[Pkg-zsh-devel] Bug#933730: zsh: pipeline that cannot be interrupted with Ctrl-C (regression)

[Vincent Lefevre]

Package: zsh
Version: 5.7.1-1
Severity: normal
Tags: upstream
Forwarded: http://www.zsh.org/mla/workers/2019/msg00672.html

The following pipeline cannot be interrupted with Ctrl-C:

  { /bin/sleep 10 ; /bin/sleep 20; } | { /bin/sleep 30 ; /bin/sleep 40; }

But if I remove one of the sleep, it can be interrupted by Ctrl-C.

This is a regression: there was no issue with zsh 5.3.1 (Debian 9).

-- Package-specific info:

Packages which provide vendor completions:

Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name           Version      Architecture Description
+++-==============-============-============-=======================================================
ii  curl           7.65.1-1     amd64        command line tool for transferring data with URL syntax
ii  pass           1.7.3-2      all          lightweight directory-based password manager
ii  pulseaudio     12.2-4       amd64        PulseAudio sound server
ii  qpdf           8.4.2-1      amd64        tools for transforming and inspecting PDF files
ii  systemd        241-7        amd64        system and service manager
ii  udev           241-7        amd64        /dev/ and hotplug management daemon
ii  vlc-bin        3.0.7.1-3    amd64        binaries from VLC

dpkg-query: no path found matching pattern /usr/share/zsh/vendor-functions/


-- System Information:
Debian Release: bullseye/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.19.0-5-amd64 (SMP w/12 CPU cores)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=POSIX, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=POSIX (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages zsh depends on:
ii  libc6       2.28-10
ii  libcap2     1:2.25-2
ii  libtinfo6   6.1+20190713-2
ii  zsh-common  5.7.1-1

Versions of packages zsh recommends:
ii  libc6         2.28-10
ii  libncursesw6  6.1+20190713-2
ii  libpcre3      2:8.39-12

Versions of packages zsh suggests:
ii  zsh-doc  5.7.1-1

-- no debconf information