Re: [DISCUSS] validation on git config user.email

From: Konstantin Ryabitsev <konstantin@linuxfoundation.org>
Date: Sep 12, 2025, 15:13 UTC
Message-ID: <20250912-curvy-owl-of-growth-a84dfc@lemur>
In-Reply-To: <CAJKmQvf-sLxowLJLitvqDmyL1BXXDK+anDE2jaBSEabApMNVoQ@mail.gmail.com>

On Fri, Sep 12, 2025 at 12:13:07PM +0800, usharerose wrote:

Show 8 quoted lines

> Hi, Git Community,
> 
> I'm a Git user and curious about a specific aspect of Git's design
> regarding the 'user.email' configuration.
> 
> Git allows any kind of values without restriction when setting
> 'user.email' via 'git config' (e.g., `git config user.email
> "not-a-valid-email-address"`).

That's a valid email address on the local system. It will get expanded into not-a-valid-email-address@localhost (or whatever domain is configured with the local MTA).

> I'm interested in understanding the design philosophy or historical
> reasons behind this 'lack' of validation.

This may be insightful: https://e-mail.wtf

:)

-K