Update

8 files changed, 223 insertions, 16 deletions

diff --git a/ftplugin/bicep.vim b/ftplugin/bicep.vim
index 112c429e..08af66d8 100644
--- a/ftplugin/bicep.vim
+++ b/ftplugin/bicep.vim
@@ -15,7 +15,7 @@ set cpoptions&vim
 
 " Set the commentstring
 setlocal commentstring=//%s
-let b:undo_ftplugin = ' commentstring<'
+let b:undo_ftplugin = 'setlocal commentstring<'
 
 let &cpoptions = s:cpo_save
 unlet s:cpo_save
diff --git a/ftplugin/markdown.vim b/ftplugin/markdown.vim
index 7ed65fe8..d3129a87 100644
--- a/ftplugin/markdown.vim
+++ b/ftplugin/markdown.vim
@@ -792,7 +792,7 @@ function! s:MarkdownHighlightSources(force)
     " Look for code blocks in the current file
     let filetypes = {}
     for line in getline(1, '$')
-        let ft = matchstr(line, '```\s*\zs[0-9A-Za-z_+-]*\ze.*')
+        let ft = matchstr(line, '\(`\{3,}\|\~\{3,}\)\s*\zs[0-9A-Za-z_+-]*\ze.*')
         if !empty(ft) && ft !~# '^\d*$' | let filetypes[ft] = 1 | endif
     endfor
     if !exists('b:mkd_known_filetypes')
@@ -823,8 +823,10 @@ function! s:MarkdownHighlightSources(force)
             else
                 let include = '@' . toupper(filetype)
             endif
-            let command = 'syntax region %s matchgroup=%s start="^\s*```\s*%s.*$" matchgroup=%s end="\s*```$" keepend contains=%s%s'
-            execute printf(command, group, startgroup, ft, endgroup, include, has('conceal') && get(g:, 'vim_markdown_conceal', 1) && get(g:, 'vim_markdown_conceal_code_blocks', 1) ? ' concealends' : '')
+            let command_backtick = 'syntax region %s matchgroup=%s start="^\s*`\{3,}\s*%s.*$" matchgroup=%s end="\s*`\{3,}$" keepend contains=%s%s'
+            let command_tilde    = 'syntax region %s matchgroup=%s start="^\s*\~\{3,}\s*%s.*$" matchgroup=%s end="\s*\~\{3,}$" keepend contains=%s%s'
+            execute printf(command_backtick, group, startgroup, ft, endgroup, include, has('conceal') && get(g:, 'vim_markdown_conceal', 1) && get(g:, 'vim_markdown_conceal_code_blocks', 1) ? ' concealends' : '')
+            execute printf(command_tilde,    group, startgroup, ft, endgroup, include, has('conceal') && get(g:, 'vim_markdown_conceal', 1) && get(g:, 'vim_markdown_conceal_code_blocks', 1) ? ' concealends' : '')
             execute printf('syntax cluster mkdNonListItem add=%s', group)
 
