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" Vim syntax file
" Language:             Zsh shell script
" Maintainer:           Christian Brabandt <cb@256bit.org>
" Previous Maintainer:  Nikolai Weibull <now@bitwi.se>
" Latest Revision:      2020-11-21
" License:              Vim (see :h license)
" Repository:           https://github.com/chrisbra/vim-zsh

if exists("b:current_syntax")
  finish
endif

let s:cpo_save = &cpo
set cpo&vim

function! s:ContainedGroup()
  " needs 7.4.2008 for execute() function
  let result='TOP'
    " vim-pandoc syntax defines the @langname cluster for embedded syntax languages
    " However, if no syntax is defined yet, `syn list @zsh` will return
    " "No syntax items defined", so make sure the result is actually a valid syn cluster
    for cluster in ['markdownHighlightzsh', 'zsh']
      try
      " markdown syntax defines embedded clusters as @markdownhighlight<lang>,
      " pandoc just uses @<lang>, so check both for both clusters
        let a=split(execute('syn list @'. cluster), "\n")
        if len(a) == 2 && a[0] =~# '^---' && a[1] =~? cluster
          return  '@'. cluster
        endif
      catch /E392/
        " ignore
      endtry
    endfor
    return result
endfunction

let s:contained=s:ContainedGroup()

syn iskeyword @,48-57,_,192-255,#,-
if get(g:, 'zsh_fold_enable', 0)
    setlocal foldmethod=syntax
endif

syn match   zshPOSIXQuoted      '\\[xX][0-9a-fA-F]\{1,2}'
syn match   zshPOSIXQuoted      '\\[0-7]\{1,3}'
syn match   zshPOSIXQuoted      '\\u[0-9a-fA-F]\{1,4}'
syn match   zshPOSIXQuoted      '\\U[1-9a-fA-F]\{1,8}'
syn match   zshQuoted           '\\.'
syn region  zshString           matchgroup=zshStringDelimiter start=+"+ end=+"+
                                \ contains=zshQuoted,@zshDerefs,@zshSubst fold
syn region  zshString           matchgroup=zshStringDelimiter start=+'+ end=+'+ fold
syn region  zshPOSIXString      matchgroup=zshStringDelimiter start=+\$'+
                                \ skip=+\\[\\']+ end=+'+ contains=zshPOSIXQuoted,zshQuoted
syn match   zshJobSpec          '%\(\d\+\|?\=\w\+\|[%+-]\)'

syn keyword zshPrecommand       noglob nocorrect exec command builtin - time

syn keyword zshDelimiter        do done end

syn keyword zshConditional      if then elif else fi case in esac select

syn keyword zshRepeat           while until repeat

syn keyword zshRepeat           for foreach nextgroup=zshVariable skipwhite

syn keyword zshException        always

syn keyword zshKeyword          function nextgroup=zshKSHFunction skipwhite

syn match   zshKSHFunction      contained '\w\S\+'
syn match   zshFunction         '^\s*\k\+\ze\s*()'

syn match   zshOperator         '||\|&&\|;\|&!\='

syn match   zshRedir            '\d\=\(<\|<>\|<<<\|<&\s*[0-9p-]\=\)'
syn match   zshRedir            '\d\=\(>\|>>\|>&\s*[0-9p-]\=\|&>\|>>&\|&>>\)[|!]\='
syn match   zshRedir            '|&\='

syn region  zshHereDoc          matchgroup=zshRedir
                                \ start='<\@<!<<\s*\z([^<]\S*\)'
                                \ end='^\z1\>'
                                \ contains=@zshSubst,@zshDerefs,zshQuoted,zshPOSIXString
syn region  zshHereDoc          matchgroup=zshRedir
                                \ start='<\@<!<<\s*\\\z(\S\+\)'
                                \ end='^\z1\>'
                                \ contains=@zshSubst,@zshDerefs,zshQuoted,zshPOSIXString
syn region  zshHereDoc          matchgroup=zshRedir
                                \ start='<\@<!<<-\s*\\\=\z(\S\+\)'
                                \ end='^\s*\z1\>'
                                \ contains=@zshSubst,@zshDerefs,zshQuoted,zshPOSIXString
syn region  zshHereDoc          matchgroup=zshRedir
                                \ start=+<\@<!<<\s*\(["']\)\z(\S\+\)\1+
                                \ end='^\z1\>'
syn region  zshHereDoc          matchgroup=zshRedir
                                \ start=+<\@<!<<-\s*\(["']\)\z(\S\+\)\1+
                                \ end='^\s*\z1\>'

