replacex ( haystack , regex , tostring )

Return a new string where all occurrences of substrings matching the regular expression regex are replaced by tostring in the string haystack.

a$ = "Ouvi bossa e saí da fossa"
print Replacex(a$,"bossa","sopa")
print Replacex(a$, "[bf]ossa", "sopa")

will display

Ouvi sopa e saí da fossa
Ouvi sopa e saí da sopa

0.9.6.56