matplotlib
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diff --git a/‎doc/api/next_api_changes/deprecations.rst
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diff --git a/‎doc/conf.py
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diff --git a/‎doc/devel/documenting_mpl.rst
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@@ -1,6 +1,6 @@
-==========
-Installing
-==========
+==================
+Installation Guide
+==================
 
 .. note::
 
@@ -44,10 +44,10 @@ distribution, download the :file:`*.tar.gz` file and look in the
 To run the test suite:
 
 * extract the :file:`lib/matplotlib/tests` or :file:`lib/mpl_toolkits/tests`
-  directories from the source distribution;
+  directories from the source distribution.
 * install test dependencies: `pytest <https://pypi.org/project/pytest>`_,
   MiKTeX, GhostScript, ffmpeg, avconv, ImageMagick, and `Inkscape
-  <https://inkscape.org/>`_;
+  <https://inkscape.org/>`_.
 * run ``python -mpytest``.
 
 Third-party distributions of Matplotlib
@@ -120,14 +120,14 @@ Optionally, you can also install a number of packages to enable better user
 interface toolkits. See :ref:`what-is-a-backend` for more details on the
 optional Matplotlib backends and the capabilities they provide.
 
-* Tk_ (>= 8.3, != 8.6.0 or 8.6.1): for the Tk-based backends;
-* PyQt4_ (>= 4.6) or PySide_ (>= 1.0.3) [#]_: for the Qt4-based backends;
-* PyQt5_ or PySide2_: for the Qt5-based backends;
-* PyGObject_: for the GTK3-based backends [#]_;
-* wxPython_ (>= 4) [#]_: for the wx-based backends;
+* Tk_ (>= 8.3, != 8.6.0 or 8.6.1): for the Tk-based backends.
+* PyQt4_ (>= 4.6) or PySide_ (>= 1.0.3) [#]_: for the Qt4-based backends.
+* PyQt5_ or PySide2_: for the Qt5-based backends.
+* PyGObject_: for the GTK3-based backends [#]_.
+* wxPython_ (>= 4) [#]_: for the wx-based backends.
 * pycairo_ (>= 1.11.0) or cairocffi_ (>= 0.8): for the GTK3 and/or cairo-based
-  backends;
-* Tornado_: for the WebAgg backend;
+  backends.
+* Tornado_: for the WebAgg backend.
 
 .. _Tk: https://docs.python.org/3/library/tk.html
 .. _PyQt4: https://pypi.org/project/PyQt4
@@ -149,11 +149,11 @@ optional Matplotlib backends and the capabilities they provide.
 For better support of animation output format and image file formats, LaTeX,
 etc., you can install the following:
 
-* `ffmpeg <https://www.ffmpeg.org/>`_: for saving movies;
+* `ffmpeg <https://www.ffmpeg.org/>`_: for saving movies.
 * `ImageMagick <https://www.imagemagick.org/script/index.php>`_: for saving
-  animated gifs;
+  animated gifs.
 * `LaTeX <https://miktex.org/>`_ and `GhostScript (>=9.0)
-  <https://ghostscript.com/download/>`_ : for rendering text with LaTeX;
+  <https://ghostscript.com/download/>`_ : for rendering text with LaTeX.
 * `fontconfig <https://www.fontconfig.org>`_ (>= 2.7): for detection of system
   fonts on Linux.
 
 
@@ -120,3 +120,7 @@ steps:
     testResultsFiles: '**/test-results.xml'
     testRunTitle: 'Python $(python.version)'
   condition: succeededOrFailed()
+
+- publish: $(System.DefaultWorkingDirectory)/result_images
+  artifact: $(Agent.JobName)-result_images
+  condition: and(failed(), ne(variables['python.version'], 'Pre'))
@@ -415,3 +415,14 @@ parent figure, though they can be later removed with ``ax.remove()``.
 
 ``.BboxBase.inverse_transformed`` is deprecated (call `.BboxBase.transformed`
 on the `~.Transform.inverted()` transform instead).
+
+*orientation* of ``eventplot()`` and `.EventCollection`
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Setting the *orientation* of an ``eventplot()`` or `.EventCollection` to "none"
+or None is deprecated; set it to "horizontal" instead.  Moreover, the two
+orientations ("horizontal" and "vertical") will become case-sensitive in the
+future.
+
+*minor* kwarg to `.Axis.get_ticklocs` will become keyword-only
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Passing this argument positionally is deprecated.
@@ -102,7 +102,9 @@ def _check_dependencies():
 else:
     autodoc_default_options = {'members': None, 'undoc-members': None}
 
-nitpicky = True
+# missing-references names matches sphinx>=3 behavior, so we can't be nitpicky
+# for older sphinxes.
+nitpicky = sphinx.version_info >= (3,)
 # change this to True to update the allowed failures
 missing_references_write_json = False
 missing_references_warn_unused_ignores = False
 
@@ -289,12 +289,14 @@ Other packages can also be linked via
   `numpy.mean`
 
 will return this link: `numpy.mean`.  This works for Python, Numpy, Scipy,
-and Pandas (full list is in :file:`doc/conf.py`). Sometimes it is tricky
-to get external Sphinx linking to work; to
-check that a something exists to link to the following shell command outputs
-a list of all objects that can be referenced (in this case for Numpy)::
+and Pandas (full list is in :file:`doc/conf.py`).  If external linking fails,
+you can check the full list of referenceable objects with the following
+commands::
 
+  python -m sphinx.ext.intersphinx 'https://docs.python.org/3/objects.inv'
   python -m sphinx.ext.intersphinx 'https://docs.scipy.org/doc/numpy/objects.inv'
+  python -m sphinx.ext.intersphinx 'https://docs.scipy.org/doc/scipy/reference/objects.inv'
+  python -m sphinx.ext.intersphinx 'https://pandas.pydata.org/pandas-docs/stable/objects.inv'
 
 .. _rst-figures-and-includes: