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