Update

autoload/vimtex/include.vim

@@ -63,6 +63,8 @@ function! s:input(fname, type) abort " {{{1
   if l:lnum == 0 | return a:fname | endif
 
   let l:cmd = vimtex#cmd#get_at(l:lnum, l:cnum)
+  if empty(l:cmd) | return a:fname | endif
+
   let l:file = join(map(
         \   get(l:cmd, 'args', [{}]),
         \   "get(v:val, 'text', '')"),

autoload/vimtex/re.vim

@@ -20,7 +20,7 @@ let g:vimtex#re#tex_input_import =
 let g:vimtex#re#tex_input_package =
       \ '\v\\%(usepackage|RequirePackage)%(\s*\[[^]]*\])?\s*\{\zs[^}]*\ze\}'
 
-let g:vimtex#re#tex_input = '\v^\s*%(' . join([
+let g:vimtex#re#tex_input = '\v^\s*\zs%(' . join([
       \   g:vimtex#re#tex_input_latex,
       \   g:vimtex#re#tex_input_import,
       \ ], '|') . ')'

autoload/vimtex/syntax/load.vim

@@ -7,6 +7,8 @@ if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'latex') == -1
 "
 
 function! vimtex#syntax#load#general() abort " {{{1
+  if !exists('b:vimtex_syntax') | return | endif
+
   " I don't see why we can't match Math zones in the MatchNMGroup
   if !exists('g:tex_no_math')
     syntax cluster texMatchNMGroup add=@texMathZones
@@ -64,6 +66,8 @@ endfunction
 
 " }}}1
 function! vimtex#syntax#load#packages() abort " {{{1
+  if !exists('b:vimtex_syntax') | return | endif
+
   try
     call vimtex#syntax#p#{b:vimtex.documentclass}#load()
   catch /E117:/

autoload/vimtex/view/common.vim

@@ -153,9 +153,10 @@ function! s:xwin_template.xwin_exists() dict abort " {{{1
   " If xwin_id is unset, check if matching viewer windows exist
   "
   if self.xwin_id == 0
-    if has_key(self, 'get_pid')
+    let l:pid = has_key(self, 'get_pid') ? self.get_pid() : 0
+    if l:pid > 0
       let cmd = 'xdotool search'
-            \ . ' --all --pid ' . self.get_pid()
+            \ . ' --all --pid ' . l:pid
             \ . ' --name ' . fnamemodify(self.out(), ':t')
       let self.xwin_id = get(split(system(cmd), '\n'), 0)
     else

autoload/vimtex/view/zathura.vim

@@ -90,21 +90,20 @@ function! s:zathura.compiler_callback(status) dict abort " {{{1
 
   if !filereadable(self.out()) | return | endif
 
-  if g:vimtex_view_automatic
+  if g:vimtex_view_automatic && !has_key(self, 'started_through_callback')
     "
     " Search for existing window created by latexmk
-    "   It may be necessary to wait some time before it is opened and
+    " Note: It may be necessary to wait some time before it is opened and
-    "   recognized. Sometimes it is very quick, other times it may take
+    "       recognized. Sometimes it is very quick, other times it may take
-    "   a second. This way, we don't block longer than necessary.
+    "       a second. This way, we don't block longer than necessary.
     "
-    if !has_key(self, 'started_through_callback')
+    for l:dummy in range(30)
-      for l:dummy in range(30)
+      let l:xwin_exists = self.xwin_exists()
-        sleep 50m
+      if l:xwin_exists | break | endif
-        if self.xwin_exists() | break | endif
+      sleep 50m
-      endfor
+    endfor
-    endif
 
-    if !self.xwin_exists() && !has_key(self, 'started_through_callback')
+    if ! l:xwin_exists
       call self.start(self.out())
       let self.started_through_callback = 1
     endif

ftdetect/polyglot.vim

@@ -1639,6 +1639,7 @@ if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'zig') == -1
   augroup filetypedetect
   " zig, from zig.vim in ziglang/zig.vim
 au BufRead,BufNewFile *.zig set filetype=zig
+au BufRead,BufNewFile *.zir set filetype=zir
   augroup end
 endif
 

ftplugin/zig.vim

@@ -12,6 +12,7 @@ setlocal tabstop=4
 setlocal shiftwidth=4
 
 setlocal suffixesadd=.zig
+setlocal suffixesadd=.zir
 setlocal commentstring=//\ %s
 setlocal makeprg=zig\ build
 

syntax/javascript.vim

@@ -53,8 +53,8 @@ syntax keyword jsFrom               contained from skipwhite skipempty nextgroup
 syntax match   jsModuleComma        contained /,/ skipwhite skipempty nextgroup=jsModuleKeyword,jsModuleAsterisk,jsModuleGroup,jsFlowTypeKeyword
 
 " Strings, Templates, Numbers
-syntax region  jsString           start=+\z(["']\)+  skip=+\\\%(\z1\|$\)+  end=+\z1+ end=+$+  contains=jsSpecial,@Spell extend
+syntax region  jsString           start=+\z(["']\)+  skip=+\\\%(\z1\|$\)+  end=+\z1+ end=+$+  contains=jsSpecial extend
-syntax region  jsTemplateString   start=+`+  skip=+\\`+  end=+`+     contains=jsTemplateExpression,jsSpecial,@Spell 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 keyword jsNumber           Infinity
@@ -76,14 +76,14 @@ syntax cluster jsRegexpSpecial    contains=jsSpecial,jsRegexpBoundary,jsRegexpBa
 " Objects
 syntax match   jsObjectShorthandProp contained /\<\k*\ze\s*/ skipwhite skipempty nextgroup=jsObjectSeparator
 syntax match   jsObjectKey         contained /\<\k*\ze\s*:/ contains=jsFunctionKey skipwhite skipempty nextgroup=jsObjectValue
-syntax region  jsObjectKeyString   contained start=+\z(["']\)+  skip=+\\\%(\z1\|$\)+  end=+\z1\|$+  contains=jsSpecial,@Spell skipwhite skipempty nextgroup=jsObjectValue
+syntax region  jsObjectKeyString   contained start=+\z(["']\)+  skip=+\\\%(\z1\|$\)+  end=+\z1\|$+  contains=jsSpecial skipwhite skipempty nextgroup=jsObjectValue
 syntax region  jsObjectKeyComputed contained matchgroup=jsBrackets start=/\[/ end=/]/ contains=@jsExpression skipwhite skipempty nextgroup=jsObjectValue,jsFuncArgs extend
 syntax match   jsObjectSeparator   contained /,/
 syntax region  jsObjectValue       contained matchgroup=jsObjectColon start=/:/ end=/[,}]\@=/ contains=@jsExpression extend
 syntax match   jsObjectFuncName    contained /\<\K\k*\ze\_s*(/ skipwhite skipempty nextgroup=jsFuncArgs
 syntax match   jsFunctionKey       contained /\<\K\k*\ze\s*:\s*function\>/
 syntax match   jsObjectMethodType  contained /\<[gs]et\ze\s\+\K\k*/ skipwhite skipempty nextgroup=jsObjectFuncName
-syntax region  jsObjectStringKey   contained start=+\z(["']\)+  skip=+\\\%(\z1\|$\)+  end=+\z1\|$+  contains=jsSpecial,@Spell extend skipwhite skipempty nextgroup=jsFuncArgs,jsObjectValue
+syntax region  jsObjectStringKey   contained start=+\z(["']\)+  skip=+\\\%(\z1\|$\)+  end=+\z1\|$+  contains=jsSpecial extend skipwhite skipempty nextgroup=jsFuncArgs,jsObjectValue
 
 exe 'syntax keyword jsNull      null             '.(exists('g:javascript_conceal_null')      ? 'conceal cchar='.g:javascript_conceal_null       : '')
 exe 'syntax keyword jsReturn    return contained '.(exists('g:javascript_conceal_return')    ? 'conceal cchar='.g:javascript_conceal_return     : '').' skipwhite nextgroup=@jsExpression'
@@ -189,7 +189,7 @@ syntax region  jsClassDefinition                  start=/\<class\>/ end=/\(\<ext
 syntax match   jsClassProperty          contained /\<\K\k*\ze\s*[=;]/ skipwhite skipempty nextgroup=jsClassValue,jsFlowClassDef
 syntax region  jsClassValue             contained start=/=/ end=/\_[;}]\@=/ contains=@jsExpression
 syntax region  jsClassPropertyComputed  contained matchgroup=jsBrackets start=/\[/ end=/]/ contains=@jsExpression skipwhite skipempty nextgroup=jsFuncArgs,jsClassValue extend
-syntax region  jsClassStringKey         contained start=+\z(["']\)+  skip=+\\\%(\z1\|$\)+  end=+\z1\|$+  contains=jsSpecial,@Spell extend skipwhite skipempty nextgroup=jsFuncArgs
+syntax region  jsClassStringKey         contained start=+\z(["']\)+  skip=+\\\%(\z1\|$\)+  end=+\z1\|$+  contains=jsSpecial extend skipwhite skipempty nextgroup=jsFuncArgs
 
