bug#29920: 25.3; term-mode f-keys

bug#29920: 25.3; term-mode f-keys

[Wenocur]

To trigger the problem:

Start term-mode with a visual text-mode application that requires f-keys
to function. In my case, I was using aws-shell.

Leave the terminal in char mode.

Attempt to use f-keys to operate the application.

Symptom:
The f-keys operate as they would in any other mode.

Example solution:
(defvar f-key-defs
  (let ((fkeys nil))
    (dotimes (i 12)
      (push (cons (intern (concat "f" (int-to-string (1+ i))))
                  (format "\e[%d~" (+ i (if (> i 4) 12 11))))
            fkeys))
    fkeys))

(defun send-f-key ()
  "Send an f-key escape sequence to the sub-process."
  (interactive)
  (term-send-raw-string (alist-get last-input-event f-key-defs)))

(dotimes (i 12)
  (define-key term-raw-map
    (vector (intern (concat "f" (int-to-string (1+ i)))))
    #'send-f-key))



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bug#29920: 25.3; term-mode f-keys

[Lars Ingebrigtsen]

Wenocur <awenocur@gmail.com> writes:

> To trigger the problem:
>
> Start term-mode with a visual text-mode application that requires f-keys
> to function. In my case, I was using aws-shell.
>
> Leave the terminal in char mode.
>
> Attempt to use f-keys to operate the application.
>
> Symptom:
> The f-keys operate as they would in any other mode.

(This bug report unfortunately got no response at the time.)

I don't have aws-shell here, but if I understand you correctly, you're
pointing out that

emacs -Q
M-x term RET RET

gives you a mode where the function keys have their default bindings
(i.e., <f3> is `kmacro-start-macro-or-insert-counter') instead of
sending the function keys to the program running in the sub-process?

This does seem rather odd -- term-mode is rather aggressive about
rebinding just about anything, but leaves the function keys alone.  Does
anybody know whether this is on purpose, or is it just because few
terminal programs use the function keys?

I think it would make conceptual sense for term-mode to pass the
function keys along to the running program.  Does anybody object to
making such a change?

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

bug#29920: 25.3; term-mode f-keys

[Lars Ingebrigtsen]

Lars Ingebrigtsen <larsi@gnus.org> writes:

> I think it would make conceptual sense for term-mode to pass the
> function keys along to the running program.  Does anybody object to
> making such a change?

I've now fixed this in Emacs 29 (but disabled by default).

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no