fix addmarker - extract mark from markdecorator

CONTRIBUTING.rst

@@ -162,11 +162,11 @@ Preparing Pull Requests
 Short version
 ~~~~~~~~~~~~~
 
-#. Fork the repository;
-#. enable and install pre-commit https://pre-commit.com/ to ensure styleguides and codechecks are followed
-#. Target ``master`` for bugfixes and doc changes;
+#. Fork the repository.
+#. Enable and install `pre-commit <https://pre-commit.com>`_ to ensure style-guides and code checks are followed.
+#. Target ``master`` for bugfixes and doc changes.
 #. Target ``features`` for new features or functionality changes.
-#. Follow **PEP-8**. There's a ``tox`` command to help fixing it: ``tox -e fix-lint``.
+#. Follow **PEP-8** for naming and `black <https://github.com/ambv/black>`_ for formatting.
 #. Tests are run using ``tox``::
 
  tox -e linting,py27,py36
@@ -177,7 +177,7 @@ Short version
  and one of ``bugfix``, ``removal``, ``feature``, ``vendor``, ``doc`` or
  ``trivial`` for the issue type.
 #. Unless your change is a trivial or a documentation fix (e.g., a typo or reword of a small section) please
- add yourself to the ``AUTHORS`` file, in alphabetical order;
+ add yourself to the ``AUTHORS`` file, in alphabetical order.
 
 
 Long version
@@ -217,15 +217,15 @@ Here is a simple overview, with pytest-specific bits:
  If you need some help with Git, follow this quick start
  guide: https://git.wiki.kernel.org/index.php/QuickStart
 
-#. install pre-commit and install its hook on the pytest repo
+#. Install `pre-commit <https://pre-commit.com>`_ and its hook on the pytest repo::
 
- https://pre-commit.com/ is a framework for managing and maintaining multi-language pre-commit hooks
- pytest uses pre-commit to ensure code-style and code formatting is the same
+  $ pip install --user pre-commit
+  $ pre-commit install
 
- $ pip install --user pre-commit
- $ pre-commit install
+ Afterwards ``pre-commit`` will run whenever you commit.
 
- Afterwards pre-commit will run whenever you commit.
+ https://pre-commit.com/ is a framework for managing and maintaining multi-language pre-commit hooks
+ to ensure code-style and code formatting is consistent.
 
 #. Install tox
 
@@ -245,15 +245,7 @@ Here is a simple overview, with pytest-specific bits:
  This command will run tests via the "tox" tool against Python 2.7 and 3.6
  and also perform "lint" coding-style checks.
 
-#. You can now edit your local working copy. Please follow PEP-8.
-
- You can now make the changes you want and run the tests again as necessary.
-
- If you have too much linting errors, try running::
-
- $ tox -e fix-lint
-
- To fix pep8 related errors.
+#. You can now edit your local working copy and run the tests again as necessary. Please follow PEP-8 for naming.
 
  You can pass different options to ``tox``. For example, to run tests on Python 2.7 and pass options to pytest
  (e.g. enter pdb on failure) to pytest you can do::
@@ -264,6 +256,9 @@ Here is a simple overview, with pytest-specific bits:
 
  $ tox -e py36 -- testing/test_config.py
 
+
+ When committing, ``pre-commit`` will re-format the files if necessary.
+
 #. Commit and push once your tests pass and you are happy with your change(s)::
 
  $ git commit -a -m "<commit message>"