bug#43866: 26.3; italian postfix additions

[Francesco Potortì]

Since the inception of mule, amyyears ago, I have set up an environment
where I switch between italian-postfix and american input methods.

Now I realise that I have made long time ago an addition to italian that
has never gone into emacs.

The rationale is that in Italy latin-9 should be used insterad of
latin1, which does not contain the euro symbol.  And that
italian-postfix should allow introducing the euro symbol.

Here is what I use in all machines where I have emacs:

================ start ================
;; Add the Euro symbol, use Latin-9 rather than Latin-1
(quail-define-package
 "italian-postfix" "Latin-9" "IT<" t
 "Italian (Italiano) input method with postfix modifiers

a` -> à    A` -> À    e' -> é    << -> «
e` -> è    E` -> È    E' -> É    >> -> »
i` -> ì    I` -> Ì    E= -> €    o_ -> º
o` -> ò    O` -> Ò               a_ -> ª
u` -> ù    U` -> Ù

Typewriter-style italian characters.

Doubling the postfix separates the letter and postfix: e.g. a`` -> a`
" nil t nil nil nil nil nil nil nil nil t)

(quail-define-rules
 ("A`" ?À) ("a`" ?à) ("E`" ?È) ("E'" ?É) ("E=" ?€) ("e`" ?è) ("e'" ?é)
 ("I`" ?Ì) ("i`" ?ì) ("O`" ?Ò) ("o`" ?ò) ("U`" ?Ù)
 ("u`" ?ù) ("<<" ?«) (">>" ?») ("o_" ?º) ("a_" ?ª)
 ("A``" ["A`"]) ("a``" ["a`"]) ("E``" ["E`"]) ("E''" ["E'"]) ("e``" ["e`"])
 ("e''" ["e'"]) ("I``" ["I`"]) ("i``" ["i`"]) ("O``" ["O`"]) ("o``" ["o`"])
 ("U``" ["U`"]) ("u``" ["u`"])
 ("<<<" ["<<"]) (">>>" [">>"]) ("o__" ["o_"]) ("a__" ["a_"])
 )
================ end ================

In GNU Emacs 26.3 (build 1, x86_64-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2020-05-17, modified by Debian built on x86-csail-01
Windowing system distributor 'The X.Org Foundation', version 11.0.12008000
System Description:     Debian GNU/Linux bullseye/sid

Important settings:
  value of $LC_COLLATE: it_IT.UTF-8
  value of $LC_CTYPE: it_IT.UTF-8
  value of $LC_NUMERIC: C
  value of $LANG: C.UTF-8
  locale-coding-system: utf-8-unix

Major mode: Mail

Minor modes in effect:
  filladapt-mode: t
  diff-auto-refine-mode: t
  desktop-save-mode: t
  epa-global-mail-mode: t
  epa-mail-mode: t
  shell-dirtrack-mode: t
  openwith-mode: t
  xterm-mouse-mode: t
  display-time-mode: t
  tooltip-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  abbrev-mode: t

