Đoàn Trần Công Danh  [off-list ref] writes:

quoted

+mergetool.meld.hasAutoMerge::
+	Older versions of `meld` do not support the `--auto-merge` option.
+	Setting `mergetool.meld.hasOutput` to `true` tells Git to

s/hasOutput/hasAutoMerge/

Bikeshed opinion: I don't know if hasAutoMerge is a good name :)

I do not think "has" is a good choice for this one, even though
hasOutput may very well be a good one for "output".  As the
paragraph describes (below), this lets the user "avoid" using
"--auto-merge", even if the version of "meld" the user has does have
the automerge capability.

So perhaps say "mergetool.meld.useAutoMerge"; that will let the users
express exactly their wish---don't use it (false), do forcibly try
to use it (true), or use it when able (auto).