bug#58747: 28.2; local-function-key-map is not used when used with input-decode-map and modifier

[Eli Zaretskii]

> Date: Mon, 24 Oct 2022 01:06:49 +0800
> From:  Lin Jian via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
> 
> 
> Steps to reproduce this bug:
> 1. emacs -q
> 2. (define-key input-decode-map [?w] [a-not-used-symbol-xxx-0])
> 3. (define-key local-function-key-map [a-not-used-symbol-xxx-0] 
> [a-not-used-symbol-xxx-1])
> 4. (define-key key-translation-map [a-not-used-symbol-xxx-1] 
> [a-not-used-symbol-xxx-2])
> 5. (define-key key-translation-map [a-not-used-symbol-xxx-0] 
> [a-not-used-symbol-xxx-3])
> 6. C-h k w
> 7. check the *Messages* buffer, you will see
> 
>   <a-not-used-symbol-xxx-2> (translated from w) is undefined
> 
>   This is good.
> 8. C-h k C-x w
> 9. check the *Messages* buffer, you will see
> 
>   C-x <a-not-used-symbol-xxx-3> (translated from C-x w) is undefined
> 
>   I think this is a bug, which means local-function-key-map is not
>   used. The expected result should be
> 
>   C-x <a-not-used-symbol-xxx-2> (translated from C-x w) is undefined

Stefan, any comments?