Application name requires alphanumeric character after a hyphen

[Billy Olsen]

When deploying a charm and specifying the application name, any names must have an alpha character following a hyphen. This is not specified anywhere in the documentation nor is it clear why the limitation exists.

At a minimum the application name format should be documented.

[Doug Parrish (dparrish)]

If it is the intention of the application designer to disallow name-9, then how about detailing this name limitation in at least 'juju help deploy' and wherever else an "word" is used to create an application, e.g. bundle.yaml docs.

[John A Meinel (jameinel)]

I believe the intent is to avoid confusion with charm versions (mysql-54) and unit names (mysql/5) with application names.

I agree that it should be well documented what valid names are. Specifically the error when trying to use an 'invalid' name should tell you (or give you further information to follow up) what a valid name would be.

[Doug Parrish (dparrish)]

Suggested doc update in https://github.com/juju/juju/pull/7537

[Billy Olsen (billy-olsen)]

Since the pull-request has gone merged, I believe that this should actually be fix-committed rather than Triaged. It'd be helpful to know which release it will get released in.