Re: [PATCH v5 01/12] doc: use 'symmetric difference' consistently

Jakub Narębski [off-list ref] writes:

quoted

 --left-right::
-	Mark which side of a symmetric diff a commit is reachable from.
+	Mark which side of a symmetric difference a commit is reachable from.
 	Commits from the left side are prefixed with `<` and those from
 	the right with `>`.  If combined with `--boundary`, those
 	commits are prefixed with `-`.

That's very nice that two^W three related options, namely --left-only,
--right-only and --left-right now use the same notation.

I guess that "symmetric range" was to mean "symmetric difference range".

By "symmetric difference", we mean a "set difference" operation that
is symmetric.  Contrasting with asymmetric difference that gives a
set of elements that belong to set A but do not belong to set B
(i.e. B..A), symmetric difference of set A and set B gives a set of
elements that belong to either set A alone or set B alone but not
both (i.e. A...B).

So if you really want a fully spelled name, we would not want to
call it with a name with "range".  It is "symmetric set difference",
and "symmetric difference" in the updated sentence is a short-hand
for that.