HelenOS sources

VENDOR_ONLY_FMT   176 uspace/lib/usbdev/src/recognise.c 		    "usb&" VENDOR_ONLY_FMT "&" IFACE_PROTOCOL_FMT,
VENDOR_ONLY_FMT   179 uspace/lib/usbdev/src/recognise.c 		    "usb&" VENDOR_ONLY_FMT "&" IFACE_SUBCLASS_FMT,
VENDOR_ONLY_FMT   182 uspace/lib/usbdev/src/recognise.c 		    "usb&" VENDOR_ONLY_FMT "&" IFACE_CLASS_FMT,
HelenOS homepage, sources at GitHub