Parser swallow slashes while parsing strings

[jcubic]

When --> docs is parsed

  "Helper macro that simplify calling methods on objects. It work with chaining

   usage: (--> ($ \"body\")
               (css \"color\" \"red\")
               (on \"click\" (lambda () (display \"click\"))))

          (--> document (querySelectorAll \"div\"))
          (--> (fetch \"https://jcubic.pl\") (text) (match /<title>([^<]+)<\\/title>/) 1)
          (--> document (querySelectorAll \".cmd-prompt\") 0 \"innerText\")"

it have regex as string /<title>([^<]+)<\\/title>/, the escaped slash (for string) is ignored by the parser, so you can't execute that code if you use (help -->) and copy paste.

• fix issue
• write unit tests

[jcubic]

The code was rewriten and fixed, when adding parsing of hex literals.