Case-insensitive REPLACE in MySQL?

Question

MySQL runs pretty much all string comparisons under the default collation... except the REPLACE command. I have a case-insensitive collation and need to run a

Answer 1

In case of 'special' characters there is unexpected behaviour:

SELECT case_insensitive_replace('A', 'Ã', 'a')

Gives

a

Which is unexpected... since we only want to replace the à not A

What is even more weird:

SELECT LOCATE('Ã', 'A');

gives

0

Which is the correct result... seems to have to do with encoding of the parameters of the stored procedure...