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This commit implements the requirements of POSIX.1-2024 for the `trap` built-in. The `trap` built-in now supports the `-p` option in the POSIXly-correct mode. When the `-p` option is used, the built-in prints all traps without filtering out traps that are not set. The built-in also reports signals that are ignored because the program that invoked the shell has set the signal to be ignored. The test case file is synced with: https://github.com/magicant/yash-rs/blob/c348c1f0fed18be5b760bd1ed5ec73f224e53731/yash-cli/tests/scripted_test/trap-p.sh
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This commit implements the requirements of POSIX.1-2024 for the
trapbuilt-in. Thetrapbuilt-in now supports the-poption in the POSIXly-correct mode. When the-poption is used, the built-in prints all traps without filtering out traps that are not set. The built-in also reports signals that are ignored because the program that invoked the shell has set the signal to be ignored.Closes #113