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bug#6956: 24.0.50; pasting mouse selection in other session pastes only

From: Eli Zaretskii
Subject: bug#6956: 24.0.50; pasting mouse selection in other session pastes only first word
Date: Sat, 04 Sep 2010 10:18:28 +0300

> Date: Wed, 01 Sep 2010 17:38:31 +0300
> From: Eli Zaretskii <address@hidden>
> Cc: address@hidden


I really need feedback for this, even if the feedback is that this is
specific to MS-Windows and should therefore be fixed by Windows-specific

(FWIW, I think the problem is common to Windows and X alike.)

> > From: Chong Yidong <address@hidden>
> > Cc: Drew Adams <address@hidden>, address@hidden
> > Date: Tue, 31 Aug 2010 14:13:30 -0400
> > 
> > Eli Zaretskii <address@hidden> writes:
> > 
> > >> Select some text (several words) with the mouse using double-click
> > >> mouse-1 on one word then mouse-3 on a later word in the text.
> > >
> > > Does this constitute a "mouse drag"?  Can someone please tell what
> > > happens on X with the recipe in this bug report?
> > 
> > Yes, this follows the rule that if the region is highlighted, the
> > primary selection is set.  On X, if you double-mouse-1 on a word and
> > extend the region with mouse-3, you can use mouse-2 to paste the entire
> > selection into another application.
> The issue here is that mouse-drag-copy-region is advertised to copy to
> the kill-ring regions which are highlighted by dragging the mouse.
> But mouse-drag-copy-region only affects mouse-drag-region (via
> mouse-drag-track), which is bound to mouse-1.  Mouse-3, OTOH, is bound
> to mouse-save-then-kill, which is not affected at all by
> mouse-drag-copy-region.
> So when Drew double-clicks mouse-1, the highlighted first word is
> indeed copied into the kill ring (and winds up in the clipboard), but
> extending the region with mouse-3 doesn't copy the extended region.
> What I think happens on X under mouse-drag-copy-region is that the
> first word is copied into the clipboard, while the extended region is
> copied to the PRIMARY selection by the code in command_loop_1 which
> catches active regions.  Can you please verify this?
> If my guess is correct, then I think this is a bug: we should copy the
> whole region to the kill-ring when mouse-drag-copy-region is non-nil.
> That is, if extending the region with mouse-3 as described in this
> report indeed constitutes a "mouse drag".

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