[PATCH 3 of 3] chg: hold a lock file before connected to server

[Jun Wu]

On 02/29/2016 08:40 PM, Matt Mackall wrote:
> You're aware that this won't work on many (most?) network filesystems
> or on non- Unix systems, right? Seems a pretty unfortunate choice.

Thanks for the reminder. This file lives in /tmp, which seems unlikely
to be a network location.

That said, even with a broken lock, chg should still be able to produce
correct output eventually. It may waste some CPU time though.

Windows is not supported by chg because of fork.