! err600_if_comments_tab.jnl
! ACM 10-4-2006
! bug 1446  When there is a tab before a comment, the parsing gets 
! thrown off and we got an error about an invalid ENDIF

IF 0 THEN
   LET a = 12
   IF `a` THEN  ! a comment
   	   say "variable a is defined"
   ENDIF
ENDIF

! Here there is a tab before the ! which throws off the parsing...
IF 0 THEN
   LET a = 12
   IF `a` THEN	! a comment
   	   say "variable a is defined"
   ENDIF
ENDIF
