trypref
static int trypref(char *, const char *, size_t);
if (trypref(ep, ".", 0))
if (trypref(ep, ".", 0) || suffix(ep, 0))
return trypref(ep, a, lev) || suffix(ep, lev);
return trypref(ep, a, lev);
return trypref(ep, a, lev);
if (trypref(ep, d, lev) || suffix(ep, lev))