Sun, 25 Jun 2000 23:46:52 +0200 wenzelm added exhausted: ('a, 'b) source -> ('a, 'a list) source;
Sun, 25 Jun 2000 23:46:39 +0200 wenzelm added state: 'a * 'b -> 'a * ('a * 'b);
Sun, 25 Jun 2000 23:46:22 +0200 wenzelm fbrk: 2 if not taken;
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