seems that this structure has been unused since
e75ab631a4 and confuses
newbies trying to figure out exactly what the commit
structure is (which is how I came across this)
Includes patched versions of ames' and clay's +load arms.
In clay, we do a dumb ;; hack to get the state to adapt properly. This
shouldn't be needed ($case had an extra... case added to it, old ones
should still nest), and so we should revisit the logic there to make it
cleaner/better before release.
Previously, if the pointer for a syntax error pointed to the end of the file
(and the file ended in a newline) the code snippet rendering would try to
display a line _beyond_ the end of the file, causing a crash.
Here, we detect that case, and display `<<end of file>>` instead.
Instead of having a separate "busy" flag and pending scry request state,
we now have a single "busy" unit that, if there is a pending request,
contains details about the pending request. In the ames case, this is
simply %ames. But in the scry case, it contains all the details we need
to cancel the request, timer, or both when needed.
Additionally, we now make sure to always cancel the scry timeout timer
whenever we get a scry response.
Previously, when the scry timeout fired and we retried the request with
ames, we would always start over from the very first request (ie,
fetching the ""manifest"" containing the files we need to download).
This behavior is not correct in the case where we had already received
that initial response, and were now fetching individual files. So here,
if that's the case, we simply call into +work after marking this peer as
having known-broken scry, which will resume work as appropriate.
(The actual bug here that broke the fallback behavior entirely was the
busy flag not getting unset. We now clean it up properly.)
We also move setting of the sad timer into +retry-with-ames, instead of
doing it at each individual callsite. (In fact, one of the callsites was
missing this behavior.)
Similar to how %x on the empty desk was already treated specially. We
continue supporting %d on non-empty desks, but do add a print marking it
as deprecated.
The previous commit already started treating the 0v0 commit as
equivalent to the 0 aeon (that is, never-real root), so we should give
the 0v0 commit for all 0 aeons.
Instead of scrying for revisions of files at paths in desks, we now scry
for data corresponding to a given lobe. This removes concerns of aeons,
paths, and other such frivolities, and lets us ask for the specific data
we need regardless of where it may live.
How we're supposed to answer permissioning questions around data this
way remains to be seen.
This converts the blob store from having deltas, directs, and
tombstones, to just having direct pages. This simplifies a lot of code,
since we don't have to constantly ensure that deltas always have their
parent available.
This removes the hardcoded text diff logic from clay, which was
previously required for bootstrapping.
Over the wire, we handle both old and new requests and responses
transparently, so communication is normal in both directions across
ships which do or do not have this change.
