Re: bash: unescaped `>` character when switching branches

From: Kristoffer Haugsbakk <kristofferhaugsbakk@fastmail.com>
Date: Jun 25, 2025, 08:53 UTC
Message-ID: <8515698b-4ab7-4901-bacb-1c47180c2530@app.fastmail.com>
In-Reply-To: <CA+B51BHEB24JNzOroTxFodxiuPJ1=Vj7KRFevrm2YatnTVuoYA@mail.gmail.com>

On Tue, Jun 24, 2025, at 14:59, Ondrej Pohorelsky wrote:

Show 13 quoted lines

> Hi,
>
> Our customer has found a possible issue when switching branches.
> Output redirection character `>` is not escaped properly when
> switching/checking out to different branch.
>
> Steps to reproduce:
> 1. Create a new branch and switch back to master
> ```
> $ git switch -C 'issue#1234>/tmp/dangerfile'
> Switched to a new branch 'issue#1234>/tmp/dangerfile'
> $ git switch master
> ```

It’s too bad that git-check-ref-format(1) does not disallow `>`.

It would be nice to have an opt-in extension to the ref format check which disallows `>`.