msgstore: ensure selection when calling sort

When using notmuch and changing labels, there is no reselection logic as
there is when using a :mv command for other backends. This results in
any label change that removes the message from the current query in
having no selection. Add some simple reselection logic in the Sort
callback so any call to Sort (which will refresh the message list)
ensures the previously selected message is still selected, and if it
isn't in the store anymore we select the same index of message as was
previously selected.

Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Tested-by: Inwit <inwit@sindominio.net>
Acked-by: Robin Jarry <robin@jarry.cc>

0 files changed, 0 insertions, 0 deletions