Generalize errorbar style normalization.

Shorten to a loop, but mostly fix the comment and name of the test.

Author: QuLogic

lib/matplotlib/axes/_axes.py

@@ -3355,21 +3355,13 @@ def errorbar(self, x, y, yerr=None, xerr=None,
         if ecolor is None:
             ecolor = base_style['color']
 
-        # Eject any marker information from line format string, as it's not
+        # Eject any line-specific information from format string, as it's not
         # needed for bars or caps.
-        base_style.pop('marker', None)
-        base_style.pop('markersize', None)
-        base_style.pop('markerfacecolor', None)
-        base_style.pop('markeredgewidth', None)
-        base_style.pop('markeredgecolor', None)
-        base_style.pop('markevery', None)
-        base_style.pop('linestyle', None)
-        base_style.pop('fillstyle', None)
-        base_style.pop('drawstyle', None)
-        base_style.pop('dash_capstyle', None)
-        base_style.pop('dash_joinstyle', None)
-        base_style.pop('solid_capstyle', None)
-        base_style.pop('solid_joinstyle', None)
+        for key in ['marker', 'markersize', 'markerfacecolor',
+                    'markeredgewidth', 'markeredgecolor', 'markevery',
+                    'linestyle', 'fillstyle', 'drawstyle', 'dash_capstyle',
+                    'dash_joinstyle', 'solid_capstyle', 'solid_joinstyle']:
+            base_style.pop(key, None)
 
         # Make the style dict for the line collections (the bars).
         eb_lines_style = {**base_style, 'color': ecolor}

lib/matplotlib/tests/test_axes.py

@@ -3443,9 +3443,9 @@ def test_errobar_nonefmt():
         assert np.all(errbar.get_color() == mcolors.to_rgba('C0'))
 
 
-def test_errorbar_fillstyle_drawstyle():
-    # Check that passing 'fillstyle' and 'drawstyle' keyword will not
-    # result in errors
+def test_errorbar_line_specific_kwargs():
+    # Check that passing line-specific keyword arguments will not result in
+    # errors.
     x = np.arange(5)
     y = np.arange(5)