This documentation was written to describe the 1.6.x series of Subversion. If you are running a different version of Subversion, you are strongly encouraged to visit and instead consult the version of this documentation appropriate for your version of Subversion.


pre-commit — Notification just prior to commit completion.


The pre-commit hook is run just before a commit transaction is promoted to a new revision. Typically, this hook is used to protect against commits that are disallowed due to content or location (e.g., your site might require that all commits to a certain branch include a ticket number from the bug tracker, or that the incoming log message is nonempty).

If the pre-commit hook program returns a nonzero exit value, the commit is aborted, the commit transaction is removed, and anything printed to stderr is marshalled back to the client.

Input parameter(s)

The command-line arguments passed to the hook program, in order, are:

  1. Repository path

  2. Commit transaction name

Additionally, Subversion passes any lock tokens provided by the committing client to the hook script via standard input. When present, these are formatted as a single line containing the string LOCK-TOKENS:, followed by additional lines—one per lock token—which contain the lock token information. Each lock token information line consists of the URI-escaped repository filesystem path associated with the lock, followed by the pipe (|) separator character, and finally the lock token string.

Common uses

Change validation and control