2024-01-02: Site is back on track, self-hosted on a rpi because you get the Internet you fund.
2025-02-06: Oh well, some power grid issues caused the rpi to reboot, I really should configure uwsgi to restart automatically --'

58f202ac-22cf-11d1-b12d-002035b29092
Seen in rfc4918

Seen in rfc4918

Seen in RFC 4918
Counts : rfc4918:2
RFC 4918                         WebDAV                        June 2007


10.4.6.  Example - No-tag Production

     If: (<urn:uuid:181d4fae-7d8c-11d0-a765-00a0c91e6bf2>
       ["I am an ETag"])
       (["I am another ETag"])

   The previous header would require that the resource identified in the
   Request-URI be locked with the specified lock token and be in the
   state identified by the "I am an ETag" ETag or in the state
   identified by the second ETag "I am another ETag".

   To put the matter more plainly one can think of the previous If
   header as expressing the condition below:

     (
       is-locked-with(urn:uuid:181d4fae-7d8c-11d0-a765-00a0c91e6bf2) AND
       matches-etag("I am an ETag")
     )
     OR
     (
       matches-etag("I am another ETag")
     )

10.4.7.  Example - Using "Not" with No-tag Production

     If: (Not <urn:uuid:181d4fae-7d8c-11d0-a765-00a0c91e6bf2>
     <urn:uuid:58f202ac-22cf-11d1-b12d-002035b29092>)

   This If header requires that the resource must not be locked with a
   lock having the lock token
   urn:uuid:181d4fae-7d8c-11d0-a765-00a0c91e6bf2 and must be locked by a
   lock with the lock token
   urn:uuid:58f202ac-22cf-11d1-b12d-002035b29092.

10.4.8.  Example - Causing a Condition to Always Evaluate to True

   There may be cases where a client wishes to submit state tokens, but
   doesn't want the request to fail just because the state token isn't
   current anymore.  One simple way to do this is to include a Condition
   that is known to always evaluate to true, such as in:

     If: (<urn:uuid:181d4fae-7d8c-11d0-a765-00a0c91e6bf2>)
       (Not <DAV:no-lock>)

   "DAV:no-lock" is known to never represent a current lock token.  Lock
   tokens are assigned by the server, following the uniqueness
   requirements described in Section 6.5, therefore cannot use the
   "DAV:" scheme.  Thus, by applying "Not" to a state token that is



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