Re: Mysterious fontification/C++ context issue - Patch for beginning-of-defun-raw.

[martin rudalics]

> It might be possible to construct a "last known defun start position"
> cache variable living in scan_list, so that back_comment can use that
> instead of BOB.  But I don't know how desirable or general such a fix
> is.

Hmmm... It will work iff two assumptions apply:

(1) You're always within one and the same defun.  For a sequence of
short defuns each containing one comment it will fail because every
defun has a lower starting position.

(2) You have to invalidate the cache after each buffer change.