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From: Michael Heerdegen <michael_heerdegen@web.de>
To: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: emacs-devel@gnu.org
Subject: Re: pcase: Semantics of atom QPATS
Date: Mon, 11 Jun 2018 22:53:58 +0200	[thread overview]
Message-ID: <87a7s111uh.fsf@web.de> (raw)
In-Reply-To: <jwvwov5jurg.fsf-monnier+gmane.emacs.devel@gnu.org> (Stefan Monnier's message of "Mon, 11 Jun 2018 10:09:37 -0400")

Stefan Monnier <monnier@iro.umontreal.ca> writes:

> [ It's an `equal` test we want, not `eq`.  ]

Of course - that was a typo.

> The issue is rather that not all types might want an `equal` test.
> E.g. we could accept patterns like
>
>     `#s(hash-table (data ,key1 ,val1))
>
> Which is why I prefer signaling an error: it lets us extend the
> semantics of ` without any fear of breaking backward compatibility.

Ah, makes sense.


Thanks,

Michael.



  parent reply	other threads:[~2018-06-11 20:53 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-06-10  0:40 pcase: Semantics of atom QPATS Michael Heerdegen
2018-06-11 14:09 ` Stefan Monnier
2018-06-11 14:45   ` Drew Adams
2018-06-11 15:24     ` Stefan Monnier
2018-06-11 20:53   ` Michael Heerdegen [this message]
2018-06-13  3:41   ` Michael Heerdegen
2018-06-13 12:52     ` Stefan Monnier
2018-06-16  4:03       ` Michael Heerdegen
2018-06-16  6:57         ` Eli Zaretskii
2018-06-16  7:32           ` Michael Heerdegen
2018-06-16  7:49             ` Eli Zaretskii
2018-06-17 13:35               ` Michael Heerdegen
2018-06-16 13:42             ` Noam Postavsky
2018-06-16 12:57           ` Stefan Monnier

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