Mercurial 5.9 (2021-08-16)

Mercurial 5.9 (2021-08-16)#

New Features#

  • hg config now has a --source option to show where each configuration value comes from.

  • Introduced a command (debug-repair-issue6528) to repair repositories affected by issue6528 where certain files would show up as modified even if they were clean due to an issue in the copy-tracing code.

New Experimental Features#

  • A changelogv2 format has been introduced. It is not ready for use yet, but will be used later to address some of the weaknesses of the current revlog format.

  • Initial experiment and support for dirstatev2, a new dirstate format that addresses some of the weaknesses of the current dirstate format. Python + C and Rust support are being implemented, but the Rust solution is the one currently getting the attention for performance.

  • Initial support for rhg status. rhg is the Rust wrapper executable for hg that shortcuts some commands for faster execution speed.

Bug Fixes#

  • Fixed committing empty files with narrow

  • Allow overriding pip’s pep517 compliance to build C or Rust extensions

  • Fixed regression on outgoing email when not specifying revisions

  • Fixed a regression causing bookmarks to disappear when using Rust persistent nodemap

  • Fixed a regression (in 5.9.1) introduced in 5.9 when cloning repos with deep filenames

  • Fixed detection of directories becoming symlinks, but only when using the Rust extensions.

  • Fixed ignore and include not composing in the Rust status

  • hg commit --interactive now handles deselecting edits of a rename

  • Fixed a case where hg evolve gives different results when interrupted

  • Fixed a memory leak in phases computation

  • histedit and shelve don’t swallow errors when updating the working copy anymore

  • Improve error message when detecting content-divergence with a hidden common predecessor

  • No longer re-order parents in filelog, see issue6533

  • Fix revisions affected by issue6533 on the fly during exchange

  • Many Windows fixes for stability and py3 compatibility improvements

  • Many other miscellaneous fixes

Backwards Compatibility Changes#

Internal API Changes#

The Dirstate API have been updated as the previous function leaked some internal details and did not distinguish between two important cases: “We are changing parent and need to adjust the dirstate” and “some command is changing which file is tracked”. To clarify the situation:

  • the following functions have been deprecated,

  • dirstate.add,

  • dirstate.normal,

  • dirstate.normallookup,

  • dirstate.merge,

  • dirstate.otherparent,

  • dirstate.remove,

  • dirstate.drop,

  • dirstateitem.__getitem__,

  • these new functions are added for the “adjusting parents” use-case:

  • dirstate.update_file,

  • dirstate.update_file_p1,

  • these new function are added for the “adjusting wc file” use-case”:

  • dirstate.set_tracked,

  • dirstate.set_untracked,

  • dirstate.set_clean,

  • dirstate.set_possibly_dirty,

See inline documentation of the new functions for details.

  • Additionally, the following have been deprecated:

  • urlutil.getpath function

  • localrepository.updatecaches’ full argument

  • The following have been removed:

  • revlog.revlogio has been removed