One implementation using only one recursive function and the sequence
library:
(defn split-at-subsequence [mark input]
(when-let [sequence (seq input)]
(let [len (count mark)
pieces (partition-all len 1 sequence)
[fst rst] (split-with #(not= mark %) pieces)
fst (map first fst)
rst (map first (drop len rst))]
(remove empty?
(lazy-seq
(list* fst
(split-at-subsequence mark rst)))))))
I've created https://gist.github.com/1901772 for the code.
Hope this helps,
Juan Manuel
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