How to translate C-i to F8

Question

I have tried the following:

(keyboard-translate ?\C-I (kbd "<f8>"))
(keyboard-translate ?\C-I [(f8)])

The representation of F8 key is wrong.

Answer 1

keyboard-translate takes character arguments, and (kbd "<f8>") does not evaluate to a character.

Try this:

(define-key key-translation-map (kbd "C-i") (kbd "<f8>"))

but take note! C-i is the same thing as TAB, so this also makes the TAB key act as F8.

In GUI frames you can use bindings for <tab> which is independent of TAB; but for cross-terminal compatibility anything binding the TAB key will normally use TAB and leave it to the default translation of <tab> => TAB to make GUI and text terminals behave the same way. So if you don't want your TAB key to act as F8 you probably need to introduce a bunch of new bindings for <tab> (and then only use GUI frames).