It looks like looks_like_an_x_field() has a wrong implementation (in /usr/share/perl5/Debian/Control/Stanza.pm)
It allows XB or XS or XC but not XSBC.
It looks like looks_like_ an_x_field( ) has a wrong implementation (in /usr/share/ perl5/Debian/ Control/ Stanza. pm)
It allows XB or XS or XC but not XSBC.