bug#45693: [two word expansion works, but write-abbrev-file destroys it]

[Eli Zaretskii <eliz@gnu.org>]

> From: Robert Pluim <rpluim@gmail.com>
> Date: Mon, 11 Jan 2021 11:49:41 +0100
> Cc: Lars Ingebrigtsen <larsi@gnus.org>, 45693@debbugs.gnu.org
> 
> Uwe Brauer <oub@mat.ucm.es> writes:
> 
> > The part 
> >         (define-abbrev-table 'my-abbrev-table
> >       '(
> >         ("a que" "a qué" nil :count 0))
> >       "Uwe's table"
> >       :regexp "\\(\\w+ \\w+\\)")
> >
> > Is gone!
> 
> Yes, and it gets worse. You can get around the 'setq
> local-abbrev-table' issue by using the ':parents' property:
> 
>     (define-abbrev-table 'fundamental-mode-abbrev-table
>       '(
>         ("asi" "así" nil :count 0))
>       "Fundamental"
>       :parents (list my-abbrev-table))
> 
>     (define-abbrev-table 'my-abbrev-table
>       '(
>         ("a que" "a qué" nil :count 0))
>       "Uwe's table"
>       :regexp "\\(\\w+ \\w+\\)")
> 
> 
> but write-abbrev-table then produces the following abbrev file:
> 
> ;;-*-coding: utf-8;-*-
> (define-abbrev-table 'fundamental-mode-abbrev-table
>   '(
>     ("asi" "así" nil :count 1)
>    ))
> 
> (define-abbrev-table 'my-abbrev-table
>   '(
>     ("a que" "a qué" nil :count 1)
>    ))
> 
> so write-abbrev-file doesnʼt write any of the properties specified in
> define-abbrev-table to the abbrev file.

So does it mean we had better avoid describing this "feature" in the
docs, until and unless it gets fixed to be more user-friendly?