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bug#6774: Cut and paste with C-w/mouse-2 not working?

From: Jan Djärv
Subject: bug#6774: Cut and paste with C-w/mouse-2 not working?
Date: Tue, 17 Aug 2010 10:24:16 +0200
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv: Gecko/20100713 Thunderbird/3.0.6

2010-08-17 09:17, Eli Zaretskii skrev:
Date: Tue, 17 Aug 2010 07:52:19 +0200
From: Jan Djärv<address@hidden>
Cc: address@hidden, address@hidden, address@hidden

I think we should add a hook to redisplay that gets called whenever
selection is non-zero.  Then that hook can do the right thing.

What do you mean by "selection is non-zero"?  Does it mean that region
should be highlighted during this redisplay cycle?  Or does it mean
something else?
> And when do you want the hook to be called? at the end of redisplay?
> at the beginning? in the middle?

It was said that only redisplay knows if the regions is non-empty and hightlighted. Called where it is appropriate, I haven't looked at it in detail yet. I guess at the end. The conditions are something like

1. The region is different from previous redisplay.
2. The region is not empty.
3. The region is hightlighted.

And why a hook? do we want to do in that hook anything except set some
selection, like PRIMARY?  If we only want to set a selection, we can
do that directly.

Yes, but given all the variables that can influence what to do, I just thought it better to hand it off out of redisplay.

        Jan D.

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