Re: [External] : Re: Package cl is deprecated

[Hongyi Zhao]

On Sat, Jul 31, 2021 at 8:35 AM Hongyi Zhao <hongyi.zhao@gmail.com> wrote:
>
> On Fri, Jul 30, 2021 at 11:56 PM Drew Adams <drew.adams@oracle.com> wrote:
> >
> > > > Try just Isearch.  Search for `(require . cl)' (note the dot).
> > >
> > > Do you mean: `M-x isearch-forward RET (require . cl) RET'?
> >
> > `C-s (require . cl)'
>
> I tried again and it worked, as shown in the attachment.
>
> > > I tried the above command under `.emacs.d/straight/repos' directory,
> > > but it doesn't give any results.
> >
> > If cl.el[c] was loaded, then I'd expect that fact
> > to be recorded in `load-history'.  Why you're not
> > finding it there, I don't know.  If it's in fact
> > not there then I don't know why that's the case
> > either.
> >
> > > > If you have a library `foo.el' in directory
> > > > `/some/dir/somewhere/', where `foo.el' requires
> > > > library cl then you'll find a sexp such as this:
> > > >
> > > >  ("/some/dir/somewhere/foo.el"
> > > >   ...
> > > >   (require . cl)
> > > >   ...)
> > > >
> > > > You may well have loaded multiple libraries that
> > > > require cl.  You may be interested in all of them,
> > > > but the first one is likely the one that loaded
> > > > cl.el[c].
> > > >
> > > > (Searching `C-h v load-history' in *Help* is
> > > > harder, because it may split `(require 'cl)' across
> > > > two lines.)
> > >
> > > If so, the spanning line pattern should do the trick. Am I right?
> >
> > Yes. `C-M-s' for this in *Help* for `C-h v load-history'.
> >
> > (require[
> >  ]+[.][
> >  ]+cl)
>
> Thank you for showing me this pattern. TBF, it seems to me that the
> syntax of line spanning match pattern is very strange. It would be
> nice if there were some explanation for how to build this pattern.

To be more specifically, since this is a multiline match pattern, why
don't you any end-of-line metacharacter, i.e., `$' [1] in your above
pattern?

[1] https://www.emacswiki.org/emacs/RegularExpression

Regards
-- 
Assoc. Prof. Hongyi Zhao <hongyi.zhao@gmail.com>
Theory and Simulation of Materials
Hebei Vocational University of Technology and Engineering
No. 473, Quannan West Street, Xindu District, Xingtai, Hebei province