API: change type of matplotlib.rcParamsOrig from dict -> RcParams

tacaswell · anntzer · commit adf696fe8c16 · 2018-08-26T23:00:27.000+02:00
This is to ensure that when IPython get the backend in
IPython.core.pylabtools.find_gui_and_backend the backend resolution is
triggered.
diff --git a/lib/matplotlib/__init__.py b/lib/matplotlib/__init__.py
@@ -1097,10 +1097,10 @@ def rc_params_from_file(fname, fail_on_error=False, use_default_template=True):
         _fullpath = os.path.join(_basedir, rcParams['examples.directory'])
         rcParams['examples.directory'] = _fullpath
 
-rcParamsOrig = rcParams.copy()
 
 with warnings.catch_warnings():
     warnings.simplefilter("ignore", MatplotlibDeprecationWarning)
+    rcParamsOrig = RcParams(rcParams.copy())
     rcParamsDefault = RcParams([(key, default) for key, (default, converter) in
                                 defaultParams.items()
                                 if key not in _all_deprecated])
