Bug#389160: [Adduser-devel] Bug#389160: adduser: Please allow "@" in user names

[Marc Haber]

On Sun, Sep 24, 2006 at 06:39:40PM +0100, Stephen Gran wrote:
> Tentative fix has been checked in to svn.  It Works For Me (TM), but
> another look wouldn't hurt before release.

Your fix reduces an error to a warning, allowing _all_ sorts of bad
characters in user names. I am not sure whether I like that. Actually,
I hate the idea.

I think that we should

(a) investigate whether @ in a user name can cause serious harm, and
    if not,
(b) add @ to the list of allowed characters.

Greetings
Marc

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