Determine if a string is collapsible: Difference between revisions

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 function collapsible(string t)
+--  sequence utf32 = utf8_to_utf32(t) -- maybe
+--  for i=2 to length(utf32) do       --  """
+--      if utf32[i]=utf32[i-1] then   --  """
     for i=2 to length(t) do
         if t[i]=t[i-1] then