bug#43866: 26.3; italian postfix additions

[Eli Zaretskii]

> From: Juri Linkov <juri@linkov.net>
> Cc: rpluim@gmail.com,  43866@debbugs.gnu.org
> Date: Wed, 14 Oct 2020 22:40:48 +0300
> 
> >> Yes, a new method might be useful as well.  But since such method can't
> >> be enabled all the time because such sequences as "= E" should be inserted
> >> literally in normal circumstances.  So such method needs to be enabled
> >> temporarily, and it takes more time to enable/disable it, while it's
> >> useful only to insert a single special character sometimes, it would be
> >> much easier to type some prefix key before typing "= E" to insert €
> >> when such a need arises occasionally.
> >
> > But turning an input method on and off is just 1 key, C-\, whereas
> 
> 1 key C-\ to enable, and 1 key C-\ to disable.  Also might need to select
> another input method name from 'C-u C-\' when also using other input methods.

Btw, input methods that use =E or E= could (and in many cases do) have
==E and E== to insert just "=E" and "E=", so no toggling is needed.

> > I don't think it's right that the only Unicode input method we have is
> > TeX -- that is great for TeX users, but many people don't use (La)TeX,
> > and will find it unintuitive to type the TeX sequences.
> 
> It seems the TeX input method requires typing whole Unicode names,
> or at least unambiguous parts of names, e.g. '\euro' inserts €,
> '\smile' inserts ⌣, but can't type '\smiling face with sunglasses'.
> Also I see a hex Unicode input method in uni-input.el that supports
> e.g. U<hex> or u<hex>, RFC1345 mnemonics in rfc1345.el,
> SGML entities in sgml-input.el.  So adding a X11 Compose method would be 
> handy.

Agreed.