[gentoo-user] Can't paste from selection in gtk-3 apps

[Grant Edwards]

In most X11 apps I can select some text and then paste it somewhere
else with a middle-click, or dump it to stdout with the command 'xclip
-o'.  That doesn't work for highligted text in gtk-3 apps (meld,
evince, audacious, etc.).  After selecting text in a gtk-3 app, if I
middle-click in a terminal window it does nothing and 'xclip -o' just
hangs.  Selecting text elsewhere will deselect the text in the gtk-3
app, so gtk-3 isn't _completely_ ignoring X11 clipboards/buffers.

Any ideas why gtk-3 copy/paste is broken and how to fix it?

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