Improve file extension checking performance
Improve file extension checking performance


Former-commit-id: 30aaff2f0bee9dd9743d4acd6a68aafc90addef9 [formerly 967fc0b47a5fb0d1b5e79a8b926f4fdd61b8477a] [formerly 5eaecd069cd3de9ebb5e3e6d0feb04844fc473c3 [formerly c76c69c256352c09b0409c9cc911a74f6499d17f]]
Former-commit-id: 11d0c1ae276859eccb7949d96dedbd0cd3204ffd [formerly 63de350fea7eb0a6d621b029c9c8866866462d31]
Former-commit-id: 422edd1298a7ba86dd958dcc7a513a0a3e6d83a3
hacdias/caddy-cms,hacdias/caddy-hugo,hacdias/filemanager,hacdias/caddy-hugo,hacdias/filemanager,hacdias/caddy-cms,hacdias/filemanager,hacdias/caddy-hugo,hacdias/caddy-cms,hacdias/filemanager,hacdias/caddy-hugo