Pretty way to specify string literals with control characters in bash?

Question

bash

It is required to use a string literal in bash containing, for example, a tab or newline. Here are the options I found.
Option 1:

x="hello
world"

Option 2:

x=`echo -e "hello\nworld"`

Can it be done differently?

Answer 1

The answer was found in man bash.
You need to escape the string with single quotes and put $ in front of it:
x=$'a\nb'

Answer 2

www.stackoverflow.com/a/1168084

VAR=$(cat <<'END_HEREDOC'
abc'asdf"
$(dont-execute-this)
foo"bar"''
END_HEREDOC
)

echo "$VAR"