v0.40.0 #9237

martinvonz · 2026-04-02T05:17:00Z

martinvonz
Apr 2, 2026
Maintainer

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

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New diff_lines_added() and diff_lines_removed() revset functions for
matching content on only one side of a diff.
The end parameter in the String.substr(start, end) templating method is
now optional. If not given, substr() returns from start to the end of the
string.
WorkspaceRef templates now provide a .root() method to show the absolute
path to each workspace root.
The jj arrange TUI now includes immediate parents and children. They are not
selectable and are dimmed by default.
jj arrange uses the default log template (builtin_log_compact) instead of
the shorter commit summary style.
In the jj arrange TUI, the "swap up/down" actions now move along graph edges
even if the commit rows are not adjacent.
Diff colors can now be configured
differently for each format.
jj op log now includes the name of the workspace the operation was created
from.
The config() template function now accepts a Stringify expression instead
of LiteralString. This allows looking up configuration values dynamically.
jj op show, jj op diff, jj op log -p now only show "interesting"
revisions by default (defined by revsets.op-diff-changes-in). A new flag,
--show-changes-in, can be used to override this. #6083

Thanks to the people who made this release happen!

This discussion was created from the release v0.40.0.