caret ^ not escaped in regexp, generates jshint error

[dkorz]

I have the following rule:

text_char 
    = [\-\^$+/():!&'~{}<>= ]

This generates:

  function parse_text_char() {
    var result0;

    if (/^[\-^$+\/():!&'~{}<>= ]/.test(input.charAt(pos))) {
      result0 = input.charAt(pos);
      pos++;
    } else {
      result0 = null;
      if (reportFailures === 0) {
        matchFailed("[\\-^$+\\/():!&'~{}<>= ]");
      }
    }
    return result0;
  }

jshint flags this as an error saying it's unescaped which breaks our build process. I think the code is working correctly but I've just started working with pegjs and haven't done much testing.

I think this can just be added to utils.quoteForRegexpClass(). It's interesting that jshint doesn't complain about the $. I can't find an option in jshint to turn this check off like I was able to with line breaks or I would have done that.

[dmajda]

@dkorz It turned out this was not just a JSHint issue but a real problem — see the example in 1988110 where I fixed the problem.

Thanks for the report!