don't get into nested run loops if quantize is reinvoked (e.g control surface) while already in progress
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@ -5374,6 +5374,11 @@ Editor::quantize_regions (const RegionSelection& rs)
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quantize_dialog = new QuantizeDialog (*this);
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}
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if (quantize_dialog->is_mapped()) {
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/* in progress already */
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return;
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}
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quantize_dialog->present ();
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const int r = quantize_dialog->run ();
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quantize_dialog->hide ();
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