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From: Dawid Ferenczy <ferenczy AT volny DOT cz>
Subject: Re: Clearing the buffer after quitting LESS, MAN, VIM etc.
Date: Wed, 29 Jan 2014 17:28:16 +0000 (UTC)
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Christopher Faylor <cgf-use-the-mailinglist-please <at> cygwin.com> writes:

> You are not an acknowledged expert in sleep, issues, or me, so your
> opinions are irrelevant.  I don't know why you felt compelled to comment
> on this minor point but your recommendations, understanding of humor, or
> likes are really off-topic for the Cygwin mailing list.


It's nothing important to talk about I think :)

But could I ask you, if you have some spare time (I know that it's stupid 
:) I haven't got any spare time too), could you take a look on preserving 
the whole scrollback buffer, no matters how big it is, please? As I have 
described in my previous post. When I open and exit e.g. the LESS, the 
visible buffer is preserved, but when I scroll up, there is nothing. I have 
scrollback buffer set to the 9999 lines (as it is maximum in the ConEmu).

Thank you very much for your exemplary support!

-- 
 Dawid Ferenczy
 http://ferenczy.cz


> And the fix is almost perfect. It's only almost perfect, because it
> preserves the visible buffer only, not the whole scrollback buffer, which
> could be much more larger, than the window size. I can live with that, but
> could it be possible to preserve the whole scrollback buffer, no
> matters how big it is? I have a window size of 240 * 70 and scrollback
> buffer of 240 * 9999 characters.
> 
> So we need to split the buffer to the regions smaller than 16384 
characters
> (to fit buffer in a heap). Maybe it could be possible to get the
> scrollback buffer dimensions instead of the window dimensions and use
> ReadConsoleOutputWrapper in a loop (buffer_width * buffer_height / 16384
> iterations). Moreover, if the window size is bigger than 32768 characters,
> your fix will fail, because you attempt to read a region bigger than
> 16384 characters at once, I guess.
> 
> But it's interesting that when I have the window size smaller than 16384
> characters (240 * 62), the whole scrollback buffer is preserved, no
> matters how big it is.



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