zsh-syntax-highlighting/highlighters/root/root-highlighter.zsh

#!/usr/bin/env zsh
# -------------------------------------------------------------------------------------------------
# Copyright (c) 2010-2011 zsh-syntax-highlighting contributors
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# -------------------------------------------------------------------------------------------------
# -*- mode: zsh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*-
# vim: ft=zsh sw=2 ts=2 et
# -------------------------------------------------------------------------------------------------


# Define default styles.
: ${ZSH_HIGHLIGHT_STYLES[root]:=standout}

# Whether the root highlighter should be called or not.
_zsh_highlight_root_highlighter_predicate()
{
  _zsh_highlight_buffer_modified
}

# root highlighting function.
_zsh_highlight_root_highlighter()
{
  [[ $(command id -u) -eq 0 ]] && region_highlight+=("0 $#BUFFER $ZSH_HIGHLIGHT_STYLES[root]")
}