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From: Ihor Radchenko <yantar92@gmail.com>
To: Eli Zaretskii <eliz@gnu.org>
Cc: 51766@debbugs.gnu.org, monnier@iro.umontreal.ca
Subject: bug#51766: string-pixel-width limitations (was: bug#51766: 29.0.50; Return value of buffer-chars-modified-tick changes when buffer text is not yet changed before inserting a character for non-latin input methods)
Date: Tue, 21 Jun 2022 12:13:09 +0800	[thread overview]
Message-ID: <8735fyslgq.fsf@localhost> (raw)
In-Reply-To: <838rpvpns3.fsf@gnu.org>

Eli Zaretskii <eliz@gnu.org> writes:

>> valign relies on disabling modification hooks because it is otherwise
>> difficult to figure out pixel width of a string in current buffer:
>> https://github.com/casouri/valign/issues/30
>
> That discussion is very short and lacking in detail, but up front, why
> doesn't valign use the primitives we provide for determining the pixel
> width of a string?

Because string width in different buffers may be different depending on
the fontification, frame font size, face remapping,
wrap-prefix/line-prefix string properties (AFAIK, the built-in
string-pixel-width will return incorrect value on string with such
properties), invisibility specs in the buffer, line numbers mode, etc
We have implemented a number of workarounds in org-string-width on main,
but I am not 100% sure that I covered all the edge cases.

The most accurate way to measure the real string width inside current
buffer is actually inserting it and requesting the measurement.

Best,
Ihor





  reply	other threads:[~2022-06-21  4:13 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-11 13:56 bug#51766: 29.0.50; Return value of buffer-chars-modified-tick changes when buffer text is not yet changed before inserting a character for non-latin input methods Ihor Radchenko
2021-11-11 15:19 ` Eli Zaretskii
2021-11-11 15:50   ` Ihor Radchenko
2021-11-11 17:35     ` Eli Zaretskii
2021-11-12 12:06       ` Ihor Radchenko
2021-11-12 12:15         ` Eli Zaretskii
2021-11-12 12:53           ` Ihor Radchenko
2021-11-12 13:09             ` Eli Zaretskii
2021-11-12 13:39               ` Ihor Radchenko
2021-11-12 15:17                 ` Eli Zaretskii
2021-11-13  9:10                   ` Ihor Radchenko
2021-11-13 10:11                     ` Eli Zaretskii
2021-11-13 11:29                       ` Ihor Radchenko
2021-11-13 13:38                         ` Eli Zaretskii
2021-11-13 14:43                           ` Ihor Radchenko
2021-11-13 15:24                             ` Eli Zaretskii
2022-06-17  2:54                     ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-06-17  5:36                       ` Eli Zaretskii
2022-06-17 13:16                         ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-06-17 10:05                       ` Ihor Radchenko
2022-06-17 10:50                         ` Eli Zaretskii
2022-06-21  4:13                           ` Ihor Radchenko [this message]
2022-06-21 10:16                             ` bug#51766: string-pixel-width limitations (was: bug#51766: 29.0.50; Return value of buffer-chars-modified-tick changes when buffer text is not yet changed before inserting a character for non-latin input methods) Eli Zaretskii
2022-06-21 11:00                               ` Ihor Radchenko
2022-06-21 12:17                                 ` Eli Zaretskii
2022-06-21 12:39                                   ` Ihor Radchenko
2022-06-21 12:47                                     ` Eli Zaretskii
2022-06-21 13:03                                       ` Ihor Radchenko
2022-06-22 23:49                                         ` bug#51766: string-pixel-width limitations Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-06-17 13:28                         ` bug#51766: 29.0.50; Return value of buffer-chars-modified-tick changes when buffer text is not yet changed before inserting a character for non-latin input methods Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-06-21  4:14                           ` Ihor Radchenko

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