Using Additional Features

Mercurial has the ability to add new features through the use of extensions. Extensions may add new commands, add options to existing commands, change the default behavior of commands, or implement hooks.

To enable the "foo" extension, either shipped with Mercurial or in the Python search path, create an entry for it in your configuration file, like this:

foo =

You may also specify the full path to an extension:

myfeature = ~/.hgext/

See hg help config for more information on configuration files.

Extensions are not loaded by default for a variety of reasons: they can increase startup overhead; they may be meant for advanced usage only; they may provide potentially dangerous abilities (such as letting you destroy or modify history); they might not be ready for prime time; or they may alter some usual behaviors of stock Mercurial. It is thus up to the user to activate extensions as needed.

To explicitly disable an extension enabled in a configuration file of broader scope, prepend its path with !:

# disabling extension bar residing in /path/to/extension/
bar = !/path/to/extension/
# ditto, but no path was supplied for extension baz
baz = !

disabled extensions:

absorb:apply working directory changes to changesets (EXPERIMENTAL)
acl:hooks for controlling repository access
amend:provide the amend command (EXPERIMENTAL)
automv:check for unrecorded moves at commit time (EXPERIMENTAL)
beautifygraph:beautify log -G output by using Unicode characters (EXPERIMENTAL)
blackbox:log repository events to a blackbox for debugging
bookflow:implements bookmark-based branching (EXPERIMENTAL)
bugzilla:hooks for integrating with the Bugzilla bug tracker
censor:erase file content at a given revision
children:command to display child changesets (DEPRECATED)
churn:command to display statistics about repository history
clonebundles:advertise pre-generated bundles to seed clones
closehead:close arbitrary heads without checking them out first
commitextras:adds a new flag extras to commit (ADVANCED)
convert:import revisions from foreign VCS repositories into Mercurial
eol:automatically manage newlines in repository files
extdiff:command to allow external programs to compare revisions
factotum:http authentication with factotum
fastannotate:yet another annotate implementation that might be faster (EXPERIMENTAL)
fetch:pull, update and merge in one command (DEPRECATED)
fix:rewrite file content in changesets or working copy (EXPERIMENTAL)
fsmonitor:Faster status operations with the Watchman file monitor (EXPERIMENTAL)
githelp:try mapping git commands to Mercurial commands
gpg:commands to sign and verify changesets
graphlog:command to view revision graphs from a shell (DEPRECATED)
hgk:browse the repository in a graphical way
highlight:syntax highlighting for hgweb (requires Pygments)
histedit:interactive history editing
infinitepush:store some pushes in a remote blob store on the server (EXPERIMENTAL)
journal:track previous positions of bookmarks (EXPERIMENTAL)
keyword:expand keywords in tracked files
largefiles:track large binary files
lfs:lfs - large file support (EXPERIMENTAL)
logtoprocess:send ui.log() data to a subprocess (EXPERIMENTAL)
mq:manage a stack of patches
narrow:create clones which fetch history data for subset of files (EXPERIMENTAL)
notify:hooks for sending email push notifications
pager:browse command output with an external pager (DEPRECATED)
patchbomb:command to send changesets as (a series of) patch emails
phabricator:simple Phabricator integration (EXPERIMENTAL)
purge:command to delete untracked files from the working directory
rebase:command to move sets of revisions to a different ancestor
record:commands to interactively select changes for commit/qrefresh (DEPRECATED)
releasenotes:generate release notes from commit messages (EXPERIMENTAL)
relink:recreates hardlinks between repository clones
remotefilelog:remotefilelog causes Mercurial to lazilly fetch file contents (EXPERIMENTAL)
remotenames:showing remotebookmarks and remotebranches in UI (EXPERIMENTAL)
schemes:extend schemes with shortcuts to repository swarms
share:share a common history between several working directories
shelve:save and restore changes to the working directory
show:unified command to show various repository information (EXPERIMENTAL)
sparse:allow sparse checkouts of the working directory (EXPERIMENTAL)
split:command to split a changeset into smaller ones (EXPERIMENTAL)
sqlitestore:store repository data in SQLite (EXPERIMENTAL)
strip:strip changesets and their descendants from history
transplant:command to transplant changesets from another branch
uncommit:uncommit part or all of a local changeset (EXPERIMENTAL)
win32mbcs:allow the use of MBCS paths with problematic encodings
win32text:perform automatic newline conversion (DEPRECATED)
zeroconf:discover and advertise repositories on the local network