Mapping users to existing users

Hello,

We do have a wiki with existing users, and would like to migrate to OIDC authentification.

However, when trying to login with existing users, the plugin is creating users with username-0 instead of mapping to existing user with the same username.

I had a look in the code and it seems to be enforced that way.

Would it be possible to add an option to link to existing users instead of creating new ones, when username/subjets match ?

Thanks and have a nice day!