Re: bug#9782: 24.0.90; move-to-window-line not taking header line into account

[Dmitry Gutov <dgutov@yandex.ru>]

On 05.05.2013 6:47, Eli Zaretskii wrote:
>> From: Dmitry Gutov <dgutov@yandex.ru>
>> Cc: eliz@gnu.org
>> Date: Sun, 05 May 2013 01:12:52 +0400
>>
>> What do you suggest would be a better way to get the window row of a
>> buffer position, save that value, and then move to that row later?
>>
>> Currently, company calls (cdr (posn-actual-col-row posn)) to retrieve
>> the row, and `move-to-window-line' to get to it.
>>
>> Simply adjusting the row number for presence of `header-line-format'
>> won't do, because company strives to support Emacs 23 (and maybe even
>> 22), and `post-actual-col-row' behavior was different before the
>> revision 106022.
>
> Why is that a problem to have special code for specific Emacs
> versions?

It's ugly, for one thing. If you don't have any better suggestions, I'll 
do that, I guess.

But it's a seemingly reasonable piece of code, it worked, and your 
change made it break in some peculiar special case important to some 
users. That might imply that the code doesn't make sense on some higher 
level.

So I thought you could suggest how that code could be written 
better/faster/stronger instead.