Re: [PATCH] revisions: add @{default} shorthand for default branch

[Harald Nordgren <haraldnordgren@gmail.com>]

Thanks for your comments!

> But @{upstream} and @{push} are inherently very different from what
> you are adding, aren't they?  Asking for topic1@{upstream} and
> topic2@{upstream} makes quite a lot of sense, because the meaning of
> @{upstream} depends on "which branch's upstream are you talking
> about???".  But I suspect that asking for topic1@{default} and
> expect it would be different from topic2@{default} is nonsense, as
> "the default" is not per branch but is an attribute of a repository.
> In other words, <branch>@{default} may by itself be a nonsense
> query.  Are you rejecting a non-empty <branch> that may appear
> before @{default} as an error?

I will update the code to treat 'new-branch@{default}' as nonsense, it's
not a case I thought about, and would never use 😅

> After cloning an upstream project, those who dislike the local
> branch name 'master' often rename it to something else, like 
> 
>     $ git branch -m master main

I have never heard about anyone doing that. Isn't it more expected that
people keep whatever branch is on the remote? But regardless, I hope
there is a way to still make @{default} map to whatever your renamed your
default branch to.

> Given
> that the names of local branches are under control of the local end
> user and not upstream projects, I would imagine that the primary
> branch used by a user is of per-user nature, not per repository.  In
> other words, instead of having to do "git branch -m" after cloning,
> you may do "git config --global init.defaultBranch" just once and
> keep using the same default name.

My ratio on cloning other people's repo vs. create new repos is likely
999/1, so I'm given the default names that maintainer chose. I have
default branches called 'master', 'main' and 'develop'.

Yes it's possible to rename, but what this feature does is open up the
convenience of not having to bother with that.

I have this script that I run many times a day. However it doesn't work
when remote is not called 'origin', so I have another version for
'upstream', etc:

    git checkout $(git symbolic-ref refs/remotes/origin/HEAD | sed 's@^refs/remotes/origin/@@')

That's uneccessary overhead, that could now be replaced with:

    git checkout @{default}


Harald