GNU bug report logs - #15886
24.3.50; Incorrect window-text-height with non-zero line-spacing

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Robert Dallas Gray <mail <at> robertdallasgray.com>
Cc: 15886 <at> debbugs.gnu.org
Subject: bug#15886: 24.3.50; Incorrect window-text-height with non-zero line-spacing
Date: Wed, 13 Nov 2013 23:16:22 +0200

> From: Robert Dallas Gray <mail <at> robertdallasgray.com>
> Date: Wed, 13 Nov 2013 20:55:20 +0000
> Cc: 15886 <at> debbugs.gnu.org
> 
> Well, it's not my library, but the reason it fails (in my setup, where I have line-spacing set to 2), is that it tries to set the height of the minibuffer using 'set-window-text-height' -- which, in my setup, sets the height incorrectly (the bottom of the minibuffer is obscured). I note that 'set-window-text-height' uses 'window-text-height' 

The argument passed to 'set-window-text-height' should be scaled by
the ratio of the values returned by 'frame-char-height' and
'default-line-height'.  (By default, this ratio is 1, but in your case
it will be different.)  The result of scaling should then be rounded
up to the nearest integer.

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