levenshtein.hon commit shortlog: warn the user when there is no input (3731449)
   1#ifndef LEVENSHTEIN_H
   2#define LEVENSHTEIN_H
   3
   4int levenshtein(const char *string1, const char *string2,
   5        int swap_penalty, int substition_penalty,
   6        int insertion_penalty, int deletion_penalty);
   7
   8#endif