syn match   zshVariable         '\<\h\w*' contained

syn match   zshVariableDef      '\<\h\w*\ze+\=='
" XXX: how safe is this?
syn region  zshVariableDef      oneline
                                \ start='\$\@<!\<\h\w*\[' end='\]\ze+\?=\?'
                                \ contains=@zshSubst

syn cluster zshDerefs           contains=zshShortDeref,zshLongDeref,zshDeref,zshDollarVar

syn match zshShortDeref       '\$[!#$*@?_-]\w\@!'
syn match zshShortDeref       '\$[=^~]*[#+]*\d\+\>'

syn match zshLongDeref        '\$\%(ARGC\|argv\|status\|pipestatus\|CPUTYPE\|EGID\|EUID\|ERRNO\|GID\|HOST\|LINENO\|LOGNAME\)'
syn match zshLongDeref        '\$\%(MACHTYPE\|OLDPWD OPTARG\|OPTIND\|OSTYPE\|PPID\|PWD\|RANDOM\|SECONDS\|SHLVL\|signals\)'
syn match zshLongDeref        '\$\%(TRY_BLOCK_ERROR\|TTY\|TTYIDLE\|UID\|USERNAME\|VENDOR\|ZSH_NAME\|ZSH_VERSION\|REPLY\|reply\|TERM\)'

syn match zshDollarVar        '\$\h\w*'
syn match zshDeref            '\$[=^~]*[#+]*\h\w*\>'

syn match   zshCommands         '\%(^\|\s\)[.:]\ze\s'
syn keyword zshCommands         alias autoload bg bindkey break bye cap cd
                                \ chdir clone comparguments compcall compctl
                                \ compdescribe compfiles compgroups compquote
                                \ comptags comptry compvalues continue dirs
                                \ disable disown echo echotc echoti emulate
                                \ enable eval exec exit export false fc fg
                                \ functions getcap getln getopts hash history
                                \ jobs kill let limit log logout popd print
                                \ printf pushd pushln pwd r read
                                \ rehash return sched set setcap shift
                                \ source stat suspend test times trap true
                                \ ttyctl type ulimit umask unalias unfunction
                                \ unhash unlimit unset  vared wait
                                \ whence where which zcompile zformat zftp zle
                                \ zmodload zparseopts zprof zpty zrecompile
                                \ zregexparse zsocket zstyle ztcp

" Options, generated by: echo ${(j:\n:)options[(I)*]} | sort
" Create a list of option names from zsh source dir:
"     #!/bin/zsh
"    topdir=/path/to/zsh-xxx
"    grep '^pindex([A-Za-z_]*)$' $topdir/Doc/Zsh/options.yo |
"    while read opt
"    do
"        echo ${${(L)opt#pindex\(}%\)}
"    done

