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:

[extensions]
foo =

You may also specify the full path to an extension:

[extensions]
myfeature = ~/.hgext/myfeature.py

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 !:

[extensions]
# disabling extension bar residing in /path/to/extension/bar.py
bar = !/path/to/extension/bar.py
# ditto, but no path was supplied for extension baz
baz = !

disabled extensions:

acl:hooks for controlling repository access
blackbox:log repository events to a blackbox for debugging
bugzilla:hooks for integrating with the Bugzilla bug tracker
censor:erase file content at a given revision
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
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
fastexport:export repositories as git fast-import stream
githelp:try mapping git commands to Mercurial commands
gpg:commands to sign and verify changesets
hgk:browse the repository in a graphical way
highlight:syntax highlighting for hgweb (requires Pygments)
histedit:interactive history editing
keyword:expand keywords in tracked files
largefiles:track large binary files
mq:manage a stack of patches
notify:hooks for sending email push notifications
patchbomb:command to send changesets as (a series of) patch emails
rebase:command to move sets of revisions to a different ancestor
relink:recreates hardlinks between repository clones
schemes:extend schemes with shortcuts to repository swarms
share:share a common history between several working directories
transplant:command to transplant changesets from another branch
win32mbcs:allow the use of MBCS paths with problematic encodings
zeroconf:discover and advertise repositories on the local network