When I type H-z, emacs waits for more input, so I assume something is bound to H-z plus something else, only in this case C-h k H-z also just waits for more input. How can I find out what is bound to what starting with H-z?

  • 1
    +1 for a question asking how to find out... This is the best kind of question, especially for a tool like Emacs that gives you lots of ways to ask it for help. (Such questions should have the tag help.)
    – Drew
    Feb 5, 2017 at 15:50

2 Answers 2


Emacs has a special case for this, hitting the help character (default: either C-h or F1) after an incomplete key sequence will execute describe-prefix-bindings and show you possible commands starting with it.


You can find the bindings that start with a prefix by pressing C-h or <F1> after the prefix. In your case, pressing H-z C-hwill list all bindings that start with H-z.

See this stackoverflow answer for more info about the convention that allows this to work: https://stackoverflow.com/a/10330564/3101625

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