             let b:mkd_known_filetypes[ft] = 1
diff --git a/indent/svelte-css.vim b/indent/svelte-css.vim
new file mode 100644
index 00000000..6e07835b
--- /dev/null
+++ b/indent/svelte-css.vim
@@ -0,0 +1,91 @@
+if polyglot#init#is_disabled(expand('<sfile>:p'), 'svelte', 'indent/svelte-css.vim')
+  finish
+endif
+
+" Vim indent file
+" Language:	    CSS
+" Maintainer:	    Nikolai Weibull <now@bitwi.se>
+" Latest Revision:  2012-05-30
+"		    Use of shiftwidth() added by Oleg Zubchenko.	
+
+" Changes: 1) Reacquire the line while checking comment lines.
+
+if exists("b:did_indent")
+  finish
+endif
+let b:did_indent = 1
+
+setlocal indentexpr=GetCSSIndent()
+setlocal indentkeys=0{,0},!^F,o,O
+setlocal nosmartindent
+
+let b:undo_indent = "setl smartindent< indentkeys< indentexpr<"
+
+if exists("*GetCSSIndent")
+  finish
+endif
+let s:keepcpo= &cpo
+set cpo&vim
+
+function s:prevnonblanknoncomment(lnum)
+  let lnum = a:lnum
+  while lnum > 1
+    let lnum = prevnonblank(lnum)
+    let line = getline(lnum)
+    if line =~ '\*/'
+      while lnum > 1 && line !~ '/\*'
+        let lnum -= 1
+        let line = getline(lnum)
+      endwhile
+      if line =~ '^\s*/\*'
+        let lnum -= 1
+      else
+        break
+      endif
+    else
+      break
+    endif
+  endwhile
+  return lnum
+endfunction
+
+function s:count_braces(lnum, count_open)
+  let n_open = 0
+  let n_close = 0
+  let line = getline(a:lnum)
+  let pattern = '[{}]'
+  let i = match(line, pattern)
+  while i != -1
+    if synIDattr(synID(a:lnum, i + 1, 0), 'name') !~ 'css\%(Comment\|StringQ\{1,2}\)'
+      if line[i] == '{'
+        let n_open += 1
+      elseif line[i] == '}'
+        if n_open > 0
+          let n_open -= 1
+        else
+          let n_close += 1
+        endif
+      endif
+    endif
+    let i = match(line, pattern, i + 1)
+  endwhile
+  return a:count_open ? n_open : n_close
+endfunction
+
+function GetCSSIndent()
+  let line = getline(v:lnum)
+  if line =~ '^\s*\*'
+    return cindent(v:lnum)
+  endif
+
+  let pnum = s:prevnonblanknoncomment(v:lnum - 1)
+  if pnum == 0
+    return 0
+  endif
+
+  return indent(pnum) + s:count_braces(pnum, 1) * shiftwidth()
+        \ - s:count_braces(v:lnum, 0) * shiftwidth()
+endfunction
+
+let &cpo = s:keepcpo
+unlet s:keepcpo
diff --git a/indent/svelte-xml.vim b/indent/svelte-xml.vim
new file mode 100644
index 00000000..18148abb
--- /dev/null
+++ b/indent/svelte-xml.vim
@@ -0,0 +1,111 @@
+if polyglot#init#is_disabled(expand('<sfile>:p'), 'svelte', 'indent/svelte-xml.vim')
+  finish
+endif
+
+" Language:	xml
+" Maintainer:	Johannes Zellner <johannes@zellner.org>
+" Last Change:	2017 Jun 13
+" Notes:	1) does not indent pure non-xml code (e.g. embedded scripts)
+"		2) will be confused by unbalanced tags in comments
+"		or CDATA sections.
+"		2009-05-26 patch by Nikolai Weibull
