EXEC_SCRIPT_MAGICLEN
epp->ep_hdrvalid < EXEC_SCRIPT_MAGICLEN ||
strncmp(hdrstr, EXEC_SCRIPT_MAGIC, EXEC_SCRIPT_MAGICLEN))
for (cp = hdrstr + EXEC_SCRIPT_MAGICLEN; cp < hdrstr + hdrlinelen;
for (cp = hdrstr + EXEC_SCRIPT_MAGICLEN; *cp == ' ' || *cp == '\t';
#define SCRIPT_HDR_SIZE (EXEC_SCRIPT_MAGICLEN + MAXINTERP + 2)