Re: [PATCH v2] checkout & worktree: introduce checkout.implicitRemote

On Fri, May 4, 2018 at 9:54 AM, Ævar Arnfjörð Bjarmason
[off-list ref] wrote:

Realistically the way we do hooks now would make the UI of this suck,
i.e. you couldn't configure it globally or system-wide easily. Something
like what I noted in
https://public-inbox.org/git/871sf3el01.fsf@evledraar.gmail.com/ would
make it suck less, but that's a much bigger task.

I thought you would bring this up :) I've given some more thoughts on
this topic and am willing to implement something like below, in a week
or two. Would that help change your mind?

I proposed hooks.* config space in that same thread. Here is the
extension to make it cover both of your points.

hooks.* can have multiple values. So you can specify
hooks.post-checkout multiple times and all those scripts will run (in
the same order you specified). Since we already have a search path for
config (/etc/gitconfig -> $HOME/.gitconfig -> $REPO/config) this helps
hooks management as well. Execution order is still the same: if you
specify hooks.post-checkout in both /etc/gitconfig and .git/config,
then the one in /etc/gitconfig is executed first, the one in .git
second.

And here's something extra to make it possible to override the search
order: if you specify hooks.post-checkout = reset (reset is a random
keyword) then _all_ post-checkout hooks before this point are ignored.
So you can put this in .git/config

[hooks]
    post-checkout = reset
    post-checkout = ~/some-hook

and can be sure that post-checkout specified in $HOME and /etc will
not affect you, only ~/some-hook will run. If you drop the second line
then you have no post-checkout hooks. This is a workaround for a
bigger problem (not being able to unset a config entry) but I think
it's sufficient for this use case.
-- 
Duy