Re: Emacs Mac port

[Nix]

On 16 Apr 2013, YAMAMOTO Mitsuharu stated:

>>>>>> On Tue, 16 Apr 2013 09:49:17 +0300, Eli Zaretskii <address@hidden> said:
>>> If you use a window system implementation that uses "backing store"
>>> to avoid frequent "expose", then it is difficult to produce the
>>> "expose" event intentionally by uncovering the window.
>
>> Which window systems we support don't use "backing store"?
>
> Some implementations of Xservers.  According to the manual, -bs option
> seems to turn off the backing store support.

This option does nothing nowadays, because backing store was entirely
removed from the X.org X server implementation before X server 1.5, in
2007. The idea now is that if you want the same effect you have to use a
compositing manager, which naturally provides double-buffering of
everything anyway.

> Mac does have "backing store".  I meant Xserver implementation without
> "backing store".  I vaguely remember Xvnc didn't have one and issued
> "expose" events every time a window is uncovered, but I'm not sure
> about the recent situation of Xservers.

Just use X.org and make sure your compositing manager is turned off :)

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