GNU bug report logs - #18195
24.3.92; window-screen-lines is not accurate

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From: martin rudalics <rudalics <at> gmx.at>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 18195 <at> debbugs.gnu.org, dgutov <at> yandex.ru
Subject: bug#18195: 24.3.92; window-screen-lines is not accurate
Date: Wed, 06 Aug 2014 11:41:26 +0200

>> This would have to be done on the Lisp level by selecting some font
>> before calculating the size of the overlay.
>
> Which font would you select?  I'm talking about a situation where the
> text over which the candidate list will be popped uses several
> different fonts, and so each line of the buffer text has a different
> height.

I would pop up that list in a temporary buffer and run
`window-text-pixel-size' over it.

>> But I have problems with the attached patch.  If I invoke
>> `window-text-pixel-size' with a different buffer than that displayed
>> in the window I get an arguments out of range error.  Any ideas?
>
> You switched the current buffer, but not the buffer pointed to by
> w->contents.

That was the problem, indeed.

Thanks, martin

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