autocmd! * <buffer>
+    augroup END
+endfunction
+
+function! s:L2U_InsertInsertLeaveAutocommand()
+  augroup L2UInsertLeave
     autocmd! * <buffer>
+    autocmd InsertLeave <buffer> call s:L2U_InsertLeaveClenup()
   augroup END
 endfunction
 
@@ -537,12 +580,12 @@ function! s:L2U_SetTab(wait_insert_enter)
   endif
 
   " Backup the previous completefunc (the check is probably not really needed)
-  if get(b:, "prev_completefunc", "") != "LaTeXtoUnicode#completefunc"
-    let b:prev_completefunc = &completefunc
+  if get(b:, "l2u_prev_completefunc", "") != "LaTeXtoUnicode#completefunc"
+    let b:l2u_prev_completefunc = &completefunc
   endif
   setlocal completefunc=LaTeXtoUnicode#completefunc
 
-  call s:L2U_SetFallbackMapping('<Tab>', s:l2u_fallback_trigger)
+  let b:l2u_prev_map_tab = s:L2U_SetFallbackMapping('<Tab>', s:l2u_fallback_trigger)
   imap <buffer> <Tab> <Plug>L2UTab
   inoremap <buffer><expr> <Plug>L2UTab LaTeXtoUnicode#Tab()
 
@@ -560,10 +603,10 @@ function! s:L2U_UnsetTab()
   if !b:l2u_tab_set
     return
   endif
-  exec "setlocal completefunc=" . get(b:, "prev_completefunc", "")
+  exec "setlocal completefunc=" . get(b:, "l2u_prev_completefunc", "")
   iunmap <buffer> <Tab>
   if empty(maparg("<Tab>", "i"))
-    call s:L2U_SetFallbackMapping(s:l2u_fallback_trigger, '<Tab>')
+    call s:L2U_ReinstateMapping(b:l2u_prev_map_tab)
   endif
   iunmap <buffer> <Plug>L2UTab
   exe 'iunmap <buffer> ' . s:l2u_fallback_trigger
@@ -572,13 +615,25 @@ endfunction
 
 " Function which looks for viable LaTeX-to-Unicode supstitutions as you type
 function! LaTeXtoUnicode#AutoSub(...)
+  " avoid recursive calls
+  if get(b:, "l2u_in_autosub", 0)
+    return ''
+  endif
   let vc = a:0 == 0 ? v:char : a:1
+  " for some reason function keys seem to be passed as characters 149 (F1-F12)
+  " or 186 (F13-F37, these are entered with shift/ctrl). In such cases, we
+  " can't really do any better than giving up.
+  if char2nr(vc) == 149 || char2nr(vc) == 186
+    return ''
+  endif
+  let b:l2u_in_autosub = 1
   let col1 = col('.')
   let lnum = line('.')
   if col1 == 1
     if a:0 > 1
-      call feedkeys(a:2, 'n')
+      call feedkeys(a:2, 't')
     endif
+    let b:l2u_in_autosub = 0
     return ''
   endif
   let bs = (vc != "\n")
@@ -586,21 +641,42 @@ function! LaTeXtoUnicode#AutoSub(...)
   let col0 = match(l, '\\\%([_^]\?[A-Za-z]\+\%' . col1 . 'c\%([^A-Za-z]\|$\)\|[_^]\%([0-9()=+-]\)\%' . col1 .'c\%(.\|$\)\)')
   if col0 == -1
     if a:0 > 1
-      call feedkeys(a:2, 'n')
+      call feedkeys(a:2, 't')
     endif
+    let b:l2u_in_autosub = 0
     return ''
   endif
-  let base = l[col0 : -1-bs]
+  let base = l[col0 : col1-1-bs]
   let unicode = get(g:l2u_symbols_dict, base, '')
   if empty(unicode)
     if a:0 > 1
-      call feedkeys(a:2, 'n')
+      call feedkeys(a:2, 't')
     endif
+    let b:l2u_in_autosub = 0
     return ''
   endif
+
+  " create a temporary mapping to reset b:l2u_in_autosub when done
+  " (when invoked, it removes itself)
+  exec 'imap <buffer> ' . s:l2u_autosub_cleanup_trigger . ' <Plug>L2UAutosubReset'
+  inoremap <buffer><expr> <Plug>L2UAutosubReset <SID>L2U_AutosubReset()
+
+  " perform the substitution, wrapping it in undo breakpoints so that
+  " we can revert it as a whole
   call feedkeys("\<C-G>u", 'n')
   call feedkeys(repeat("\b", len(base) + bs) . unicode . vc . s:l2u_esc_sequence, 'nt')
   call feedkeys("\<C-G>u", 'n')
+  " enqueue the reset mechanism
+  call feedkeys(s:l2u_autosub_cleanup_trigger)
+  return ''
+endfunction
+
+function! s:L2U_AutosubReset()
+  " no longer doing substitution
+  let b:l2u_in_autosub = 0
+  " remove the mapping that triggered this function
+  exec 'iunmap <buffer> ' . s:l2u_autosub_cleanup_trigger
+  iunmap <buffer> <Plug>L2UAutosubReset
   return ''
 endfunction
 
@@ -619,8 +695,10 @@ function! s:L2U_SetAutoSub(wait_insert_enter)
   " Viable substitutions are searched at every character insertion via the
   " autocmd InsertCharPre. The <Enter> key does not seem to be catched in
   " this way though, so we use a mapping for that case.
+
+  let b:l2u_prev_map_cr = s:L2U_SetFallbackMapping('<CR>', s:l2u_fallback_trigger_cr)
   imap <buffer> <CR> <Plug>L2UAutoSub
-  inoremap <buffer><expr> <Plug>L2UAutoSub LaTeXtoUnicode#AutoSub("\n", "\<CR>")
+  exec 'inoremap <buffer><expr> <Plug>L2UAutoSub LaTeXtoUnicode#AutoSub("\n", "' . s:l2u_fallback_trigger_cr . '")'
 
   augroup L2UAutoSub
     autocmd! * <buffer>
@@ -637,7 +715,11 @@ function! s:L2U_UnsetAutoSub()
   endif
 
   iunmap <buffer> <CR>
+  if empty(maparg("<CR>", "i"))
+    call s:L2U_ReinstateMapping(b:l2u_prev_map_cr)
+  endif
   iunmap <buffer> <Plug>L2UAutoSub
+  exe 'iunmap <buffer> ' . s:l2u_fallback_trigger_cr
   augroup L2UAutoSub
     autocmd! * <buffer>
   augroup END
diff --git a/autoload/csv.vim b/autoload/csv.vim
index e47ee41d..d268cd12 100644
--- a/autoload/csv.vim
+++ b/autoload/csv.vim
@@ -1989,7 +1989,6 @@ fu! csv#AnalyzeColumn(...) "{{{3
     endif
 
     let  title="Nr\tCount\t % \tValue"
-    endif
     echohl Title
     echo printf("%s", title)
     echohl Normal
@@ -2311,7 +2310,7 @@ fu! csv#CommandDefinitions() "{{{3
     call csv#LocalCmd("NewDelimiter", ':call csv#NewDelimiter(<q-args>, 1, line(''$''))',
         \ '-nargs=1')
     call csv#LocalCmd("Duplicates", ':call csv#CheckDuplicates(<q-args>)',
-        \ '-nargs=1 -complete=custom,csv#CompleteColumnNr')
+        \ '-nargs=? -complete=custom,csv#CompleteColumnNr')
     call csv#LocalCmd('Transpose', ':call csv#Transpose(<line1>, <line2>)',
         \ '-range=%')
     call csv#LocalCmd('CSVTabularize', ':call csv#Tabularize(<bang>0,<line1>,<line2>)',
@@ -2499,12 +2498,16 @@ fu! csv#CompleteColumnNr(A,L,P) "{{{3
     return join(range(1,csv#MaxColumns()), "\n")
 endfu
 fu! csv#CheckDuplicates(list) "{{{3
-    let string = a:list
-    if string =~ '\d\s\?-\s\?\d'
-        let string = substitute(string, '\(\d\+\)\s\?-\s\?\(\d\+\)',
-            \ '\=join(range(submatch(1),submatch(2)), ",")', '')
+    if empty(a:list)
+        let list=[csv#WColumn()]
+    else
+        let string = a:list
+        if string =~ '\d\s\?-\s\?\d'
+            let string = substitute(string, '\(\d\+\)\s\?-\s\?\(\d\+\)',
+                \ '\=join(range(submatch(1),submatch(2)), ",")', '')
+        endif
+        let list=split(string, ',')
     endif
-    let list=split(string, ',')
     call csv#DuplicateRows(list)
 endfu
 fu! csv#Transpose(line1, line2) "{{{3
diff --git a/autoload/fsharp.vim b/autoload/fsharp.vim
index a37a92e7..89287042 100644
--- a/autoload/fsharp.vim
+++ b/autoload/fsharp.vim
@@ -336,6 +336,7 @@ function! s:download(branch)
         \ )
     if v:shell_error == 0
         call system('unzip -o -d ' . s:script_root_dir . "/fsac " . zip)
+        call system('find ' . s:script_root_dir . '/fsac' . ' -type f -exec chmod 777 \{\} \;')
         echom "[FSAC] Updated FsAutoComplete to version " . a:branch . "" 
     else
         echom "[FSAC] Failed to update FsAutoComplete"
diff --git a/autoload/go/config.vim b/autoload/go/config.vim
index cafba5f4..d20ead8b 100644
--- a/autoload/go/config.vim
+++ b/autoload/go/config.vim
@@ -315,7 +315,7 @@ function! go#config#FmtAutosave() abort
 endfunction
 
 function! go#config#ImportsAutosave() abort
-  return get(g:, 'go_imports_autosave', 0)
+  return get(g:, 'go_imports_autosave', 1)
 endfunction
 
 function! go#config#SetFmtAutosave(value) abort
@@ -359,11 +359,11 @@ function! go#config#DeclsMode() abort
 endfunction
 
 function! go#config#FmtCommand() abort
-  return get(g:, "go_fmt_command", "gofmt")
+  return get(g:, "go_fmt_command", go#config#GoplsEnabled() ? 'gopls' : 'gofmt')
 endfunction
 
 function! go#config#ImportsMode() abort
-  return get(g:, "go_imports_mode", "goimports")
+  return get(g:, "go_imports_mode", go#config#GoplsEnabled() ? 'gopls' : 'goimports')
 endfunction
 
 function! go#config#FmtOptions() abort
@@ -388,7 +388,7 @@ function! go#config#RenameCommand() abort
 endfunction
 
 function! go#config#GorenameBin() abort
-  return get(g:, "go_gorename_bin", "gopls")
+  return get(g:, "go_gorename_bin", 'gopls')
 endfunction
 
 function! go#config#GorenamePrefill() abort
diff --git a/autoload/graphql.vim b/autoload/graphql.vim
index 6dc441c6..135d184a 100644
--- a/autoload/graphql.vim
+++ b/autoload/graphql.vim
@@ -2,7 +2,7 @@ if polyglot#init#is_disabled(expand('<sfile>:p'), 'graphql', 'autoload/graphql.v
   finish
 endif
 
