[Fab-user] non magical “Lazy” string interp olation ?

[Jorge Vargas]

I find myself doing this type of thing a lot.

"%(some_var_from_env)s % env

in my small fabfile I have it in append, sudo, run, webbrowser.open,
print as well as plain old strings.

So I was wondering why not make it part of the commands?

a simple replacement in run, that will expand all variable will save
1000s of lines doing it on the outside.

PS: sorry for all the emails, I'm just really exited about the
potential I have here and I want to get this tool to a point that I
can use it for day to day work :)