Mercurial 6.7rc0

These are **tentative** release notes for the upcoming Mercurial 6.7. Anything can be added or removed before the actual release.

As usual, a *lot* of patches don't make it to this list.

New Features

• JSON templates can now use structured diffstat data
• Support rhg status --rev --rev
• The index for REVLOGv1 now has a Rust implementation

• Improved hg censor's output

• censor: add a command flag to skip the head checks
• censor: accept multiple revision in a single call

• usage: add a usage.repository-role config

• branchmap: use mmap for faster revbranchcache loading
• crecord: enable search hotkeys (issue6834)
• hg-core: separate timestamp and extra methods
• annotate: limit output to range of lines
• unbundle: faster computation of changed heads
• Large improvements of some of the phases code (23950e39281f)

New Experimental Features

• Introduce hg admin::chainsaw-update for automation and *advanced* users

Bug Fixes

• templatekw: fix inconsistency of diffstat with diff.merge
• The endless stream of Python 3 cleanups continues
• Improved setup.py robustness
• Improved test suite robustness
• add: don't attempt to add back removed files unless explicitly listed

• statprof: handle lineno == None in more cases

• rust: fix cargo doc for hg-cpython
• rust-python-index: don't panic on a corrupted index when calling from Python
• debugindexstats: handle the lack of Rust support better
• matchers: use correct method for finding index in vector

• narrow: strip trailing / from manifest dir before matching it

• cext: fix potential memory leaks of list items appended with PyList_Append

• doc: document that labels must have a dot in them to have an effect
• debugformat: fix formatting for compression level

Backwards Compatibility Changes

Users of the Rust extensions and/or rhg should be aware that the new Rust index can result in a performance degradation for push/pull on repositories *not* using persistent-nodemap (see hg help config.format.use-persistent-nodemap).

If this is something that matters to you, please reach out to us as this is not an insurmountable obstacle. This is a choice base on the assumption that there are few people in this situation and our time should be spent on more pressing matters.

Internal API Changes

• 62913:498017baa34b "cleanup: remove some code scheduled to be removed after 5.9"

• 62914:88ef80210d67 "cleanup: drop dirstate.is_changing_parent deprecated since 6.5"

• 62915:591845f89ada "cleanup: drop path.pushloc deprecated since 6.5"

• 62916:d8f65fc72e7b "cleanup: drop deprecated config attribute on the revlog class"

• 62917:5c9c41273367 "cleanup: turn pathsuboption deprecation warning into an error"

• 62918:7b837fabc990 "cleanup: turn wrappedfunction deprecation warning into an error"

• 62919:eda075d7b2ac "cleanup: turn wrapfunction deprecation warning into an error"

• 62920:c845479fc64d "cleanup: drop the bytes compatibility for attribute related function"

• 63464:dcaa2df1f688 "changelog: never inline changelog"
• 63465:a93e52f0b6ff "changelog: disallow delayed write on inline changesets"

• 63825:79cd29d598af "dirstate: make the transaction argument of setbranch mandatory"

Miscellaneous

• perf: support --template on perf::phases
• perf: add a --as-push option to perf::unbundle
• debug: add a debug::unbundle command that simulate the unbundle from a push
• Lots of refactorings to prepare for performance improvements and remove tech debt