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-- v2.13 CORPUS-IV: %f frontier pattern. print(string.gsub("THE (quick) fox", "%f[%a]%u+%f[%A]", "X")) print(string.find("hello world", "%f[%w]%w+")) local n = select(2, string.gsub("one two three", "%f[%w]", "|")) print(n) print(string.match("int x=10;", "%f[%d]%d+"))