the data is valid if the regular expression matches it. Regular expressions
are in the format of \fBregcomp\fR and \fBregexec\fR. Please notice
that the regular expression must match the whole field. If you have for
the data is valid if the regular expression matches it. Regular expressions
are in the format of \fBregcomp\fR and \fBregexec\fR. Please notice
that the regular expression must match the whole field. If you have for