GnuPG no longer installs a ~/.gnupg/options file. Is it missing?
No. The ~/.gnupg/options file has been renamed to ~/.gnupg/gpg.conf for new installs as of version 1.1.92. If an existing ~/.gnupg/options file is found during an upgrade it will still be used, but this change was required to have a more consistent naming scheme with forthcoming tools. An existing options file can be renamed to gpg.conf for users upgrading, or receiving the message that the “old default options file” is ignored (occurs if both a gpg.conf and an options file are found).