Hi, regarding ECMA-376 we are still using the 1st edition :( ... and add elements of later schemas every now and then, at least for XSLF. I guess the files you are trying to process aren't generated by MS Office, right? Although we should also handle your case correctly, if this is out in the wild, most processing is based on example files generated by MS Office and therefore we haven't realized, that the attribute is optional.
So as PJ suggested, if we have an example file and optional a side-note which program generated the files, we can adapt the code accordingly. Andi
signature.asc
Description: OpenPGP digital signature
