Re: Multiple, different, %merge of a token sequence

[Paul Eggert]

"Joel E. Denny" <address@hidden> writes:

> One characteristic of the underlying problem is that Bison-generated 
> parsers are not careful about how they merge parse trees.

This all sounds vaguely familiar.  Have you read Scott et al, where
they talk about the bugs in Tomita's original algorithm?  It might be
worth a look-see, if only to catch similar bugs in Bison's GLR
implementation.

http://www.cs.rhul.ac.uk/research/languages/publications/tomita_style_1.ps