bug#21364: [PATCH] Add vc-activate (interactive) to activate VC mode on the current buffer

[David Caldwell]

On 8/27/15 7:23 PM, Stefan Monnier wrote:
>> The motivation comes from the fact that I don't consistently use VC for
>> everything. I often pop back and forth to the command line, depending on
>> the situation. This ends up with a lot of "git add" commands being run
>> behind emacs's back. I've been using `M-x revert-buffer` or `C-x C-v`,
>> but both of them seem too harsh for what I really want, which is for VC
>> to just check again real quick. I could `M-: RET (vc-find-file-hook)`
>> but that doesn't roll off the tongue very well.
> 
> Rather than vc-activate, I think you want a more general function, which
> *refreshes* the VC state (i.e. the state afterwards may be "inactive" if
> the file is not under the control of a VCS, for example).

Turns out vc-find-file-hook already deactivates the  VC state--I tested
by doing

   $ git rm --cached test && commit -m 'test'

followed by `M-x vc-activate` and the VC successfully went away on my
open 'test' buffer.

So it sounds like maybe it's just a question of the name?

-David

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