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From: Po Lu <luangruo@yahoo.com>
To: Lars Ingebrigtsen <larsi@gnus.org>
Cc: emacs-devel@gnu.org
Subject: Re: `unreadablep'
Date: Wed, 15 Dec 2021 20:22:00 +0800	[thread overview]
Message-ID: <87v8zqoy6v.fsf@yahoo.com> (raw)
In-Reply-To: <87k0g6kqmh.fsf@gnus.org> (Lars Ingebrigtsen's message of "Wed, 15 Dec 2021 13:19:02 +0100")

Lars Ingebrigtsen <larsi@gnus.org> writes:

> Po Lu <luangruo@yahoo.com> writes:
>
>> Yes, now I think the `print-unreadable-function' solution would be best;
>> we could just cause a non-local exit from within that function.

> The PRINTCHARFUN just gets a single character at a time, doesn't it?  So
> it's not at the correct level to determine whether something is
> unreadable or not...

The idea is that `print-unreadable-function' is called _with_ the object
and the printcharfun (and possibly some prin1 state, but I haven't
thought of the details yet) when prin1 encounters an unreadable object.

So if you want to error something when trying to print an unreadable
object, you can just set that to a function that throws.



  reply	other threads:[~2021-12-15 12:22 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-12-15  7:49 `unreadablep' Lars Ingebrigtsen
2021-12-15  8:19 ` `unreadablep' Po Lu
2021-12-15  8:35   ` `unreadablep' Lars Ingebrigtsen
2021-12-15  9:42     ` `unreadablep' Po Lu
2021-12-15 11:16       ` `unreadablep' Lars Ingebrigtsen
2021-12-15 11:25         ` `unreadablep' Po Lu
2021-12-15 12:19           ` `unreadablep' Lars Ingebrigtsen
2021-12-15 12:22             ` Po Lu [this message]
2021-12-15 12:35               ` `unreadablep' Lars Ingebrigtsen
2021-12-15 12:42                 ` `unreadablep' Po Lu
2021-12-15 12:44                   ` `unreadablep' Lars Ingebrigtsen
2021-12-15 12:46                     ` `unreadablep' Po Lu
2021-12-15 12:51                       ` `unreadablep' Po Lu
2021-12-15 12:58                       ` `unreadablep' Lars Ingebrigtsen
2021-12-15 12:36               ` `unreadablep' Ihor Radchenko
2021-12-15 12:37                 ` `unreadablep' Po Lu
2021-12-15 17:00     ` [External] : `unreadablep' Drew Adams
2021-12-15  8:35 ` `unreadablep' Ihor Radchenko
2021-12-15  9:51   ` `unreadablep' Po Lu
2021-12-15 10:20     ` `unreadablep' Ihor Radchenko
2021-12-15 10:21       ` `unreadablep' Ihor Radchenko
2021-12-15 10:21       ` `unreadablep' Po Lu
2021-12-15 10:36         ` `unreadablep' Ihor Radchenko
2021-12-15 10:44           ` `unreadablep' Po Lu
2021-12-15 11:12             ` `unreadablep' Ihor Radchenko
2021-12-15 11:16               ` `unreadablep' Po Lu
2021-12-15 11:39                 ` `unreadablep' Ihor Radchenko
2021-12-15 14:12 ` `unreadablep' Stefan Monnier
2021-12-16  5:48   ` `unreadablep' Lars Ingebrigtsen
2021-12-16  8:03     ` `unreadablep' Eli Zaretskii
2021-12-17  7:18       ` `unreadablep' Lars Ingebrigtsen
2021-12-16 15:35     ` `unreadablep' Qiantan Hong
2021-12-17  7:19       ` `unreadablep' Lars Ingebrigtsen
2021-12-15 15:32 ` `unreadablep' Steingold
2021-12-15 16:04   ` `unreadablep' Qiantan Hong
2021-12-15 16:09 ` `unreadablep' Steingold
2021-12-15 20:21 ` `unreadablep' Philipp Stephani

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