I am using Macbook Pro (intel) with German Keyboard.
To type blackslash I need to press Shift + Options + 7.
However, backslash is not inputed in PSQL CLI Tool.
And this also the case when have to type [ with Option + 5.
So it seems the Options key input is not registered by PSQL CLI tool.

Desktop (please complete the following information):

• OS: MacOS Sonoma
• Version: 14.0
• Mode: Desktop
• Keyboard: German (not German - Standard)