LOCK_UN          3412 file.c         # ifndef LOCK_UN
LOCK_UN          4756 file.c             rb_file_const("LOCK_UN", INT2FIX(LOCK_UN));
LOCK_UN            18 missing/flock.c # ifndef LOCK_UN
LOCK_UN            38 missing/flock.c     case LOCK_UN:
LOCK_UN            87 missing/flock.c # ifndef LOCK_UN
LOCK_UN           113 missing/flock.c       case LOCK_UN:
LOCK_UN           289 win32/win32.c        case LOCK_UN:		/* unlock lock */
LOCK_UN           290 win32/win32.c        case LOCK_UN|LOCK_NB:	/* unlock is always non-blocking, I hope */
LOCK_UN           317 win32/win32.c        case LOCK_UN:
LOCK_UN           318 win32/win32.c        case LOCK_UN|LOCK_NB: