XSL Multiple search and replace function

Question

I am attempting to use the XSL translate() function to create something like a search and replace function as follows:

Answer 1

The definition of the translate($arg, $mapString, $transString) function is:

Returns the value of $arg modified so that every character in the value of $arg that occurs at some position N in the value of $mapString has been replaced by the character that occurs at position N in the value of $transString.

That is, it does not replace a substring with another string, but rather maps characters to other characters. For substring replacement, use something like