+" TODO: 	implement pre-like tags, see xml_indent_open / xml_indent_close
+
+" Only load this indent file when no other was loaded.
+if exists("b:did_indent")
+    finish
+endif
+let b:did_indent = 1
+let s:keepcpo= &cpo
+set cpo&vim
+
+" [-- local settings (must come before aborting the script) --]
+setlocal indentexpr=XmlIndentGet(v:lnum,1)
+setlocal indentkeys=o,O,*<Return>,<>>,<<>,/,{,}
+
+if !exists('b:xml_indent_open')
+    let b:xml_indent_open = '.\{-}<\a'
+    " pre tag, e.g. <address>
+    " let b:xml_indent_open = '.\{-}<[/]\@!\(address\)\@!'
+endif
+
+if !exists('b:xml_indent_close')
+    let b:xml_indent_close = '.\{-}</'
+    " end pre tag, e.g. </address>
+    " let b:xml_indent_close = '.\{-}</\(address\)\@!'
+endif
+
+let &cpo = s:keepcpo
+unlet s:keepcpo
+
+" [-- finish, if the function already exists --]
+if exists('*XmlIndentGet')
+  finish
+endif
+
+let s:keepcpo= &cpo
+set cpo&vim
+
+fun! <SID>XmlIndentWithPattern(line, pat)
+    let s = substitute('x'.a:line, a:pat, "\1", 'g')
+    return strlen(substitute(s, "[^\1].*$", '', ''))
+endfun
+
+" [-- check if it's xml --]
+fun! <SID>XmlIndentSynCheck(lnum)
+    if '' != &syntax
+	let syn1 = synIDattr(synID(a:lnum, 1, 1), 'name')
+	let syn2 = synIDattr(synID(a:lnum, strlen(getline(a:lnum)) - 1, 1), 'name')
+	if '' != syn1 && syn1 !~ 'xml' && '' != syn2 && syn2 !~ 'xml'
+	    " don't indent pure non-xml code
+	    return 0
+	elseif syn1 =~ '^xmlComment' && syn2 =~ '^xmlComment'
+	    " indent comments specially
+	    return -1
+	endif
+    endif
+    return 1
+endfun
+
+" [-- return the sum of indents of a:lnum --]
+fun! <SID>XmlIndentSum(lnum, style, add)
+    let line = getline(a:lnum)
+    if a:style == match(line, '^\s*</')
+	return (shiftwidth() *
+	\  (<SID>XmlIndentWithPattern(line, b:xml_indent_open)
+	\ - <SID>XmlIndentWithPattern(line, b:xml_indent_close)
+	\ - <SID>XmlIndentWithPattern(line, '.\{-}/>'))) + a:add
+    else
+	return a:add
+    endif
+endfun
+
+fun! XmlIndentGet(lnum, use_syntax_check)
+    " Find a non-empty line above the current line.
+    let lnum = prevnonblank(a:lnum - 1)
+
+    " Hit the start of the file, use zero indent.
+    if lnum == 0
+	return 0
+    endif
+
+    if a:use_syntax_check
+	let check_lnum = <SID>XmlIndentSynCheck(lnum)
+	let check_alnum = <SID>XmlIndentSynCheck(a:lnum)
+	if 0 == check_lnum || 0 == check_alnum
+	    return indent(a:lnum)
+	elseif -1 == check_lnum || -1 == check_alnum
+	    return -1
+	endif
+    endif
+
+    let ind = <SID>XmlIndentSum(lnum, -1, indent(lnum))
+    let ind = <SID>XmlIndentSum(a:lnum, 0, ind)
+
+    return ind
+endfun
+
+let &cpo = s:keepcpo
+unlet s:keepcpo
+
+" vim:ts=8
diff --git a/indent/svelte.vim b/indent/svelte.vim
index bae715df..7c09f361 100644
--- a/indent/svelte.vim
+++ b/indent/svelte.vim
@@ -55,12 +55,12 @@ let s:debug = svelte#GetConfig('debug', 0)
 " Save shiftwidth
 let s:sw = &sw
 
