Move the various seq_ functions, as well as std::(stable_)sort,
std::accumulate, std::transform, std::find, std::find_if to their C++20
std::ranges counterparts.
Cleanup the query running and handling the results.
- in threading, use stable_sort
- remove dead code
- fix indentation in a few places
- don't need Option in various run_... in mu-query.cc
Update various places for what we can do with C++20:
- ends_with / starts_with
- std::to_array
- using instead of typedef
- designated initializers
- "[[maybe_unused]]" instead of G_GNUC_UNUSED
Also remove some unnecessary 'static'
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 )
Not only check for duplicate subjects in *siblings*, also recurse into
the children. This remove some clutter from deeply nested threads.
Fixes: #2078.
Calculate the thread subject, that is, the subject of the (sub)thread _or_
empty if it's the same as the previous subject.
This is for the UI feature of _not_ showing the subject when it's just
repeating from the previous.
Rewrite the query machinery in c++:
- use an MSet decorator instead of the mu-msg-iter stuff
- use mu-query-decider to mark duplicates/unreadable/related messages
- use mu-query-threader to replace the older container/thread code
Algorithm did not substantially change, but the implementation details
did.
