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From: Stefan Monnier <monnier@iro.umontreal.ca>
To: emacs-devel@gnu.org
Cc: Eli Zaretskii <eliz@gnu.org>
Subject: Re: [Emacs-diffs] emacs-25 d7a93ef: Minor improvements to 'pcase' documentation
Date: Fri, 29 Jan 2016 09:14:11 -0500	[thread overview]
Message-ID: <jwvd1skxyr2.fsf-monnier+emacsdiffs@gnu.org> (raw)
In-Reply-To: <E1aP5Zi-00006V-7V@vcs.savannah.gnu.org> (Eli Zaretskii's message of "Fri, 29 Jan 2016 09:42:42 +0000")

> +@c FIXME: There should be an example here showing how a 'pcase' that
> +@c uses QPatterns can be rewritten using UPatterns.

For example:

   `(k . ,v)

macro-expands (via (funcall (get '\` 'pcase-macroexpander) '(k . ,v))) to:

   (funcall (get '\` 'pcase-macroexpander) '(k . ,v))
   =>
   (and (pred consp) (app car `k) (app cdr `,v))
   =>
   (and (pred consp) (app car 'k) (app cdr v))


-- Stefan



       reply	other threads:[~2016-01-29 14:14 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20160129094242.352.60019@vcs.savannah.gnu.org>
     [not found] ` <E1aP5Zi-00006V-7V@vcs.savannah.gnu.org>
2016-01-29 14:14   ` Stefan Monnier [this message]
2016-01-29 15:38     ` [Emacs-diffs] emacs-25 d7a93ef: Minor improvements to 'pcase' documentation Eli Zaretskii

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