Re: [PATCH] config.mak.dev: enable -Wunused-function

Ramsay Jones [off-list ref] writes:

I haven't looked too deeply, but this seems to be caused by
Junio's commit 42c89ea70a ("SQUASH??? - convert the other user of
string-list as db", 2018-10-17) which removes a call to the
add_existing() function - the subject of the warning.

That is very understandable and it is immediately obvious to me that
the unused-function warning is being useful there ;-)