The display of "unbound variable" cannot be prevented

emersion / mrsh

A minimal POSIX shell

MIT License

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The display of "unbound variable" cannot be prevented #162

Open ko1nksm opened 4 years ago

ko1nksm commented 4 years ago

$ mrsh -c '(set -u; : $v) 2>/dev/null; echo end'
mrsh: v: unbound variable
end

$ mrsh -c 'foo(){ ( { (set -u; : $v); } ) }; foo 2>/dev/null; echo end'
foo: v: unbound variable
end