bug#66470: 29.1; Provide Urdu input method

[Eli Zaretskii <eliz@gnu.org>]

> From: Rahguzar <rahguzar@zohomail.eu>
> Cc: 66470@debbugs.gnu.org
> Date: Sat, 04 Nov 2023 15:23:10 +0100
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > Thanks.  This still has a few issues, though.
> >
> > First, when I try to activate the pashto-keyboard input method in
> > "emacs -Q", Emacs signals en error:
> >
> >   Symbol’s value as variable is void: pakistan-urdu-use-roman-digits
> >
> > I wonder how this worked for you.
> 
> I am sorry, I didn't test in a new fresh session and just evaluated the
> changed code in the session I was running. I have fixed this and a more
> serious issue which I didn't find for the same reason: as a result of
> defvars custom initialized those values to nil instead of their standard
> value. Now they are declared with a void value so that both byte
> compiler and custom are happy.
> 
> >> +(defcustom pakistan-urdu-prefixes
> >> +  '((diacritics "o")
> >> +    (poetic "G")
> >> +    (religious "M")
> >> +    (balochi-brahui "B")
> >> +    (pashto "P")
> >> +    (sindhi "C")
> >> +    (saraiki-hindko "X"))
> >> +  "Prefixes for `urdu-custom' input method."
> >> +  :set #'pakistan--set-prefixes
> >> +  :type '(repeat (list symbol string))
> >> +  :group 'pakistan-urdu-input)
> >
> > Each defcustom should have a :version tag stating the first version in
> > which it will appear.
> 
> Thanks, I have added the version now and removed the group, since I
> remembered from another thread that there preference is not to declare
> the group explicitly.
> 
> P.S. While testing this I also fixed another issue where
> `pakistan--regenerate-translations` will work the first time but not
> subsequent ones. The fix was to replace
> 
> (quail-install-map `(nil))
> 
> (quail-install-map (list nil))
> 
> and I don't understand why that makes a difference. But while trying to
> debug this I noticed that `quail-install-map` ignores the optional NAME
> argument and always installs the map in the current quail package. Is
> this the intended behavior? I have now added a
> 
> (quail-select-package "urdu-custom")
> 
> before the call to `quail-install-map` to make sure regenerating the
> input method in custom doesn't trample some other input method.

Did you forget to attach the updated patch?