v0.30.0

[yuja]

About

jj is a Git-compatible version control system that is both simple and powerful. See the installation instructions to get started.

Release highlights

• The experimental support from release 0.29.0 for transferring the change ID
  to/from Git remotes has been enabled by default. The change ID is stored in
  the Git commit itself (in a commit header called change-id), which means
  it will be transferred by regular git push etc. Please let us know if you
  run into any problems with it. You can disable it setting
  git.write-change-id-header. Note that some Git remotes (e.g GitLab) and
  some Git commands (e.g. git rebase) do not preserve the change ids when
  they rewrite commits.

• jj rebase now automatically abandons divergent commits if another commit
  with the same change ID is already present in the destination with identical
  changes.

• jj split has gained --message, --insert-before, --insert-after, and
  --destination options.

• jj evolog can show associated operations for commits created by new jj
  versions.

Breaking changes

• The old libgit2 code path for fetches and pushes has been removed,
  and the git.subprocess setting along with it.

• In templates, bookmark/tag/remote names are now formatted in revset symbol
  notation. The type of bookmark.remote() is changed to Option<_>.
  bookmark.remote() == "foo" still works, but bookmark.remote().<method>()
  might need if(bookmark.remote(), ..) to suppress error.

• jj rebase now automatically abandons divergent commits if another commit
  with the same change ID is already present in the destination with identical
  changes. To keep these divergent commits, use the --keep-divergent flag.

• The deprecated --skip-empty flag for jj rebase has been removed. Use the
  --skip-emptied flag instead.

• The deprecated jj branch subcommands have been removed. Use the jj bookmark subcommands instead.

• jj util completion now requires the name of the shell as a positional
  argument and no longer produces Bash completions by default. The deprecated
  optional arguments for different shells have been removed.

• (Update: this entry was mistakenly omitted in the release notes previously)
  External diff tools are now run in the temporary directory containing
  the before (left) and after (right) directories, making diffs appear
  more pleasing for tools that display file paths prominently. Users can
  opt out of this by setting merge-tools.<tool>.diff-do-chdir = false,
  but this will likely be removed in a future release. Please report any
  issues you run into.

Deprecations

• The ui.diff.format and ui.diff.tool config options have been merged as
  ui.diff-formatter. The builtin format can be specified as :<format>
  (e.g. ui.diff-formatter=":git" for Git diffs.)

• The .normal_hex() method will be removed from the CommitId template type.
  It's useful only for the ChangeId type.

New features

• jj split has gained a --message option to set the description of the
  commit with the selected changes.

• jj split has gained the ability to place the revision with the selected
  changes anywhere in the revision tree with the --insert-before,
  --insert-after and --destination command line flags.

• Added git.track-default-bookmark-on-clone setting to control whether to
  track the default remote bookmark on jj git clone.

• Templates can now do arithmetic on integers with the +, -, *, /, and
  % infix operators.

• Evolution history is now stored in the operation log. jj evolog can show
  associated operations for commits created by new jj versions.

Fixed bugs

• Work around a git issue that could cause subprocess operations to hang if the
  core.fsmonitor gitconfig is set in the global or system gitconfigs.
  #6440

• jj parallelize can now parallelize groups of changes that start with an
  immutable change, but do not contain any other immutable changes.

• jj will no longer warn about deprecated paths on macOS if the configured
  XDG directory is the deprecated one (~/Library/Application Support).

• The builtin diff editor now correctly handles splitting changes where a file
  is replaced by a directory of the same name.
  #5189

Packaging changes

• Due to the removal of the libgit2 code path, packagers should remove any
  dependencies on libgit2, libssh2, Zlib, OpenSSL, and pkg-config, and
  ensure they are not setting the Cargo git2 or vendored-openssl features.

Contributors

Thanks to the people who made this release happen!

• Alper Cugun (@alper)
• Austin Seipp (@thoughtpolice)
• Benjamin Brittain (@benbrittain)
• Benjamin Tan (@bnjmnt4n)
• Bryce Berger (@bryceberger)
• Colin Nelson (@orthros)
• Doug Stephen (@dljsjr)
• Emily (@emilazy)
• Eyvind Bernhardsen (@eyvind)
• Felix Geisendörfer (@felixge)
• Gaëtan Lehmann (@glehmann)
• Ilya Grigoriev (@ilyagr)
• Isaac Corbrey (@icorbrey)
• Jonas Greitemann (@jgreitemann)
• Josep Mengual (@truita)
• kkoang (@kkoang)
• Manuel Mendez (@mmlb)
• Marshall Bowers (@maxdeviant)
• Martin von Zweigbergk (@martinvonz)
• Mateus Auler (@mateusauler)
• Michael Pratt (@prattmic)
• Nicole Patricia Mazzuca (@strega-nil)
• Philip Metzger (@PhilipMetzger)
• Scott Taylor (@scott2000)
• T6 (@tjjfvi)
• Vincent Ging Ho Yim (@cenviity)
• Winter (@winterqt)
• Yuya Nishihara (@yuja)

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This discussion was created from the release v0.30.0.