try to purge sync entries based on which messages are *actually*
expunged, rather than those that are *expected* to be expunged.
to save network bandwidth, the IMAP driver doesn't report all expunges,
so some entry purges would be delayed - potentially indefinitely, e.g.,
when only --pull-new --push is used, or Trash isn't used (nor
ExpungeSolo, prospectively). so keep a fallback path to avoid this.
make sure that an expiration calculation run is performed if ongoing
expiration transactions have been loaded from the journal. this has the
nice side effect of centralizing the regular trigger condition as well.
flags_set_p2() is also adjusted to query S_NEXPIRE only if an expiration
is actually ongoing, like the flag propagation submission loop already
did.
this went unnoticed, because expiration upon arrival of new messages
wasn't autotested at all - despite being the common case.
re-introduce newmaxuid, but now it's not used at all until the state
is committed. this simplifies the new-message loop, esp. in view of a
soon significantly increased number of branches in it.
- print on which side we're upgrading a placeholder. as a side effect,
this moves some magic out of upgrade_srec().
- don't use past tense for something that is only about to happen
- don't print status of every sync entry affected by journal replay -
the entry load already prints it, and relevant operations print the
new status. also, it was inconsistent with not printing the entry's
old flags.
it makes no sense to trash the placeholders, and in fact the common
case is that they are deleted due to being replaced by the full
message.
a separate S_PURGED state needed to be added, as S_PURGE needs to be
reset after setting F_DELETED (so the operation doesn't count as still
pending after journal replay), yet trashing needs an indicator. logging
is now done via a separate command, as piggy-backing it on flag updates
just makes things less legible for no benefit.
this is mostly academical, as trashing being done on the side where
placeholders reside is rather unlikely.
this is a lot more legible, and makes it possible to insert values in
the middle without churn.
i didn't find a way to do this with the pre-processor, so we now have
another code generator.
we now use the $< make variable, which requires gmake on netbsd < 9.0,
and possibly other systems with an ancient make.
