phabricator: add debug logging to show previous node values in `phabsend` This isn't real useful here, but was very useful showing how `phabsend --fold` handles commits created by `hg fold` and `hg split`. It introduces a new debug function and flag instead of using `ui.debug()`, because `--debug` prints out all of the API chatter. Differential Revision: https://phab.mercurial-scm.org/D8389

rust: update README with new information about the Re2 path Differential Revision: https://phab.mercurial-scm.org/D8452

rust: add option of static linking a local Re2 install Previously, only dynamically linking the system-wide install was possible. We force the user to provide one to prevent hard-to-track errors. Differential Revision: https://phab.mercurial-scm.org/D8451

templatekw: cache mergestate even if merge is not ongoing While playing with eBPF, I noticed .hg/merge/state{,2} files were tried to open() for each revision. That's not healthy. Let's cache the "inactive" state as well.

revset: remove explicit sort() from unstable() The instability should be dealt with by baseset.__init__(), and the returned smartset is ordered by 'subset &' anyway.

revset: implement a simple 'foo#generations' expression The result of this expression is equivalent to 'foo#g[:]': all reachable ancestors and descendants of a revset foo. While not very useful functionality on its own, its implementation can be tested and revset.relations dict can be easily used by extensions to add other non-subscript relations. Differential Revision: https://phab.mercurial-scm.org/D8394

revset: rename generationsrel() to generationssubrel() This highlights that this is an implementation of 'x#y[z]' relation subscript operator as opposed to 'x#y' relation operator. Differential Revision: https://phab.mercurial-scm.org/D8393

manifest: leave a TODO where we may have more work for sha1 portability Differential Revision: https://phab.mercurial-scm.org/D8375

manifest: add test for long hashes Differential Revision: https://phab.mercurial-scm.org/D8373

manifest: remove a final 40-byte assumption from pure-python parser Differential Revision: https://phab.mercurial-scm.org/D8372

manifest: fix yet another 20-byte-hash assumption Differential Revision: https://phab.mercurial-scm.org/D8371

manifest: fix another pure-parsing 20-byte assumption Differential Revision: https://phab.mercurial-scm.org/D8370

manifest: teach treemanifest about long hashes Differential Revision: https://phab.mercurial-scm.org/D8369

manifest: start removing 40-byte hash restrictions from C code Differential Revision: https://phab.mercurial-scm.org/D8368

manifest: remove a 20-byte-hash assumption from pure manifest parsing This is almost certainly slower, but it shouldn't be by much. We need to do this for the eventual hash transition, no matter what that looks like. Differential Revision: https://phab.mercurial-scm.org/D8367

revset: mark `extinct()` experimental Differential Revision: https://phab.mercurial-scm.org/D8407

revset: mark `successors()` experimental Differential Revision: https://phab.mercurial-scm.org/D8406

revset: mark `obsolete()` experimental I assume not marking it was unintentional, since the obsolete concept it still experimental. Differential Revision: https://phab.mercurial-scm.org/D8405

nodemap: access the mmap opener option using bytes The key is bytes and need to be accessed s such. Differential Revision: https://phab.mercurial-scm.org/D8413

nodemap: rename a variable to prevent shawoding "_" This will make pyflakes happy with the next changeset. Differential Revision: https://phab.mercurial-scm.org/D8412

rust-chg: indent process_message() to prepare mass rewrite to futures-0.3 I'll start upgrading the codebase to modern async/await-based implementation, which cannot be done incrementally. This is the last non-breaking patch to prepare for the rewrite. Differential Revision: https://phab.mercurial-scm.org/D8403

rust-chg: move get_umask() call out of run() function run() will be an async function, but get_umask() isn't thread safe. Differential Revision: https://phab.mercurial-scm.org/D8402

rust-chg: leverage impl trait at argument position Differential Revision: https://phab.mercurial-scm.org/D8401

setup: link osutil.so to libsocket on Solaris/illumos (issue6299)