Why zsh hangs during command substitution?
Issue
- zsh hangs during command substitution
- It hangs in
rt_sigstate ingetoutput() - zsh may hang waiting for
SIGCHLDof process forked for command substitution which has been handled beforewaitforpid()was called ingetoutput().
Environment
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
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