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grapheme_clusters 

        # String.grapheme_clusters

(from ruby core)
---
    str.grapheme_clusters   -> an_array

---

Returns an array of grapheme clusters in *str*.  This is a shorthand for
`str.each_grapheme_cluster.to_a`.

If a block is given, which is a deprecated form, works the same as
`each_grapheme_cluster`.

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