-- a highlight lang definition for javascript regexes, by Jess Austin

Description = "Javascript Regex"

Categories = {"source", "script"}

Keywords = {
  { -- backslash literals
    Id = 1,
    Regex = [=[\\.]]=]
  },
  { -- character classes
    Id = 2,
    Regex = [[ (\:(alnum|alpha|blank|cntrl|graph|print|punct|xdigit|unicode|word|space|digit|lower|upper)\:) ]], Group=1
  }
}

Strings = { -- character sets
  DelimiterPairs = { { Open = "\\[", Close = "\\]" } },
  Escape = [=[\\u\{[[:xdigit:]]+\}|\\u[[:xdigit:]]{4}|\\x[[:xdigit:]]{2}|\\c[A-Z]|\\[[bBdDsSwWtrnvf0]]=],
}

Operators = [[\.|\+|\*|\^|\$|\||\?:|\?=|\?!|\?|\(|\)]]
Digits = [[\{\d+,?\d*\}]] -- integer quantifierso