bug#44466: 27.1; quail input fails at read-only boundary

[Eli Zaretskii]

> From: Evgeny Zajcev <lg.zevlg@gmail.com>
> Date: Sun, 8 Nov 2020 01:24:26 +0300
> Cc: dick <dick.r.chiang@gmail.com>, 44466@debbugs.gnu.org
> 
> What I want with that patch is that if some key is pressed on read-only area 
> in non-read-only buffer, then
> quail should do what it does as if buffer marked as read only, i.e. no input 
> method translations are done, and
> all single char bindings continue to work.

When an input method is used in a read-only buffer, Emacs barfs
because it doesn't allow inserting text into such a buffer.  It
doesn't insert the untranslated character, as what your patch did.

> Possible we need to check front-stickyness of the char at point along with 
> 'read-only property:
> 
> ..
>                    (and (get-char-property (point) 'read-only)
>                         (get-char-property (point) 'front-sticky)))

Does this solve the problem in this case?