This is our convention.
The only exceptions are double quotes for words in comments that give
them a special meaning (though beware that these quotes are not truly
necessary most of the time) and double quotes that need to be a part
of the output string.
For various reasons I'd like a method which allows evaluation; say
log in from another machine and run "gnome-shell --repl" or something.
Also as a possible solution for the screensaver X grab issue, add
a (read/write) property "OverviewActive".
https://bugzilla.gnome.org/show_bug.cgi?id=596102
