The character is used as a delimiter when testing for interwiki user rights (In Special:UserRights, it is possible to modify users on different databases if the delimiter is used, e.g., Someuser@enwiki).
It is recommended that you have this delimiter in $wgInvalidUsernameCharacters , or you will not be able to modify the user rights of those users via Special:UserRights.
MediaWiki version:≥ 1.27
Since MediaWiki 1.27, this character is also a delimiter in bot passwords .
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HTML:
3.2
| Encoding:
UTF-8
| Version:
0.7.4