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From: Ihor Radchenko <yantar92@gmail.com>
To: "N. Jackson" <nljlistbox2@gmail.com>
Cc: emacs-orgmode@gnu.org
Subject: Re: [BUG] Off-by-one error in width of Agenda window?
Date: Wed, 20 Apr 2022 12:01:49 +0800	[thread overview]
Message-ID: <87o80wz9le.fsf@localhost> (raw)
In-Reply-To: <87czhdqi9p.fsf_-_@moondust.localdomain>

"N. Jackson" <nljlistbox2@gmail.com> writes:

> It turns out there is already an Emacs bug for this (Bug 19395:
> Setting left fringe to 0 messes up window-width
> (https://debbugs.gnu.org/cgi/bugreport.cgi?bug=19395)).
>
> My understanding of the discussion is that the bug is caused by
> window-width including in its return value the width of the column
> reserved for the continuation glyph (which column exists when one or
> both of the fringes is/are turned off), so window-width over-reports
> the available width of the window in this case.

Thanks a lot for the detailed analysis!

> The bug hasn't been closed, but IIUC it has been "fixed" by changing
> the documentation of window-width to indicate the limitation. The
> latter part of the bug thread is a discussion and development of the
> function window-max-chars-per-line.
>
> It seems that Org maybe should be using window-max-chars-per-line
> rather than window-width.
>
> [Unfortunately w-m-c-p-l is not a drop in replacement for
> window-width; it doesn't just fix the continuation glyph column
> "bug", but it also adds additional functionality and has a different
> signature.]

Could you elaborate why window-max-chars-per-line cannot be used instead
of window-width by Org? It appears to be strictly more accurate.

Best,
Ihor


  reply	other threads:[~2022-04-20  4:01 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-18 13:10 [BUG] Off-by-one error in width of Agenda window? [9.5.2 (release_9.5.2-25-gaf6f12 @ /data/installs/snapshots/emacs-28.1/lisp/org/)] N. Jackson
2022-04-18 13:39 ` Ihor Radchenko
2022-04-18 19:06   ` N. Jackson
2022-04-19  3:16     ` Ihor Radchenko
2022-04-19 14:06       ` [BUG] Off-by-one error in width of Agenda window? N. Jackson
2022-04-20  4:01         ` Ihor Radchenko [this message]
2022-04-20 10:07           ` N. Jackson
2022-04-21  5:25             ` [PATCH] org-agenda: Use `window-max-chars-per-line' instead of `window-width' Ihor Radchenko
2022-04-21  7:16               ` N. Jackson
2022-04-21  7:56                 ` N. Jackson
2022-04-22  5:58                   ` [PATCH v2] org-agenda: Use `window-max-chars-per-line' to calculate max text width Ihor Radchenko
2022-04-22  8:42                     ` N. Jackson
2022-04-22  9:27                       ` Ihor Radchenko
2022-04-22 15:46                         ` N. Jackson
2022-04-24  7:04                           ` Ihor Radchenko
2022-04-24 11:55                             ` Thank you " N. Jackson
2022-04-18 14:30 ` [BUG] Off-by-one error in width of Agenda window? [9.5.2 (release_9.5.2-25-gaf6f12 @ /data/installs/snapshots/emacs-28.1/lisp/org/)] Tory S. Anderson

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