Re: generic buffer parsing cache data

[Richard Stallman]

    For instance, something like this:

        Function: put-cache-data key data &optional pos
        ...

This is a clean interface for a totally new feature, but is it a
feasible feature?  Does anyone know of an efficient algorithm to
implemented the proposed feature?  It seems like a hard problem to me.

Thus, I would suggest looking for a way to extend the existing
feature, one that is straightforward to implement.  The challenge here
is to find such an extension that would be useful in various modes to
speed up parsing.