Run Exiftool command after editing IPTC/XMP Metadata

[jmoliver]

It would be nice to add a functionality which would execute custom exiftool commands post (after) a user edits IPTC/XMP Metadata. The photo geotagging application Geosetter has something similar in its settings and it is quite useful for extending capabilities.

For example, say a user wishes that for the files which had their IPTC/XMP Metdata edited certain fields be copied to some corresponding IPTC Extension fields which XnView does not support.

[margu]

This would be a good workaround for a missing feature in XnView: export all metadata, not only keywords but also IPTC (caption, headline, copyright, location etc) to XMP sidecar files. This is the actual missing feature.