shellharden 4.1.1

The corrective bash syntax highlighter
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echo "$a" "$b"
echo "$a$b"
echo "$a$(:)"
echo "$a/blædi/ "
echo "$a/blædi/$b"
echo "$a/blædi/$(
	# Identifiertailhazard
	echo "$a/"
	echo "$a:"
	echo "$a."
	echo "$a…"
	echo "${a}a"
	echo "${a}z"
	echo "${a}A"
	echo "${a}Z"
	echo "${a}_"
	echo "$a/"
	echo "$a:"
	echo "$a."
	echo "$a…"
	echo "${a}a"
	echo "${a}z"
	echo "${a}A"
	echo "${a}Z"
	echo "${a}_"
	echo "$(a)/"
	echo "$(a):"
	echo "$(a)."
	echo "$(a)…"
	echo "$(a)a"
	echo "$(a)z"
	echo "$(a)A"
	echo "$(a)Z"
	echo "$(a)_"

	# $(pwd) → $PWD
	echo "$PWD/"
	echo "$PWD:"
	echo "$PWD."
	echo "$PWD…"
	echo "${PWD}a"
	echo "${PWD}z"
	echo "${PWD}A"
	echo "${PWD}Z"
	echo "${PWD}_"
)"
# Characters that must not be swallowed
echo "$a"' '
echo "$a" ""
echo "$a"*":"
echo "$a"?":"
echo "$a";":"
echo "$a"&":"
echo "$a"|":"
echo "$a"\;":"
echo "$a">"/dev/null"
echo "$a"<"/dev/null"