Index error occurs when trying to type on line 2

[aaxu]

Open any file and try to type on the 2nd line in the document. An index error should occur and the program will crash.

[aaxu]

Seems to be caused by parse() function in parser.py. if beginRow = 1, then you decrement it and the line
self.parserNodes = self.parserNodes[:self.rows[beginRow]] sets self.parserNodes to an empty list, but you don't check for this condition in __buildGrammarList. I'll leave this up to you for now since I don't want to mess up your implementation, since I don't fully understand how it works yet.

[dschuyler]

Thanks for the report!