collapseos/blk/426

: ELSE              ( a1 -- a2 | a1: IF cell a2: ELSE cell )
    COMPILE (br)
    2 ALLOT
    DUP H@ -^ SWAP  ( a-H a )
    !
    H@ 2-          ( push a. -2 for allot offset )
; IMMEDIATE

: [IF]
    IF EXIT THEN
    LIT< [THEN] BEGIN DUP WORD S= UNTIL DROP ;
: [THEN] ;