On Jun 1, 11:31am, Peter Stephenson wrote: } Subject: Re: Bug#310872: zsh can't be a ksh replacement (can't trap ERR). } } Bart Schaefer wrote: } > I note in passing that "trap" in zsh doesn't understand all the same } > signals that "kill" does. For example, when the OS defines both, "kill" } > understands SIGIO as a synonym for SIGPOLL and SIGCLD for SIGCHLD, but } > "trap" only knows CHLD and POLL. } } How did you work this out?
I was basing it on an observation of the awk-generated list of trap names on my system and the lack of any explicit mention of CLD and IO elsewhere in the trap code, vs. the presence of alt_sigs in jobs.c. } Adding SIGERR as an alias where there's no system signal is trivial. } Now it should show up in the trap lists under ERR, too. I've removed } the ALT_SIGS definition because there isn't really any justification for } making the mechanism optional now. I can't tell by reading the patch: does this do as Oliver suggested and prefer the ZERR equivalent for ERR, requiring SIGERR to get the actual signal? If not -- that is, if SIGERR is preferred when available -- then we still don't have ksh compatibility. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
