From: Drew Adams <drew.adams@oracle.com>
To: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: "'Help-Gnu-Emacs (help-gnu-emacs@gnu.org)'" <help-gnu-emacs@gnu.org>
Subject: RE: [External] : Re: Emacs 30.0 warning from `cl-pushnew' and `memql'
Date: Fri, 30 Dec 2022 22:55:07 +0000 [thread overview]
Message-ID: <SJ0PR10MB548897D714E2A3DB330ACE7AF3F09@SJ0PR10MB5488.namprd10.prod.outlook.com> (raw)
In-Reply-To: <jwv5ydsracp.fsf-monnier+emacs@gnu.org>
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> > But "very frequent", really? Any evidence that
> > that's been the case for the many users of CL
^^
Common Lisp
> > `case' since the mid-80s?
>
> The only "evidence" I have the number of such errors
> I've fixed over the years in other people's ELisp code.
Which isn't an indication of such for _CL_ `case',
i.e., in the code of _Common Lisp_ users.
Beyond being perhaps an indication that the Emacs
_doc_ for `cl-case' should be improved, it sounds
like no Elisp problem with `case' has been found.
(Well, I did mention a bug I noticed, of `cl-case'
not raising an error when CL specifies it should.)
And I guess you don't have an example of using
`pcase' to do what `case' does but somehow "simpler".
I doubt that Elisp coders are dumber than CL coders,
in general. If the former are misunderstanding the
no-quoting thing then my guess is that's due to the
lack of doc saying that keylists and their entries
aren't evaluated.
The use case of `case' is simple, yet common. We
should add it to Elisp (with no `cl-' prefix).
___
Note BTW that Common Lisp even adopted _exactly_
the same thing for `typecase' as for `case'. That
wasn't something inherited from other Lisps AFAIK.
They could have done something different, but they
chose the `case' approach, including `otherwise',
`t', and _no evaluation_ of keys:
"The TYPE that appears in each clause is a type
specifier; it is _not evaluated but is a literal_
type specifier."
Clearly they didn't see a problem with not evaling
keys, and opted for a simple syntax for a simple
use case.
https://www.cs.cmu.edu/Groups/AI/html/cltl/clm/node84.html
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next prev parent reply other threads:[~2022-12-30 22:55 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-26 20:38 Emacs 30.0 warning from `cl-pushnew' and `memql' Emanuel Berg
2022-12-27 6:56 ` Jean Louis
2022-12-27 10:28 ` Michael Heerdegen
2022-12-27 11:33 ` Emanuel Berg
2022-12-27 11:39 ` Emanuel Berg
2022-12-28 3:23 ` [External] : " Drew Adams
2022-12-28 4:23 ` Emanuel Berg
2022-12-29 22:27 ` Drew Adams
2022-12-30 22:27 ` Emanuel Berg
2022-12-30 6:30 ` tomas
2022-12-28 6:25 ` tomas
2022-12-28 11:59 ` Michael Heerdegen
2022-12-28 12:41 ` tomas
2022-12-28 12:45 ` Emanuel Berg
2022-12-28 13:19 ` Emanuel Berg
2022-12-28 14:54 ` Emanuel Berg
2022-12-29 22:31 ` Stefan Monnier via Users list for the GNU Emacs text editor
2023-01-08 4:18 ` Emanuel Berg
2023-01-08 18:54 ` Andreas Eder
2022-12-28 17:57 ` [External] : " Drew Adams
2022-12-28 18:10 ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-12-28 19:29 ` Emanuel Berg
2022-12-28 19:35 ` Drew Adams
2022-12-28 19:36 ` tomas
2022-12-28 19:24 ` Emanuel Berg
2022-12-28 17:54 ` Drew Adams
2022-12-28 18:05 ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-12-28 19:35 ` Drew Adams
2022-12-29 3:34 ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-12-29 19:06 ` Drew Adams
2022-12-29 19:45 ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-12-29 22:00 ` Drew Adams
2022-12-29 22:25 ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-12-30 7:29 ` Drew Adams
2022-12-30 18:55 ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-12-30 22:55 ` Drew Adams [this message]
2022-12-31 0:08 ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-12-31 2:45 ` Drew Adams
2022-12-31 4:53 ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-12-28 19:21 ` Emanuel Berg
2022-12-28 20:24 ` Jean Louis
2022-12-28 20:56 ` Emanuel Berg
2022-12-28 21:24 ` [External] : " Drew Adams
2022-12-28 22:47 ` Jean Louis
2022-12-28 23:48 ` Emanuel Berg
2022-12-29 6:03 ` tomas
2022-12-29 6:59 ` Emanuel Berg
2022-12-29 7:08 ` Emanuel Berg
2022-12-29 7:19 ` Emanuel Berg
2022-12-29 22:41 ` Drew Adams
2022-12-30 23:03 ` Emanuel Berg
2022-12-30 6:35 ` tomas
2022-12-29 9:18 ` Jean Louis
2022-12-29 10:04 ` Emanuel Berg
2022-12-29 10:12 ` tomas
2022-12-29 10:20 ` Emanuel Berg
2022-12-29 10:26 ` Emanuel Berg
2022-12-29 10:36 ` Michael Heerdegen
2022-12-29 14:47 ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-12-29 10:39 ` Michael Heerdegen
2022-12-28 12:44 ` Emanuel Berg
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