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From: Stefan Monnier <monnier@iro.umontreal.ca>
To: emacs-devel@gnu.org
Subject: Re: [PATCH] Raise an error when detecting old-style backquotes.
Date: Sun, 08 Oct 2017 15:14:01 -0400	[thread overview]
Message-ID: <jwvvajpbgn3.fsf-monnier+gmane.emacs.devel@gnu.org> (raw)
In-Reply-To: CAArVCkSFALZmtHGZq3Awj4-Sk-b+CAFHGVCkJ5pX9GDKn939Bw@mail.gmail.com

>> I don't think it'll make any real difference: in both cases the old code
>> won't work anymore: I'm hard pressed to think of a scenario where the
>> "subtle" behavior change is subtle enough not to be detected
>> fairly quickly.
> For example, code such as '(` foo) would change behavior.  Whether a certain
> list is nested or not is definitely subtle enough.

But this is not a complete scenario.  You'd need to give additional
context:
- why is there '(` foo) in the source code (it seems already contrived)?
- How is the result used (it's important that the result be
  used in a way which works differently but without signaling an error
  in both cases)?


        Stefan




  reply	other threads:[~2017-10-08 19:14 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-10-03 13:51 Old-style backquotes Philipp Stephani
2017-10-03 14:12 ` Paul Eggert
2017-10-03 14:17   ` [PATCH] Raise an error when detecting old-style backquotes Philipp Stephani
2017-10-03 17:43     ` Stefan Monnier
2017-10-03 18:36       ` Philipp Stephani
2017-10-03 18:52         ` Stefan Monnier
2017-10-08 16:03           ` Philipp Stephani
2017-10-08 19:14             ` Stefan Monnier [this message]
2017-10-04 14:12       ` Richard Stallman
2017-10-04 15:30         ` Stefan Monnier
2017-10-05  7:03           ` Richard Stallman
2017-10-06  4:04             ` Stefan Monnier
2017-10-06 15:17               ` Richard Stallman
2017-10-03 15:02   ` Old-style backquotes Eli Zaretskii
2017-10-08 14:58     ` Philipp Stephani
2017-10-08 16:05       ` Eli Zaretskii
2017-10-08 16:09         ` Eli Zaretskii
2017-10-08 16:25           ` Philipp Stephani
2017-10-08 16:38             ` Eli Zaretskii
2017-10-08 16:59               ` Philipp Stephani
2017-12-09 20:44                 ` Philipp Stephani
2017-12-09 20:48                   ` Alan Mackenzie
2017-12-09 20:58                     ` Philipp Stephani
2017-12-09 21:05                       ` Philipp Stephani

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