doc/hgrc.5.txt

4660:cfa477946181

  generic pre- and post- command hooks as they are guaranteed to be
  called in the appropriate contexts for influencing transactions.
  Also, hooks like "commit" will be called in all contexts that
  generate a commit (eg. tag) and not just the commit command.

  Note2: Environment variables with empty values will not be passed to
  hooks. For instance, $HG_PARENT2 will not be set for non-merge
  changesets.

  The syntax for Python hooks is as follows:

    hookname = python:modulename.submodule.callable

4661:a7e9b6b1adeb

  generic pre- and post- command hooks as they are guaranteed to be
  called in the appropriate contexts for influencing transactions.
  Also, hooks like "commit" will be called in all contexts that
  generate a commit (eg. tag) and not just the commit command.

  Note2: Environment variables with empty values may not be passed to
  hooks on platforms like Windows. For instance, $HG_PARENT2 will
  not be available under Windows for non-merge changesets while being
  set to an empty value under Unix-like systems.

  The syntax for Python hooks is as follows:

    hookname = python:modulename.submodule.callable