-" Copyright (c) 2016-2020 Jon Parise <jon@indelible.org>
+" Copyright (c) 2016-2021 Jon Parise <jon@indelible.org>
 "
 " Permission is hereby granted, free of charge, to any person obtaining a copy
 " of this software and associated documentation files (the "Software"), to
diff --git a/autoload/polyglot/init.vim b/autoload/polyglot/init.vim
index 1784f4e1..d2199398 100644
--- a/autoload/polyglot/init.vim
+++ b/autoload/polyglot/init.vim
@@ -1321,7 +1321,7 @@ endif
 
 if !has_key(g:polyglot_is_disabled, 'html')
   au BufNewFile,BufRead,BufWritePost *.html call polyglot#detect#Html()
-  au BufNewFile,BufRead *.htm,*.html.hl,*.inc,*.st,*.xht,*.xhtml setf html
+  au BufNewFile,BufRead *.htm,*.html.hl,*.inc,*.xht,*.xhtml setf html
 endif
 
 if !has_key(g:polyglot_is_disabled, 'hollywood')
@@ -2000,7 +2000,7 @@ if !has_key(g:polyglot_is_disabled, 'rspec')
 endif
 
 if !has_key(g:polyglot_is_disabled, 'ruby')
-  au BufNewFile,BufRead *.axlsx,*.builder,*.cap,*.eye,*.fcgi,*.gemspec,*.god,*.jbuilder,*.mspec,*.opal,*.pluginspec,*.podspec,*.rabl,*.rake,*.rant,*.rb,*.rbi,*.rbuild,*.rbw,*.rbx,*.rjs,*.ru,*.ruby,*.rxml,*.spec,*.thor,*.watchr,{.,}Brewfile,{.,}Guardfile,{.,}autotest,{.,}irbrc,{.,}pryrc,{.,}simplecov,Appraisals,Berksfile,Buildfile,Capfile,Cheffile,Dangerfile,Deliverfile,Fastfile,Gemfile,Gemfile.lock,Guardfile,Jarfile,KitchenSink,Mavenfile,Podfile,Puppetfile,Rakefile,Routefile,Snapfile,Thorfile,Vagrantfile,[Rr]antfile,buildfile,vagrantfile setf ruby
+  au BufNewFile,BufRead *.axlsx,*.builder,*.cap,*.eye,*.fcgi,*.gemspec,*.god,*.jbuilder,*.mspec,*.opal,*.pluginspec,*.podspec,*.prawn,*.rabl,*.rake,*.rant,*.rb,*.rbi,*.rbuild,*.rbw,*.rbx,*.rjs,*.ru,*.ruby,*.rxml,*.spec,*.thor,*.watchr,{.,}Brewfile,{.,}Guardfile,{.,}autotest,{.,}irbrc,{.,}pryrc,{.,}simplecov,Appraisals,Berksfile,Buildfile,Capfile,Cheffile,Dangerfile,Deliverfile,Fastfile,Gemfile,Guardfile,Jarfile,KitchenSink,Mavenfile,Podfile,Puppetfile,Rakefile,Routefile,Snapfile,Thorfile,Vagrantfile,[Rr]antfile,buildfile,vagrantfile setf ruby
   au BufNewFile,BufRead [Rr]akefile* call s:StarSetf('ruby')
   au BufNewFile,BufRead *.erb,*.erb.deface,*.rhtml setf eruby
 endif
@@ -2592,7 +2592,7 @@ if !has_key(g:polyglot_is_disabled, 'ant')
 endif
 
 if !has_key(g:polyglot_is_disabled, 'xml')
-  au BufNewFile,BufRead *.adml,*.admx,*.ant,*.axml,*.builds,*.ccproj,*.ccxml,*.cdxml,*.clixml,*.cproject,*.cscfg,*.csdef,*.csl,*.csproj,*.csproj.user,*.ct,*.depproj,*.dita,*.ditamap,*.ditaval,*.dll.config,*.dotsettings,*.filters,*.fsproj,*.fxml,*.glade,*.gml,*.gmx,*.grxml,*.gst,*.iml,*.ivy,*.jelly,*.jsproj,*.kml,*.launch,*.mdpolicy,*.mjml,*.mm,*.mod,*.mxml,*.natvis,*.ncl,*.ndproj,*.nproj,*.nuspec,*.odd,*.osm,*.pkgproj,*.pluginspec,*.proj,*.props,*.psc1,*.pt,*.rdf,*.res,*.resx,*.rs,*.rss,*.sch,*.scxml,*.sfproj,*.shproj,*.srdf,*.storyboard,*.sublime-snippet,*.targets,*.tml,*.tpm,*.ui,*.urdf,*.ux,*.vbproj,*.vcxproj,*.vsixmanifest,*.vssettings,*.vstemplate,*.vxml,*.wixproj,*.workflow,*.wpl,*.wsdl,*.wsf,*.wxi,*.wxl,*.wxs,*.x3d,*.xacro,*.xaml,*.xib,*.xlf,*.xliff,*.xmi,*.xml,*.xml.dist,*.xproj,*.xsd,*.xspec,*.xul,*.zcml,*/etc/blkid.tab,*/etc/blkid.tab.old,*/etc/xdg/menus/*.menu,*fglrxrc,{.,}classpath,{.,}cproject,{.,}project,App.config,NuGet.config,Settings.StyleCop,Web.Debug.config,Web.Release.config,Web.config,packages.config setf xml
+  au BufNewFile,BufRead *.adml,*.admx,*.ant,*.axml,*.builds,*.ccproj,*.ccxml,*.cdxml,*.clixml,*.cproject,*.cscfg,*.csdef,*.csl,*.csproj,*.csproj.user,*.ct,*.depproj,*.dita,*.ditamap,*.ditaval,*.dll.config,*.dotsettings,*.filters,*.fsproj,*.fxml,*.glade,*.gml,*.gmx,*.grxml,*.gst,*.iml,*.ivy,*.jelly,*.jsproj,*.kml,*.launch,*.mdpolicy,*.mjml,*.mm,*.mod,*.mxml,*.natvis,*.ncl,*.ndproj,*.nproj,*.nuspec,*.odd,*.osm,*.pkgproj,*.pluginspec,*.proj,*.props,*.psc1,*.pt,*.rdf,*.res,*.resx,*.rs,*.rss,*.sch,*.scxml,*.sfproj,*.shproj,*.srdf,*.storyboard,*.sublime-snippet,*.targets,*.tml,*.tpm,*.ui,*.urdf,*.ux,*.vbproj,*.vcxproj,*.vsixmanifest,*.vssettings,*.vstemplate,*.vxml,*.wixproj,*.workflow,*.wpl,*.wsdl,*.wsf,*.wxi,*.wxl,*.wxs,*.x3d,*.xacro,*.xaml,*.xib,*.xlf,*.xliff,*.xmi,*.xml,*.xml.dist,*.xmp,*.xproj,*.xsd,*.xspec,*.xul,*.zcml,*/etc/blkid.tab,*/etc/blkid.tab.old,*/etc/xdg/menus/*.menu,*fglrxrc,{.,}classpath,{.,}cproject,{.,}project,App.config,NuGet.config,Settings.StyleCop,Web.Debug.config,Web.Release.config,Web.config,packages.config setf xml
 endif
 
 if !has_key(g:polyglot_is_disabled, 'csv')
diff --git a/autoload/polyglot/sleuth.vim b/autoload/polyglot/sleuth.vim
index 5a7dd312..afb23ae4 100644
--- a/autoload/polyglot/sleuth.vim
+++ b/autoload/polyglot/sleuth.vim
@@ -229,7 +229,7 @@ let s:globs = {
   \ 'hollywood': '*.hws',
   \ 'hostconf': '',
   \ 'hostsaccess': '',
-  \ 'html': '*.html,*.htm,*.html.hl,*.inc,*.st,*.xht,*.xhtml',
+  \ 'html': '*.html,*.htm,*.html.hl,*.inc,*.xht,*.xhtml',
   \ 'html.handlebars': '*.handlebars,*.hbs,*.hdbs,*.hb',
   \ 'html.mustache': '*.mustache,*.hogan,*.hulk,*.hjs',
   \ 'html.twig': '*.twig',
@@ -462,7 +462,7 @@ let s:globs = {
   \ 'rrst': '*.rrst,*.srst',
   \ 'rst': '*.rst,*.rest,*.rest.txt,*.rst.txt',
   \ 'rtf': '*.rtf',
-  \ 'ruby': '*.rb,*.builder,*.eye,*.fcgi,*.gemspec,*.god,*.jbuilder,*.mspec,*.pluginspec,*.podspec,*.rabl,*.rake,*.rbi,*.rbuild,*.rbw,*.rbx,*.ru,*.ruby,*.spec,*.thor,*.watchr,*.rxml,*.rjs,*.rant,*.axlsx,*.cap,*.opal,.irbrc,.pryrc,.simplecov,Appraisals,Berksfile,Buildfile,Capfile,Dangerfile,Deliverfile,Fastfile,Gemfile,Gemfile.lock,Guardfile,Jarfile,Mavenfile,Podfile,Puppetfile,Rakefile,Snapfile,Thorfile,Vagrantfile,buildfile,[Rr]antfile,.autotest,Cheffile,KitchenSink,Routefile,.Guardfile,.Brewfile,vagrantfile,[Rr]akefile*,*_spec.rb',
+  \ 'ruby': '*.rb,*.builder,*.eye,*.fcgi,*.gemspec,*.god,*.jbuilder,*.mspec,*.pluginspec,*.podspec,*.prawn,*.rabl,*.rake,*.rbi,*.rbuild,*.rbw,*.rbx,*.ru,*.ruby,*.spec,*.thor,*.watchr,*.rxml,*.rjs,*.rant,*.axlsx,*.cap,*.opal,.irbrc,.pryrc,.simplecov,Appraisals,Berksfile,Buildfile,Capfile,Dangerfile,Deliverfile,Fastfile,Gemfile,Guardfile,Jarfile,Mavenfile,Podfile,Puppetfile,Rakefile,Snapfile,Thorfile,Vagrantfile,buildfile,[Rr]antfile,.autotest,Cheffile,KitchenSink,Routefile,.Guardfile,.Brewfile,vagrantfile,[Rr]akefile*,*_spec.rb',
   \ 'rust': '*.rs,*.rs.in',
   \ 'samba': 'smb.conf',
   \ 'sas': '*.sas',
@@ -612,7 +612,7 @@ let s:globs = {
   \ 'xhtml': '*.xhtml,*.xht',
   \ 'xinetd': '',
   \ 'xmath': '*.msc,*.msf',
-  \ 'xml': '*.xml,*.adml,*.admx,*.ant,*.axml,*.builds,*.ccproj,*.ccxml,*.clixml,*.cproject,*.cscfg,*.csdef,*.csl,*.csproj,*.ct,*.depproj,*.dita,*.ditamap,*.ditaval,*.dll.config,*.dotsettings,*.filters,*.fsproj,*.fxml,*.glade,*.gml,*.gmx,*.grxml,*.gst,*.iml,*.ivy,*.jelly,*.jsproj,*.kml,*.launch,*.mdpolicy,*.mjml,*.mm,*.mod,*.mxml,*.natvis,*.ncl,*.ndproj,*.nproj,*.nuspec,*.odd,*.osm,*.pkgproj,*.pluginspec,*.proj,*.props,*.psc1,*.pt,*.rdf,*.res,*.resx,*.rs,*.rss,*.sch,*.scxml,*.sfproj,*.shproj,*.srdf,*.storyboard,*.sublime-snippet,*.targets,*.tml,*.ui,*.urdf,*.ux,*.vbproj,*.vcxproj,*.vsixmanifest,*.vssettings,*.vstemplate,*.vxml,*.wixproj,*.workflow,*.wsdl,*.wsf,*.wxi,*.wxl,*.wxs,*.x3d,*.xacro,*.xaml,*.xib,*.xlf,*.xliff,*.xmi,*.xml.dist,*.xproj,*.xsd,*.xspec,*.xul,*.zcml,*.cdxml,*.tpm,*.csproj.user,*.wpl,.classpath,.cproject,.project,App.config,NuGet.config,Settings.StyleCop,Web.Debug.config,Web.Release.config,Web.config,packages.config,*fglrxrc',
+  \ 'xml': '*.xml,*.adml,*.admx,*.ant,*.axml,*.builds,*.ccproj,*.ccxml,*.clixml,*.cproject,*.cscfg,*.csdef,*.csl,*.csproj,*.ct,*.depproj,*.dita,*.ditamap,*.ditaval,*.dll.config,*.dotsettings,*.filters,*.fsproj,*.fxml,*.glade,*.gml,*.gmx,*.grxml,*.gst,*.iml,*.ivy,*.jelly,*.jsproj,*.kml,*.launch,*.mdpolicy,*.mjml,*.mm,*.mod,*.mxml,*.natvis,*.ncl,*.ndproj,*.nproj,*.nuspec,*.odd,*.osm,*.pkgproj,*.pluginspec,*.proj,*.props,*.psc1,*.pt,*.rdf,*.res,*.resx,*.rs,*.rss,*.sch,*.scxml,*.sfproj,*.shproj,*.srdf,*.storyboard,*.sublime-snippet,*.targets,*.tml,*.ui,*.urdf,*.ux,*.vbproj,*.vcxproj,*.vsixmanifest,*.vssettings,*.vstemplate,*.vxml,*.wixproj,*.workflow,*.wsdl,*.wsf,*.wxi,*.wxl,*.wxs,*.x3d,*.xacro,*.xaml,*.xib,*.xlf,*.xliff,*.xmi,*.xml.dist,*.xmp,*.xproj,*.xsd,*.xspec,*.xul,*.zcml,*.cdxml,*.tpm,*.csproj.user,*.wpl,.classpath,.cproject,.project,App.config,NuGet.config,Settings.StyleCop,Web.Debug.config,Web.Release.config,Web.config,packages.config,*fglrxrc',
   \ 'xml.twig': '*.xml.twig',
   \ 'xmodmap': '*Xmodmap,*xmodmap*',
   \ 'xpm': '*.xpm,*.pm',
diff --git a/autoload/requirements.vim b/autoload/requirements.vim
index 717b6210..3d783794 100644
--- a/autoload/requirements.vim
+++ b/autoload/requirements.vim
@@ -3,7 +3,7 @@ if polyglot#init#is_disabled(expand('<sfile>:p'), 'requirements', 'autoload/requ
 endif
 
