From: Michael Heerdegen <michael_heerdegen@web.de>
To: 13678@debbugs.gnu.org
Subject: bug#13678: 24.2.93; pcase: mention list-like QPatterns in the doc
Date: Mon, 11 Feb 2013 14:37:48 +0100 [thread overview]
Message-ID: <87fw13dl8z.fsf@web.de> (raw)
In-Reply-To: <jwvliavzkx3.fsf-monnier+emacs@gnu.org> (Stefan Monnier's message of "Sun, 10 Feb 2013 20:43:57 -0500")
Hi Stefan,
> > Sure, `(QPAT1 . QPAT2)' also matches lists - but `(QPAT1 . QPAT2)' and
> > `(QPat1 ...QPatn)' are different forms (expressions)
>
> Actually, no, they are identical:
>
> (QPAT1 QPAT2 QPAT3) is indistinguishable from
> (QPAT1 . (QPAT2 . (QPAT3 . nil)))
>
> the equivalence between the two is imposed by the reader, long before we
> know that these things will be "patterns in a pcase" rather than
> expressions, or data in a quoted thingy, ...
Simply right, thanks. I wonder, however, if that's clear for every
user. Nonetheless, there are enough examples in
(elisp) Pattern matching case statement
that use the (QPAT1 QPAT2 QPAT3) syntax. So, I'll close this, thanks.
Regards,
Michael.
prev parent reply other threads:[~2013-02-11 13:37 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-10 17:49 bug#13678: 24.2.93; pcase: mention list-like QPatterns in the doc Michael Heerdegen
2013-02-11 1:43 ` Stefan Monnier
2013-02-11 13:37 ` Michael Heerdegen [this message]
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
List information: https://www.gnu.org/software/emacs/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=87fw13dl8z.fsf@web.de \
--to=michael_heerdegen@web.de \
--cc=13678@debbugs.gnu.org \
/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 public inbox
https://git.savannah.gnu.org/cgit/emacs.git
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).