Version 2. Same change but rebased after Ron's improvements. Fixes bug
where if you open a read only file, you can't save it as a different
filename.
function old new delta
colon 3160 3162 +2
Signed-off-by: Alison Winters <alisonatwork@outlook.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>