Using this lovely tool, I am creating XMP sidecar files for my library but am stumbling on one problem. About a third of my files are from a Canon 300D, which means that the complete data is spread over two files, a .CRW and a .THM. Does exiftool know how to merge the data to one sidecar file, effektevly replacing the .THM file or is this a still an area of exploration? Would the simplest thing be to create two temporary xmp-files, one crw-xmp and one thm-xmp, and then merge using xslt?
/glz