 " the Requirements File Format syntax support for Vim
-" Version: 1.5.3
+" Version: 1.6.0
 " Author:  raimon <raimon49@hotmail.com>
 " License: MIT LICENSE
 " The MIT License (MIT)
diff --git a/autoload/zig/fmt.vim b/autoload/zig/fmt.vim
index 3474f34a..7d7872f9 100644
--- a/autoload/zig/fmt.vim
+++ b/autoload/zig/fmt.vim
@@ -12,11 +12,13 @@ function! zig#fmt#Format() abort
   " Save cursor position and many other things.
   let view = winsaveview()
 
-  let current_buf = bufnr('')
+  if !executable('zig')
+    echohl Error | echomsg "no zig binary found in PATH" | echohl None
+    return
+  endif
 
-  let bin_path = get(g:, 'zig_bin_path', 'zig')
-  let stderr_file = tempname()
-  let cmdline = printf('%s fmt --stdin 2> %s', bin_path, stderr_file)
+  let cmdline = 'zig fmt --stdin'
+  let current_buf = bufnr('')
 
   " The formatted code is output on stdout, the errors go on stderr.
   if exists('*systemlist')
@@ -42,7 +44,7 @@ function! zig#fmt#Format() abort
     call setloclist(0, [], 'r')
     lclose
   elseif get(g:, 'zig_fmt_parse_errors', 1)
-    let errors = s:parse_errors(expand('%'), readfile(stderr_file))
+    let errors = s:parse_errors(expand('%'), out)
 
     call setloclist(0, [], 'r', {
         \ 'title': 'Errors',
@@ -53,11 +55,9 @@ function! zig#fmt#Format() abort
     " Prevent the loclist from becoming too long.
     let win_height = min([max_win_height, len(errors)])
     " Open the loclist, but only if there's at least one error to show.
-    execute 'lwindow ' . win_height
+    execute 'silent! lwindow ' . win_height
   endif
 
-  call delete(stderr_file)
-
   call winrestview(view)
 
   if err != 0
diff --git a/extras/filetype.vim b/extras/filetype.vim
index e3971843..830e0949 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 Jan 21
+" Last Change:	2021 Apr 05
 
 " Listen very carefully, I will say this only once
 if exists("did_load_filetypes")
@@ -168,6 +168,9 @@ au BufNewFile,BufRead *.mar			setf vmasm
 " Atlas
 au BufNewFile,BufRead *.atl,*.as		setf atlas
 
+" Atom is based on XML
+au BufNewFile,BufRead *.atom			setf xml
+
 " Autoit v3
 au BufNewFile,BufRead *.au3			setf autoit
 
@@ -1276,6 +1279,11 @@ au BufNewFile,BufRead .povrayrc			setf povini
 " Povray, Pascal, PHP or assembly
 au BufNewFile,BufRead *.inc			call polyglot#ft#FTinc()
 
+" PowerShell
+au BufNewFile,BufRead	*.ps1,*.psd1,*.psm1,*.pssc	setf ps1
+au BufNewFile,BufRead	*.ps1xml			setf ps1xml
+au BufNewFile,BufRead	*.cdxml,*.psc1			setf xml
+
 " Printcap and Termcap
 au BufNewFile,BufRead *printcap
 	\ let b:ptcap_type = "print" | setf ptcap
@@ -1334,6 +1342,9 @@ au BufNewFile,BufRead *.pml			setf promela
 au BufNewFile,BufRead *.proto			setf proto
 au BufNewFile,BufRead *.pbtxt			setf pbtxt
 
+" Poke
+au BufNewFile,BufRead *.pk      		setf poke
+
 " Protocols
 au BufNewFile,BufRead */etc/protocols		setf protocols
 
@@ -1391,6 +1402,9 @@ else
   au BufNewFile,BufRead *.rmd,*.smd			setf rmd
 endif
 
+" RSS looks like XML
+au BufNewFile,BufRead *.rss				setf xml
+
 " R reStructuredText file
 if has("fname_case")
   au BufNewFile,BufRead *.Rrst,*.rrst,*.Srst,*.srst	setf rrst
@@ -1543,11 +1557,10 @@ au BufNewFile,BufRead catalog			setf catalog
 " Gentoo ebuilds, Arch Linux PKGBUILDs and Alpine Linux APKBUILDs are actually
 " bash scripts.
 " NOTE: Patterns ending in a star are further down, these have lower priority.
-au BufNewFile,BufRead .bashrc,bashrc,bash.bashrc,.bash[_-]profile,.bash[_-]logout,.bash[_-]aliases,bash-fc[-.],*.bash,*/{,.}bash[_-]completion{,.d,.sh}{,/*},*.ebuild,*.eclass,PKGBUILD,APKBUILD call polyglot#ft#SetFileTypeSH("bash")
+au BufNewFile,BufRead .bashrc,bashrc,bash.bashrc,.bash[_-]profile,.bash[_-]logout,.bash[_-]aliases,bash-fc[-.],*.ebuild,*.bash,*.eclass,PKGBUILD,APKBUILD call polyglot#ft#SetFileTypeSH("bash")
 au BufNewFile,BufRead .kshrc,*.ksh call polyglot#ft#SetFileTypeSH("ksh")
 au BufNewFile,BufRead */etc/profile,.profile,*.sh,*.env call polyglot#ft#SetFileTypeSH(getline(1))
 
-
 " Shell script (Arch Linux) or PHP file (Drupal)
 au BufNewFile,BufRead *.install
 	\ if getline(1) =~ '<?php' |
@@ -2216,8 +2229,11 @@ au BufNewFile,BufRead .reminders*		call s:StarSetf('remind')
 " SGML catalog file
 au BufNewFile,BufRead sgml.catalog*		call s:StarSetf('catalog')
 
+" avoid doc files being recognized a shell files
+au BufNewFile,BufRead */doc/{,.}bash[_-]completion{,.d,.sh}{,/*} setf text
+
 " Shell scripts ending in a star
-au BufNewFile,BufRead .bashrc*,.bash[_-]profile*,.bash[_-]logout*,.bash[_-]aliases*,bash-fc[-.]*,PKGBUILD*,APKBUILD* call polyglot#ft#SetFileTypeSH("bash")
+au BufNewFile,BufRead .bashrc*,.bash[_-]profile*,.bash[_-]logout*,.bash[_-]aliases*,bash-fc[-.]*,PKGBUILD*,APKBUILD*,*/{,.}bash[_-]completion{,.d,.sh}{,/*} call polyglot#ft#SetFileTypeSH("bash")
 au BufNewFile,BufRead .kshrc* call polyglot#ft#SetFileTypeSH("ksh")
 au BufNewFile,BufRead .profile* call polyglot#ft#SetFileTypeSH(getline(1))
 
diff --git a/ftplugin/fortran.vim b/ftplugin/fortran.vim
index 3c2ebc87..bfca757e 100644
--- a/ftplugin/fortran.vim
+++ b/ftplugin/fortran.vim
@@ -4,14 +4,14 @@ endif
 
 " Vim settings file
 " Language:	Fortran 2008 (and older: Fortran 2003, 95, 90, 77, 66)
-" Version:	(v52) 2020 October 07
+" Version:	(v53) 2021 April 06
 " Maintainer:	Ajit J. Thakkar <ajit@unb.ca>; <http://www2.unb.ca/~ajit/>
 " Usage:	For instructions, do :help fortran-plugin from Vim
 " Credits:
 "  Version 0.1 was created in September 2000 by Ajit Thakkar.
 "  Since then, useful suggestions and contributions have been made, in order, by:
 "  Stefano Zacchiroli, Hendrik Merx, Ben Fritz, David Barnett, Eisuke Kawashima,
-"  and Doug Kearns.
+"  Doug Kearns, and Fritz Reese.
 
 " Only do these settings when not done yet for this buffer
 if exists("b:did_ftplugin")
@@ -70,12 +70,19 @@ endif
 " Set comments and textwidth according to source type
 if (b:fortran_fixed_source == 1)
   setlocal comments=:!,:*,:C
-  " Fixed format requires a textwidth of 72 for code
-  setlocal tw=72
+  " Fixed format requires a textwidth of 72 for code,
+  " but some vendor extensions allow longer lines
+  if exists("fortran_extended_line_length")
+    setlocal tw=132
+  elseif exists("fortran_cardimage_line_length")
+    setlocal tw=80
+  else
+    setlocal tw=72
   " If you need to add "&" on continued lines so that the code is
   " compatible with both free and fixed format, then you should do so
   " in column 73 and uncomment the next line
   " setlocal tw=73
+  endif
 else
   setlocal comments=:!
   " Free format allows a textwidth of 132
diff --git a/ftplugin/graphql.vim b/ftplugin/graphql.vim
index f0615552..1f9e1df9 100644
--- a/ftplugin/graphql.vim
+++ b/ftplugin/graphql.vim
@@ -2,7 +2,7 @@ if polyglot#init#is_disabled(expand('<sfile>:p'), 'graphql', 'ftplugin/graphql.v
   finish
 endif
 
-" Copyright (c) 2016-2020 Jon Parise <jon@indelible.org>
+" Copyright (c) 2016-2021 Jon Parise <jon@indelible.org>
 "
 " Permission is hereby granted, free of charge, to any person obtaining a copy
 " of this software and associated documentation files (the "Software"), to
diff --git a/ftplugin/lisp.vim b/ftplugin/lisp.vim
index cc86c720..e6bd3cb9 100644
--- a/ftplugin/lisp.vim
+++ b/ftplugin/lisp.vim
@@ -8,7 +8,7 @@ endif
 " URL:		 http://sites.google.com/site/khorser/opensource/vim
 " Original author:    Dorai Sitaram <ds26@gte.com>
 " Original URL:		 http://www.ccs.neu.edu/~dorai/vimplugins/vimplugins.html
-" Last Change:   Oct 23, 2013
+" Last Change:   Mar 10, 2021
 
 " Only do this when not done yet for this buffer
 if exists("b:did_ftplugin")
diff --git a/ftplugin/racket.vim b/ftplugin/racket.vim
index 8dd74d7f..f7f57a38 100644
--- a/ftplugin/racket.vim
+++ b/ftplugin/racket.vim
@@ -34,7 +34,7 @@ setl lispwords+=match-letrec,match-define,match-define-values
 setl lisp
 
 " Enable auto begin new comment line when continuing from an old comment line
-setl comments+=:;
+setl comments=:;;;;,:;;;,:;;,:;
 setl formatoptions+=r
 
 setl makeprg=raco\ make\ --\ %
diff --git a/ftplugin/raku.vim b/ftplugin/raku.vim
index 423dd786..ea2536b5 100644
--- a/ftplugin/raku.vim
+++ b/ftplugin/raku.vim
@@ -31,7 +31,7 @@ setlocal commentstring=#%s
 "---------------------------------------------
 setlocal include=\\<\\(use\\\|require\\)\\>
 setlocal includeexpr=substitute(v:fname,'::','/','g')
-setlocal suffixesadd=.pm6,.pm,.raku,.rakutest,.t6
+setlocal suffixesadd=.rakumod,.rakudoc,.pm6,.pm
 setlocal define=[^A-Za-z_]
 
 " The following line changes a global variable but is necessary to make
@@ -42,39 +42,23 @@ setlocal define=[^A-Za-z_]
 set isfname+=:
 setlocal iskeyword=@,48-57,_,192-255,-
 
-" Set this once, globally.
-if !exists("perlpath")
-    if executable("perl6")
-        try
-            if &shellxquote != '"'
-                let perlpath = system('perl6 -e  "@*INC.join(q/,/).say"')
-            else
-                let perlpath = system("perl6 -e  '@*INC.join(q/,/).say'")
-            endif
-            let perlpath = substitute(perlpath,',.$',',,','')
-        catch /E145:/
-            let perlpath = ".,,"
-        endtry
-    else
-        " If we can't call perl to get its path, just default to using the
-        " current directory and the directory of the current file.
-        let perlpath = ".,,"
-    endif
-endif
+" Raku exposes its CompUnits through $*REPO, but mapping module names to
+" compunit paths is nontrivial. Probably it's more convenient to rely on
+" people using zef, which has a handy store of sources for modules it has
+" installed.
+func s:compareReverseFtime(a, b)
+    let atime = getftime(a:a)
+    let btime = getftime(a:b)
+    return atime > btime ? -1 : atime == btime ? 0 : 1
+endfunc
 
-" Append perlpath to the existing path value, if it is set.  Since we don't
-" use += to do it because of the commas in perlpath, we have to handle the
-" global / local settings, too.
-if &l:path == ""
-    if &g:path == ""
-        let &l:path=perlpath
-    else
-        let &l:path=&g:path.",".perlpath
-    endif
-else
-    let &l:path=&l:path.",".perlpath
+let &l:path = "lib,."
+if exists('$RAKULIB')
+    let &l:path = &l:path . "," . $RAKULIB
 endif
-"---------------------------------------------
+let &l:path = &l:path . "," . join(
+            \ sort(glob("~/.zef/store/*/*/lib", 0, 1), "s:compareReverseFtime"),
+            \ ',')
 
 " Convert ascii-based ops into their single-character unicode equivalent
 if get(g:, 'raku_unicode_abbrevs', 0)
diff --git a/ftplugin/zig.vim b/ftplugin/zig.vim
index cb2f3e84..ee5ce79e 100644
--- a/ftplugin/zig.vim
+++ b/ftplugin/zig.vim
@@ -47,8 +47,10 @@ if exists("*json_decode") && executable('zig')
     unlet! s:env
 endif
 
+let &l:formatprg = 'zig fmt --stdin'
+
 let b:undo_ftplugin =
-    \ 'setl isk< et< ts< sts< sw< fo< sua< mp< com< cms< inex< inc< pa<'
+    \ 'setl isk< et< ts< sts< sw< fo< sua< mp< com< cms< inex< inc< pa< fp<'
 
 let &cpo = s:cpo_orig
 unlet s:cpo_orig
diff --git a/indent/cdl.vim b/indent/cdl.vim
index 9c261276..4c679e83 100644
--- a/indent/cdl.vim
+++ b/indent/cdl.vim
@@ -66,10 +66,14 @@ fun! CdlGetIndent(lnum)
   " PREVIOUS LINE
   let ind = indent(lnum)
   let line = getline(lnum)
-  let f = -1 " wether a '=' is a conditional or a asignment, -1 means we don't know yet
-  " one 'closing' element at the beginning of the line has already reduced the
-  "   indent, but 'else', 'elseif' & 'then' increment it for the next line
-  " '=' at the beginning has already de right indent (increased for asignments)
+
+  " Whether a '=' is a conditional or an assignment. -1 means we don't know
+  " yet.
+  " One 'closing' element at the beginning of the line has already reduced the
+  " indent, but 'else', 'elseif' & 'then' increment it for the next line.
+  " '=' at the beginning already has the right indent (increased for
+  " asignments).
+  let f = -1
   let inicio = matchend(line, '^\c\s*\(else\a*\|then\|endif\|/[*/]\|[);={]\)')
   if inicio > 0
     let c = line[inicio-1]
diff --git a/indent/graphql.vim b/indent/graphql.vim
index 97c56309..f6b6fcca 100644
--- a/indent/graphql.vim
+++ b/indent/graphql.vim
@@ -2,7 +2,7 @@ if polyglot#init#is_disabled(expand('<sfile>:p'), 'graphql', 'indent/graphql.vim
   finish
 endif
 
-" Copyright (c) 2016-2020 Jon Parise <jon@indelible.org>
+" Copyright (c) 2016-2021 Jon Parise <jon@indelible.org>
 "
 " Permission is hereby granted, free of charge, to any person obtaining a copy
 " of this software and associated documentation files (the "Software"), to
diff --git a/indent/julia.vim b/indent/julia.vim
index b40823c0..fe53789c 100644
--- a/indent/julia.vim
+++ b/indent/julia.vim
@@ -295,8 +295,8 @@ function IsFunctionArgPar(lnum, c)
   if a:c == 0
     return 0
   endif
-  let stack = map(synstack(a:lnum, a:c), 'synIDattr(v:val, "name")')
-  return len(stack) >= 3 && stack[-3] == 'juliaFunctionDefP'
+  let stack = map(synstack(a:lnum, a:c-1), 'synIDattr(v:val, "name")')
+  return len(stack) >= 2 && stack[-2] ==# 'juliaFunctionDef'
 endfunction
 
 function JumpToMatch(lnum, last_closed_bracket)
diff --git a/packages.yaml b/packages.yaml
index a102eebc..7021f3e1 100644
--- a/packages.yaml
+++ b/packages.yaml
@@ -887,7 +887,7 @@ globs:
 - '**/htmldjango.vim'
 filetypes:
 - name: htmldjango
-  linguist: HTML+Django
+  linguist: Jinja 
   ignore_warnings:
   # handled by mustache plugin
   - mustache
diff --git a/syntax/dot.vim b/syntax/dot.vim
index 1bb1032b..f48f60f4 100644
--- a/syntax/dot.vim
+++ b/syntax/dot.vim
@@ -2,19 +2,25 @@ if polyglot#init#is_disabled(expand('<sfile>:p'), 'dot', 'syntax/dot.vim')
   finish
 endif
 
-" Vim syntax file
 " Language:     Dot
 " Filenames:    *.dot
 " Maintainer:   Markus Mottl  <markus.mottl@gmail.com>
 " URL:          http://www.ocaml.info/vim/syntax/dot.vim
-" Last Change:  2011 May 17 - improved identifier matching + two new keywords
+" Last Change:  2021 Mar 24 - better attr + escape string matching, new keywords (Farbod Salamat-Zadeh)
+"               2011 May 17 - improved identifier matching + two new keywords
 "               2001 May 04 - initial version
 
-" quit when a syntax file was already loaded
-if exists("b:current_syntax")
+" For version 5.x: Clear all syntax items
+" For version 6.x: Quit when a syntax file was already loaded
+if version < 600
+  syntax clear
+elseif exists("b:current_syntax")
   finish
 endif
 
+let s:keepcpo = &cpo
+set cpo&vim
+
 " Errors
 syn match    dotParErr     ")"
 syn match    dotBrackErr   "]"
@@ -33,39 +39,43 @@ syn keyword  dotTodo contained TODO FIXME XXX
 " Strings
 syn region   dotString    start=+"+ skip=+\\\\\|\\"+ end=+"+
 
-" General keywords
-syn keyword  dotKeyword  digraph node edge subgraph
-
-" Graph attributes
-syn keyword  dotType center layers margin mclimit name nodesep nslimit
-syn keyword  dotType ordering page pagedir rank rankdir ranksep ratio
-syn keyword  dotType rotate size
-
-" Node attributes
-syn keyword  dotType distortion fillcolor fontcolor fontname fontsize
-syn keyword  dotType height layer orientation peripheries regular
-syn keyword  dotType shape shapefile sides skew width
+" Escape strings
+syn match    dotEscString /\v\\(N|G|E|T|H|L)/ containedin=dotString
+syn match    dotEscString /\v\\(n|l|r)/       containedin=dotString
 
-" Edge attributes
-syn keyword  dotType arrowhead arrowsize arrowtail constraint decorateP
-syn keyword  dotType dir headclip headlabel headport labelangle labeldistance
-syn keyword  dotType labelfontcolor labelfontname labelfontsize
-syn keyword  dotType minlen port_label_distance samehead sametail
-syn keyword  dotType tailclip taillabel tailport weight
-
-" Shared attributes (graphs, nodes, edges)
-syn keyword  dotType color
-
-" Shared attributes (graphs and edges)
-syn keyword  dotType bgcolor label URL
-
-" Shared attributes (nodes and edges)
-syn keyword  dotType fontcolor fontname fontsize layer style
+" General keywords
+syn keyword  dotKeyword graph digraph subgraph node edge strict
+
+" Node, edge and graph attributes
+syn keyword  dotType _background area arrowhead arrowsize arrowtail bb bgcolor
+      \ center charset class clusterrank color colorscheme comment compound
+      \ concentrate constraint Damping decorate defaultdist dim dimen dir
+      \ diredgeconstraints distortion dpi edgehref edgetarget edgetooltip
+      \ edgeURL epsilon esep fillcolor fixedsize fontcolor fontname fontnames
+      \ fontpath fontsize forcelabels gradientangle group head_lp headclip
+      \ headhref headlabel headport headtarget headtooltip headURL height href
+      \ id image imagepath imagepos imagescale inputscale K label label_scheme
+      \ labelangle labeldistance labelfloat labelfontcolor labelfontname
+      \ labelfontsize labelhref labeljust labelloc labeltarget labeltooltip
+      \ labelURL landscape layer layerlistsep layers layerselect layersep 
+      \ layout len levels levelsgap lhead lheight lp ltail lwidth margin
+      \ maxiter mclimit mindist minlen mode model mosek newrank nodesep 
+      \ nojustify normalize notranslate nslimit nslimit1 ordering orientation
+      \ outputorder overlap overlap_scaling overlap_shrink pack packmode pad
+      \ page pagedir pencolor penwidth peripheries pin pos quadtree quantum
+      \ rank rankdir ranksep ratio rects regular remincross repulsiveforce
+      \ resolution root rotate rotation samehead sametail samplepoints scale
+      \ searchsize sep shape shapefile showboxes sides size skew smoothing
+      \ sortv splines start style stylesheet tail_lp tailclip tailhref 
+      \ taillabel tailport tailtarget tailtooltip tailURL target tooltip
+      \ truecolor URL vertices viewport voro_margin weight width xdotversion 
+      \ xlabel xlp z
 
 " Special chars
 syn match    dotKeyChar  "="
 syn match    dotKeyChar  ";"
 syn match    dotKeyChar  "->"
+syn match    dotKeyChar  "--"
 
