Re: vc-state and unregistered

[Dmitry Gutov]

Hi Michael,

On 04/18/2016 05:55 PM, Michael Albinus wrote:

> I've checked a little bit more. If we use nil instead of unregistered as
> result from vc-state, we cannot use file properties for this function
> anymore. nil is meant as "no property set". This would be a regression.

Regression how? We already do exactly that: return `nil' in vc-state to 
mean "unregistered or unknown", and have been doing this for a while.

This is not a significant problem, for two reasons:

- The "unregistered" status is tracked by a different property: 
unregistered files have no backend associated with them. vc-registered 
stores `none' as the value of the file's backend in this case. So we 
don't have vc-git-registered called again and again, even for 
unregistered files.

- If the above scheme is deemed insufficient, we could use the same 
approach for the `vc-state' property.