syn case ignore

syn match   zshOptStart /^\s*\%(\%(\%(un\)\?setopt\)\|set\s+[-+]o\)/ nextgroup=zshOption skipwhite
syn match   zshOption /
      \ \%(\%(\<no_\?\)\?aliases\>\)\|
      \ \%(\%(\<no_\?\)\?aliasfuncdef\>\)\|\%(\%(no_\?\)\?alias_func_def\>\)\|
      \ \%(\%(\<no_\?\)\?allexport\>\)\|\%(\%(no_\?\)\?all_export\>\)\|
      \ \%(\%(\<no_\?\)\?alwayslastprompt\>\)\|\%(\%(no_\?\)\?always_last_prompt\>\)\|\%(\%(no_\?\)\?always_lastprompt\>\)\|
      \ \%(\%(\<no_\?\)\?alwaystoend\>\)\|\%(\%(no_\?\)\?always_to_end\>\)\|
      \ \%(\%(\<no_\?\)\?appendcreate\>\)\|\%(\%(no_\?\)\?append_create\>\)\|
      \ \%(\%(\<no_\?\)\?appendhistory\>\)\|\%(\%(no_\?\)\?append_history\>\)\|
      \ \%(\%(\<no_\?\)\?autocd\>\)\|\%(\%(no_\?\)\?auto_cd\>\)\|
      \ \%(\%(\<no_\?\)\?autocontinue\>\)\|\%(\%(no_\?\)\?auto_continue\>\)\|
      \ \%(\%(\<no_\?\)\?autolist\>\)\|\%(\%(no_\?\)\?auto_list\>\)\|
      \ \%(\%(\<no_\?\)\?automenu\>\)\|\%(\%(no_\?\)\?auto_menu\>\)\|
      \ \%(\%(\<no_\?\)\?autonamedirs\>\)\|\%(\%(no_\?\)\?auto_name_dirs\>\)\|
      \ \%(\%(\<no_\?\)\?autoparamkeys\>\)\|\%(\%(no_\?\)\?auto_param_keys\>\)\|
      \ \%(\%(\<no_\?\)\?autoparamslash\>\)\|\%(\%(no_\?\)\?auto_param_slash\>\)\|
      \ \%(\%(\<no_\?\)\?autopushd\>\)\|\%(\%(no_\?\)\?auto_pushd\>\)\|
      \ \%(\%(\<no_\?\)\?autoremoveslash\>\)\|\%(\%(no_\?\)\?auto_remove_slash\>\)\|
      \ \%(\%(\<no_\?\)\?autoresume\>\)\|\%(\%(no_\?\)\?auto_resume\>\)\|
      \ \%(\%(\<no_\?\)\?badpattern\>\)\|\%(\%(no_\?\)\?bad_pattern\>\)\|
      \ \%(\%(\<no_\?\)\?banghist\>\)\|\%(\%(no_\?\)\?bang_hist\>\)\|
      \ \%(\%(\<no_\?\)\?bareglobqual\>\)\|\%(\%(no_\?\)\?bare_glob_qual\>\)\|
      \ \%(\%(\<no_\?\)\?bashautolist\>\)\|\%(\%(no_\?\)\?bash_auto_list\>\)\|
      \ \%(\%(\<no_\?\)\?bashrematch\>\)\|\%(\%(no_\?\)\?bash_rematch\>\)\|
      \ \%(\%(\<no_\?\)\?beep\>\)\|
      \ \%(\%(\<no_\?\)\?bgnice\>\)\|\%(\%(no_\?\)\?bg_nice\>\)\|
      \ \%(\%(\<no_\?\)\?braceccl\>\)\|\%(\%(no_\?\)\?brace_ccl\>\)\|
      \ \%(\%(\<no_\?\)\?braceexpand\>\)\|\%(\%(no_\?\)\?brace_expand\>\)\|
      \ \%(\%(\<no_\?\)\?bsdecho\>\)\|\%(\%(no_\?\)\?bsd_echo\>\)\|
      \ \%(\%(\<no_\?\)\?caseglob\>\)\|\%(\%(no_\?\)\?case_glob\>\)\|
      \ \%(\%(\<no_\?\)\?casematch\>\)\|\%(\%(no_\?\)\?case_match\>\)\|
      \ \%(\%(\<no_\?\)\?cbases\>\)\|\%(\%(no_\?\)\?c_bases\>\)\|
      \ \%(\%(\<no_\?\)\?cdablevars\>\)\|\%(\%(no_\?\)\?cdable_vars\>\)\|\%(\%(no_\?\)\?cd_able_vars\>\)\|
      \ \%(\%(\<no_\?\)\?cdsilent\>\)\|\%(\%(no_\?\)\?cd_silent\>\)\|\%(\%(no_\?\)\?cd_silent\>\)\|
      \ \%(\%(\<no_\?\)\?chasedots\>\)\|\%(\%(no_\?\)\?chase_dots\>\)\|
      \ \%(\%(\<no_\?\)\?chaselinks\>\)\|\%(\%(no_\?\)\?chase_links\>\)\|
      \ \%(\%(\<no_\?\)\?checkjobs\>\)\|\%(\%(no_\?\)\?check_jobs\>\)\|
