Locate the best instance of 'pattern' in 'text' near 'loc' using the
Bitap algorithm. Returns -1 if no match found.
@param text The text to search.
@param pattern The pattern to search for.
@param loc The location to search around.
@return Best match index or -1.
Locate the best instance of 'pattern' in 'text' near 'loc' using the Bitap algorithm. Returns -1 if no match found. @param text The text to search. @param pattern The pattern to search for. @param loc The location to search around. @return Best match index or -1.