user=> (clojure.string/replace "The color is red." #"[aeiou]" #(str %1 %1)) "Thee cooloor iis reed."
user=> (clojure.string/replace "The color is red." #"[aeiou]" #(str %1 %1)) "Thee cooloor iis reed."
user=> (replace "The color is red." #"[aeiou]" #(str %1 %1)) "Thee cooloor iis reed."