From: Vincent Lefevre <vincent@vinc17.net> To: zsh-workers@zsh.org Subject: Re: Ctrl-\ while executing a pipeline made zsh quit Date: Tue, 26 Apr 2022 05:00:02 +0200 [thread overview] Message-ID: <20220426030002.GC100943@zira.vinc17.org> (raw) In-Reply-To: <CAH+w=7Z2CG4wWgV31MLLtM64BCfu2Dt-N6oYzb8krY+wvCrqyw@mail.gmail.com> On 2022-04-25 18:24:15 -0700, Bart Schaefer wrote: > On Mon, Apr 25, 2022 at 5:37 PM Vincent Lefevre <vincent@vinc17.net> wrote: > > > > With zsh 5.8.1 under Linux (zsh 5.8.1-1 Debian/unstable package), > > while I was executing a pipeline, I typed Ctrl-\ to interrupt it > > (Ctrl-C had no effect), which made unexpectedly zsh quit: SIGQUIT > > should interrupt the commands zsh starts, not the interactive shell > > itself. > > I'm unable to reproduce this on Ubuntu 20.04 with 5.8.1.2-test. I can't reproduce it either. This may be a timing related issue: perhaps there's some place where if a signal is received, everything goes wrong (Ctrl-C normally has an effect, so perhaps things were wrong when I first try Ctrl-C). The only case I had found where Ctrl-C had no effect was this bug: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=931216 https://github.com/gwsw/less/issues/12 i.e. in case of process substitution, but here there was no such thing. Or perhaps the cause of the issue was that here, the Ctrl-C didn't kill the left-hand side (possibly because the ssh started by svn got frozen... not sure). > I vaguely recall there's actually a bug in some version(s?) of "less" > that causes its parent to exit? I'm not aware of that, and I don't see how this could be the fault of "less" (unless it kills his parent, but why would it do this?). > I did discover that if "less" exits with an error, the whole pipeline > becomes unkillable with either INT or QUIT; the shell is hung until > the left side exits. If "less" really exits, how could this happen? -- Vincent Lefèvre <vincent@vinc17.net> - 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)
next prev parent reply other threads:[~2022-04-26 3:00 UTC|newest] Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-04-26 0:36 Vincent Lefevre 2022-04-26 0:44 ` Vincent Lefevre 2022-04-26 1:24 ` Bart Schaefer 2022-04-26 3:00 ` Vincent Lefevre [this message] 2022-04-26 4:05 ` Bart Schaefer 2022-04-26 9:07 ` Vincent Lefevre 2022-04-26 9:18 ` pipeline that cannot be interrupted (was: Ctrl-\ while executing a pipeline made zsh quit) Vincent Lefevre 2022-04-26 10:07 ` pipeline that cannot be interrupted Vincent Lefevre 2022-04-27 20:07 ` Bart Schaefer 2022-04-27 20:29 ` Bart Schaefer 2022-04-29 0:24 ` Bart Schaefer
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