More doc on a different way to markup the email:
https://developers.google.com/gmail/markup/reference/formats/json-ld

Actually, what is the difference between ~/.arcconfig and ~/.arcrc?

I have two aliases that I wish I didn't have to have re-typed today between two of my machines.
I particularly like to be able to set up a new machine without thinking of what I might have missed on the old one.

https://secure.phabricator.com/T9935 Thank you!

I really thought I filed as a Feature request. I will reopen there.

Seems convoluted to recreate the ~/.arcrc each time I change the template. Moreover, when the config is modified directly by arc (arc alias for example), it will modify the generated ~/.arcrc. So I'd have to (remember to) copy these additions back to the template.

Thank you!

Right, adding the "shell command" words would be nice.

Note that the comment when removing the alias has also this "issue":