lenp is non-zero, it does the same to lenp, but this time starting from
the offset, rather than from the start
of the string. Handles type coercion.
-I<flags> is passed to C<SvPV_flags>, and usually should be
+C<flags> is passed to C<SvPV_flags>, and usually should be
C<SV_GMAGIC|SV_CONST_RETURN> to handle magic.
=cut
Converts the offset from a count of bytes from the start of the string, to
a count of the equivalent number of UTF-8 chars. Handles type coercion.
-I<flags> is passed to C<SvPV_flags>, and usually should be
+C<flags> is passed to C<SvPV_flags>, and usually should be
C<SV_GMAGIC|SV_CONST_RETURN> to handle magic.
=cut