bug#16691: 24.3.50; emacs_backtrace.txt

[Lars Ingebrigtsen]

Eli Zaretskii <eliz@gnu.org> writes:

>> Date: Mon, 10 Feb 2014 19:35:25 +0100
>> From: martin rudalics <rudalics@gmx.at>
>> CC: lekktu@gmail.com, drew.adams@oracle.com, 16691@debbugs.gnu.org
>> 
>>  > If you meant row->y, then it is used in many different places,
>>  > including the display back-end,
>> 
>> Where is the display back-end?  If it's update_window
>
> It is _called_ by update_window.  In update_text_area, you will see
> the calls to rif->write_glyphs, which eventually calls the back-end
> (xterm.c, w32term.c, term.c, etc.).
>
>> we there set
>> 
>>        yb = window_text_bottom_y (w);
>> 
>> and then
>> 
>>        mode_line_row->y = yb;
>> 
>> so any prior notion of that row's y is lost.  And for the header line we
>> do
>> 
>>        header_line_row->y = 0;
>> 
>> But this still doesn't use row->y.  Where is the backend that uses
>> row->y to determine where on the screen to draw that row?
>
> Are you talking only about the mode line and the header line?  If so,
> then yes, those rows don't need the y coordinate, as they "know" where
> it is in advance.
>
> I thought you were asking a more general question about row->x and
> row->y.

It's unclear what the situation in this bug report is, or who is waiting
for more info from whom.  :-)  Is this still an issue?

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