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From: Eli Zaretskii <eliz@gnu.org>
To: "Johannes Grødem" <fjas@grdm.no>
Cc: 54591@debbugs.gnu.org
Subject: bug#54591: 29.0.50; sqlite-select returns blob result as multibyte string
Date: Sat, 02 Apr 2022 09:52:31 +0300	[thread overview]
Message-ID: <83lewo3rkg.fsf@gnu.org> (raw)
In-Reply-To: <87ilrsro30.fsf@flokut.localdomain> (message from Johannes Grødem on Sat, 02 Apr 2022 08:33:55 +0200)

> From: Johannes Grødem <fjas@grdm.no>
> Date: Sat, 02 Apr 2022 08:33:55 +0200
> 
> > Does SQLite TEXT allow the superset of UTF-8 encoding Emacs uses
> > internally to store characters that are not in Unicode? If it does, we
> > could indeed assume that any BLOB is binary data and not attempt
> > encoding/decoding it.
> 
> SQLite documentation says this...
> 
>   TEXT. The value is a text string, stored using the database encoding
>   (UTF-8, UTF-16BE or UTF-16LE).
> 
> ...but it's still possible to store byte sequences that are not legal
> Unicode in there. This breaks the mentioned Python SQLite3 API, and
> possibly others, so maybe not great if someone wants to read tables from
> something else than Emacs.

This probably means we should reject text with raw bytes or characters
whose codepoints are beyond #x10FFFF, and document that those should
be encoded manually and stored as BLOBs.

Thanks.





  reply	other threads:[~2022-04-02  6:52 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-03-27  5:49 bug#54591: 29.0.50; sqlite-select returns blob result as multibyte string Yuan Fu
2022-03-27  6:40 ` Eli Zaretskii
2022-03-27 12:04   ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-03-27 14:56     ` Eli Zaretskii
2022-03-29 14:38   ` Lars Ingebrigtsen
2022-03-29 15:38     ` Eli Zaretskii
2022-03-31 11:54       ` Lars Ingebrigtsen
2022-04-01 18:34         ` Johannes Grødem
2022-04-02  5:31           ` Eli Zaretskii
2022-04-02  6:33             ` Johannes Grødem
2022-04-02  6:52               ` Eli Zaretskii [this message]
2022-04-02 12:59           ` Lars Ingebrigtsen
2022-04-02 13:51             ` Eli Zaretskii
2022-04-02 13:59               ` Lars Ingebrigtsen
2022-04-02 14:22                 ` Eli Zaretskii
2022-04-02 14:38                   ` Lars Ingebrigtsen
2022-04-02 15:26                     ` Eli Zaretskii
2022-04-02 15:28                       ` Lars Ingebrigtsen
2022-04-02 15:40                         ` Lars Ingebrigtsen
2022-04-03 10:42                           ` Rudolf Schlatte
2022-04-03 11:43                             ` Lars Ingebrigtsen
2022-04-02 14:06           ` Lars Ingebrigtsen
2022-04-28 12:58             ` Lars Ingebrigtsen
2022-04-29  4:59         ` Yuan Fu
2022-04-29 10:04           ` Lars Ingebrigtsen
2022-04-30  5:27             ` Yuan Fu

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