Re: imenu fails in mode without comment-start-skip defined

[Dave Love]

Richard Stallman <address@hidden> writes:

> Maybe this is not really a possibility.  Maybe it depends on whether
> the loop scans forwards or backwards.  It would depend on what kind of
> caching features there are inside syntax-ppss, which is a question I
> don't recall the answer to.

The whole point is efficiency compared with parse-partial-sexp -- see
NEWS -- though that's not explicit in syntax.el's commentary.  I think
it should be documented in lispref with parse-partial-sexp.  It should
also be mentioned that it can clobber the match data through running
syntax-begin-function.

This is orthogonal to imenu issues.