bug#26338: 26.0.50; Collect all matches for REGEXP in current buffer

[Drew Adams <drew.adams@oracle.com>]

> > Or an addition to cl-loop that would allow doing something like
> >
> >    (cl-loop for m being the matches of "foo\\|bar"
> >             do ...)
> >
> > Then you could easily 'collect m' to get the list of matches if you want
> > that.
>
> Your proposals looks nice to me ;-)

(Caveat: I have not been following this thread.)

I think that `cl-loop' should be as close to Common Lisp `loop'
as we can reasonably make it.  We should _not_ be adding other
features to it or changing its behavior away from what it is
supposedly emulating.

If you want, create a _different_ macro that is Emacs-specific,
with whatever behavior you want.  Call it whatever you want
that will not be confused with Common Lisp emulation.

Please keep `cl-' for Common Lisp emulation.  We've already
seen more than enough tampering with this - people adding
their favorite thing to the `cl-' namespace.  Not good.