enough information to do it right. */
static int
-argmatch (char **argv, int argc, char *sstr, char *lstr, int minlen, char **valptr, int *skipptr)
+argmatch (char **argv, int argc, const char *sstr, const char *lstr, int minlen, char **valptr, int *skipptr)
{
char *p = NULL;
int arglen;