From: Dmitry Gutov <dgutov@yandex.ru>
To: Eli Zaretskii <eliz@gnu.org>
Cc: philipk@posteo.net, tom@tromey.com, emacs-devel@gnu.org,
john@yates-sheets.org
Subject: Re: Automatic (e)tags generation and incremental updates
Date: Sat, 16 Jan 2021 05:57:21 +0200 [thread overview]
Message-ID: <8581b496-2093-42de-4e9d-deff8d4c9465@yandex.ru> (raw)
In-Reply-To: <834kjkde1z.fsf@gnu.org>
On 13.01.2021 17:58, Eli Zaretskii wrote:
>>> Almost all the identifiers are ASCII, right? So maybe optimize 99.9%
>>> of use cases by storing such tags tables in a unibyte buffer, read
>>> with insert-file-contents-literally?
>>
>> All right, and that option is probably handled well enough already by
>> the user choosing (l) in the prompt when the tags file is very big.
>
> Yes, but my idea was to do that automatically. After all, the size
> threshold beyond which we prompt the user is customizable, so it could
> be very large.
Even so, this mode of operation removes a feature. How frequently it's
used, I have no idea, but it's better to have full functionality by
default. There must be a reason why all those languages added support
for unicode chars in identifiers.
For the time being, I just disabled synchronization to disk, given that
we don't yet know how to refresh an existing file anyway.
>> My (apparently faulty) intuition was that if utf-8-emacs is the memory
>> representation of buffer text, converting it into that encoding can be
>> faster because it could be done by copying from memory rather that
>> having to do the work of recoding every character.
>
> We don't recode characters when they are valid UTF-8 sequences, but
> you forget the raw bytes: they are converted from internal multibyte
> representation to single bytes, and that requires walking the buffer
> one character at a time.
>
> IOW, utf-8-emacs is the same as utf-8 for this purpose.
So utf-8-emacs is not the same as "internal multibyte representation"?
next prev parent reply other threads:[~2021-01-16 3:57 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-14 3:36 Automatic (e)tags generation and incremental updates Dmitry Gutov
2021-01-07 3:46 ` Dmitry Gutov
2021-01-07 14:15 ` Eli Zaretskii
2021-01-07 15:56 ` Dmitry Gutov
2021-01-07 16:17 ` Stefan Kangas
2021-01-09 21:49 ` Tom Tromey
2021-01-10 13:53 ` Dmitry Gutov
2021-01-10 16:56 ` Tom Tromey
2021-01-10 19:39 ` Tom Tromey
2021-01-10 23:09 ` Dmitry Gutov
2021-01-10 23:36 ` Dmitry Gutov
2021-01-10 23:50 ` Dmitry Gutov
2021-01-11 14:56 ` Eli Zaretskii
2021-01-12 1:33 ` Dmitry Gutov
2021-01-12 4:21 ` Stefan Monnier
2021-01-12 16:59 ` Dmitry Gutov
2021-01-12 17:24 ` Stefan Monnier
2021-01-12 15:08 ` Eli Zaretskii
2021-01-12 16:48 ` Dmitry Gutov
2021-01-12 17:15 ` Eli Zaretskii
2021-01-12 17:32 ` Dmitry Gutov
2021-01-12 17:55 ` Eli Zaretskii
2021-01-12 22:26 ` Dmitry Gutov
2021-01-13 15:01 ` Eli Zaretskii
2021-01-13 15:52 ` Dmitry Gutov
2021-01-13 15:58 ` Eli Zaretskii
2021-01-16 3:57 ` Dmitry Gutov [this message]
2021-01-16 7:34 ` Eli Zaretskii
2021-01-10 16:49 ` Eli Zaretskii
2021-01-10 16:58 ` Tom Tromey
2021-01-10 17:56 ` Dmitry Gutov
2021-01-10 18:14 ` Eli Zaretskii
2021-01-10 23:13 ` Dmitry Gutov
2021-01-11 14:53 ` Eli Zaretskii
2021-01-12 1:49 ` Dmitry Gutov
2021-01-12 15:09 ` Eli Zaretskii
2021-02-18 23:26 ` Dmitry Gutov
2021-02-19 8:33 ` Eli Zaretskii
2021-02-19 14:35 ` Dmitry Gutov
2021-02-19 15:44 ` Eli Zaretskii
2021-02-20 1:35 ` Dmitry Gutov
2021-02-20 7:30 ` Eli Zaretskii
2021-02-20 20:27 ` Dmitry Gutov
2021-02-20 20:41 ` Eli Zaretskii
2021-02-20 21:05 ` Dmitry Gutov
2021-02-20 21:14 ` Dmitry Gutov
2021-02-21 19:53 ` Eli Zaretskii
2021-02-21 20:39 ` Dmitry Gutov
2021-02-22 16:08 ` Eli Zaretskii
2021-02-22 19:25 ` Dmitry Gutov
2021-02-22 19:33 ` Eli Zaretskii
2021-02-23 1:15 ` Dmitry Gutov
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