notepad++ ɾ³ýÖظ´¼Ç¼

1. sort line with Edit -> Line Operations -> Sort Lines Lexicographically ascending
2. do a Find / Replace:
   • Find What: ^(.*\r?\n)\1+
   • Replace with: (Nothing, leave empty)
   • Check Regular Expression in the lower left
   • Click Replace All

תÔØÓÚ:https://www.cnblogs.com/kakaisgood/p/8759959.html