encoding: extract stub for fast JSON escape This moves JSON character maps to pure/charencode.py because they will be used only when the fast-path fails.

journal: do not use atomictemp (issue5338) Writing journal files using `atomictemp` leads to quadratic performance that could be problematic if automation runs many commands. Other logs like blackbox does not use atomictemp, and journal logs are not critical for repo correctness. So let's make them non-atomictemp. Differential Revision: https://phab.mercurial-scm.org/D517

tests: update test-commandserver to pass our import checker

tests: add blank output lines to test-commandserver This helps the import checker notice when a Python heredoc has ended. It's not perfect, but it gets nasty quick and I think the better fix would be to add a real parser for .t-tests, which will have to wait.

contrib: make import-checker agree more with run-tests about heredocpy run-tests.py and import-checker.py take wholly different approaches to .t-tests, and the result was that they had different notions about when a Python heredoc had ended, leading to conflicts. This resolves part of the issue, and the rest I can deal with by tweaking the one offending test file.

contrib: add bzrlib to list of packages from which we import symbols Helps some tests pass the import checker.

tests: ensure demandimport test uses absolute_import

tests: blacklist test-demandimport from test-check-module-imports It just does too much weird import stuff to have a hope of passing the checks.

tests: sort excluded test files in test-check-module-imports

contrib: allow symbol imports from hgclient for tests

tests: blacklist some more entries in module import checks

bookmarks: allow deleting active bookmark using '.'

template: add minimal obsfate template function The goal of this series is to have templates capable of displaying the evolution of a changeset in a clean and human-readable way. Add the succsandmarkers template return successors and markers so it can be used separately like this: > {succsandmarkers % "{get(succsandmarkers, "markers")|json};"} The following patches will add template functions that takes successors and markers as inputs and compute various obsfate fields from them.

obsolete: track markers in _succs We now also store markers in _succs. It will be useful for the obsfate template that will use them to display more meaningful information like the list of users that have evolved a changeset into its successors.

obsolete: add an explicit '_succs.copy()' method Mimic the standard API for copying in the _succs class, it makes the code slightly cleaner and will be needed later for copying markers at the same time than copying the list content.

obsolete: introduce a _succs class It will be useful later when we will be adding markers to _succs in order to represent a successorset with the list of markers from the root to each successors sets. This information will be needed for the obsfate template I will introduce. Makes it a subclass of list so all callers will continue to work.

simplemerge: simplify code now that we always write to a context There's no need for an `out` abstraction between files and contexts anymore. Differential Revision: https://phab.mercurial-scm.org/D383

simplemerge: make context parameters non-optional Also update the function docstring. Differential Revision: https://phab.mercurial-scm.org/D382

simplemerge: stop accepting, and passing, file parameters Differential Revision: https://phab.mercurial-scm.org/D381

simplemerge: stop reading from, and writing to, files We now use contexts first for everything and also pass them everywhere. Differential Revision: https://phab.mercurial-scm.org/D380

simplemerge: use context paths for default labels instead of file paths This is the last place we used the filepath arguments without first using the context version. Differential Revision: https://phab.mercurial-scm.org/D379

contrib: make simplemerge script pass context-like objects `simplemerge()` will soon require context-like objects to work. Create a simple context-like object that wraps the requested files and can be passed to the new API. Differential Revision: https://phab.mercurial-scm.org/D378

simplemerge: use `ctx.decoddeddata()` instead of `repo.wreaddata` This eliminates the need for the `repo` object. Differential Revision: https://phab.mercurial-scm.org/D435

context: add `decodeddata()` to basefilectx This will be used as an abstraction by simplemerge to get the data it used to read off the filesystem. Differential Revision: https://phab.mercurial-scm.org/D434

bookmarks: allow renaming active bookmark using '.'

i18n: update check-translation script to pass import checker

demandimportpy3: update to pass import checker

contrib: always treat importlib.* as stdlib

hg: update top-level script to use modern import conventions

simplemerge: update to conform with modern import conventions

contrib: inform import checker that __builtin__ is a thing

contrib: allow importing "symbols" from mercurial