 " Identifier
 syn match    dotIdentifier /\<\w\+\(:\w\+\)\?\>/
@@ -75,27 +85,41 @@ syn sync minlines=50
 syn sync maxlines=500
 
 " Define the default highlighting.
-" Only when an item doesn't have highlighting yet
-
-hi def link dotParErr	 Error
-hi def link dotBraceErr	 Error
-hi def link dotBrackErr	 Error
-
-hi def link dotComment	 Comment
-hi def link dotTodo	 Todo
-
-hi def link dotParEncl	 Keyword
-hi def link dotBrackEncl	 Keyword
-hi def link dotBraceEncl	 Keyword
-
-hi def link dotKeyword	 Keyword
-hi def link dotType	 Type
-hi def link dotKeyChar	 Keyword
-
-hi def link dotString	 String
-hi def link dotIdentifier	 Identifier
-
+" For version 5.7 and earlier: only when not done already
+" For version 5.8 and later: only when an item doesn't have highlighting yet
+if version >= 508 || !exists("did_dot_syntax_inits")
+  if version < 508
+    let did_dot_syntax_inits = 1
+    command -nargs=+ HiLink hi link <args>
+  else
+    command -nargs=+ HiLink hi def link <args>
+  endif
+
+  HiLink dotParErr	 Error
+  HiLink dotBraceErr	 Error
+  HiLink dotBrackErr	 Error
+
+  HiLink dotComment	 Comment
+  HiLink dotTodo	 Todo
+
+  HiLink dotParEncl	 Keyword
+  HiLink dotBrackEncl	 Keyword
+  HiLink dotBraceEncl	 Keyword
+
+  HiLink dotKeyword	 Keyword
+  HiLink dotType	 Type
+  HiLink dotKeyChar	 Keyword
+
+  HiLink dotString	 String
+  HiLink dotEscString	 Keyword
+  HiLink dotIdentifier	 Identifier
+
+  delcommand HiLink
+endif
 
 let b:current_syntax = "dot"
 
+let &cpo = s:keepcpo
+unlet s:keepcpo
+
 " vim: ts=8
diff --git a/syntax/elixir.vim b/syntax/elixir.vim
index 871a4157..2c9dd2e5 100644
--- a/syntax/elixir.vim
+++ b/syntax/elixir.vim
@@ -12,7 +12,7 @@ endif
 let s:cpo_save = &cpo
 set cpo&vim
 
-syn cluster elixirNotTop contains=@elixirRegexSpecial,@elixirStringContained,@elixirDeclaration,elixirTodo,elixirArguments,elixirBlockDefinition,elixirUnusedVariable,elixirStructDelimiter
+syn cluster elixirNotTop contains=@elixirRegexSpecial,@elixirStringContained,@elixirDeclaration,elixirTodo,elixirArguments,elixirBlockDefinition,elixirUnusedVariable,elixirStructDelimiter,elixirListDelimiter
 syn cluster elixirRegexSpecial contains=elixirRegexEscape,elixirRegexCharClass,elixirRegexQuantifier,elixirRegexEscapePunctuation
 syn cluster elixirStringContained contains=elixirInterpolation,elixirRegexEscape,elixirRegexCharClass
 syn cluster elixirDeclaration contains=elixirFunctionDeclaration,elixirPrivateFunctionDeclaration,elixirModuleDeclaration,elixirProtocolDeclaration,elixirImplDeclaration,elixirRecordDeclaration,elixirPrivateRecordDeclaration,elixirMacroDeclaration,elixirPrivateMacroDeclaration,elixirDelegateDeclaration,elixirOverridableDeclaration,elixirExceptionDeclaration,elixirCallbackDeclaration,elixirStructDeclaration
@@ -70,12 +70,15 @@ syn match elixirRegexCharClass         "\[:\(alnum\|alpha\|ascii\|blank\|cntrl\|
 
 syn region elixirRegex matchgroup=elixirRegexDelimiter start="%r/" end="/[uiomxfr]*" skip="\\\\" contains=@elixirRegexSpecial
 
-syn region elixirTuple matchgroup=elixirTupleDelimiter start="\(\w\|#\)\@<!{" end="}" contains=ALLBUT,@elixirNotTop
+syn region elixirTuple matchgroup=elixirTupleDelimiter start="\(\w\|#\)\@<!{" end="}" contains=ALLBUT,@elixirNotTop fold
+
+syn match elixirListDelimiter '\[' contained containedin=elixirList
+syn region elixirList matchgroup=elixirListDelimiter start='\[' end='\]' contains=ALLBUT,@elixirNotTop fold
 
 syn match elixirStructDelimiter '{' contained containedin=elixirStruct
-syn region elixirStruct matchgroup=elixirStructDelimiter start="%\(\w\+{\)\@=" end="}" contains=ALLBUT,@elixirNotTop
+syn region elixirStruct matchgroup=elixirStructDelimiter start="%\(\w\+{\)\@=" end="}" contains=ALLBUT,@elixirNotTop fold
 
-syn region elixirMap matchgroup=elixirMapDelimiter start="%{" end="}" contains=ALLBUT,@elixirNotTop
+syn region elixirMap matchgroup=elixirMapDelimiter start="%{" end="}" contains=ALLBUT,@elixirNotTop fold
 
 syn region elixirString  matchgroup=elixirStringDelimiter start=+\z('\)+   end=+\z1+ skip=+\\\\\|\\\z1+  contains=@Spell,@elixirStringContained
 syn region elixirString  matchgroup=elixirStringDelimiter start=+\z("\)+   end=+\z1+ skip=+\\\\\|\\\z1+  contains=@Spell,@elixirStringContained
diff --git a/syntax/fortran.vim b/syntax/fortran.vim
index 6085268b..20996946 100644
--- a/syntax/fortran.vim
+++ b/syntax/fortran.vim
@@ -4,7 +4,7 @@ endif
 
 " Vim syntax file
 " Language:	Fortran 2008 (and older: Fortran 2003, 95, 90, and 77)
-" Version:	(v103) 2020 October 07
+" Version:	(v104) 2021 April 06
 " Maintainer:	Ajit J. Thakkar <ajit@unb.ca>; <http://www2.unb.ca/~ajit/>
 " Usage:	For instructions, do :help fortran-syntax from Vim
 " Credits:
@@ -12,10 +12,10 @@ endif
 "  older Fortran 77 syntax file by Mario Eusebio and Preben Guldberg.
 "  Since then, useful suggestions and contributions have been made, in order, by:
 "  Andrej Panjkov, Bram Moolenaar, Thomas Olsen, Michael Sternberg, Christian Reile,
-"  Walter Dieudonné, Alexander Wagner, Roman Bertle, Charles Rendleman,
+"  Walter Dieudonne, Alexander Wagner, Roman Bertle, Charles Rendleman,
 "  Andrew Griffiths, Joe Krahn, Hendrik Merx, Matt Thompson, Jan Hermann,
-"  Stefano Zaghi, Vishnu V. Krishnan, Judicaël Grasset, Takuma Yoshida,
-"  Eisuke Kawashima, and André Chalella.`
+"  Stefano Zaghi, Vishnu V. Krishnan, Judicael Grasset, Takuma Yoshida,
+"  Eisuke Kawashima, Andre Chalella, and Fritz Reese.
 
 if exists("b:current_syntax")
   finish
@@ -364,8 +364,15 @@ syn cluster fortranCommentGroup contains=fortranTodo
 
 if (b:fortran_fixed_source == 1)
   if !exists("fortran_have_tabs")
-    "Flag items beyond column 72
-    syn match fortranSerialNumber	excludenl "^.\{73,}$"lc=72
+    " Fixed format requires a textwidth of 72 for code,
+    " but some vendor extensions allow longer lines
+    if exists("fortran_extended_line_length")
+      syn match fortranSerialNumber	excludenl "^.\{133,}$"lc=132
+    elseif exists("fortran_cardimage_line_length")
+      syn match fortranSerialNumber	excludenl "^.\{81,}$"lc=80
+    else
+      syn match fortranSerialNumber	excludenl "^.\{73,}$"lc=72
+    endif
     "Flag left margin errors
     syn match fortranLabelError	"^.\{-,4}[^0-9 ]" contains=fortranTab
     syn match fortranLabelError	"^.\{4}\d\S"
diff --git a/syntax/git.vim b/syntax/git.vim
index 695566f0..d3d9485e 100644
--- a/syntax/git.vim
+++ b/syntax/git.vim
@@ -16,12 +16,12 @@ syn sync minlines=50
 
 syn include @gitDiff syntax/diff.vim
 
-syn region gitHead start=/\%^/ end=/^$/
-syn region gitHead start=/\%(^commit\%( \x\{40\}\)\{1,\}\%(\s*(.*)\)\=$\)\@=/ end=/^$/
+syn region gitHead start=/\%^/ end=/^$/ 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.*/
-syn match gitHead /^\x\{40\} \x\{40}\t.*/
+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 gitDiff start=/^\%(diff --git \)\@=/ end=/^\%(diff --\|$\)\@=/ contains=@gitDiff fold
 syn region gitDiff start=/^\%(@@ -\)\@=/ end=/^\%(diff --\%(git\|cc\|combined\) \|$\)\@=/ contains=@gitDiff
@@ -33,11 +33,12 @@ 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\)\>/ contained containedin=gitHead nextgroup=gitHash,gitType skipwhite
-syn match  gitKeyword /^\%(tag\>\|ref:\)/ contained containedin=gitHead nextgroup=gitReference skipwhite
-syn match  gitKeyword /^Merge:/  contained containedin=gitHead nextgroup=gitHashAbbrev skipwhite
+syn match  gitKeyword /^\%(object\|type\|tag\|commit\|tree\|parent\|encoding\|summary\|boundary\|filename\)\>/ contained containedin=gitHead nextgroup=gitHash,gitType skipwhite contains=@NoSpell
+syn match  gitKeyword /^previous\>/ contained containedin=gitHead nextgroup=gitHash skipwhite contains=@NoSpell
+syn match  gitKeyword /^\%(tag\>\|ref:\)/ contained containedin=gitHead nextgroup=gitReference 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\)\>/ contained containedin=gitHead nextgroup=gitIdentity skipwhite
+syn match  gitIdentityKeyword /^\%(author\|committer\|tagger\)\%(-mail\|-time\|-tz\)\=\>/ 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
 
