Ensure the metadata (dirstamps) for messages are only written / committed _after_
the accompanying message have been written / committed.
This avoids missing updates when indexing gets terminated unexpectedly.
The 'processed' statistic for indexing was more-or-less synonymous for
'updated'; let's change to something more useful, 'checked' which roughly means
the number of messages checked for updates (typically a cheap timestamp check).
Update all cc code using .clang-format; please do so as well for future PRs
etc.; emacs has a handy 'clang-format' mode to make this automatic.
For comparing old changes with git blame, we can disregard this one using
--ignore-rev
(see https://www.moxio.com/blog/43/ignoring-bulk-change-commits-with-git-blame )
Implement a new message indexer consisting of a single-threaded scanner
and a multi-threaded indexer.
This allows for a number of optimizations as well as background
indexing, though this initial version should be behave similar to the
old indexer.
Dirk-Jan C. Binnema
Jonas Bernoulli