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class UnicodeUsernameValidator
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def initialize(opts = {})
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@opts = opts
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end
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def valid_value?(value)
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@valid = SiteSetting.external_system_avatars_enabled || value == "f"
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end
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def error_message
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I18n.t("site_settings.errors.unicode_usernames_avatars") if !@valid
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end
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end
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