c2fc7f04a7
I can't see a reason to select the newly-created regions after splitting selected regions: I can't think of any case where you'd want the next operation to apply to both the regions, and it makes it very easy (in my experience) to trim/move/&c. both regions afterwards by mistake. However, this behaviour is desired for Mixbus, so make the selection of regions after a split of selected regions dependent on Profile->get_mixbus() for now.
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