GNU bug report logs - #51590
follow-mode is broken with header-line and tab-line

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From: martin rudalics <rudalics <at> gmx.at>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: acm <at> muc.de, 51590 <at> debbugs.gnu.org, juri <at> linkov.net
Subject: bug#51590: follow-mode is broken with header-line and tab-line
Date: Mon, 8 Nov 2021 18:32:20 +0100

[Message part 1 (text/plain, inline)]

> (posn-area (posn-at-x-y (1- (window-pixel-width)) 0))
>
> currently gives 'nil' regardless of whether it's done with a header or
> tab line and
>
> (posn-area (posn-at-x-y
>          (1- (window-pixel-width))
>          (1- (window-pixel-height))))
>
> gives 'nil' on the mode line.  Only when I remove _both_ fringes and the
> vertical scroll bar I get the expected results.  This _is_ a bug and we
> should fix it.

I think the attached patch should fix that modulo some ">=" and "<"
glitches.

martin

[posn-at-x-y.diff (text/x-patch, attachment)]

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