I wasn't going to write this, but I couldn't help myself. Had to see how it would turn out.
This version passes the current tests/tsort.test. It also correctly prints a loop, e.g. if the input is: a b b c c a c d d e it prints: tsort: input contains a loop: a -> b -> c -> a Note that c -> d -> e are not part of a loop. This runs really fast even on a million lines (if run through | cat > outfile). Ray
tsort.c
Description: Binary data
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