message: Highlight <Esc> and <Up>/<Down>/<Left><Right> in .vimrc
diff: "name": "constant",
  "match": "<([Bb][Ss])>"
  },
  + {
  + "name": "constant",
  + "match": "<([Ee][Ss][Cc])>"
  + },
  + {
  + "name": "constant",
  + "match": "<(([Uu][Pp])|([Dd][Oo][Ww][Nn])|([Ll][Ee][Ff][Tt])|([Rr][Ii][Gg][Hh][Tt]))>"
  + },
  {
  "name": "constant",
  "match": "<[CcDd]-.>"
  