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Some tests with the builtin functions #ifexist and/or urlencode:
- User:Erik+Warmelink/''italicised'' does exist, User:Erik Warmelink/''italicised''
- /italicised doesn't exist, /italicised
- User:Erik+Warmelink/''iTaLiCiSeD'' doesn't exist, [[User:Erik Warmelink/iTaLiCiSeD]
- &c. does exist, &c.
- 碁 does exist, 碁
- saté does exist, saté
- [[b%3Csup%3Eh%3C%2Fsup%3Eer]] doesn't exist, [[bher]]