@@ -51,10 +52,10 @@ 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  gitReference /\S\+\S\@!/                            contained
-syn match  gitHash      /\<\x\{40\}\>/                         contained nextgroup=gitIdentity,gitStage,gitHash skipwhite
-syn match  gitHash      /^\<\x\{40\}\>/ containedin=gitHead contained nextgroup=gitHash skipwhite
-syn match  gitHashAbbrev /\<\x\{4,40\}\>/           contained nextgroup=gitHashAbbrev skipwhite
-syn match  gitHashAbbrev /\<\x\{4,39\}\.\.\./he=e-3 contained nextgroup=gitHashAbbrev skipwhite
+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  gitHashAbbrev /\<\x\{4,39\}\.\.\./he=e-3 contained nextgroup=gitHashAbbrev skipwhite contains=@NoSpell
 
 syn match  gitIdentity /\S.\{-\} <[^>]*>/ contained nextgroup=gitDate skipwhite
 syn region gitEmail matchgroup=gitEmailDelimiter start=/</ end=/>/ keepend oneline contained containedin=gitIdentity
diff --git a/syntax/gitrebase.vim b/syntax/gitrebase.vim
index da5f01e8..64a97acb 100644
--- a/syntax/gitrebase.vim
+++ b/syntax/gitrebase.vim
@@ -14,8 +14,8 @@ endif
 
 syn case match
 
-syn match   gitrebaseHash   "\v<\x{7,}>"                               contained
-syn match   gitrebaseCommit "\v<\x{7,}>"    nextgroup=gitrebaseSummary skipwhite
+syn match   gitrebaseHash   "\v<\x{7,}>"                               contained contains=@NoSpell
+syn match   gitrebaseCommit "\v<\x{7,}>"    nextgroup=gitrebaseSummary skipwhite contains=@NoSpell
 syn match   gitrebasePick   "\v^p%(ick)=>"   nextgroup=gitrebaseCommit skipwhite
 syn match   gitrebaseReword "\v^r%(eword)=>" nextgroup=gitrebaseCommit skipwhite
 syn match   gitrebaseEdit   "\v^e%(dit)=>"   nextgroup=gitrebaseCommit skipwhite
diff --git a/syntax/gotexttmpl.vim b/syntax/gotexttmpl.vim
index cd29987a..806f71b1 100644
--- a/syntax/gotexttmpl.vim
+++ b/syntax/gotexttmpl.vim
@@ -70,16 +70,14 @@ syn cluster     gotplLiteral     contains=goString,goRawString,goCharacter,@goIn
 syn keyword     gotplControl     contained   if else end range with template
 syn keyword     gotplFunctions   contained   and html index js len not or print printf println urlquery eq ne lt le gt ge
 syn match       gotplVariable    contained   /\$[a-zA-Z0-9_]*\>/
-syn match       goTplIdentifier  contained   /\.[^\s}]+\>/
+syn match       goTplIdentifier  contained   /\.[^[:blank:]}]\+\>/
 
 hi def link     gotplControl        Keyword
 hi def link     gotplFunctions      Function
 hi def link     goTplVariable       Special
 
 syn region gotplAction start="{{" end="}}" contains=@gotplLiteral,gotplControl,gotplFunctions,gotplVariable,goTplIdentifier display
-syn region gotplAction start="\[\[" end="\]\]" contains=@gotplLiteral,gotplControl,gotplFunctions,gotplVariable display
 syn region goTplComment start="{{\(- \)\?/\*" end="\*/\( -\)\?}}" display
-syn region goTplComment start="\[\[\(- \)\?/\*" end="\*/\( -\)\?\]\]" display
 
 hi def link gotplAction PreProc
 hi def link goTplComment Comment
diff --git a/syntax/graphql.vim b/syntax/graphql.vim
index b2266cef..fc2b7922 100644
--- a/syntax/graphql.vim
+++ b/syntax/graphql.vim
@@ -2,7 +2,7 @@ if polyglot#init#is_disabled(expand('<sfile>:p'), 'graphql', 'syntax/graphql.vim
   finish
 endif
 
-" Copyright (c) 2016-2020 Jon Parise <jon@indelible.org>
+" Copyright (c) 2016-2021 Jon Parise <jon@indelible.org>
 "
 " Permission is hereby granted, free of charge, to any person obtaining a copy
 " of this software and associated documentation files (the "Software"), to
diff --git a/syntax/html.vim b/syntax/html.vim
index 2113f12a..2db2fe2d 100644
--- a/syntax/html.vim
+++ b/syntax/html.vim
@@ -7,8 +7,9 @@ endif
 " Previous Maintainer:  Jorge Maldonado Ventura <jorgesumle@freakspot.net>
 " Previous Maintainer:  Claudio Fleiner <claudio@fleiner.com>
 " Repository:           https://notabug.org/jorgesumle/vim-html-syntax
-" Last Change:          2021 Feb 25
+" Last Change:          2021 Mar 02
 "			Included patch #7900 to fix comments
+"			Included patch #7916 to fix a few more things
 "
 
 " Please check :help html.vim for some comments and a description of the options
@@ -83,26 +84,16 @@ syn keyword htmlArg contained usemap ismap valign value vlink vspace width wrap
 syn match   htmlArg contained "\<\(http-equiv\|href\|title\)="me=e-1
 
 " aria attributes
-syn match htmlArg contained "\<\(aria-activedescendant\|aria-atomic\)\>"
-syn match htmlArg contained "\<\(aria-autocomplete\|aria-busy\|aria-checked\)\>"
-syn match htmlArg contained "\<\(aria-colcount\|aria-colindex\|aria-colspan\)\>"
-syn match htmlArg contained "\<\(aria-controls\|aria-current\)\>"
-syn match htmlArg contained "\<\(aria-describedby\|aria-details\)\>"
-syn match htmlArg contained "\<\(aria-disabled\|aria-dropeffect\)\>"
-syn match htmlArg contained "\<\(aria-errormessage\|aria-expanded\)\>"
-syn match htmlArg contained "\<\(aria-flowto\|aria-grabbed\|aria-haspopup\)\>"
-syn match htmlArg contained "\<\(aria-hidden\|aria-invalid\)\>"
-syn match htmlArg contained "\<\(aria-keyshortcuts\|aria-label\)\>"
-syn match htmlArg contained "\<\(aria-labelledby\|aria-level\|aria-live\)\>"
-syn match htmlArg contained "\<\(aria-modal\|aria-multiline\)\>"
-syn match htmlArg contained "\<\(aria-multiselectable\|aria-orientation\)\>"
-syn match htmlArg contained "\<\(aria-owns\|aria-placeholder\|aria-posinset\)\>"
-syn match htmlArg contained "\<\(aria-pressed\|aria-readonly\|aria-relevant\)\>"
-syn match htmlArg contained "\<\(aria-required\|aria-roledescription\)\>"
-syn match htmlArg contained "\<\(aria-rowcount\|aria-rowindex\|aria-rowspan\)\>"
-syn match htmlArg contained "\<\(aria-selected\|aria-setsize\|aria-sort\)\>"
-syn match htmlArg contained "\<\(aria-valuemax\|aria-valuemin\)\>"
-syn match htmlArg contained "\<\(aria-valuenow\|aria-valuetext\)\>"
+exe 'syn match htmlArg contained "\<aria-\%(' . join([
+    \ 'activedescendant', 'atomic', 'autocomplete', 'busy', 'checked', 'colcount',
+    \ 'colindex', 'colspan', 'controls', 'current', 'describedby', 'details',
+    \ 'disabled', 'dropeffect', 'errormessage', 'expanded', 'flowto', 'grabbed',
+    \ 'haspopup', 'hidden', 'invalid', 'keyshortcuts', 'label', 'labelledby', 'level',
+    \ 'live', 'modal', 'multiline', 'multiselectable', 'orientation', 'owns',
+    \ 'placeholder', 'posinset', 'pressed', 'readonly', 'relevant', 'required',
+    \ 'roledescription', 'rowcount', 'rowindex', 'rowspan', 'selected', 'setsize',
+    \ 'sort', 'valuemax', 'valuemin', 'valuenow', 'valuetext'
+    \ ], '\|') . '\)\>"'
 syn keyword htmlArg contained role
 
 " Netscape extensions
@@ -143,25 +134,19 @@ syn match htmlSpecialChar "&#\=[0-9A-Za-z]\{1,8};"
 
 " Comments (the real ones or the old netscape ones)
 if exists("html_wrong_comments")
-  syn region htmlComment                start=+<!--+    end=+--\s*>+ contains=@Spell
+  syn region htmlComment        start=+<!--+    end=+--\s*>+    contains=@Spell
 else
-  " The HTML 5.2 syntax 8.2.4.41-42: bogus comment is parser error; browser skips until next &gt;
-  " Note: must stand first to get lesser :syn-priority
-  syn region htmlComment                start=+<!+      end=+>+     contains=htmlCommentError
-  " Normal comment opening <!-- ...>
-  syn region htmlComment                start=+<!--+    end=+>+     contains=htmlCommentPart,@Spell
-  " Idem 8.2.4.43-44: <!--> and <!---> are parser errors; browser treats as comments
-  syn match htmlComment "<!---\?>" contains=htmlCommentError
-  " Idem 8.2.4.51: any number of consecutive dashes within comment is okay; --> closes comment
-  " Idem 8.2.4.52: closing comment by dash-dash-bang (--!>) is error ignored by parser(!); closes comment
-  syn region htmlCommentPart  contained start=+--+      end=+--!\?>+me=e-1  contains=htmlCommentNested,@htmlPreProc,@Spell
-  " Idem 8.2.4.49: opening nested comment <!-- is parser error, ignored by browser, except <!--> is all right
-  syn match htmlCommentNested contained "<!--[^>]"me=e-1
-  syn match htmlCommentNested contained "<!--->"me=e-3
-  syn match htmlCommentNested contained "<!---\?!>"me=e-4
-  syn match htmlCommentError contained "[^><!]"
+  " The HTML 5.2 syntax 8.2.4.41: bogus comment is parser error; browser skips until next &gt
+  syn region htmlComment        start=+<!+      end=+>+         contains=htmlCommentError keepend
+  " Idem 8.2.4.42,51: Comment starts with <!-- and ends with -->
+  " Idem 8.2.4.43,44: Except <!--> and <!---> are parser errors
+  " Idem 8.2.4.52: dash-dash-bang (--!>) is error ignored by parser, also closes comment
+  syn region htmlComment matchgroup=htmlComment start=+<!--\%(-\?>\)\@!+        end=+--!\?>+    contains=htmlCommentNested,@htmlPreProc,@Spell keepend
+  " Idem 8.2.4.49: nested comment is parser error, except <!--> is all right
+  syn match htmlCommentNested contained "<!-->\@!"
+  syn match htmlCommentError  contained "[^><!]"
 endif
-syn region htmlComment                  start=+<!DOCTYPE+ keepend end=+>+
+syn region htmlComment  start=+<!DOCTYPE+       end=+>+ keepend
 
 " server-parsed commands
 syn region htmlPreProc start=+<!--#+ end=+-->+ contains=htmlPreStmt,htmlPreError,htmlPreAttr
@@ -282,7 +267,7 @@ hi def link htmlEndTag                  Identifier
 hi def link htmlArg                     Type
 hi def link htmlTagName                 htmlStatement
 hi def link htmlSpecialTagName          Exception
-hi def link htmlValue                     String
+hi def link htmlValue                   String
 hi def link htmlSpecialChar             Special
 
 if !exists("html_no_rendering")
@@ -326,14 +311,10 @@ hi def link htmlPreProc            PreProc
 hi def link htmlPreAttr            String
 hi def link htmlPreProcAttrName    PreProc
 hi def link htmlPreProcAttrError   Error
-hi def link htmlSpecial            Special
-hi def link htmlSpecialChar        Special
 hi def link htmlString             String
 hi def link htmlStatement          Statement
 hi def link htmlComment            Comment
-hi def link htmlCommentPart        Comment
-hi def link htmlValue              String
-hi def link htmlCommentNested      htmlCommentError
+hi def link htmlCommentNested      htmlError
 hi def link htmlCommentError       htmlError
 hi def link htmlTagError           htmlError
 hi def link htmlEvent              javaScript
diff --git a/syntax/javascript.vim b/syntax/javascript.vim
index 615862dc..41543024 100644
--- a/syntax/javascript.vim
+++ b/syntax/javascript.vim
@@ -58,7 +58,7 @@ syntax match   jsModuleComma        contained /,/ skipwhite skipempty nextgroup=
 syntax region  jsString           start=+\z(["']\)+  skip=+\\\%(\z1\|$\)+  end=+\z1+ end=+$+  contains=jsSpecial extend
 syntax region  jsTemplateString   start=+`+  skip=+\\`+  end=+`+     contains=jsTemplateExpression,jsSpecial extend
 syntax match   jsTaggedTemplate   /\<\K\k*\ze`/ nextgroup=jsTemplateString
-syntax match   jsNumber           /\c\<\%(\d\+\%(e[+-]\=\d\+\)\=\|0b[01]\+\|0o\o\+\|0x\x\+\)\>/
+syntax match   jsNumber           /\c\<\%(\d\+\%(e[+-]\=\d\+\)\=\|0b[01]\+\|0o\o\+\|0x\%(\x\|_\)\+\)\>/
 syntax keyword jsNumber           Infinity
 syntax match   jsFloat            /\c\<\%(\d\+\.\d\+\|\d\+\.\|\.\d\+\)\%(e[+-]\=\d\+\)\=\>/
 
diff --git a/syntax/julia.vim b/syntax/julia.vim
index 1a08f62d..2849439b 100644
--- a/syntax/julia.vim
+++ b/syntax/julia.vim
@@ -68,7 +68,7 @@ let s:idregex = '\%([^' . s:nonidS_chars . '0-9!' . s:uniop_chars . s:binop_char
 
 let s:operators = '\%(' . '\.\%([-+*/^÷%|&!]\|//\|\\\|<<\|>>>\?\)\?=' .
       \           '\|'  . '[:$<>]=\|||\|&&\||>\|<|\|<:\|>:\|::\|<<\|>>>\?\|//\|[-=]>\|\.\{3\}' .
-      \           '\|'  . '[' . s:uniop_chars . '!$]' .
+      \           '\|'  . '\.\?[' . s:uniop_chars . '!]' .
       \           '\|'  . '\.\?[' . s:binop_chars . s:binop_chars_extra . ']' .
       \           '\)'
 
@@ -132,12 +132,11 @@ syntax region  juliaCurBraBlock		matchgroup=juliaParDelim start="{" end="}" cont
 
 exec 'syntax match   juliaType		contained "' . s:idregex . '\%(\.' . s:idregex . '\)*"'
 
-exec 'syntax region  juliaFunctionCallR	transparent start="' . s:idregex . '\%(\.' . s:idregex . '\)*\s*(" end=")\@'.s:d(1).'<=" contains=juliaFunctionCall,juliaParBlock'
+exec 'syntax region  juliaFunctionCallR	transparent start="' . s:idregex . '\%(\.' . s:idregex . '\)*\.\?(" end=")\@'.s:d(1).'<=" contains=juliaFunctionCall,juliaParBlock'
 exec 'syntax match   juliaFunctionCall	contained "\%(' . s:idregex . '\.\)*\zs' . s:idregex . '"'
 
 " note: we would in principle add a "s:nodot" before function/macro/struct/... but it shouldn't come up in valid code
-exec 'syntax match   juliaFunctionDef	contained transparent "\%(\<\%(function\|macro\)\s\+\)\@'.s:d(20).'<=' . s:idregex . '\%(\.' . s:idregex . '\)*\ze\s\+\%(end\>\|$\)" contains=juliaFunctionName'
-exec 'syntax region  juliaFunctionDefP	contained transparent start="\%(\<\%(function\|macro\)\s\+\)\@'.s:d(20).'<=' . s:idregex . '\%(\.' . s:idregex . '\)*\s*(" end=")\@'.s:d(1).'<=" contains=juliaFunctionName,juliaParBlock'
+exec 'syntax match   juliaFunctionDef	contained transparent "\%(\<\%(function\|macro\)\)\@'.s:d(8).'<=\s\+\zs' . s:idregex . '\%(\.' . s:idregex . '\)*\ze\s*\%((\|\send\>\|$\)" contains=juliaFunctionName'
 exec 'syntax match   juliaFunctionName	contained "\%(\<\%(function\|macro\)\s\+\)\@'.s:d(20).'<=\%(' . s:idregex . '\.\)*\zs' . s:idregex . '"'
 
 exec 'syntax match   juliaStructR	contained transparent "\%(\<\%(\%(mutable\s\+\)\?struct\|\%(abstract\|primitive\)\s\+type\)\s\+\)\@'.s:d(20).'<=\%(' . s:idregex . '\.\)*' . s:idregex . '\>\(\s*(\)\@!" contains=juliaType'
@@ -157,8 +156,8 @@ exec 'syntax region  juliaConditionalEBlock	matchgroup=juliaConditional transpar
 exec 'syntax region  juliaWhileBlock		matchgroup=juliaRepeat start="'.s:nodot.'\<while\>" end="'.s:nodot.'\<end\>" contains=@juliaExpressions fold'
 exec 'syntax region  juliaForBlock		matchgroup=juliaRepeat start="'.s:nodot.'\<for\>" end="'.s:nodot.'\<end\>" contains=@juliaExpressions,juliaOuter fold'
 exec 'syntax region  juliaBeginBlock		matchgroup=juliaBlKeyword start="'.s:nodot.'\<begin\>" end="'.s:nodot.'\<end\>" contains=@juliaExpressions fold'
-exec 'syntax region  juliaFunctionBlock		matchgroup=juliaBlKeyword start="'.s:nodot.'\<function\>" end="'.s:nodot.'\<end\>" contains=@juliaExpressions,juliaFunctionDef,juliaFunctionDefP fold'
-exec 'syntax region  juliaMacroBlock		matchgroup=juliaBlKeyword start="'.s:nodot.'\<macro\>" end="'.s:nodot.'\<end\>" contains=@juliaExpressions,juliaFunctionDef,juliaFunctionDefP fold'
+exec 'syntax region  juliaFunctionBlock		matchgroup=juliaBlKeyword start="'.s:nodot.'\<function\>" end="'.s:nodot.'\<end\>" contains=@juliaExpressions,juliaFunctionDef fold'
+exec 'syntax region  juliaMacroBlock		matchgroup=juliaBlKeyword start="'.s:nodot.'\<macro\>" end="'.s:nodot.'\<end\>" contains=@juliaExpressions,juliaFunctionDef fold'
 exec 'syntax region  juliaQuoteBlock		matchgroup=juliaBlKeyword start="'.s:nodot.'\<quote\>" end="'.s:nodot.'\<end\>" contains=@juliaExpressions fold'
 exec 'syntax region  juliaStructBlock		matchgroup=juliaBlKeyword start="'.s:nodot.'\<struct\>" end="'.s:nodot.'\<end\>" contains=@juliaExpressions,juliaStructR fold'
 exec 'syntax region  juliaMutableStructBlock	matchgroup=juliaBlKeyword start="'.s:nodot.'\<mutable\s\+struct\>" end="'.s:nodot.'\<end\>" contains=@juliaExpressions,juliaStructR fold'
@@ -214,7 +213,7 @@ syntax match   juliaConstIO		display "\<\%(std\%(out\|in\|err\)\|devnull\)\>"
 syntax match   juliaConstC		display "\<\%(C_NULL\)\>"
 syntax match   juliaConstGeneric	display "\<\%(nothing\|Main\|undef\|missing\)\>"
 
-exec 'syntax region  juliaParamTypeR	transparent start="' . s:idregex . '\%(\.' . s:idregex . '\)*\s*{" end="}\@'.s:d(1).'<=" contains=juliaType,@juliaExpressions'
+exec 'syntax region  juliaParamTypeR	transparent start="' . s:idregex . '{" end="}\@'.s:d(1).'<=" contains=juliaType,@juliaExpressions'
 
 syntax match   juliaPossibleMacro	transparent "@" contains=juliaMacroCall,juliaMacroCallP,juliaPrintfMacro,juliaDocMacro
 
@@ -383,7 +382,7 @@ syntax cluster juliaContinuationItems	contains=juliaContinuationComma,juliaConti
 exec 'syntax region  juliaContinuationComma	matchgroup=juliaComma contained start=",\ze'.s:eol.'" end="\n\+\ze." contains=@juliaCommentItems'
 exec 'syntax region  juliaContinuationColon	matchgroup=juliaColon contained start=":\ze'.s:eol.'" end="\n\+\ze." contains=@juliaCommentItems'
 exec 'syntax region  juliaContinuationNone	matchgroup=NONE contained start="\%(\<\%(import\|using\|export\)\>\|^\)\@'.s:d(6).'<=\ze'.s:eol.'" end="\n\+\ze." contains=@juliaCommentItems,juliaAsKeyword'
-exec 'syntax match   juliaMacroName		"@' . s:idregex . '\%(\.' . s:idregex . '\)*"'
+exec 'syntax match   juliaMacroName		contained "@' . s:idregex . '\%(\.' . s:idregex . '\)*"'
 
 " the following are disabled by default, but
 " can be enabled by entering e.g.
diff --git a/syntax/kotlin.vim b/syntax/kotlin.vim
index c3ad6884..9da75fa9 100644
--- a/syntax/kotlin.vim
+++ b/syntax/kotlin.vim
@@ -5,7 +5,7 @@ endif
 " Vim syntax file
 " Language: Kotlin
 " Maintainer: Alexander Udalov
-" Latest Revision: 17 February 2021
+" Latest Revision: 11 April 2021
 
 if exists('b:current_syntax')
     finish
@@ -61,7 +61,7 @@ syn match ktModifier "\v<(data|value)>\ze\@=.*<class>"
 syn match ktModifier "\v<(tailrec|operator|infix|suspend)>\ze\@=.*<fun>"
 syn match ktModifier "\v<(const)>\ze\@=.*<val>"
 syn match ktModifier "\v<(lateinit)>\ze\@=.*<var>"
-syn match ktModifier "\v<(internal|private|protected|public)>\ze\@=.*<(class|fun|val|var|typealias)>"
+syn match ktModifier "\v<(internal|private|protected|public)>\ze\@=.*<(class|object|fun|val|var|typealias|constructor)>"
 
 syn match ktOperator "\v\?:|::|\<\=? | \>\=?|[!=]\=\=?|<as>\??|[-!%&*+/|]"
 
diff --git a/syntax/meson.vim b/syntax/meson.vim
index 28eab3ea..6efb3c28 100644
--- a/syntax/meson.vim
+++ b/syntax/meson.vim
@@ -123,6 +123,7 @@ syn keyword mesonBuiltin
   \ test
   \ vcs_tag
   \ warning
+  \ range
 
 if exists("meson_space_error_highlight")
   " trailing whitespace
diff --git a/syntax/nroff.vim b/syntax/nroff.vim
index c848ecf9..b085a5db 100644
--- a/syntax/nroff.vim
+++ b/syntax/nroff.vim
@@ -4,17 +4,10 @@ endif
 
 " VIM syntax file
 " Language:	nroff/groff
-" Maintainer:	Pedro Alejandro López-Valencia <palopezv@gmail.com>
-" URL:		http://vorbote.wordpress.com/
-" Last Change:	2012 Feb 2
-"
-" {{{1 Acknowledgements
-"
-" ACKNOWLEDGEMENTS:
-"
-" My thanks to Jérôme Plût <Jerome.Plut@ens.fr>, who was the
-" creator and maintainer of this syntax file for several years.
-" May I be as good at it as he has been.
+" Maintainer:	John Marshall <jmarshall@hey.com>
+" Previous Maintainer:	Pedro Alejandro López-Valencia <palopezv@gmail.com>
+" Previous Maintainer:	Jérôme Plût <Jerome.Plut@ens.fr>
+" Last Change:	2021 Mar 28
 "
 " {{{1 Todo
 "
@@ -35,6 +28,13 @@ endif
 let s:cpo_save = &cpo
 set cpo&vim
 
+if exists("nroff_is_groff")
+	let b:nroff_is_groff = 1
+endif
+
+syn spell toplevel
+syn case match
+
 "
 " {{{1 plugin settings...
 "
@@ -52,7 +52,7 @@ endif
 "
 setlocal paragraphs+=XP
 "
-" {{{2 Activate navigation to preporcessor sections.
+" {{{2 Activate navigation to preprocessor sections.
 "
 if exists("b:preprocs_as_sections")
 	setlocal sections=EQTSPS[\ G1GS
@@ -173,9 +173,9 @@ endif
 " <jp />
 
 syn region nroffEquation start=/^\.\s*EQ\>/ end=/^\.\s*EN\>/
-syn region nroffTable start=/^\.\s*TS\>/ end=/^\.\s*TE\>/
+syn region nroffTable start=/^\.\s*TS\>/ end=/^\.\s*TE\>/ contains=@Spell
 syn region nroffPicture start=/^\.\s*PS\>/ end=/^\.\s*PE\>/
-syn region nroffRefer start=/^\.\s*\[\>/ end=/^\.\s*\]\>/
+syn region nroffRefer start=/^\.\s*\[\>/ end=/^\.\s*\]\>/ contains=@Spell
 syn region nroffGrap start=/^\.\s*G1\>/ end=/^\.\s*G2\>/
 syn region nroffGremlin start=/^\.\s*GS\>/ end=/^\.\s*GE|GF\>/
 
