On 2021-06-29 17:28:40 +0100, Stephane Chazelas via austin-group-l at The Open Group wrote: > 2021-06-29 16:28:17 +0200, Vincent Lefevre via austin-group-l at The Open > Group: > [...] > > > ( > > > sleep 1 > > > set +o errexit -o xtrace > > > pwd > > > pwd > > > ) | : > > > > > > Calls pwd only once with most shell implementations (all those > > > where pwd is builtin). > > > > > > Is that allowed? > > > > Since POSIX doesn't require to ignore or trap SIGPIPE before executing > > a builtin, I would say that it is the expected behavior with builtins. > [...] > > But utilities are meant to behave the same whether they're > builtin or not. A non-builtin pwd writting to a closed pipe > would not cause the shell to exit.
I would say that when a process is killed by a signal, it is not a behavior of this process: it is not the process that chooses to terminate. -- Vincent Lefèvre <[email protected]> - Web: <https://www.vinc17.net/> 100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/> Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
