do with f, g = io.open("src.txt","r"), io.open("dst.txt",w")
for l in f:lines() do
...
g:write(l)
end
end
(Probably with a different syntax...)
I've been using it in metalua for a while (syntax "with <var_list> = <values_list> do <scoped_statements> end") for some time, with the convention that the protected variables must have a ":close()" disposal method, and I'm pretty happy with it.
