Incase our index is out-of-date and we try to load and parse a grammar that does not exist on disk, we would get a grammar_t with a “null” root rule, this would later crash when trying to use the grammar.
As a simple fix we now ensure a dummy rule always exist.
Unfortunately a printf precision specifier (‘%.*s’) can not come with a width specifier so we have to cast to int. The width specifier ‘t’ is used for ptrdiff_t.
The int → NSInteger change fixed a bug with popup menu positioning, but there was no associated warning or error. It's possible there are more such bugs that we haven't found yet!
