File: each_grapheme_cluster.rdoc

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Calls the given block with each successive grapheme cluster from +self+
(see {Unicode Grapheme Cluster Boundaries}[https://www.unicode.org/reports/tr29/#Grapheme_Cluster_Boundaries]);
returns +self+:

  s = "\u0061\u0308-pqr-\u0062\u0308-xyz-\u0063\u0308" # => "ä-pqr-b̈-xyz-c̈"
  s.each_grapheme_cluster {|gc| print gc, ' ' }

Output:

  ä - p q r - b̈ - x y z - c̈

Returns an enumerator if no block is given.