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Alan Watson scripsit:At least one Scheme (Kawa) has a read syntax for the EOF object.So does Chicken, namely the token #!eof. And sure enough, if you type that into the REPL, the Chicken interpreter terminates.
In Kawa (I don't know about Chicken) it a bit more subtle: If the interpreter reads a #!eof, then it stops. However, a #!eof nested inside a list, say, does not terminate the interpreter. Thus you can write: '#eof or even: (let ((r (read))) (if (eq? r #!eof) "saw eof!")) -- --Per Bothner per@xxxxxxxxxxx http://per.bothner.com/