[Swift-devel] strcat

[Ben Clifford]

I've made some changes, uncommitted, that let you write something like 
this:

===
type file {};

(file i) p() {
app {
echo "hi" stdout=@filename(i);
}
}

file q <"volume.blah">;
file r <single_file_mapper;file=@strcat("foo", at filename(q))>;

q=p();
r=p();

===

This will create two files, once called "volume.blah" and one called 
"foovolume.blah".

The point of this is to support the use cases from Tibi and Nika that 
motivated bug 24, one of the 0.2 target features.

So now I guess I should see if this functionality is actually helpful for 
them in terms of expressing those workflows more concisely...

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