bug#52918: 29.0.50; to make use of ucd/Unihan_Readings.txt for kDefinition entry

[Van Ly <van.ly@sdf.org>]

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Hello,

I was looking in the master's emacs/admin/notes subdirectory and 
found the unicode file.  It has a list of files from the ucd and has 
left out:

   . Unihan_Readings.txt

Like how quail-show-key helps by showing in the minibuffer the input 
sequence needed to type a character for a specific input method, can 
there be a function called quail-show-unihan that exposes in the 
minibuffer the kDefinition entry associated with the East Asian 
character from ucd/Unihan_Readings.txt?

-- 
vl

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In GNU Emacs 29.0.50 (build 1, aarch64-unknown-linux-gnu, X toolkit, cairo version 1.16.0)
 of 2021-12-28 built on charlie
Repository revision: 208ae993bac6f011f178befbeeb8104c0f63499f
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12011000
System Description: Debian GNU/Linux 11 (bullseye)

Configured using:
 'configure
 --prefix=/b/b/Blah/emacs-2021-12-28
 --with-x-toolkit=lucid --without-toolkit-scroll-bars --without-xft
 --with-native-compilation --without-compress-install
 --without-mailutils --without-xaw3d --without-selinux'

Configured features:
ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GPM GSETTINGS HARFBUZZ JPEG
LCMS2 LIBOTF LIBSYSTEMD LIBXML2 M17N_FLT MODULES NATIVE_COMP NOTIFY
INOTIFY PDUMPER PNG RSVG SECCOMP SOUND THREADS TIFF X11 XDBE XIM XPM
LUCID ZLIB

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

Major mode: Info

Minor modes in effect:
  shell-dirtrack-mode: t
  tooltip-mode: t
  global-eldoc-mode: t
  show-paren-mode: t
  electric-indent-mode: t
  mouse-wheel-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
  buffer-read-only: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t

Load-path shadows:
None found.

Features:
(shadow mail-extr emacsbug message yank-media rmc rfc822 mml mml-sec epa
derived epg rfc6068 epg-config mm-decode mm-bodies mm-encode mail-parse
rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045
ietf-drums ind-util quail cl-print ffap sort find-dired rect kmacro
facemenu two-column cl-extra shortdoc help-fns radix-tree help-mode
timeclock whitespace tab-line hl-line display-line-numbers apropos
mule-util info misearch multi-isearch shell pcomplete comint ansi-color
ring eww xdg url-queue thingatpt shr pixel-fill kinsoku svg xml dom
browse-url url url-proxy url-privacy url-expand url-methods url-history
url-cookie url-domsuf url-util url-parse auth-source cl-seq eieio
eieio-core cl-macs eieio-loaddefs password-cache json map url-vars
mailcap puny mm-url gnus nnheader gnus-util time-date mail-utils mm-util
mail-prsvr cus-edit cus-start cus-load wid-edit bug-reference noutline
outline view dired-aux dired dired-loaddefs bookmark seq gv subr-x
byte-opt bytecomp byte-compile cconv text-property-search pp vc-git
diff-mode easy-mmode vc-dispatcher cl-loaddefs cl-lib wombat-theme
iso-transl tooltip eldoc paren electric uniquify ediff-hook vc-hooks
lisp-float-type elisp-mode mwheel term/x-win x-win term/common-win x-dnd
tool-bar dnd fontset image regexp-opt fringe tabulated-list replace
newcomment text-mode lisp-mode prog-mode register page tab-bar menu-bar
rfn-eshadow isearch easymenu timer select scroll-bar mouse jit-lock
font-lock syntax font-core term/tty-colors frame minibuffer cl-generic
cham georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao
korean japanese eucjp-ms cp51932 hebrew greek romanian slovak czech
european ethiopic indian cyrillic chinese composite emoji-zwj charscript
charprop case-table epa-hook jka-cmpr-hook help simple abbrev obarray
cl-preloaded nadvice button loaddefs faces cus-face macroexp files
window text-properties overlay sha1 md5 base64 format env code-pages
mule custom widget keymap hashtable-print-readable backquote threads
dbusbind inotify lcms2 dynamic-setting system-font-setting
font-render-setting cairo x-toolkit x multi-tty make-network-process
native-compile emacs)

Memory information:
((conses 16 243241 13740)
 (symbols 48 13426 1)
 (strings 32 76179 7118)
 (string-bytes 1 2010021)
 (vectors 16 46033)
 (vector-slots 8 1404983 181934)
 (floats 8 175 208)
 (intervals 56 6466 5425)
 (buffers 992 39))