The transport fix stops the truncation that caused #76, but the save path
had no answer for a baseline that arrives incomplete. It is neither
unknown nor empty, so every existing guard passes it through: it parses
into a shorter rule list that looks exactly like a script with fewer
rules, and saving writes that back over the real one.
Check the script against the shape the generator emits instead. Every
rule comment parses, every enabled rule has an if and a closed body under
it, every block ends with a blank line. Structural rather than a
re-serialize-and-compare, so a script written by an older version whose
serializer differed is still editable.
The rule editor reports a short script as unreadable rather than showing
the rules that happened to parse, since a list that looks complete over a
script that is not is the most dangerous thing it could offer.
A cut at the end of a complete rule block is still a valid shorter script
and cannot be told apart from one; that residual is the proxy's to cover.
Adding a filter from a message reported success while the script on the
server never held more than two rules (#76). Rules were being destroyed,
and the confirmation was a lie.
Three links, each defensible alone:
1. load() recorded a *failed* blob fetch as `contents[id] = ""`.
2. sieveToRules("") returns [] -- "this script has no rules", which is
indistinguishable from "we could not read this script".
3. Saving rewrites the whole script from that baseline, so every rule
already in it was deleted. The write itself succeeded, which is why
the UI said so.
No fetch failure was even required: rules() did `contents[id] ?? ""`, so
a script whose content had not loaded yet read as empty too. And
saveScript cached the content it had just written and then called
load(), which replaced the whole map -- discarding it if the refetch
came back short.
The fix is to keep "unknown" and "empty" apart at every step:
- a failed fetch leaves the key absent rather than storing ""
- load() merges rather than replacing, so a reload cannot throw away
what saveScript just wrote
- rules() returns null for content it does not have, which every
caller already treats as "do not touch this script"
- saveRules refuses outright when the baseline is unknown. Refusing is
recoverable; overwriting is not.
rules() now also reports whether the script was read, because "written
by hand" and "could not be read" want different advice -- one is
permanent, the other is a reload away, and telling someone the wrong one
sends them hunting for a problem they do not have.
Ruled out on the way: the rule codec round-trips fine, eight rules in
and eight out. sieveToRules reads the `# rule:` JSON comments rather
than parsing Sieve, so the generated script's shape was never the issue.
"Send failed: Invalid property or value." is Stalwart's description for
invalidProperties, and on its own it says nothing about what to fix. The
SetError also carries a `properties` array naming the offending fields, which
every call site was discarding.
setErrorMessage appends them, and the 35 places that surfaced a SetError -
send, save draft, mailboxes, calendars, contacts, sieve, files, signature
images, sharing - now go through it.
jcoffey-dev