Load-path shadows:
~/elisp/bhl hides /usr/share/emacs/site-lisp/bhl
/usr/share/emacs/site-lisp/elpa/debian-el-37/debian-autoloads hides 
/usr/share/emacs/site-lisp/elpa/gnuplot-mode-20141231/debian-autoloads
/usr/share/emacs/site-lisp/elpa/csv-mode-1.12/csv-mode-pkg hides 
/usr/share/emacs/site-lisp/elpa-src/csv-mode-1.12/csv-mode-pkg
/usr/share/emacs/site-lisp/elpa/csv-mode-1.12/csv-mode hides 
/usr/share/emacs/site-lisp/elpa-src/csv-mode-1.12/csv-mode
/usr/share/emacs/site-lisp/elpa/csv-mode-1.12/csv-mode-tests hides 
/usr/share/emacs/site-lisp/elpa-src/csv-mode-1.12/csv-mode-tests
/usr/share/emacs/site-lisp/elpa/csv-mode-1.12/csv-mode-autoloads hides 
/usr/share/emacs/site-lisp/elpa-src/csv-mode-1.12/csv-mode-autoloads
/usr/share/emacs/site-lisp/elpa/debian-el-37/debian-el hides 
/usr/share/emacs/site-lisp/elpa-src/debian-el-37/debian-el
/usr/share/emacs/site-lisp/elpa/debian-el-37/gnus-BTS hides 
/usr/share/emacs/site-lisp/elpa-src/debian-el-37/gnus-BTS
/usr/share/emacs/site-lisp/elpa/debian-el-37/preseed hides 
/usr/share/emacs/site-lisp/elpa-src/debian-el-37/preseed
/usr/share/emacs/site-lisp/elpa/debian-el-37/deb-view hides 
/usr/share/emacs/site-lisp/elpa-src/debian-el-37/deb-view
/usr/share/emacs/site-lisp/elpa/debian-el-37/debian-el-autoloads hides 
/usr/share/emacs/site-lisp/elpa-src/debian-el-37/debian-el-autoloads
/usr/share/emacs/site-lisp/elpa/debian-el-37/apt-utils hides 
/usr/share/emacs/site-lisp/elpa-src/debian-el-37/apt-utils
/usr/share/emacs/site-lisp/elpa/debian-el-37/debian-bug hides 
/usr/share/emacs/site-lisp/elpa-src/debian-el-37/debian-bug
/usr/share/emacs/site-lisp/elpa/debian-el-37/debian-el-pkg hides 
/usr/share/emacs/site-lisp/elpa-src/debian-el-37/debian-el-pkg
/usr/share/emacs/site-lisp/elpa/debian-el-37/apt-sources hides 
/usr/share/emacs/site-lisp/elpa-src/debian-el-37/apt-sources
/usr/share/emacs/site-lisp/elpa/debian-el-37/debian-autoloads hides 
/usr/share/emacs/site-lisp/elpa-src/debian-el-37/debian-autoloads
/usr/share/emacs/site-lisp/elpa/dictionary-1.10/dictionary hides 
/usr/share/emacs/site-lisp/elpa-src/dictionary-1.10/dictionary
/usr/share/emacs/site-lisp/elpa/dictionary-1.10/link hides 
/usr/share/emacs/site-lisp/elpa-src/dictionary-1.10/link
/usr/share/emacs/site-lisp/elpa/dictionary-1.10/dictionary-pkg hides 
/usr/share/emacs/site-lisp/elpa-src/dictionary-1.10/dictionary-pkg
/usr/share/emacs/site-lisp/elpa/dictionary-1.10/dictionary-autoloads hides 
/usr/share/emacs/site-lisp/elpa-src/dictionary-1.10/dictionary-autoloads
/usr/share/emacs/site-lisp/elpa/dictionary-1.10/connection hides 
/usr/share/emacs/site-lisp/elpa-src/dictionary-1.10/connection
/usr/share/emacs/site-lisp/elpa/gnuplot-mode-20141231/gnuplot hides 
/usr/share/emacs/site-lisp/elpa-src/gnuplot-mode-20141231/gnuplot
/usr/share/emacs/site-lisp/elpa/gnuplot-mode-20141231/gnuplot-mode-pkg hides 
/usr/share/emacs/site-lisp/elpa-src/gnuplot-mode-20141231/gnuplot-mode-pkg
/usr/share/emacs/site-lisp/elpa/debian-el-37/debian-autoloads hides 
/usr/share/emacs/site-lisp/elpa-src/gnuplot-mode-20141231/debian-autoloads
/usr/share/emacs/site-lisp/elpa/gnuplot-mode-20141231/gnuplot-context hides 
/usr/share/emacs/site-lisp/elpa-src/gnuplot-mode-20141231/gnuplot-context
/usr/share/emacs/site-lisp/elpa/gnuplot-mode-20141231/gnuplot-gui hides 
/usr/share/emacs/site-lisp/elpa-src/gnuplot-mode-20141231/gnuplot-gui
/usr/share/emacs/site-lisp/elpa/gnuplot-mode-20141231/gnuplot-mode-autoloads 
hides 
/usr/share/emacs/site-lisp/elpa-src/gnuplot-mode-20141231/gnuplot-mode-autoloads
/usr/share/emacs/site-lisp/elpa/markdown-mode-2.4/markdown-mode-autoloads hides 
/usr/share/emacs/site-lisp/elpa-src/markdown-mode-2.4/markdown-mode-autoloads
/usr/share/emacs/site-lisp/elpa/markdown-mode-2.4/markdown-mode hides 
/usr/share/emacs/site-lisp/elpa-src/markdown-mode-2.4/markdown-mode
/usr/share/emacs/site-lisp/elpa/markdown-mode-2.4/markdown-mode-pkg hides 
/usr/share/emacs/site-lisp/elpa-src/markdown-mode-2.4/markdown-mode-pkg
/usr/share/emacs/site-lisp/flim/md4 hides /usr/share/emacs/26.3/lisp/md4
/usr/share/emacs/site-lisp/flim/hex-util hides 
/usr/share/emacs/26.3/lisp/hex-util
~/elisp/octave hides /usr/share/emacs/26.3/lisp/progmodes/octave
/usr/share/emacs/site-lisp/flim/ntlm hides /usr/share/emacs/26.3/lisp/net/ntlm
/usr/share/emacs/site-lisp/flim/hmac-md5 hides 
/usr/share/emacs/26.3/lisp/net/hmac-md5
/usr/share/emacs/site-lisp/flim/sasl-ntlm hides 
/usr/share/emacs/26.3/lisp/net/sasl-ntlm
/usr/share/emacs/site-lisp/flim/sasl-digest hides 
/usr/share/emacs/26.3/lisp/net/sasl-digest
/usr/share/emacs/site-lisp/flim/sasl hides /usr/share/emacs/26.3/lisp/net/sasl
/usr/share/emacs/site-lisp/flim/sasl-cram hides 
/usr/share/emacs/26.3/lisp/net/sasl-cram
/usr/share/emacs/site-lisp/flim/hmac-def hides 
/usr/share/emacs/26.3/lisp/net/hmac-def

