This file is indexed.

/usr/share/fish/functions/popd.fish is in fish-common 2.2.0-3.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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function popd --description "Pop dir from stack"
	if count $argv >/dev/null
		switch $argv[1]
			case -h --h --he --hel --help
				__fish_print_help popd
				return 0
		end
	end

	if test $dirstack[1]
		cd $dirstack[1]
	else
		printf (_ "%s: Directory stack is empty...\n") popd
		return 1
	end

	set -e dirstack[1]

end