filter_add_if_missing("xmp", "XMP sidecar", ".xmp", FORMAT_CLASS_META, TRUE, FALSE, TRUE);
filter_add_if_missing("gqv", GQ_APPNAME " image collection", GQ_COLLECTION_EXT, FORMAT_CLASS_META, FALSE, FALSE, TRUE);
filter_add_if_missing("ufraw", "UFRaw ID file", ".ufraw", FORMAT_CLASS_META, FALSE, FALSE, TRUE);
+ filter_add_if_missing("pto", "Panorama script file", ".pto", FORMAT_CLASS_META, FALSE, FALSE, TRUE);
/* These are the raw camera formats with embedded jpeg/exif.
* (see format_raw.c and/or exiv2.cc)