From: Paul Eggert <eggert@cs.ucla.edu>
To: "Garreau, Alexandre" <galex-713@galex-713.eu>
Cc: Yuri Khan <yurivkhan@gmail.com>,
Stefan Monnier <monnier@iro.umontreal.ca>,
Emacs developers <emacs-devel@gnu.org>
Subject: Re: Why is there no `until' in elisp?
Date: Wed, 17 Oct 2018 14:35:13 -0700 [thread overview]
Message-ID: <5e6f544e-811f-fc0a-bc08-e77d601a4c4d@cs.ucla.edu> (raw)
In-Reply-To: <87d0s86zrs.fsf@portable.galex-713.eu>
On 10/17/18 2:15 PM, Garreau, Alexandre wrote:
> “while” as used in natural language does *not* mean the same thing
Yes, of course. And the same is true for "until". But I'm not objecting
to the keyword's spelling: I'm objecting to a syntax where a condition C
is placed immediately before a place where C is false. This is
confusing! When I read "C" I should be mentally thinking "OK, now C is
true". This is elementary notation design.
> It is still more natural and meaningful to say “until I’m not hungry
> anymore I eat” instead of “while I’m hungry I eat”,
Not at all. Most English-speakers would say that the latter is far more
readable.
>> the Elisp syntax for the proposed loop construct should *not* be
>> (until C S).
> And what should it be then?
Why not use cl-loop? Although it's not perfect it's good enough, and
it's better than introducing a seemingly-simple but deeply confusing syntax.
next prev parent reply other threads:[~2018-10-17 21:35 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-16 17:42 Why is there no `until' in elisp? Garreau, Alexandre
2018-10-16 19:16 ` Eric Abrahamsen
2018-10-16 19:31 ` Garreau, Alexandre
2018-10-16 20:23 ` Eric Abrahamsen
2018-10-16 23:00 ` Garreau, Alexandre
2018-10-19 15:28 ` Stefan Monnier
2018-10-16 21:28 ` Stefan Monnier
2018-10-17 0:12 ` Garreau, Alexandre
2018-10-17 2:04 ` Stefan Monnier
2018-10-17 9:14 ` Garreau, Alexandre
2018-10-17 15:06 ` Stefan Monnier
2018-10-17 16:51 ` Garreau, Alexandre
2018-10-19 15:34 ` Stefan Monnier
2018-10-19 18:08 ` Garreau, Alexandre
2018-10-17 8:04 ` Yuri Khan
2018-10-17 9:23 ` Garreau, Alexandre
2018-10-17 9:46 ` Yuri Khan
2018-10-17 11:06 ` Garreau, Alexandre
2018-10-17 17:50 ` Paul Eggert
2018-10-17 21:15 ` Garreau, Alexandre
2018-10-17 21:35 ` Paul Eggert [this message]
2018-10-17 21:49 ` Garreau, Alexandre
2018-10-17 22:33 ` Paul Eggert
2018-10-17 22:54 ` Garreau, Alexandre
2018-10-17 12:41 ` Elias Mårtenson
2018-10-17 15:03 ` Stefan Monnier
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=5e6f544e-811f-fc0a-bc08-e77d601a4c4d@cs.ucla.edu \
--to=eggert@cs.ucla.edu \
--cc=emacs-devel@gnu.org \
--cc=galex-713@galex-713.eu \
--cc=monnier@iro.umontreal.ca \
--cc=yurivkhan@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this external index
https://git.savannah.gnu.org/cgit/emacs.git
https://git.savannah.gnu.org/cgit/emacs/org-mode.git
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.