example from quick tour doesnt compile

[gavr123456789]

https://erg-lang.org/the-erg-book/quick_tour.html#literal-patterns

Error[#0072]: File <stdin>, line 3, 

3 | 1 = i???
  : -

invalid syntax

https://erg-lang.org/web-ide/?code=MQAglgZiAGbSBjAhgOxQewC4gEYFMQATPTPAJwFswU9CRN1cCBGEJbBdCgBzABsCmMBTwAaEABUAntzwBRMmXRkQ6BAgCuZAM4A6AFChtAC2WZjqOuijQA+gC4QAb2YBfEAF5w0fay9hDEG1hbgEQbnZSMhQQCnYEY2oAc304zASQAA97fRA8kFYAWgA+EAAiZjLc-IAmEBLymqr8kFt60rKsY3Iq0AgwHHQUJHUwEAgNFAQhIf1+nBAABk8luYGCleY1hZRHADl2FfmUQtYAanGBk5r9IA