bos@144: $ \textbf{grep printf hello.c}
bos@144: 	printf("hello, world!\textbackslash{}");
bos@144: $ \textbf{hg update tip}
bos@144: 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
bos@144: $ \textbf{grep printf hello.c}
bos@144: 	printf("hello, world!\textbackslash{}");
bos@144: 	printf("hello again!\textbackslash{}n");