Re: [PATCH 4/4] CodingGuidelines: recommend singular they

"Derrick Stolee via GitGitGadget" [off-list ref] writes:

To futher justify singular "they" as an acceptable grammatical concept,
I include the careful research of brian m. carlson who collected their
thoughts on this matter [2] (lightly edited):

The use of "their" here I found going overboard, given that (1) it
is outside the topic of this change, where you are not referring to
a non-specific person, and (2) as Brian's siglines indicate, the
preferred pronouns for the particular person you are referring to is
"he/him or they/them".

+ When referring to an anonymous user, use singular "they/them" pronouns
+ as opposed to choosing between "he/him" and "she/her". Do not use more
+ complicated constructs such as "he or she" or "s/he". This recommendation
+ also applies to code comments and commit messages.

Short and sweet.