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4 points by almkglor 6159 days ago | link | parent

  (def eschtmlchar (c)
    (case c
       #\<  "&lt;"
       #\>  "&gt;"
       #\&  "&amp;"
            (string c)))

   (defpat eschtmlchar-pat
     (#\<)  "&lt;"
     (#\>)  "&gt;"
     (#\&)  "&amp;"
     (c)    (string c))