$ hg diff diff -r 2278160e78d4 hello.c --- a/hello.c Sat Aug 16 22:16:53 2008 +0200 +++ b/hello.c Fri Jun 05 15:51:51 2009 +0000 @@ -8,5 +8,6 @@ int main(int argc, char **argv) { printf("ciao, mondo!\"); + printf("ancora ciao!\n"); return 0; }