@@ -183,11 +183,11 @@ syn region nroffGremlin start=/^\.\s*GS\>/ end=/^\.\s*GE|GF\>/
 " ------------------------------------------------------------
 
 syn region nroffIgnore start=/^[.']\s*ig/ end=/^['.]\s*\./
-syn match nroffComment /\(^[.']\s*\)\=\\".*/ contains=nroffTodo
-syn match nroffComment /^'''.*/  contains=nroffTodo
+syn match nroffComment /\(^[.']\s*\)\=\\".*/ contains=nroffTodo,@Spell
+syn match nroffComment /^'''.*/  contains=nroffTodo,@Spell
 
 if exists("b:nroff_is_groff")
-	syn match nroffComment "\\#.*$" contains=nroffTodo
+	syn match nroffComment "\\#.*$" contains=nroffTodo,@Spell
 endif
 
 syn keyword nroffTodo TODO XXX FIXME contained
@@ -202,7 +202,7 @@ syn keyword nroffTodo TODO XXX FIXME contained
 "
 
 hi def link nroffEscChar nroffSpecialChar
-hi def link nroffEscCharAr nroffSpecialChar
+hi def link nroffEscCharArg nroffSpecialChar
 hi def link nroffSpecialChar SpecialChar
 hi def link nroffSpace Delimiter
 
@@ -215,7 +215,7 @@ hi def link nroffEscPar nroffEscape
 hi def link nroffEscRegPar nroffEscape
 hi def link nroffEscArg nroffEscape
 hi def link nroffSize nroffEscape
-hi def link nroffEscape Preproc
+hi def link nroffEscape PreProc
 
 hi def link nroffIgnore Comment
 hi def link nroffComment Comment
diff --git a/syntax/plantuml.vim b/syntax/plantuml.vim
index c562bb82..9b235afb 100644
--- a/syntax/plantuml.vim
+++ b/syntax/plantuml.vim
@@ -99,7 +99,7 @@ syntax match plantumlNoteMultiLineStart /\%(^\s*[rh]\?\%(note\|legend\)\)\@<=\s\
 " Class
 syntax region plantumlClass
       \ start=/\%(\%(class\|interface\|object\)\s[^{]\+\)\@<=\zs{/
-      \ end=/^\s*}/ 
+      \ end=/^\s*}/
       \ contains=plantumlClassArrows,
       \          plantumlClassKeyword,
       \          @plantumlClassOp,
@@ -128,7 +128,7 @@ syntax match plantumlTag /<\/\?[bi]>/
 syntax region plantumlTag start=/<\/\?\%(back\|color\|del\|font\|img\|s\|size\|strike\|u\|w\)/ end=/>/
 
 " Labels with a colon
-syntax match plantumlColonLine /\S\@<=\s*\zs:.\+$/ contains=plantumlSpecialString
+syntax match plantumlColonLine /\S\@<=\s*\zs : .\+$/ contains=plantumlSpecialString
 
 " Stereotypes
 syntax match plantumlStereotype /<<[^-.]\+>>/ contains=plantumlSpecialString
diff --git a/syntax/requirements.vim b/syntax/requirements.vim
index 48331f48..3835c07f 100644
--- a/syntax/requirements.vim
+++ b/syntax/requirements.vim
@@ -3,7 +3,7 @@ if polyglot#init#is_disabled(expand('<sfile>:p'), 'requirements', 'syntax/requir
 endif
 
 " the Requirements File Format syntax support for Vim
-" Version: 1.5.3
+" Version: 1.6.0
 " Author:  raimon <raimon49@hotmail.com>
 " License: MIT LICENSE
 " The MIT License (MIT)
diff --git a/syntax/sshconfig.vim b/syntax/sshconfig.vim
index 2c7bc896..1761e432 100644
--- a/syntax/sshconfig.vim
+++ b/syntax/sshconfig.vim
@@ -5,14 +5,15 @@ endif
 " Vim syntax file
 " Language:	OpenSSH client configuration file (ssh_config)
 " Author:	David Necas (Yeti)
-" Maintainer:	Dominik Fischer <d dot f dot fischer at web dot de>
+" Maintainer:	Jakub Jelen <jakuje at gmail dot com>
+" Previous Maintainer:	Dominik Fischer <d dot f dot fischer at web dot de>
 " Contributor:  Leonard Ehrenfried <leonard.ehrenfried@web.de>
 " Contributor:  Karsten Hopp <karsten@redhat.com>
 " Contributor:  Dean, Adam Kenneth <adam.ken.dean@hpe.com>
-" Last Change:	2020 Feb 12
+" Last Change:	2021 Mar 29
 "		Added RemoteCommand from pull request #4809
 "		Included additional keywords from Martin.
-" SSH Version:	7.4p1
+" SSH Version:	8.5p1
 "
 
 " Setup
@@ -178,6 +179,7 @@ syn keyword sshconfigKeyword HostKeyAlgorithms
 syn keyword sshconfigKeyword HostKeyAlias
 syn keyword sshconfigKeyword HostName
 syn keyword sshconfigKeyword HostbasedAuthentication
+syn keyword sshconfigKeyword HostbasedAcceptedAlgorithms
 syn keyword sshconfigKeyword HostbasedKeyTypes
 syn keyword sshconfigKeyword IPQoS
 syn keyword sshconfigKeyword IdentitiesOnly
@@ -189,9 +191,11 @@ syn keyword sshconfigKeyword IPQoS
 syn keyword sshconfigKeyword KbdInteractiveAuthentication
 syn keyword sshconfigKeyword KbdInteractiveDevices
 syn keyword sshconfigKeyword KexAlgorithms
+syn keyword sshconfigKeyword KnownHostsCommand
 syn keyword sshconfigKeyword LocalCommand
 syn keyword sshconfigKeyword LocalForward
 syn keyword sshconfigKeyword LogLevel
+syn keyword sshconfigKeyword LogVerbose
 syn keyword sshconfigKeyword MACs
 syn keyword sshconfigKeyword Match
 syn keyword sshconfigKeyword NoHostAuthenticationForLocalhost
@@ -199,11 +203,13 @@ syn keyword sshconfigKeyword NumberOfPasswordPrompts
 syn keyword sshconfigKeyword PKCS11Provider
 syn keyword sshconfigKeyword PasswordAuthentication
 syn keyword sshconfigKeyword PermitLocalCommand
+syn keyword sshconfigKeyword PermitRemoteOpen
 syn keyword sshconfigKeyword Port
 syn keyword sshconfigKeyword PreferredAuthentications
 syn keyword sshconfigKeyword ProxyCommand
 syn keyword sshconfigKeyword ProxyJump
 syn keyword sshconfigKeyword ProxyUseFDPass
+syn keyword sshconfigKeyword PubkeyAcceptedAlgorithms
 syn keyword sshconfigKeyword PubkeyAcceptedKeyTypes
 syn keyword sshconfigKeyword PubkeyAuthentication
 syn keyword sshconfigKeyword RekeyLimit
diff --git a/syntax/sshdconfig.vim b/syntax/sshdconfig.vim
index ffd50dae..9c9f4af0 100644
--- a/syntax/sshdconfig.vim
+++ b/syntax/sshdconfig.vim
@@ -11,8 +11,8 @@ endif
 " Contributor:  Leonard Ehrenfried <leonard.ehrenfried@web.de>	
 " Contributor:  Karsten Hopp <karsten@redhat.com>
 " Originally:	2009-07-09
-" Last Change:	2020-10-20
-" SSH Version:	8.4p1
+" Last Change:	2021-03-29
+" SSH Version:	8.5p1
 "
 
 " Setup
@@ -199,6 +199,7 @@ syn keyword sshdconfigKeyword HostCertificate
 syn keyword sshdconfigKeyword HostKey
 syn keyword sshdconfigKeyword HostKeyAgent
 syn keyword sshdconfigKeyword HostKeyAlgorithms
+syn keyword sshdconfigKeyword HostbasedAcceptedAlgorithms
 syn keyword sshdconfigKeyword HostbasedAcceptedKeyTypes
 syn keyword sshdconfigKeyword HostbasedAuthentication
 syn keyword sshdconfigKeyword HostbasedUsesNameFromPacketOnly
@@ -217,6 +218,7 @@ syn keyword sshdconfigKeyword KexAlgorithms
 syn keyword sshdconfigKeyword KeyRegenerationInterval
 syn keyword sshdconfigKeyword ListenAddress
 syn keyword sshdconfigKeyword LogLevel
+syn keyword sshdconfigKeyword LogVerbose
 syn keyword sshdconfigKeyword LoginGraceTime
 syn keyword sshdconfigKeyword MACs
 syn keyword sshdconfigKeyword Match
@@ -224,6 +226,8 @@ syn keyword sshdconfigKeyword MaxAuthTries
 syn keyword sshdconfigKeyword MaxSessions
 syn keyword sshdconfigKeyword MaxStartups
 syn keyword sshdconfigKeyword PasswordAuthentication
+syn keyword sshdconfigKeyword PerSourceMaxStartups
+syn keyword sshdconfigKeyword PerSourceNetBlockSize
 syn keyword sshdconfigKeyword PermitBlacklistedKeys
 syn keyword sshdconfigKeyword PermitEmptyPasswords
 syn keyword sshdconfigKeyword PermitListen
@@ -238,6 +242,7 @@ syn keyword sshdconfigKeyword Port
 syn keyword sshdconfigKeyword PrintLastLog
 syn keyword sshdconfigKeyword PrintMotd
 syn keyword sshdconfigKeyword Protocol
+syn keyword sshdconfigKeyword PubkeyAcceptedAlgorithms
 syn keyword sshdconfigKeyword PubkeyAcceptedKeyTypes
 syn keyword sshdconfigKeyword PubkeyAuthentication
 syn keyword sshdconfigKeyword PubkeyAuthOptions
diff --git a/syntax/sudoers.vim b/syntax/sudoers.vim
index 1d65f011..759976c2 100644
--- a/syntax/sudoers.vim
+++ b/syntax/sudoers.vim
@@ -4,8 +4,9 @@ endif
 
 " Vim syntax file
 " Language:             sudoers(5) configuration files
+" Maintainer:           Eisuke Kawashima ( e.kawaschima+vim AT gmail.com )
 " Previous Maintainer:  Nikolai Weibull <now@bitwi.se>
-" Latest Revision:      2018-08-18
+" Latest Revision:      2021 Mar 15
 " Recent Changes:	Support for #include and #includedir.
 " 			Added many new options (Samuel D. Leslie)
 
@@ -30,7 +31,7 @@ syn cluster sudoersCmndSpecList       contains=sudoersUserRunasBegin,sudoersPASS
 syn keyword sudoersTodo               contained TODO FIXME XXX NOTE
 
 syn region  sudoersComment            display oneline start='#' end='$' contains=sudoersTodo
-syn region  sudoersInclude            display oneline start='#\(include\|includedir\)' end='$'
+syn region  sudoersInclude            display oneline start='[#@]\%(include\|includedir\)\>' end='$'
 
 syn keyword sudoersAlias              User_Alias Runas_Alias nextgroup=sudoersUserAlias skipwhite skipnl
 syn keyword sudoersAlias              Host_Alias nextgroup=sudoersHostAlias skipwhite skipnl
@@ -205,7 +206,7 @@ syn keyword sudoersBooleanParameter contained skipwhite skipnl
                                   \ shell_noargs
                                   \ stay_setuid
                                   \ sudoedit_checkdir
-                                  \ sudoedit_fellow
+                                  \ sudoedit_follow
                                   \ syslog_pid
                                   \ targetpw
                                   \ tty_tickets