From: Akib Azmain Turja via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
To: Eli Zaretskii <eliz@gnu.org>
Cc: 59963@debbugs.gnu.org
Subject: bug#59963: 29.0.50; 'window-max-chars-per-line' doesn't always work on GUI without fringe
Date: Sun, 11 Dec 2022 20:50:13 +0600 [thread overview]
Message-ID: <87tu22c7ve.fsf@disroot.org> (raw)
In-Reply-To: <83sfhmt30p.fsf@gnu.org> (Eli Zaretskii's message of "Sun, 11 Dec 2022 16:43:02 +0200")
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Eli Zaretskii <eliz@gnu.org> writes:
>> Date: Sun, 11 Dec 2022 17:13:41 +0600
>> From: Akib Azmain Turja via "Bug reports for GNU Emacs,
>> the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
>>
>> 'window-max-chars-per-line' doesn't always work on GUI when fringe width
>> is set to zero. Although it returns seemingly correct answer, actually
>> writing that characters results in the continuation/truncation glyph to
>> appear, decreasing the text area width.
>>
>> I don't know precisely what condition needs to be meet for trigger the
>> bug. But I think this is triggered when the width of the text area of
>> window in character is a fraction. For example, my window is 1366px
>> width, each character takes 8px; so my window is 170.75 characters
>> width, and this triggers the bug.
>>
>> This bug affects Term, Eat, Eat in Eshell, Coterm in Shell mode, Vterm,
>> and possibly any other Emacs terminal emulator.
>>
>> Reproduction steps:
>>
>> 1. Run the command 'emacs -nw -Q' in any of the terminal emulators
>> listed above.
>> 2. Remove fringes with 'M-: (set-window-fringes nil 0 0)'.
>> 3. To make the bug is even more clear, enable 'visual-line-mode'.
>> 4. If everything seem to be OK, resize the window.
>
> I tried reproducing the problem, but couldn't:
> window-max-chars-per-line returns a value correctly truncated to the
> number of fully visible characters that can be shown on the line,
> minus the continuation/truncation glyph if there should be one.
I forgot to mention, probably you need to set 'window-resize-pixelwise'
to t to get the correct width of reproducing the bug.
--
Akib Azmain Turja, GPG key: 70018CE5819F17A3BBA666AFE74F0EFA922AE7F5
Fediverse: akib@hostux.social
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next prev parent reply other threads:[~2022-12-11 14:50 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-11 11:13 bug#59963: 29.0.50; 'window-max-chars-per-line' doesn't always work on GUI without fringe Akib Azmain Turja via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-12-11 14:43 ` Eli Zaretskii
2022-12-11 14:50 ` Akib Azmain Turja via Bug reports for GNU Emacs, the Swiss army knife of text editors [this message]
[not found] ` <87o7sac78t.fsf@disroot.org>
2022-12-11 15:21 ` Akib Azmain Turja via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-12-11 16:14 ` Eli Zaretskii
2022-12-12 8:18 ` martin rudalics
2022-12-12 13:10 ` Eli Zaretskii
2022-12-12 16:50 ` martin rudalics
2022-12-14 15:21 ` Eli Zaretskii
2022-12-15 15:53 ` Akib Azmain Turja via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-12-17 12:05 ` Eli Zaretskii
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