Re: master 1e3b0f2: Improve doc strings of project.el

[Dmitry Gutov]

On 11.07.2020 15:59, Michael Albinus wrote:
> There is `dired-uncache'. Calling it shall be sufficient to remove
> respective caches in Tramp, whatever they are.

Cache invalidation aside, when talking about Tramp I was more curious 
whether its caching would be enough to speed up repeated invocations of 
project-try-vc. Or even said invocations from files belonging to the 
same directory, for instance.

Right now it relies on vc-root being cached, which allows it to skip 
some operations most of the time. But it also performs remote IO to read 
local variable values, and to fetch the list of git submodules.

And if we allow customizing root markers, that would stop make 
project-vc call locate-dominating-file directly. I'm guess that would 
circumvent any existing caches in Tramp. Please correct me if I'm wrong.