invalid-character-zero-width-space / E2515

Message emitted:

Invalid unescaped character zero-width-space, use "\u200B" instead.

Description:

Invisible space character could hide real code execution.

Problematic code:

STRING = "Invalid character zero-width-space ​"  # [invalid-character-zero-width-space]

Correct code:

STRING = "Valid character zero-width-space u200B"

Created by the unicode_checker checker.