= Commit Ticket Updater =

The Commit Ticket Updater is an **optional component** which makes Trac react on keywords and ticket references found in commit log message. Referenced tickets get a new comment linking to the changeset and depending on the presence of appropriate keywords (like //closed//, //fixed//, //reopened//, etc.) the ticket status will be updated.

That role was fulfilled by the [source:branches/0.11-stable/trac-post-commit-hook trac-post-commit-hook] for Subversion and previous versions of Trac (up to 0.11), but starting with Trac 0.12 and [TracRepositoryAdmin multiple repository support], a more general notification solution has been adopted.

The post-commit hooks now should simply use `trac-admin` to notify the TracEnvironment that a changeset has been 
//[[span(title=trac-admin <env> changeset added <repos> <rev>,added)]]// or 
//[[span(title=trac-admin <env> changeset added <repos> <rev>,modified)]]//. See TracRepositoryAdmin#ExplicitSync for more details.
This works for any kind of VersionControlSystem supported by Trac and can notify that information to any kind of listener, not only the commit ticket updater (see [[TracDev/ApiChanges/0.12#IRepositoryChangeListener]]).

The `CommitTicketUpdater` component lives in `source:trunk/tracopt/ticket/commit_updater.py` and is maintained alongside the Trac core. It's included with every Trac installation as a plugin, but is not enabled by default because it's rooted in the `tracopt.` packages and not in `trac.`.   Therefore it needs to be explicitly activated. See the tip in TracRepositoryAdmin#trac-post-commit-hook.