 " Destructuring
 syntax match   jsDestructuringPropertyValue     contained /\k\+/

syntax/zig.vim

@@ -46,11 +46,11 @@ syn match zigBuiltinFn "\v\@(truncate|typeInfo|typeName|TypeOf|atomicRmw|bytesTo
 syn match zigBuiltinFn "\v\@(intToError|errorToInt|intToEnum|enumToInt|setAlignStack|frame|Frame|frameSize|bitReverse|Vector)>"
 syn match zigBuiltinFn "\v\@(sin|cos|exp|exp2|log|log2|log10|fabs|floor|ceil|trunc|round)>"
 
-syn match zigDecNumber display "\<[0-9]\+\%(.[0-9]\+\)\=\%([eE][+-]\?[0-9]\+\)\="
+"                                     12_34  (. but not ..)? (12_34)?     (exponent  12_34)?
-syn match zigHexNumber display "\<0x[a-fA-F0-9]\+\%([a-fA-F0-9]\+\%([pP][+-]\?[0-9]\+\)\?\)\="
+syn match zigDecNumber display   "\v<\d%(_?\d)*%(\.\.@!)?%(\d%(_?\d)*)?%([eE][+-]?\d%(_?\d)*)?"
-syn match zigOctNumber display "\<0o[0-7]\+"
+syn match zigHexNumber display "\v<0x\x%(_?\x)*%(\.\.@!)?%(\x%(_?\x)*)?%([pP][+-]?\d%(_?\d)*)?"
-syn match zigBinNumber display "\<0b[01]\+\%(.[01]\+\%([eE][+-]\?[0-9]\+\)\?\)\="
+syn match zigOctNumber display "\v<0o\o%(_?\o)*"
-
+syn match zigBinNumber display "\v<0b[01]%(_?[01])*"
 
 syn match zigCharacterInvalid display contained /b\?'\zs[\n\r\t']\ze'/
 syn match zigCharacterInvalidUnicode display contained /b'\zs[^[:cntrl:][:graph:][:alnum:][:space:]]\ze'/

syntax/zir.vim

@@ -0,0 +1,54 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'zig') == -1
+
+" Vim syntax file
+" Language: Zir
+" Maintainer: Andrew Kelley
+" Latest Revision: 00 April 2020
+
+if exists("b:current_syntax")
+  finish
+endif
+let b:current_syntax = "zir"
+
+syn region zirCommentLine start=";" end="$" contains=zirTodo,@Spell
+
+syn region zirBlock start="{" end="}" transparent fold
+
+syn keyword zirKeyword primitive fntype int str as ptrtoint fieldptr deref asm unreachable export
+
+syn keyword zirTodo contained TODO
+
+syn region zirString start=+c\?"+ skip=+\\\\\|\\"+ end=+"+ oneline contains=zirEscape,zirEscapeUnicode,zirEscapeError,@Spell
+
+syn match zirEscapeError   display contained /\\./
+syn match zirEscape        display contained /\\\([nrt\\'"]\|x\x\{2}\)/
+syn match zirEscapeUnicode display contained /\\\(u\x\{4}\|U\x\{6}\)/
+
+syn match zirDecNumber display "\<[0-9]\+\%(.[0-9]\+\)\=\%([eE][+-]\?[0-9]\+\)\="
+syn match zirHexNumber display "\<0x[a-fA-F0-9]\+\%([a-fA-F0-9]\+\%([pP][+-]\?[0-9]\+\)\?\)\="
+syn match zirOctNumber display "\<0o[0-7]\+"
+syn match zirBinNumber display "\<0b[01]\+\%(.[01]\+\%([eE][+-]\?[0-9]\+\)\?\)\="
+
+syn match zirGlobal display "[^a-zA-Z0-9_]\?\zs@[a-zA-Z0-9_]\+"
+syn match zirLocal  display "[^a-zA-Z0-9_]\?\zs%[a-zA-Z0-9_]\+"
+
+hi def link zirCommentLine Comment
+hi def link zirTodo Todo
+
+hi def link zirKeyword Keyword
+
+hi def link zirString Constant
+
+hi def link zirEscape Special
+hi def link zirEscapeUnicode zirEscape
+hi def link zirEscapeError Error
+
+hi def link zirDecNumber Constant
+hi def link zirHexNumber Constant
+hi def link zirOctNumber Constant
+hi def link zirBinNumber Constant
+
+hi def link zirGlobal Ignore
+hi def link zirLocal  Identifier
+
+endif