bug#27091: Request: Toggle scroll bar on each window separately

[Alex]

It would be nice if one could enable/disable scroll bars on a per-window
basis.

The new side windows are good examples of windows in which one may not
want a scroll bar. They may be used for persistent info that doesn't
take up enough vertical space to warrant a scroll bar, and may look odd
with a scroll bar.

It seems unlikely that this is feasible, but since I couldn't find other
bug reports relating to this I felt it was worth it to ask.