autobackup when saving?

[Ulli Horlacher <framstag rus uni-stuttgart de>]

When I save a diagram an existing one will be overwritten.
Is it possible to do autobackup, like it is done by many editors and xfig?

1) rename existing example.dia to example.dia~
2) save new example.dia

-- 
Ullrich Horlacher              Server und Virtualisierung
Rechenzentrum TIK         
Universitaet Stuttgart         E-Mail: horlacher tik uni-stuttgart de
Allmandring 30a                Tel:    ++49-711-68565868
70569 Stuttgart (Germany)      WWW:    http://www.tik.uni-stuttgart.de/
REF:<20170605100832 GA4543 rus uni-stuttgart de>