-" Use lib/indent/ files for compatibility
+" Use specific indent files for compatibility
 unlet! b:did_indent
-runtime lib/indent/xml.vim
+runtime indent/svelte-xml.vim
 
 unlet! b:did_indent
-runtime lib/indent/css.vim
+runtime indent/svelte-css.vim
 
 " Use normal indent files
 unlet! b:did_indent
diff --git a/syntax/nix.vim b/syntax/nix.vim
index c3185bad..b45299bf 100644
--- a/syntax/nix.vim
+++ b/syntax/nix.vim
@@ -43,6 +43,8 @@ syn match nixStringSpecial /''['$]/ contained
 syn match nixStringSpecial /\$\$/ contained
 syn match nixStringSpecial /''\\[nrt]/ contained
 
+syn match nixSimpleStringSpecial /\$\$/ contained
+
 syn match nixInvalidSimpleStringEscape /\\[^nrt"\\$]/ contained
 syn match nixInvalidStringEscape /''\\[^nrt]/ contained
 
@@ -63,7 +65,7 @@ syn match nixAttribute "[a-zA-Z_][a-zA-Z0-9_'-]*\ze\%([^a-zA-Z0-9_'.-]\|$\)" con
 syn region nixAttributeAssignment start="=" end="\ze;" contained contains=@nixExpr
 syn region nixAttributeDefinition start=/\ze[a-zA-Z_"$]/ end=";" contained contains=nixComment,nixAttribute,nixInterpolation,nixSimpleString,nixAttributeDot,nixAttributeAssignment
 
-syn region nixInheritAttributeScope start="(" end=")" contained contains=nixComment,nixAttributeDot
+syn region nixInheritAttributeScope start="(" end="\ze)" contained contains=@nixExpr
 syn region nixAttributeDefinition matchgroup=nixInherit start="\<inherit\>" end=";" contained contains=nixComment,nixInheritAttributeScope,nixAttribute
 
 syn region nixAttributeSet start="{" end="}" contains=nixComment,nixAttributeDefinition
@@ -133,7 +135,7 @@ syn match nixInterpolationParam "[a-zA-Z_][a-zA-Z0-9_'-]*\%(\.[a-zA-Z_][a-zA-Z0-
 " Non-namespaced Nix builtins as of version 2.0:
 syn keyword nixSimpleBuiltin
       \ abort baseNameOf derivation derivationStrict dirOf fetchGit
-      \ fetchMercurial fetchTarball import isNull map placeholder removeAttrs
+      \ fetchMercurial fetchTarball import isNull map mapAttrs placeholder removeAttrs
       \ scopedImport throw toString
 
 
@@ -146,13 +148,13 @@ syn keyword nixNamespacedBuiltin contained
       \ findFile foldl' fromJSON functionArgs genList \ genericClosure getAttr
       \ getEnv hasAttr hasContext hashString head import intersectAttrs isAttrs
       \ isBool isFloat isFunction isInt isList isNull isString langVersion
-      \ length lessThan listToAttrs map match mul nixPath nixVersion
+      \ length lessThan listToAttrs map mapAttrs match mul nixPath nixVersion
       \ parseDrvName partition path pathExists placeholder readDir readFile
       \ removeAttrs replaceStrings scopedImport seq sort split splitVersion
       \ storeDir storePath stringLength sub substring tail throw toFile toJSON
       \ toPath toString toXML trace tryEval typeOf unsafeDiscardOutputDependency
       \ unsafeDiscardStringContext unsafeGetAttrPos valueSize fromTOML bitAnd
-      \ bitOr bitXor
+      \ bitOr bitXor floor ceil
 
 syn match nixBuiltin "builtins\.[a-zA-Z']\+"he=s+9 contains=nixComment,nixNamespacedBuiltin
 
diff --git a/syntax/ruby.vim b/syntax/ruby.vim
index d5c9e728..a2fae63a 100644
--- a/syntax/ruby.vim
+++ b/syntax/ruby.vim
@@ -148,9 +148,9 @@ syn cluster rubyStringSpecial	 contains=rubyInterpolation,rubyStringEscape
 syn cluster rubyStringNotTop	 contains=@rubyStringSpecial,@rubyNestedBrackets,@rubySingleCharEscape
 
