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I'm trying to setup some keybinds using functions from the python-x package. While it works for the simple call (global-set-key (kbd "C-c C-j") 'python-shell-send-line), when I try to chain multiple functions using the lambda trick I get <C-return> is undefined despite having no error at startup. Here is the command I put in the user-config in .spacemacs :

(global-set-key (kbd "C-RET") (lambda () (interactive) (python-shell-send-line) (next-line)))

python-x works with python mode but the simple keybind is available everywhere while the chained keybinds are all undefined. Where does it go wrong ?

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(kbd "C-RET") does not actually refer to "Control return", the way it looks like it will.

To find out how a key should be written, press C-h c and then the key. If we do that, we get:

<C-return> is undefined

So, use C-<return>:

(global-set-key (kbd "C-<return>") (lambda () (interactive) (python-shell-send-line) (next-line)))
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  • thanks for the trick that works, I have another problem I'm trying to ovewrite a keybind introduced by python-x it's C-c C-p, do you know if I can do that in user-config ?
    – ChiseledAbs
    Jan 3, 2017 at 17:15
  • Check out emacs.stackexchange.com/questions/21978/… . If that doesn't work, ask a separate question, because long answers in comments are hard to read.
    – zck
    Jan 3, 2017 at 17:27
  • 2
    Check out the Emacs manual section on named ASCII chars for an explanation of the differences between RET and <return>.
    – Tianxiang Xiong
    Jan 4, 2017 at 17:47

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