In zsh, whenever I press Fn+Delete (which is forward delete) a tilde (~) gets inserted. This indicates zsh doesn't have the key bound.

How do I bind it, and make it behave normally (delete in front of the cursor)?

3 Answers 3


First figure out what sequence it generates.

echo "CtrlVFnDelete" | od -c

Then bind that sequence using the normal zsh bind mechanism.

  • 2
    ~ > echo "~"|od -c 0000000 ~ \n 0000002 ~ > What do I do with this information now?
    – Thomas R
    Jul 30, 2010 at 16:08
  • 10
    @rixth: It's not actually outputting only a tilde. You can't use echo "~" , you have to actually follow the directions that Ignacio gave you. On my system, it's ^[[3~ (or as od outputs: 033 [ 3 ~). So the command would be bindkey "^[[3~" delete-char which would go in your ~/.zshrc. Aug 2, 2010 at 1:05
  • 2
    To clarify the above, ctrl-v is a special escape sequence that means "insert the next character I press as a literal unescaped character, instead of doing whatever it usually does." Meaning that it doesn't get converted to ~, but stays as the escape sequence.
    – NHDaly
    May 23, 2016 at 23:38
  • I don't understand how to use the output of the above to derive the bindkey. My output is 0000000 C t r l V F n D e l e t e \n 0000016. Jun 22, 2016 at 13:32

For me the above didn't do the trick so I added the following key binding to my ~/.zshrc:

bindkey "\e[3~" delete-char

FYI: I am on a Mac (High Sierra).

  • And how to know the code for any other key I want to bind, e.g. Fn+F1? so that I can set the corresponding codes in my ~/.zshrc. Mar 29, 2018 at 17:34
  • 1
    You could type cat and then type the keys. Fn+F1 gives me ^[OP for instance. Apr 3, 2018 at 7:37

bindkey 'CtrlvFnDelete' delete-char

This will bind Fn+Delete to delete forward a single character. If the above is not clear, you need to type Ctrl+v, Fn+Delete between typing the quotes. Ctrl+v allows you type the literal escape escape sequence of whatever key comes after it.

You can put this line in your ~/.zshrc file.

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