Ticket #7098: josm-multline.png

This is josm-latest r4620. Here's a combination of two screenshots to show what I mean: in the upper one, I've double clicked the value and can edit a string that does not show that it's more than a string. It does't matter if the separating character is a bit wider than a regular space, to a user it looks just like a space, and the user can not know how to enter such character, except through the separate modify dialog (by adding a line there).