loRegExp = NEWOBJECT("_regexp", HOME(1) + "ffc\_regexp.vcx") loregexp.pattern = "![^!]|[^!]!$" && Match a exclamation point not followed by && another one, or one at the end of the line && not preceded by another one. ?loregexp.execute("!u") && Matches ?loregexp.execute("u!") && Matches ?loregexp.execute("!") && Doesn't match ?loregexp.execute("!!") && Doesn't match