Simon Josefsson:
Would it make sense to change this to use an inclusive list of permitted characters instead? How about checking the field names that is in use today, and construct a regexp of permitted symbols out of that? Starting point: [A-Za-z][A-Za-z0-9-_]* /Simon
That is an option and would work for me.Though, the starting point should include "_" as allowed for first character for the reasons listed in my opening email.
Best regards, Niels