Features:
(shadow emacsbug apropos vc-bzr mode-local calccomp calc-map calc-alg
calc-vec calc-aent calc-menu calc-yank calc-ext reporter debian-bug
anything-config anything woman cl etags two-column iso-transl org-rmail
org-mhe org-irc org-info org-gnus nnir gnus-sum gnus-group gnus-undo
gnus-start gnus-cloud nnimap nnmail mail-source utf7 netrc nnoo
gnus-spec gnus-int gnus-range gnus-win gnus nnheader org-docview
org-bibtex org-bbdb org-w3m org-element avl-tree generator org org-macro
org-footnote org-pcomplete org-list org-faces org-entities org-version
ob-emacs-lisp ob ob-tangle org-src ob-ref ob-lob ob-table ob-keys ob-exp
ob-comint ob-core ob-eval org-compat org-macs org-loaddefs ispell xref
project eieio-opt speedbar sb-image ezimage dframe completion dos-w32
find-cmd grep find-dired find-func pp cl-print help-fns radix-tree
unrmail calc calc-loaddefs calc-macs deb-view network-stream starttls
url-http tls gnutls url-gw nsm url-cache url-auth url url-proxy
url-privacy url-expand url-methods url-history url-cookie w3m-filter
w3m-form w3m-cookie url-domsuf w3m-bookmark w3m-tabmenu w3m-session w3m
mailcap doc-view image-mode w3m-hist w3m-fb bookmark-w3m w3m-ems
wid-edit w3m-ccl ccl w3m-favicon w3m-image w3m-proc w3m-util cal-move
cal-x dabbrev arc-mode archive-mode macros locate edmacro kmacro rect
tabify man shr-color timezone rmailsort rmailedit url-util shr svg xml
browse-url add-log mailalias rmailout rmailkwd time-stamp cl-extra
dired-aux wdired misearch multi-isearch make-mode jka-compr vc-git
diff-mode markdown-mode subr-x noutline outline easy-mmode generic
sh-script executable tex-mode compile vc-dir ewoc vc vc-dispatcher
vc-svn json-mode rx bibtex-style vc-filewise vc-rcs octave texinfo pcase
bibtex mhtml-mode css-mode smie color js json map imenu cc-mode cc-fonts
cc-guess cc-menus cc-cmds cc-styles cc-align cc-engine cc-vars cc-defs
sgml-mode dom qp rmailmm message rmc puny rfc822 mml mml-sec gnus-util
mm-decode mm-bodies mm-encode mailabbrev gmm-utils mailheader mail-parse
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warnings rmailsum rmail rmail-loaddefs sendmail rfc2047 rfc2045
ietf-drums mm-util mail-prsvr mime-compose epa-mail mail-utils epa
derived epg view holidays hol-loaddefs appt diary-lib diary-loaddefs
cal-menu calendar cal-loaddefs tramp tramp-compat tramp-loaddefs
trampver ucs-normalize shell pcomplete comint ring parse-time
format-spec advice bhl visual-fill-column switch-to-shell openwith
hi-lock xt-mouse time-date ffap thingatpt scroll-in-place filladapt
ansi-color time quail help-mode dired-x dired dired-loaddefs generic-x
disp-table finder-inf info debian-el package easymenu epg-config
url-handlers url-parse auth-source cl-seq eieio eieio-core cl-macs
eieio-loaddefs password-cache url-vars seq byte-opt gv bytecomp
byte-compile cconv cl-loaddefs cl-lib w3m-load mule-util tooltip eldoc
electric uniquify ediff-hook vc-hooks lisp-float-type 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 elisp-mode lisp-mode
prog-mode register page menu-bar rfn-eshadow isearch timer select
scroll-bar mouse jit-lock font-lock syntax facemenu font-core
term/tty-colors frame 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 charscript charprop case-table epa-hook jka-cmpr-hook
help simple abbrev obarray minibuffer cl-preloaded nadvice loaddefs
button faces cus-face macroexp files text-properties overlay sha1 md5
base64 format env code-pages mule custom widget hashtable-print-readable
backquote threads dbusbind inotify lcms2 dynamic-setting
font-render-setting x-toolkit x multi-tty make-network-process emacs)

Memory information:
((conses 16 859419 104132)
 (symbols 48 61004 1)
 (miscs 40 1838 1970)
 (strings 32 207996 12197)
 (string-bytes 1 6110429)
 (vectors 16 83287)
 (vector-slots 8 2187469 111622)
 (floats 8 914 1312)
 (intervals 56 48134 1037)
 (buffers 992 180))