[Gmsh] Gmsh continually saving .geo files?

[D Haley]

Dear List,

I recently started to use GMSH again for some of my work. However, I am 
having some small troubles with it.

I have noticed that GMSH appears to be saving the .geo file that I am 
working on with every interaction. This is really problematic, as every 
time I make an error I have to start over again, or manually undo my 
steps (AFAIK, there is no built-in undo?).

Normally I would simply reload the file, saving whenever I am happy with 
the current program state.

Is there a way to disable this? I am using gmsh-2.8.4, installed on debian.

Thanks!