typeset -g ZERO=${(%):-%N}

_zsh_highlight()
{
  local ret=$?

  if [[ $WIDGET == zle-isearch-update ]] && ! (( $+ISEARCHMATCH_ACTIVE )); then
    region_highlight=()
    return $ret
  fi

  setopt localoptions warncreateglobal noksharrays
  local REPLY
  local -a reply

  [[ -n ${ZSH_HIGHLIGHT_MAXLENGTH:-} ]] && [[ $#BUFFER -gt $ZSH_HIGHLIGHT_MAXLENGTH ]] && return $ret

  [[ $PENDING -gt 0 ]] && return $ret

  if [[ $WIDGET == zle-line-finish ]] || _zsh_highlight_buffer_modified; then
      -fast-highlight-init
      -fast-highlight-process && region_highlight=( $reply ) || region_highlight=()
  fi

  {
    local cache_place
    local -a region_highlight_copy

    if (( REGION_ACTIVE == 1 )); then
      _zsh_highlight_apply_zle_highlight region standout "$MARK" "$CURSOR"
    elif (( REGION_ACTIVE == 2 )); then
      () {
        local needle=$'\n'
        integer min max
        if (( MARK > CURSOR )) ; then
          min=$CURSOR max=$MARK
        else
          min=$MARK max=$CURSOR
        fi
        (( min = ${${BUFFER[1,$min]}[(I)$needle]} ))
        (( max += ${${BUFFER:($max-1)}[(i)$needle]} - 1 ))
        _zsh_highlight_apply_zle_highlight region standout "$min" "$max"
      }
    fi

    (( $+YANK_ACTIVE )) && (( YANK_ACTIVE )) && _zsh_highlight_apply_zle_highlight paste standout "$YANK_START" "$YANK_END"

    (( $+ISEARCHMATCH_ACTIVE )) && (( ISEARCHMATCH_ACTIVE )) && _zsh_highlight_apply_zle_highlight isearch underline "$ISEARCHMATCH_START" "$ISEARCHMATCH_END"

    (( $+SUFFIX_ACTIVE )) && (( SUFFIX_ACTIVE )) && _zsh_highlight_apply_zle_highlight suffix bold "$SUFFIX_START" "$SUFFIX_END"

    return $ret

  } always {
    typeset -g _ZSH_HIGHLIGHT_PRIOR_BUFFER="$BUFFER"
    typeset -g _ZSH_HIGHLIGHT_PRIOR_RACTIVE="$REGION_ACTIVE"
    typeset -gi _ZSH_HIGHLIGHT_PRIOR_CURSOR=$CURSOR
  }
}

_zsh_highlight_apply_zle_highlight() {
  local entry="$1" default="$2"
  integer first="$3" second="$4"

  local region="${zle_highlight[(r)${entry}:*]}"

  if [[ -z "$region" ]]; then
    region=$default
  else
    region="${region#${entry}:}"

    if [[ -z "$region" ]] || [[ "$region" == none ]]; then
      return
    fi
  fi

  integer start end
  if (( first < second )); then
    start=$first end=$second
  else
    start=$second end=$first
  fi
  region_highlight+=("$start $end $region")
}


_zsh_highlight_buffer_modified()
{
  [[ "${_ZSH_HIGHLIGHT_PRIOR_BUFFER:-}" != "$BUFFER" ]] || [[ "$REGION_ACTIVE" != "$_ZSH_HIGHLIGHT_PRIOR_RACTIVE" ]] || { _zsh_highlight_cursor_moved && [[ "$REGION_ACTIVE" = 1 || "$REGION_ACTIVE" = 2 ]] }
}

_zsh_highlight_cursor_moved()
{
  [[ -n $CURSOR ]] && [[ -n ${_ZSH_HIGHLIGHT_PRIOR_CURSOR-} ]] && (($_ZSH_HIGHLIGHT_PRIOR_CURSOR != $CURSOR))
}

_zsh_highlight_call_widget()
{
  builtin zle "$@" && _zsh_highlight
}

_zsh_highlight_bind_widgets()
{
  setopt localoptions noksharrays
  typeset -F SECONDS
  local prefix=orig-s$SECONDS-r$RANDOM

  zmodload zsh/zleparameter 2>/dev/null || {
    print -r -- >&2 'zsh-syntax-highlighting: failed loading zsh/zleparameter.'
    return 1
  }

  local -U widgets_to_bind
  widgets_to_bind=(${${(k)widgets}:#(.*|run-help|which-command|beep|set-local-history|yank)})

  widgets_to_bind+=(zle-line-finish)

  widgets_to_bind+=(zle-isearch-update)

  local cur_widget
  for cur_widget in $widgets_to_bind; do
    case $widgets[$cur_widget] in

      user:_zsh_highlight_widget_*);;

      user:*) zle -N $prefix-$cur_widget ${widgets[$cur_widget]#*:}
              eval "_zsh_highlight_widget_${(q)prefix}-${(q)cur_widget}() { _zsh_highlight_call_widget ${(q)prefix}-${(q)cur_widget} -- \"\$@\" }"
              zle -N $cur_widget _zsh_highlight_widget_$prefix-$cur_widget;;

      completion:*) zle -C $prefix-$cur_widget ${${(s.:.)widgets[$cur_widget]}[2,3]} 
                    eval "_zsh_highlight_widget_${(q)prefix}-${(q)cur_widget}() { _zsh_highlight_call_widget ${(q)prefix}-${(q)cur_widget} -- \"\$@\" }"
                    zle -N $cur_widget _zsh_highlight_widget_$prefix-$cur_widget;;

      builtin) eval "_zsh_highlight_widget_${(q)prefix}-${(q)cur_widget}() { _zsh_highlight_call_widget .${(q)cur_widget} -- \"\$@\" }"
               zle -N $cur_widget _zsh_highlight_widget_$prefix-$cur_widget;;

      *)
         if [[ $cur_widget == zle-* ]] && [[ -z $widgets[$cur_widget] ]]; then
           _zsh_highlight_widget_${cur_widget}() { :; _zsh_highlight }
           zle -N $cur_widget _zsh_highlight_widget_$cur_widget
         else
           print -r -- >&2 "zsh-syntax-highlighting: unhandled ZLE widget ${(qq)cur_widget}"
         fi
    esac
  done
}

_zsh_highlight_bind_widgets || {
  print -r -- >&2 'zsh-syntax-highlighting: failed binding ZLE widgets, exiting.'
  return 1
}

_zsh_highlight_preexec_hook()
{
  typeset -g _ZSH_HIGHLIGHT_PRIOR_BUFFER=
  typeset -gi _ZSH_HIGHLIGHT_PRIOR_CURSOR=0
}

autoload -U add-zsh-hook
add-zsh-hook preexec _zsh_highlight_preexec_hook 2>/dev/null || {
    print -r -- >&2 'zsh-syntax-highlighting: failed loading add-zsh-hook.'
}

ZSH_HIGHLIGHT_MAXLENGTH=10000

zmodload zsh/parameter 2>/dev/null

autoload -U is-at-least
source "${dotlib}/highlight"

[[ "${+termcap[Co]}" = 1 && "${termcap[Co]}" = "256" ]] && FAST_HIGHLIGHT_STYLES[variable]="fg=112"

-fast-highlight-fill-option-variables