# File lib/rbot/registry/tc.rb, line 79
79: defbdb_bt_compare(a, b)
80: ifa==nil||b==nil
81: warning"CIBTree: comparing #{a.inspect} (#{self[a].inspect}) with #{b.inspect} (#{self[b].inspect})"
82: end
83: (a||'').downcase<=> (b||'').downcase
84: end