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

From: Wenocur
Subject: bug#29920: 25.3; term-mode f-keys
Date: Sun, 31 Dec 2017 14:13:17 -0500

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.

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))))

(defun send-f-key ()
  "Send an f-key escape sequence to the sub-process."
  (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)))))

In GNU Emacs 25.3.1 (x86_64-apple-darwin15.6.0, NS appkit-1404.47 Version 
10.11.6 (Build 15G1611))
 of 2017-12-23 built on 3c0754310e53
Windowing system distributor 'Apple', version 10.3.1404
Configured features:

Important settings:
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix

Major mode: Python

Minor modes in effect:
  diff-auto-refine-mode: t
  magit-auto-revert-mode: t
  auto-revert-mode: t
  global-git-commit-mode: t
  async-bytecomp-package-mode: t
  jedi-mode: t
  auto-complete-mode: t
  TeX-PDF-mode: t
  shell-dirtrack-mode: t
  delete-selection-mode: t
  tooltip-mode: t
  global-eldoc-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent messages:
Mark set
next-line: End of buffer
Mark set
scroll-up-command: End of buffer
Making completion list... [6 times]
Making completion list... [2 times]
next-line: End of buffer
Making completion list...

Load-path shadows:
/Users/wenocur/.emacs.d/elpa/flim-20161210.1728/md4 hides 
/Users/wenocur/.emacs.d/elpa/flim-20161210.1728/hex-util hides 
/Users/wenocur/.emacs.d/elpa/flim-20161210.1728/sasl hides 
/Users/wenocur/.emacs.d/elpa/flim-20161210.1728/sasl-ntlm hides 
/Users/wenocur/.emacs.d/elpa/flim-20161210.1728/sasl-digest hides 
/Users/wenocur/.emacs.d/elpa/flim-20161210.1728/sasl-cram hides 
/Users/wenocur/.emacs.d/elpa/flim-20161210.1728/ntlm hides 
/Users/wenocur/.emacs.d/elpa/flim-20161210.1728/hmac-md5 hides 
/Users/wenocur/.emacs.d/elpa/flim-20161210.1728/hmac-def hides 
/Users/wenocur/.emacs.d/elpa/let-alist-1.0.5/let-alist hides 

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Memory information:
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 (symbols 48 76240 45)
 (miscs 40 663 3464)
 (strings 32 270981 56813)
 (string-bytes 1 6199772)
 (vectors 16 82065)
 (vector-slots 8 2098783 180474)
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 (intervals 56 20421 56971)
 (buffers 976 62))

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