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bug#41537: 26.3; window-body-width wrong return value when display-line-
From: |
Eli Zaretskii |
Subject: |
bug#41537: 26.3; window-body-width wrong return value when display-line-numbers-mode is on |
Date: |
Tue, 26 May 2020 18:25:33 +0300 |
tags 41537 notabug
thanks
> From: "Matsievskiy S.V." <seregaxvm.main@gmail.com>
> Date: Tue, 26 May 2020 13:50:38 +0300
>
> `window-body-width` and `window-width` return wrong numbers when
> `display-line-numbers-mode` is on.
>
> For example:
> ```emacs-lisp
> (message (format "Width without line numbers: %d" (window-body-width)))
> (display-line-numbers-mode 1)
> (message (format "Width with line numbers: %d" (window-body-width)))
> ```
>
> return these lines:
> ```
> Width without line numbers: 209
> Width with line numbers: 209
> ```
>
> This is obviously wrong since line numbers take some window space.
This is not wrong, since these functions measure the body without the
line numbers. This is not a bug, but the intended behavior.
> This breaks some packages that rely on `window-body-width` and
> `window-width` to align strings.
Those packages should adapt to display-line-numbers-mode by taking
into account the value returned by line-number-display-width.