Hi Bruno, Eric, et al., Please have a look at GCC's fixincludes. It needs (and uses) a chain of processes. See gcc/fixincludes/server.[ch] and ../procopen.c
To solve problems I couldn't figure out, I had to fork() and exit() the writer to the chain, or the intermediate processes would hang. Even with closing all the pipes and sending down HUP ioctls. Nothing I tried worked until the original pipe controlling process actually exited. In any event, it ought not be much trouble to fiddle the interface so you could give this pipe-filter process an initial FD pair so you could chain a bunch of them together. Thank you!! Regards, Bruce
