[wp-trac] [WordPress Trac] #39676: Remove restriction of minimum site title length of 4 characters

[WordPress Trac]

#39676: Remove restriction of minimum site title length of 4 characters
-------------------------+-------------------------------------------------
 Reporter:  flixos90     |      Owner:
     Type:  enhancement  |     Status:  new
 Priority:  normal       |  Milestone:  4.8
Component:  Networks     |    Version:
  and Sites              |   Keywords:  needs-patch needs-unit-tests needs-
 Severity:  normal       |  dev-note
  Focuses:  multisite    |
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 Currently `wpmu_validate_blog_signup()` does not allow specification of
 sites with titles shorter than 4 characters.
 We discussed this restriction while dealing with #37616, and came to the
 conclusion that it should be removed, since sometimes there are cases
 where shorter names should be allowed. For setups that need the current
 requirement, it is easily possible to re-add it by using the
 `wpmu_validate_blog_signup` filter (see the
 [https://wordpress.slack.com/archives/core-multisite/p1480442803001226
 full discussion on Slack]).

 While this change is backward-incompatible for people that rely on that
 requirement, it's not too critical to remove. We will still need to
 mention it in a dev-note, including the workaround that re-enables the
 check.

 Unit tests for `wpmu_validate_blog_signup()` should also be added as part
 of this change.

 As part of the #37616 task, this ticket represents number 16 of that
 ticket's list.

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Ticket URL: <https://core.trac.wordpress.org/ticket/39676>
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