[wp-meta] [Making WordPress.org] #433: Block spaces and special characters in login names

[Making WordPress.org]

#433: Block spaces and special characters in login names
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Reporter:  nacin   |      Owner:
    Type:  defect  |     Status:  new
Priority:  normal  |  Component:  Support Forums
Keywords:          |
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 We blocked @ symbols in WordPress.org user logins a while ago. We should
 prevent spaces, too. It causes all sorts of messes.

 It's fine if a login has uppercase characters, but that should be the only
 differentiation between that and a user_nicename. If when sanitizing it to
 a user_nicename, it's not strcasecmp() equal, we should reject it as
 already chosen.

 This is going to block periods in usernames too, which I am fine with.
 Unless we wanted to allow periods in user nicenames on WordPress.org, but
 we don't want two users with the same name, just one with a period and one
 with a hyphen. I presume.

 This should include blocking the following situation:
  * Someone registered "example at user", ends up with example-user as a
 nicename. (This should be blocked in the future.)
  * Someone else registers "example-user". This login is not taken, and it
 cleanly sanitizes to "example-user". However, with that nicename already
 taken, they end up as "example-user1" (or -1, I don't remember). This
 should be blocked as it is incredibly confusing.

 Basically: Logins and nicenames should be interchangeable on WP.org.

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Ticket URL: <https://meta.trac.wordpress.org/ticket/433>
Making WordPress.org <https://meta.trac.wordpress.org/>
Making WordPress.org