find all files except e.g. *.xml files in shell

Question

Using bash, how to find files in a directory structure except for *.xml files? I\'m just trying to use

find . -regex ....

regexe:

Answer 1

with bash:

shopt -s extglob globstar nullglob
for f in **/*!(.xml); do 
    [[ -d $f ]] && continue
    # do stuff with $f
done