merge: make hg.merge() take a context instead of a node Many callers already have a repo, so we might as well pass that. `merge.update()` will look up the context object later. This patch is part of making it so we pass around the context object all the way down instead. I also removed the `repo` argument since it can be retrieved from the context. Differential Revision: https://phab.mercurial-scm.org/D7999

debugbackupbundle: introduce command to interact with strip backups This vendors backups extension from hg-experimental. Listing backups and having some utility to apply them is nice. I know we have obsmarkers now, but this will help a lot of end users who still uses strip until we get evolve out of experimental. Differential Revision: https://phab.mercurial-scm.org/D7932

test: cleanly skip test-remotefilelog-datapack.py on policy that breaks it That tests requires the pure module to be available. Differential Revision: https://phab.mercurial-scm.org/D8245

rust-format: cleanup ancestors.rs to make rustfmt happy Differential Revision: https://phab.mercurial-scm.org/D8224

heptapod-ci: use strict module policy Without this, test can silently fallback to other compatible policy in some cases. Differential Revision: https://phab.mercurial-scm.org/D8234

histedit: fix formatting after D8150 Differential Revision: https://phab.mercurial-scm.org/D8230

rust-format: make rustfmt happy Differential Revision: https://phab.mercurial-scm.org/D8228

phabricator: also check parent fctx for binary where it is checked for UTF-8 I don't know that this is necessary, but it seems obvious from the code checking both the current and parent file for UTF-8 content that this was the intent. Differential Revision: https://phab.mercurial-scm.org/D8221

phabricator: don't infer the old `fctx` in `notutf8()` This is used along with `fctx.isbinary()` to gate `addoldbinary()`, so it seems like a good idea to provide the caller similar control over the current and parent filecontext. Unlike `addoldbinary()`, it doesn't need both previous and current contexts at the same time, so make the caller responsible for testing both cases, as appropriate. I haven't worked out all of the problems around marking files as binary for move/remove/copy, but this will definitely help with `--no-stack` too. It also turns out to have been doing too much- in the remove case, it tested not just the removed file in the parent context (which is what gets passed in that case), but also in the parent of the parent context (which should be irrelevant). The previous code also required the `fctx.parents()` check to work in the add (but without rename) case. Now the add and remove cases test only what they need to. But now that it is written this way, the fact that only the current `fctx` is checked to be binary in the case of modification or being renamed seems wrong. Differential Revision: https://phab.mercurial-scm.org/D8220

phabricator: rename a variable to clarify that it is the parent filecontext Differential Revision: https://phab.mercurial-scm.org/D8219