v0.20.0

[martinvonz]

Note to packagers

• jj now links libgit2 statically by default. To use dynamic linking, you
  need to set the environment variable LIBGIT2_NO_VENDOR=1 while compiling.
  (#4163)

Breaking changes

• jj rebase --skip-empty has been renamed to jj rebase --skip-emptied

• jj backout --revision has been renamed to jj backout --revisions.
  The short alias -r is still supported.

• The default immutable_heads() set
  now includes untracked_remote_branches() with the assumption that untracked
  branches aren't managed by you. Therefore, untracked branches are no longer
  displayed in jj log by default.

• Updated defaults for graph node symbol templates templates.log_node and
  templates.op_log_node.

• The "fileset" language is now enabled by default. It can
  still be disable by setting ui.allow-filesets=false.

• On jj git fetch/import, commits referred to by HEAD@git are no longer
  preserved. If a checked-out named branch gets deleted locally or remotely, the
  corresponding commits will be abandoned.

• jj --at-op=@ no longer merges concurrent operations if explicitly specified.

• jj obslog -p no longer shows diffs at non-partial squash operations.
  Previously, it showed the same diffs as the second predecessor.

Deprecations

• The original configuration syntax for jj fix is now deprecated in favor of
  one that allows defining multiple tools that can affect different filesets.
  These can be used in combination for now. See jj help fix for details.

New features

• External diff tools can now be configured to invoke the tool on each file
  individually instead of being passed a directory by setting
  merge-tools.$TOOL.diff-invocation-mode="file-by-file" in config.toml.

• In git diffs, word-level hunks are now highlighted with underline. See diff
  colors and styles for customization.

• New .diff().<format>() commit template methods are added. They can be used
  in order to show diffs conditionally. For example,
  if(current_working_copy, diff.summary()).

• jj git clone and jj git init with an existing git repository adds the
  default branch of the remote as repository settings for
  revset-aliases."trunk()".`

• jj workspace forget now abandons the workspace's working-copy commit if it
  was empty.

• jj backout now includes the backed out commit's subject in the new commit
  message.

• jj backout can now back out multiple commits at once.

• jj git clone some/nested/path now creates the full directory tree for
  nested destination paths if they don't exist.

• String patterns now support case‐insensitive matching by suffixing any
  pattern kind with -i. mine() uses case‐insensitive matching on your email
  address unconditionally. Only ASCII case folding is currently implemented,
  but this will likely change in the future.

• String patterns now support regex:"pattern".

• New tracked_remote_branches() and untracked_remote_branches() revset
  functions can be used to select tracked/untracked remote branches.

• The file() revset function now accepts fileset as argument.

• New diff_contains() revset function can be used to search diffs.

• New command jj operation diff that can compare changes made between two
  operations.

• New command jj operation show that can show the changes made in a single
  operation.

• New config setting git.private-commits to prevent commits from being pushed.

• The default commit description template
  can now be configured by templates.draft_commit_description.

• jj fix can now be configured to run different tools on different filesets.
  This simplifies the use case of configuring code formatters for specific file
  types. See jj help fix for details.

• Added revset functions author_date and committer_date.

• jj describe can now update the description of multiple commits.

Fixed bugs

• jj status will show different messages in a conflicted tree, depending
  on the state of the working commit. In particular, if a child commit fixes
  a conflict in the parent, this will be reflected in the hint provided
  by jj status

• jj diff --git no longer shows the contents of binary files.

• Windows binaries no longer require vcruntime140.dll to be installed
  (normally through Visual Studio.)

• On quit, the builtin pager no longer waits for all outputs to be discarded.

• jj branch rename no longer shows a warning in colocated repos.

Contributors

Thanks to the people who made this release happen!

• Anton Älgmyr (@algmyr)
• Austin Seipp (@thoughtpolice)
• Benjamin Tan (@bnjmnt4n)
• Daniel Ploch (@torquestomp)
• Danny Hooper (@hooper)
• Emily (@emilazy)
• Essien Ita Essien (@essiene)
• Fedor Sheremetyev (@sheremetyev)
• Ilya Grigoriev (@ilyagr)
• Jonathan Tan (@jonathantanmy)
• Julien Vincent (@julienvincent)
• Martin von Zweigbergk (@martinvonz)
• Matt Kulukundis (@fowles)
• Matt Stark (@matts1)
• mlcui (@mlcui-corp)
• Philip Metzger (@PhilipMetzger)
• Scott Taylor (@scott2000)
• Skyler Grey (@Minion3665)
• Stephen Jennings (@jennings)
• Tim Janik (@tim-janik)
• Vincent Ging Ho Yim (@cenviity)
• Vladimír Čunát (@vcunat)
• Vladimir (@0xdeafbeef)
• Yuya Nishihara (@yuja)

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This discussion was created from the release v0.20.0.