From d11e951fe6980a9812fb0be839490a4b77b9b1cc Mon Sep 17 00:00:00 2001
From: Kyle Drake <kyle@kyledrake.net>
Date: Thu, 3 Oct 2024 14:37:13 -0500
Subject: [PATCH] usernames: restrict to lowercase match

---
 models/site.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/models/site.rb b/models/site.rb
index 365d5444..bd718849 100644
--- a/models/site.rb
+++ b/models/site.rb
@@ -683,7 +683,7 @@ class Site < Sequel::Model
   end
 
   def self.valid_username?(username)
-    !username.empty? && username.match(/^[a-zA-Z0-9]([a-zA-Z0-9_\-]{0,}[a-zA-Z0-9])?$/i) != nil
+    !username.empty? && username.match(/^[a-z0-9]([a-z0-9_\-]{0,}[a-z0-9])?$/) != nil
   end
 
   def self.disposable_email_domains_whitelist