From: Andy Koppe <andy.koppe@gmail.com>
Date: Thu, 23 Nov 2023 22:03:42 GMT
Subject: Re: git checkout -B <branch> lets you checkout a branch that is already checked out in another worktree Inbox
Message-ID: <c8f3fcdc-a10c-4c24-b954-899cf413837e@gmail.com>
In-Reply-To: <xmqqv89tau3r.fsf@gitster.g>

On 23/11/2023 05:58, Junio C Hamano wrote:
> Junio C Hamano <gitster@pobox.com> writes:
> 
>> I guess we could change the behaviour so that
>>
>>      git checkout -B <branch> [<start-point>]
>>
>> fails when <branch> is an existing branch that is in use in another
>> worktree, and allow "-f" to be used to override the safety, i.e.,
>>
>>      git checkout -f -B <branch> [<start-point>]
>>
>> would allow the <branch> to be repointed to <start-point> (or HEAD)
>> even when it is used elsewhere.
> 
> It turns out that for some reason "-f" is not how we decided to
> override this one---there is "--ignore-other-worktrees" option.

Presumably that's because -f means throwing away any local changes that 
are in the way of checking out the new HEAD, which you wouldn't 
necessarily want when trying to replace an existing branch.

Andy