Info Catalog efaq: Backspace invokes help efaq: Key bindings efaq: Producing C-XXX with the keyboard

efaq: Swapping keys

 
 9.7 How do I swap two keys?
 ===========================
 
 You can swap two keys (or key sequences) by using the
 ‘keyboard-translate’ function.  For example, to turn ‘C-h’ into <DEL>
 and <DEL> to ‘C-h’, use
 
      (keyboard-translate ?\C-h ?\C-?)  ; translate 'C-h' to DEL
      (keyboard-translate ?\C-? ?\C-h)  ; translate DEL to 'C-h'.
 
 The first key sequence of the pair after the function identifies what is
 produced by the keyboard; the second, what is matched for in the
 keymaps.
 
    However, in the specific case of ‘C-h’ and <DEL>, you should toggle
 ‘normal-erase-is-backspace-mode’ instead of calling
 ‘keyboard-translate’.  (emacs)DEL Does Not Delete.
 
    Keyboard translations are not the same as key bindings in keymaps.
 Emacs contains numerous keymaps that apply in different situations, but
 there is only one set of keyboard translations, and it applies to every
 character that Emacs reads from the terminal.  Keyboard translations
 take place at the lowest level of input processing; the keys that are
 looked up in keymaps contain the characters that result from keyboard
 translation.
 

Info Catalog efaq: Backspace invokes help efaq: Key bindings efaq: Producing C-XXX with the keyboard