GNU bug report logs - #20258
24.5; format-time-string miscounting of multibyte characters

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Message #19 received at 20258-done <at> debbugs.gnu.org (full text, mbox):

From: Stefan Kangas <stefan <at> marxist.se>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 20258-done <at> debbugs.gnu.org, Gunnar Horrigmo <gunnar.horrigmo <at> usit.uio.no>
Subject: Re: bug#20258: 24.5;
 format-time-string miscounting of multibyte characters
Date: Mon, 30 Sep 2019 02:35:08 +0200

Eli Zaretskii <eliz <at> gnu.org> writes:

>> From: Gunnar Horrigmo <gunnar.horrigmo <at> usit.uio.no>
>> Date: Sat, 04 Apr 2015 16:33:50 +0200
>>
>>
>> As the subject says, format-time-string miscounts multibyte characters.
>> Simple example with nb_NO.utf8 locale, where ø is two bytes:
>>
>> (format-time-string "%6a" (date-to-time "Sat Apr  4 16:14:40 2015"))
>> "  lø."
>>
>> (length (format-time-string "%6a" (date-to-time "Sat Apr  4 16:14:40 2015")))
>> 5
>
> 'length' counts characters, not bytes.  If you need to count bytes,
> use 'string-bytes' instead:
>
>   (string-bytes "  lø.") => 6

I can see no bug here, only a misunderstanding about the length
function.  I'm therefore closing this bug.  If that's incorrect, please
reopen this bug report.

Best regards,
Stefan Kangas

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