Sortable: catching sort within same sortable (in light of 'remove' and 'receive')

Sortable: catching sort within same sortable (in light of 'remove' and 'receive')


Removing an item from a sortable is caught by 'remove', and adding an
item to a sortable is caught by 'receive', but I'm wondering -- in
light of these two recent additions -- if there's a way to catch
movement within the same sortable?
I know there's 'update', but that also fires when items are removed
and received, and I can't figure out a way to filter out such actions.
Is this just a result of my brain being fried from thinking about this
too long, or is this a legitimate missing ability? Thanks for any
help!
Justin