IGN                57 src/cmd/5a/a.h #define	IGN		(-2)
IGN                59 src/cmd/6a/a.h #define	IGN		(-2)
IGN                59 src/cmd/8a/a.h #define	IGN		(-2)
IGN               500 src/cmd/cc/lex.c #define	IGN	(-2)