Inconvenience with Diff with latest

[becarpenter]

Diff with latest is very handy for an author working solo. However, it's quite a nuisance when working with co-authors, because it doesn't provide a self-contained HTML file like rfcdiff does. I often want to generate the diffs as a single file I can send to my co-authors.

Could we have a mode for Diff with latest that generates a stand-alone file? (Exactly as iddiff does.)

Without this I have no choice but to generate txt files myself and run rfcdiff or iddiff separately.