symbol string_list_appendf() unused

> I strongly suspect that I haven't followed the discussion on
> the list closely enough, but your 'ma/unpack-trees-free-msgs'
> branch in 'pu', seems to define string_list_appendf() but then
> never call it. This is despite commit 40ebd6c7b0 ("string-list:
> provide `string_list_appendf()`", 2018-05-20) claiming that:
> 'The next commit will add a user'. ;-)
>
> Have I missed something?

> Ramsay Jones <ramsay@ramsayjones.plus.com> writes:
> 
>> I strongly suspect that I haven't followed the discussion on
>> the list closely enough, but your 'ma/unpack-trees-free-msgs'
>> branch in 'pu', seems to define string_list_appendf() but then
>> never call it. This is despite commit 40ebd6c7b0 ("string-list:
>> provide `string_list_appendf()`", 2018-05-20) claiming that:
>> 'The next commit will add a user'. ;-)
>>
>> Have I missed something?
> 
> Yes, I pushed out a tentative "how about doing it this way" update
> that goes alongside his version, making some solutions (including
> the function you found) he had obsoleted, yet without removing
> them.  That is what you saw on 'pu'.
> 
> There is a reroll by Martin that ties all the loose ends.