view relnotes/6.6 @ 51352:7083b33a2699

delta-find: explicitly deal with usage of the cached revision

We can remove this from the general logic path and directly deal with this
corner case early.

This result in a small change in test-generaldelta.t as it turns out that:

- at commit time we (sometimes) precompute a delta against p1 and pass it as the
  cached delta.
- since cached delta where going through the same filtering as everything, we
  could "optimize" the base if it applied to an empty delta, resulting in not
  using the pre-computed delta.

The simpler logic fix the second item, making the cached delta base always actually
tested when requested.

Note that the computation of a fast delta against p1 only is questionable, but
looking into that is out of scope for this series.

= Mercurial 6.6.2 =

 * histedit: remove superfluous echo() and endwin() calls (issue6859)
 * persistent-nodemap: avoid writing nodemap for empty revlog
 * persistent-nodemap: respect the mmap setting when refreshing data
 * bundle: do not detect --base argument that match nothing as lack of argument
 * narrow: prevent removal of ACL-defined excludes
 * pycompat: fix bytestr(bytes) in Python 3.11

= Mercurial 6.6.1 =

The first two patches fix aborted transactions that could happen since 6.6.

 * revlog: avoid exposing delayed index entry too widely in non-inline revlog
 * revlog: avoid wrongly updating the data file location on "divert"
 * tests: do not fail tests in a state with uncommitted .py file removal
 * perf-tags: fix the --clear-fnode-cache-rev code
 * perf-tags: fix clear_cache_fnodes to actually clear that cache
 * censor: fix things around inlining
 * Various Python 3 cleanups
 * Various Windows test suite fixes

= Mercurial 6.6 =

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

== New Features ==
 * rust-config: add support for default config items
 * rhg: add config defaults to configitems.toml
 * rhg: support "status FILE"
 * rhg: support rhg files [FILE]
 * commands: add admin namespace
 * admin-command: add verify command
 * debug-delta-chain: add options to control what we compute
 * Added some caching for uncompressed revlog chunks that speed up some operations

== New Experimental Features ==

== Bug Fixes ==
 * Improve OpenVMS support
 * byteify-strings: passe sysstr to attr function and wrapper
 * journal: track bookmark deletion
 * transaction: actually delete file created during the transaction on rollback
 * pull: avoid referencing a variable before it is initialized
 * rust-filepatterns: also normalize RelPath
 * narrow: hoist a variable to a higher level to avoid use-before-init warning
 * convert: stabilize subversion date sorter
 * run-tests: detect HGWITHRUSTEXT value
 * censor: accept censored revision during upgrade
 * rust-matchers: fix quadratic complexity in `FileMatcher`
 * unstable: do not consider internal phases when computing unstable
 * Still a whole bunch of Python 2 -> 3 migration leftovers

== Backwards Compatibility Changes ==
 * perf: display all timing by default
 * infinitepush: drop the extension
 * debug-delta-chain: print less data by default

== Internal API Changes ==

 * The revlog interface has been significantly cleaned up.
 * configitems: add `documentation` field
 * configitems: declare items in a TOML file
 * configitems: move blackbox's config items to the new configitems.toml
 * path-suboption: deprecated specifying the attributes as bytes
 * pycompat: deprecate using bytes
 * check-code: drop the `safehasattr` rule
 * safehasattr: drop usage in favor of hasattr
 * rust: add `UncheckedRevision` type
 * rust: implement the `Graph` trait for all revlogs
 * rust: make `Revision` a newtype
 * perf: change the way we approach revlog reading
 * perf: ensure all readlog's reading is done within a `reading` context
 * delta-chain: move the debugdeltachain command in revlogutils

== Miscellaneous ==