bug#29924: [PATCH] Preserve special abbrev properties when writing

[Allen Li <vianchielfaura@gmail.com>]

On Fri, Jan 26, 2018 at 6:12 PM, Noam Postavsky
<npostavs@users.sourceforge.net> wrote:
> Allen Li <vianchielfaura@gmail.com> writes:
>
>> Apologies, the original patch is incorrect because define-abbrev
>> requires passing :count as a keyword argument unlike the obsolete
>> calling convention.
>>
>> Attached is a new patch, which unfortunately does not preserve the old
>> abbrev file writing format. However, any recent version of Emacs will
>> be able to accept this format for define-abbrev, and the previously
>> written abbrev file format is documented as obsolete, so now is as
>> good a time as any.
>
> I think it would be helpful to have a basic test to ensure we preserve
> round-tripping.

What round-tripping are you referring to?