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098cd7ece4
The trap and jobs builtins can be used to report information about traps and jobs. This works when they're called from the current shell but in a child shell the required information is usually cleared. Special hacks allow: - trap to work with command substitution; - jobs to work with command substitution or in a pipeline. Neither works with process substitution. - Relax the test for the trap hack so it also supports pipelines. - Pass the command to be evaluated to forkshell() in evalbackcmd() so trap and jobs both work with process substitution. function old new delta forkchild 629 640 +11 argstr 1502 1496 -6 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/1 up/down: 11/-6) Total: 5 bytes Signed-off-by: Ron Yorston <rmy@pobox.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
35 lines
391 B
Text
Executable file
35 lines
391 B
Text
Executable file
# no output -- default state
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echo ___
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trap
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# assign some traps
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echo ___
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trap "a" EXIT INT USR1 USR2
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# show them all
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echo ___
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trap
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# show them by command substitution
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echo ___
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echo $(trap)
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# show them by pipe
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echo ___
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trap | cat
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# show them by process substitution
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echo ___
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cat <(trap)
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# clear one
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echo ___
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trap 0 INT
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echo ___
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trap
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# clear another
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echo ___
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trap "-" USR1
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echo ___
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trap
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