zsh-syntax-highlighting/contrib/keyword.zsh

#!/usr/bin/env zsh
# -------------------------------------------------------------------------------------------------
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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
# -------------------------------------------------------------------------------------------------

# A simple keyword highlighting extension for zsh-syntax-highlighting.

# To use this, please do the following steps.
# 1) Source this file after zsh-syntax-highlighting.zsh
# % source zsh-syntax-highlighting.zsh
# % source contrib/keyword.zsh
# 2) Add keyword and color pairs to `ZSH_HIGHLIGHT_KEYWORD_KEYWORDS`.
# % ZSH_HIGHLIGHT_KEYWORD_KEYWORDS+=('rm -rf *' 'fg=white,bold,bg=red')
# 3) Please see the effect.
# % ;# rm -rf /tmp/doesnotexist

# List of keyword and color pairs.
typeset -gA ZSH_HIGHLIGHT_KEYWORD_KEYWORDS

_zsh_highlight-keyword() {
  setopt localoptions extendedglob
  for pattern in ${(k)ZSH_HIGHLIGHT_KEYWORD_KEYWORDS}; do
    _zsh_highlight-keyword-loop "$BUFFER" "$pattern"
  done
}

_zsh_highlight-keyword-loop() {
  # This does *not* do its job syntactically, sorry.
  local buf="$1" pat="$2"
  local -a match mbegin mend
  if [[ "$buf" == (#b)(*)(${~pat})* ]]; then
    region_highlight+=("$((mbegin[2] - 1)) $mend[2] $ZSH_HIGHLIGHT_KEYWORD_KEYWORDS[$pat]")
    "$0" "$match[1]" "$pat"; return $?
  fi
}

_zsh_highlight_add-highlighter _zsh_highlight-keyword _zsh_highlight_buffer-modified-p