openssh unix dev - Jul 2013 - Universal variables

Variables such as %u, %r, etc are only interpreted sometimes. Is there
any reason they shouldn't always be expanded? Ie, if I want a config
that I could send to many users, I might want to do:
User %u123
Thinking that I can derrive a the username from what they are using to
login with. However, this doesn't work. So, I started wondering, It's
probably harder to limit where these variables are used vs just
allowing them universally, so why is this done?

On Wed, 24 Jul 2013, shawn wilson wrote:
> Variables such as %u, %r, etc are only interpreted sometimes. Is there
> any reason they shouldn't always be expanded? Ie, if I want a config
> that I could send to many users, I might want to do:
> User %u123
> Thinking that I can derrive a the username from what they are using to
> login with. However, this doesn't work. So, I started wondering,
It's
> probably harder to limit where these variables are used vs just
> allowing them universally
This isn't true. Every place where we want to expand a variable requires
at least three lines of code.

-d