advanced preferences does not make multi-line values obvious

[alv]

In the advanced preferences, most values are editable as such in the list; some have "multiple values" separated by a "," or a ";".

Others (at least relation.nameOrder) require the values to be in an array, and there is no way to tell them apart from conventional values in the list. Only if you select a preference tag and click "modify" button at the bottom, you see that the values are on separate lines - in the tag list such values look like the values are separated by a " ", when in fact it's some other character. At a minimum double clicking the value in the "big list" should open that dialog, if the tag already has such values.

[bastiK]

Doesn't apply to latest version.

[alv]

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).

[skyper]

preferences changed.

A list is in [] brackets and comma separated.

r5086