Re: [PATH] * trampvar.el.in (tramp-repository-branch, tramp-repository-version): Avoid to call git for initializing the variables

[Michael Albinus]

Lin Sun <sunlin7.mail@gmail.com> writes:

> Hi,

Hi Lin,

> The tramp is extremely slow on windows, and I found that tramp in
> emacs will call git 4 times on startup.
>
> In the emacs-release package, the `tramp-loaddefs.el` has the copy of
> tramp-repository-branch, tramp-repository-version (these two variables
> are marked as autoload), it will call git to initialize their values;
> and when requiring the `trampvar.el`, these two variables will be
> initialize with calling git again.  That will call git 4 times.
>
> This patch tries to avoid these calls, improving the performance a lot.

Thanks for the heads-up!

> Please help review the patch. Thanks.

Well, the patch computes the constants tramp-repository-branch and
tramp-repository-version at compile time. The results might be wrong,
when Tramp is not compiled but interpreted.

I've applioed another change, that Tramp does not call git from
tramp-loaddefs.el. This reduces the git calls to two times. Pushed to
the repositories.

Could you pls check, whether this makes a (sufficient) difference for you?

> Lin

Best regards, Michael.