Convert Unicode escape sequences (\uXXXX) back to their original characters.
Example
\u0048\u0069 → Hi
\u0041\u0042\u0043 → ABC
\u0021 → !
Convert Unicode escape sequences (\uXXXX) back to their original characters.
\u0048\u0069 → Hi
\u0041\u0042\u0043 → ABC
\u0021 → !