It would be useful if gerbv had the ability to report / indicate that some of the gerber files loaded are empty. "Empty" in this context means that the file has correct syntax, but defines no actual features. Example: a drill file that has no drill holes included.

Background: some tools generate empty gerber files (yes, it is a bug). Often gerbv is used to check the generated output, so getting a "heads up" about empty files would be nice.