Wrong relation position summary in selection view

[mdk]

In the lower part of the selection view are the relations displayed, the selected objects belongs to. If more then one object of the same relation is selected, the "Position" column show a summary like "1,5" or "2-4".

The problem is, that if you select a combination of range and single position, the position summary is wrong.

Example: select position 1, 2 and 4 of a relation. The result is "1,2-4" instead of expected "1-2,4" (or "1,2,4")

[simon04]

In [4663/josm]:

fix #7141 - wrong relation position summary in selection view