Mercurial 4.8 release

This page consists of 4.8 release which is work in progress.

1. New Features

• Command templates (aka formatter templates) are stabilized. See hg help <command> -v for details.

• New closehead extension to close arbitrary heads without checking them out.

• New config option commands.resolve.mark-check to warn or abort on resolve --mark when files still have conflict markers

• New config option commands.resolve.confirm to confirm before performing action when no filename is passed.

• Rebase gets new --stop flag to stop interrupted rebase without discarding the already rebased changes.

2. New Experimental Features

• New absorb extension to make working changes "absorbed" into relevant changesets.

• New fastannotate extension to greatly speed up "annotate" with precomputed cache and adding new flags like --deleted.

• The phabricator extension gets into hgext.

3. Other Notable Features

• New http.timeout config option to specify timeout in seconds.

• Several performance optimizations on fileset query.

• Sort out command help by categories.
• Storage extensions such as lfs are now loaded on demand.
• Improvements to zsh completions:
  • Completing files, shelve and unshelve commands
  • Completing merge tools
  • Completing added and removed (in addition to changed) files to commit and diff commands
  • Numerous updates to flags and descriptions
  • Fixes for minor issues and a couple of performance improvements

4. Bug Fixes

5. Backwards Compatibility Changes

• The experimental narrow extension has undergone perf and correctness improvements, bug fixes and introducing new capabilities to make it more robust. It's expected that narrow clients with new mercurial version won't be able to interact with narrow server using older version of mercurial. It is recommended to update both client and server versions if you are using narrow for improvements.
• Emails from the patchbomb extension will always be printed as though they are iso-8859-1 if they're not valid us-ascii. Previously, previewed emails were always claimed to be us-ascii and might contain invalid byte sequences.
• 'hg debugdata' no longer accepts the path to a revlog file.
• Bulk-renaming of the formatter template keywords:
  • "{abspath}" and "{file}" to "{path}". Any "{path}" is a repository-absolute path. Use "{path|relpath}" to convert it to a filesystem path.
  • "{copy}" in status command to "{source}".
  • "{oldhashes}" and "{newhashes}" in journal template to "{oldnodes}" and "{newnodes}" respectively.
  • "{line_number}" to "{lineno}".
  • "{status}" of resolve command to "{mergestatus}".

• A repository will no longer use shared storage if it has a ".hg/sharedpath" file but no entry in ".hg/requires" saying it is shared.
  This change should not have any end-user impact, as all shared repos should have a ".hg/requires" file indicating this.

6. API Changes

7. More notes to sort into the above

7.1. commands

7.2. core

7.3. extensions

7.4. hgweb

7.5. unsorted