smart edit on multi-line text. Show a single line?

[jtorjo]

Right now, when a cell has multi-line text, the smart edit will show all text as multiline.

This is a bit weird, since the arrows (left/right) now work in a weird fashion. This is because i remember selection start as an index (not caring about any line index), thus moving from one cell above or below will look weird.

Also, when being at beginning of 3rd line, for instance, doing arrow-left will move to end of second line - which looks pretty unexpected.

I have to think about implementing this in a straightforward fashion.