 " Regular Expression Metacharacters {{{1
-syn region rubyRegexpComment	  matchgroup=rubyRegexpSpecial	 start="(?#"								    skip="\\\\\|\\)"  end=")"  contained
-syn region rubyRegexpParens	  matchgroup=rubyRegexpSpecial	 start="(\(?:\|?<\=[=!]\|?>\|?<[a-z_]\w*>\|?[imx]*-[imx]*:\=\|\%(?#\)\@!\)" skip="\\\\\|\\)"  end=")"  contained transparent contains=@rubyRegexpSpecial
-syn region rubyRegexpBrackets	  matchgroup=rubyRegexpCharClass start="\[\^\="								    skip="\\\\\|\\\]" end="\]" contained transparent contains=rubyRegexpBrackets,rubyStringEscape,rubyRegexpEscape,rubyRegexpCharClass,rubyRegexpIntersection oneline
+syn region rubyRegexpComment	  matchgroup=rubyRegexpSpecial	 start="(?#"								     skip="\\\\\|\\)"  end=")"	contained
+syn region rubyRegexpParens	  matchgroup=rubyRegexpSpecial	 start="(\%(?:\|?<\=[=!]\|?>\|?<[a-z_]\w*>\|?[imx]*-[imx]*:\=\|\%(?#\)\@!\)" skip="\\\\\|\\)"  end=")"	contained transparent contains=@rubyRegexpSpecial
+syn region rubyRegexpBrackets	  matchgroup=rubyRegexpCharClass start="\[\^\="								     skip="\\\\\|\\\]" end="\]" contained transparent contains=rubyRegexpBrackets,rubyStringEscape,rubyRegexpEscape,rubyRegexpCharClass,rubyRegexpIntersection oneline
 syn match  rubyRegexpCharClass	  "\\[DdHhRSsWw]"	 contained display
 syn match  rubyRegexpCharClass	  "\[:\^\=\%(alnum\|alpha\|ascii\|blank\|cntrl\|digit\|graph\|lower\|print\|punct\|space\|upper\|word\|xdigit\):\]" contained
 syn match  rubyRegexpCharClass	  "\\[pP]{^\=.\{-}}"	 contained display
@@ -349,7 +349,7 @@ syn cluster rubyDeclaration contains=rubyAliasDeclaration,rubyAliasDeclaration2,
 syn match rubyControl	     "\%#=1\<\%(break\|in\|next\|redo\|retry\|return\)\>"
 syn match rubyKeyword	     "\%#=1\<\%(super\|yield\)\>"
 syn match rubyBoolean	     "\%#=1\<\%(true\|false\)\>[?!]\@!"
-syn match rubyPseudoVariable "\%#=1\<\(self\|nil\)\>[?!]\@!"
+syn match rubyPseudoVariable "\%#=1\<\%(self\|nil\)\>[?!]\@!"
 syn match rubyPseudoVariable "\%#=1\<__\%(ENCODING\|dir\|FILE\|LINE\|callee\|method\)__\>"
 syn match rubyBeginEnd	     "\%#=1\<\%(BEGIN\|END\)\>"
 
@@ -421,7 +421,7 @@ if !exists("ruby_no_special_methods")
   syn match rubyAccess	  "\%#=1\<\%(public\|private\)_class_method\>"
   syn match rubyAccess	  "\%#=1\<\%(public\|private\)_constant\>"
   syn match rubyAccess	  "\%#=1\<module_function\>"
-  syn match rubyAttribute "\%#=1\%(\%(^\|;\)\s*\)\@<=attr\>\(\s*[.=]\)\@!" " attr is a common variable name
+  syn match rubyAttribute "\%#=1\%(\%(^\|;\)\s*\)\@<=attr\>\%(\s*[.=]\)\@!" " attr is a common variable name
   syn match rubyAttribute "\%#=1\<attr_\%(accessor\|reader\|writer\)\>"
   syn match rubyControl   "\%#=1\<\%(abort\|at_exit\|exit\|fork\|loop\|trap\)\>"
   syn match rubyEval	  "\%#=1\<eval\>"
diff --git a/syntax/zig.vim b/syntax/zig.vim
index 8946000c..ddc5bf76 100644
--- a/syntax/zig.vim
+++ b/syntax/zig.vim
@@ -195,6 +195,7 @@ let s:zig_syntax_keywords = {
     \ ,                  "@Vector"
     \ ,                  "@sin"
     \ ,                  "@cos"
+    \ ,                  "@tan"
     \ ,                  "@exp"
     \ ,                  "@exp2"
     \ ,                  "@log"