Fix minor conditional issues in yank
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@ -653,9 +653,11 @@ class CommandDispatcher:
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elif what == 'selection':
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caret = self._current_widget().caret
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s = caret.selection()
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if not caret.has_selection() or len(s) == 0:
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if not caret.has_selection() or not s:
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message.info(self._win_id, "Nothing to yank")
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return
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else: # pragma: no cover
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raise ValueError("Invalid value {!r} for `what'.".format(what))
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if sel and utils.supports_selection():
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target = "primary selection"
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