From: Michael Heerdegen <michael_heerdegen@web.de>
To: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: jixiuf <jixiuf@qq.com>, 45619@debbugs.gnu.org
Subject: bug#45619: 28.0.50; pcase-let on MacOS doesn't work
Date: Mon, 04 Jan 2021 23:08:59 +0100 [thread overview]
Message-ID: <87wnws2w3o.fsf@web.de> (raw)
In-Reply-To: <jwvft3gtxfb.fsf-monnier+emacs@gnu.org> (Stefan Monnier's message of "Mon, 04 Jan 2021 12:41:26 -0500")
Stefan Monnier <monnier@iro.umontreal.ca> writes:
> It's messier than that: the issue is that it doesn't bind variables
> which aren't used lexically (this is needed to avoid spurious warnings
> about unused vars when the var is used in on place but not in another).
BTW, a similar issue (pitfall) I faced was that I sometimes expect that
when a variable is already bound, already the first appearance of the
symbol would be turned into an equality test.
I wonder if pcase variable bindings could be hygienic in the sense that
they would use fresh symbols internally. That would maybe make the
semantics clearer.
Michael.
next prev parent reply other threads:[~2021-01-04 22:08 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-03 7:59 bug#45619: 28.0.50; pcase-let on MacOS doesn't work jixiuf
2021-01-04 12:44 ` Michael Heerdegen
2021-01-04 15:41 ` Drew Adams
2021-01-04 17:41 ` Stefan Monnier
2021-01-04 19:50 ` Michael Heerdegen
2021-01-04 20:37 ` Stefan Monnier
2021-01-04 22:08 ` Michael Heerdegen [this message]
2021-01-05 2:06 ` Stefan Monnier
2021-01-07 11:38 ` Michael Heerdegen
2021-01-07 15:19 ` Stefan Monnier
2021-01-08 20:05 ` Michael Heerdegen
2021-01-08 22:13 ` Stefan Monnier
2022-02-12 7:46 ` Lars Ingebrigtsen
2022-02-12 14:56 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-02-12 16:30 ` Lars Ingebrigtsen
2022-02-12 17:10 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-02-12 17:21 ` Lars Ingebrigtsen
2022-02-12 22:33 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
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