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https://github.com/fish-shell/fish-shell
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cf2ca56e34
This teaches `--on-signal SIGINT` (and by extension `trap cmd SIGINT`) to work properly in scripts, not just interactively. Note any such function will suppress the default behavior of exiting. Do this for SIGTERM as well.
89 lines
1.9 KiB
Fish
89 lines
1.9 KiB
Fish
# RUN: env fth=%fish_test_helper %fish %s
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set -g SIGUSR1_COUNT 0
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function gotsigusr1
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set -g SIGUSR1_COUNT (math $SIGUSR1_COUNT + 1)
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echo "Got USR1: $SIGUSR1_COUNT"
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end
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function handle1 --on-signal SIGUSR1
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gotsigusr1
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end
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function handle_us42 --on-signal SIGUSR2
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end
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kill -USR1 $fish_pid
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sleep .1
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#CHECK: Got USR1: 1
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kill -USR1 $fish_pid
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sleep .1
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#CHECK: Got USR1: 2
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kill -USR2 $fish_pid
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sleep .1
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kill -USR2 $fish_pid
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sleep .1
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# Previous signals do not re-trigger handlers.
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functions --erase handle1
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kill -USR1 $fish_pid
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sleep .1
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kill -USR1 $fish_pid
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sleep .1
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kill -USR2 $fish_pid
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sleep .1
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# Send the signal and immediately define the function; it should not excute.
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kill -USR1 $fish_pid
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function handle1 --on-signal SIGUSR1
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gotsigusr1
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end
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echo "Hope it did not run"
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#CHECK: Hope it did not run
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kill -USR1 $fish_pid
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sleep .1
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#CHECK: Got USR1: 3
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# We can trap SIGINT.
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# Trapping it prevents exiting.
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function handle_int --on-signal SIGINT
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echo Got SIGINT
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end
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kill -INT $fish_pid
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#CHECK: Got SIGINT
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# In non-interactive mode, we have historically treated
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# a child process which dies with SIGINT as if we got SIGINT.
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# However in this case we don't execute handlers; we just don't exit.
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$fth sigint_self
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echo "Should not have exited"
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#CHECK: Should not have exited
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# If a signal is received while handling a signal, that is deferred until the handler is done.
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set -g INTCOUNT 0
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function handle_int --on-signal SIGINT
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test $INTCOUNT -gt 2 && return
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set -g INTCOUNT (math $INTCOUNT + 1)
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echo "start handle_int $INTCOUNT"
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sleep .1
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kill -INT $fish_pid
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echo "end handle_int $INTCOUNT"
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end
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kill -INT $fish_pid
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# CHECK: start handle_int 1
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# CHECK: end handle_int 1
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# CHECK: start handle_int 2
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# CHECK: end handle_int 2
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# CHECK: start handle_int 3
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# CHECK: end handle_int 3
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# Remove our handler and SIGINT ourselves. Now we should exit.
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functions --erase handle_int
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kill -INT $fish_pid
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echo "I should not run"
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