standards-key-census.txt

To figure out the the extent of the problem with mixed-case standard
keys, I wanted to know all standard keys out there.  Here is a hack to
do that if you have a local connection to a DaCHS rr RegTAP
implementation:

psql gavo
\copy (select string_agg(oaixml, '') from rr.oairecs where ivoid like 'ivo://ivoa.net%') to ivorecs.xml;

Exit, psql, edit ivorecs.xml and give it an arbitrary root element.
Also replace the literal "\n".

Then:

xmlstarlet sel -t -c //key/name ivorecs.xml

Don't worry about the undefined namespace prefixes -- we don't need them
here.

With a bit of RE trickery, you'll get a list of standard keys.  In July
2023, we had:

v2.0
hipslist-1.0
hips-1.0
core-1.1
table-1.0
1.0
BasicAA
tls-with-password
tls-with-password
tls-with-certificate
cookie
saml2.0
OAuth
OpenID
upload-inline
upload-http
upload-https
upload-ftp
output-votable-td
output-votable-binary
output-votable-binary2
features-udf
features-adqlgeo
features-adql-string
features-adql-common-table
features-adql-sets
features-adql-type
features-adql-unit
features-adql-offset