newaliases changed?

From: Gary Aitken <freebsd_at_dreamchaser.org>
Date: Mon, 05 Feb 2024 23:15:02 UTC 
Recently upgraded from 12.4 to 13.2
When I run newaliases, I get a bunch of complaints for things that
used to work fine:
/etc/mail/aliases: line 88: goodfriends: ... missing value for alias
/etc/mail/aliases: line 89: Non-continuation line starts with space

The entries in question look like this:

#friends: (bad addrs)
#         foo@bentley.unco.edu, #      bentley.unco.edu: host not found
#         baz@kcs.keene.k12.ny.us

goodfriends:
          foo1@blackfoot.net, \
          foo2@comcast.net, \
          foo3@aol.com, \
          foo4@fatquailfarm.com, \
          foo5@sbcglobal.net, \
          foo6@blackfoot.net, \
          foo7@tnc.org, \
          foo8@aol.com, \
          foo9@hotmail.com, \
          foo10@blackfoot.net

This is a cut and paste, obviously; the whitespace is all blanks.
huh?
Thanks for any tips.

Gary