Splice()
splice(<list1>, <list2>, <word>[, <idelim>[, <odelim>]])
This function splices <list1> and <list2> together. <list1> and <list2> are space-separated lists of words
If a word in <list1> is the same as <word>, it is replaced by the word in the corresponding position in <list2>. Both lists must have the same number of words.
<idelim> may be used to specify an input delimiter other than a space.
<odelim> is the output delimiter.
Example
> say splice(foo bar baz,eek moof gleep,bar)
You say, "foo moof baz"