>
>Thank you again. In the meantime, I discovered several VFP user functions. I will test them (including yours) and see which one is the fastest and complete.

For completeness sake, the lines checking for the necessity of encoding should be changed to

		IF ASC(m.CharAt) >= 128 OR m.CharAt $ ":/?#[]@!$&'()*+,;=%" OR m.CharAt <= " "
			m.CharAt = "%" + STRCONV(m.CharAt,15)
		ENDIF