** iso-acc.el now lets you specify a choice of language.
Languages include "latin-1" (the default) and "latin-2" (which is designed for entering ISO Latin-2 characters).

There are also choices for specific human languages such as French and Portuguese. These are subsets of Latin-1, which differ in that they enable only the accent characters needed for particular language. The other accent characters, not needed for the chosen language, remain normal.