      \ \%(\%(\<no_\?\)\?checkrunningjobs\>\)\|\%(\%(no_\?\)\?check_running_jobs\>\)\|
      \ \%(\%(\<no_\?\)\?clobber\>\)\|
      \ \%(\%(\<no_\?\)\?clobberempty\>\)\|\%(\%(no_\?\)\?clobber_empty\>\)\|
      \ \%(\%(\<no_\?\)\?combiningchars\>\)\|\%(\%(no_\?\)\?combining_chars\>\)\|
      \ \%(\%(\<no_\?\)\?completealiases\>\)\|\%(\%(no_\?\)\?complete_aliases\>\)\|
      \ \%(\%(\<no_\?\)\?completeinword\>\)\|\%(\%(no_\?\)\?complete_in_word\>\)\|
      \ \%(\%(\<no_\?\)\?continueonerror\>\)\|\%(\%(no_\?\)\?continue_on_error\>\)\|
      \ \%(\%(\<no_\?\)\?correct\>\)\|
      \ \%(\%(\<no_\?\)\?correctall\>\)\|\%(\%(no_\?\)\?correct_all\>\)\|
      \ \%(\%(\<no_\?\)\?cprecedences\>\)\|\%(\%(no_\?\)\?c_precedences\>\)\|
      \ \%(\%(\<no_\?\)\?cshjunkiehistory\>\)\|\%(\%(no_\?\)\?csh_junkie_history\>\)\|
      \ \%(\%(\<no_\?\)\?cshjunkieloops\>\)\|\%(\%(no_\?\)\?csh_junkie_loops\>\)\|
      \ \%(\%(\<no_\?\)\?cshjunkiequotes\>\)\|\%(\%(no_\?\)\?csh_junkie_quotes\>\)\|
      \ \%(\%(\<no_\?\)\?csh_nullcmd\>\)\|\%(\%(no_\?\)\?csh_null_cmd\>\)\|\%(\%(no_\?\)\?cshnullcmd\>\)\|\%(\%(no_\?\)\?csh_null_cmd\>\)\|
      \ \%(\%(\<no_\?\)\?cshnullglob\>\)\|\%(\%(no_\?\)\?csh_null_glob\>\)\|
      \ \%(\%(\<no_\?\)\?debugbeforecmd\>\)\|\%(\%(no_\?\)\?debug_before_cmd\>\)\|
      \ \%(\%(\<no_\?\)\?dotglob\>\)\|\%(\%(no_\?\)\?dot_glob\>\)\|
      \ \%(\%(\<no_\?\)\?dvorak\>\)\|
      \ \%(\%(\<no_\?\)\?emacs\>\)\|
      \ \%(\%(\<no_\?\)\?equals\>\)\|
      \ \%(\%(\<no_\?\)\?errexit\>\)\|\%(\%(no_\?\)\?err_exit\>\)\|
      \ \%(\%(\<no_\?\)\?errreturn\>\)\|\%(\%(no_\?\)\?err_return\>\)\|
      \ \%(\%(\<no_\?\)\?evallineno\>\)\|\%(\%(no_\?\)\?eval_lineno\>\)\|
      \ \%(\%(\<no_\?\)\?exec\>\)\|
      \ \%(\%(\<no_\?\)\?extendedglob\>\)\|\%(\%(no_\?\)\?extended_glob\>\)\|
      \ \%(\%(\<no_\?\)\?extendedhistory\>\)\|\%(\%(no_\?\)\?extended_history\>\)\|
      \ \%(\%(\<no_\?\)\?flowcontrol\>\)\|\%(\%(no_\?\)\?flow_control\>\)\|
      \ \%(\%(\<no_\?\)\?forcefloat\>\)\|\%(\%(no_\?\)\?force_float\>\)\|
      \ \%(\%(\<no_\?\)\?functionargzero\>\)\|\%(\%(no_\?\)\?function_argzero\>\)\|\%(\%(no_\?\)\?function_arg_zero\>\)\|
      \ \%(\%(\<no_\?\)\?glob\>\)\|
      \ \%(\%(\<no_\?\)\?globalexport\>\)\|\%(\%(no_\?\)\?global_export\>\)\|
      \ \%(\%(\<no_\?\)\?globalrcs\>\)\|\%(\%(no_\?\)\?global_rcs\>\)\|
      \ \%(\%(\<no_\?\)\?globassign\>\)\|\%(\%(no_\?\)\?glob_assign\>\)\|
      \ \%(\%(\<no_\?\)\?globcomplete\>\)\|\%(\%(no_\?\)\?glob_complete\>\)\|
      \ \%(\%(\<no_\?\)\?globdots\>\)\|\%(\%(no_\?\)\?glob_dots\>\)\|
      \ \%(\%(\<no_\?\)\?glob_subst\>\)\|\%(\%(no_\?\)\?globsubst\>\)\|
      \ \%(\%(\<no_\?\)\?globstarshort\>\)\|\%(\%(no_\?\)\?glob_star_short\>\)\|
      \ \%(\%(\<no_\?\)\?hashall\>\)\|\%(\%(no_\?\)\?hash_all\>\)\|
      \ \%