jison-lex borked

[lambdabaa]

/home/gareth/Documents/math/.tup/mnt/@tupjob-54872/home/gareth/Documents/math/node_modules/jison/node_modules/jison-lex/regexp-lexer.js:54 m = new RegExp("^(?:"+m+")", caseless ? 'i':''); ^ SyntaxError: Invalid regular expression: /^(?:()/: Unterminated group at new RegExp (native) at prepareRules (/home/gareth/Documents/math/.tup/mnt/@tupjob-54872/home/gareth/Documents/math/node_modules/jison/node_modules/jison-lex/regexp-lexer.js:54:57) at Object.buildActions (/home/gareth/Documents/math/.tup/mnt/@tupjob-54872/home/gareth/Documents/math/node_modules/jison/node_modules/jison-lex/regexp-lexer.js:113:18) at Object.RegExpLexer (/home/gareth/Documents/math/.tup/mnt/@tupjob-54872/home/gareth/Documents/math/node_modules/jison/node_modules/jison-lex/regexp-lexer.js:139:39) at Jison_Generator (/home/gareth/Documents/math/.tup/mnt/@tupjob-54872/home/gareth/Documents/math/node_modules/jison/lib/jison.js:111:22) at (anonymous function) (/home/gareth/Documents/math/.tup/mnt/@tupjob-54872/home/gareth/Documents/math/node_modules/jison/lib/util/typal.js:23:28) at new o.constructor (/home/gareth/Documents/math/.tup/mnt/@tupjob-54872/home/gareth/Documents/math/node_modules/jison/lib/util/typal.js:77:70) at new Jison_Generator (/home/gareth/Documents/math/.tup/mnt/@tupjob-54872/home/gareth/Documents/math/node_modules/jison/lib/jison.js:1740:20) at processGrammar (/home/gareth/Documents/math/.tup/mnt/@tupjob-54872/home/gareth/Documents/math/node_modules/jison/lib/cli.js:114:21) at Object.exports.main (/home/gareth/Documents/math/.tup/mnt/@tupjob-54872/home/gareth/Documents/math/node_modules/jison/lib/cli.js:75:56)

[lambdabaa]

Version of jison is 0.4.13 and version of jison-lex is 0.2.x. jison-lex gets upgraded in jison 0.4.14, but I can't use because of https://github.com/zaach/jison/issues/276

[lambdabaa]

Actually I forgot to escape a parens. My bad!