Magic lines which match but don't emit any text can be used to require multiple matatching patterns before returning a positive hit. I've put together a patch; it's attached to the upstream Debian bug report.
** Bug watch added: Debian Bug tracker #589056 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=589056 ** Also affects: file (Debian) via http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=589056 Importance: Unknown Status: Unknown -- magic string for "Bio-Rad .PIC" is too relaxed https://bugs.launchpad.net/bugs/61360 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs