Added savefig.jpeg_quality to the rcParams correctly

With a short one-line doc in matplotlibrc.template.

Author: Daniel Hyams

lib/matplotlib/backend_bases.py

@@ -1952,7 +1952,7 @@ def print_jpg(self, filename_or_obj, *args, **kwargs):
                                                    'progressive'])
 
             if 'quality' not in options: 
-                options['quality'] = rcParams.get('savefig.jpeg_quality',95)
+                options['quality'] = rcParams['savefig.jpeg_quality']
 
             return image.save(filename_or_obj, format='jpeg', **options)
         print_jpeg = print_jpg

lib/matplotlib/rcsetup.py

@@ -687,6 +687,7 @@ def __call__(self, s):
     'savefig.frameon':     [True, validate_bool],
     'savefig.orientation': ['portrait', validate_orientation],  # edgecolor;
                                                                  #white
+    'savefig.jpeg_quality': [95, validate_int],
     # what to add to extensionless filenames
     'savefig.extension':  ['png', deprecate_savefig_extension],
     # value checked by backend at runtime

matplotlibrc.template

@@ -362,14 +362,15 @@ text.hinting_factor : 8 # Specifies the amount of softness for hinting in the
 # the default savefig params can be different from the display params
 # e.g., you may want a higher resolution, or to make the figure
 # background white
-#savefig.dpi        : 100      # figure dots per inch
-#savefig.facecolor  : white    # figure facecolor when saving
-#savefig.edgecolor  : white    # figure edgecolor when saving
-#savefig.format     : png      # png, ps, pdf, svg
-#savefig.bbox       : standard # 'tight' or 'standard'.
-#savefig.pad_inches : 0.1      # Padding to be used when bbox is set to 'tight'
-#savefig.directory  : ~        # default directory in savefig dialog box,
-                               # leave empty to always use current working directory
+#savefig.dpi         : 100      # figure dots per inch
+#savefig.facecolor   : white    # figure facecolor when saving
+#savefig.edgecolor   : white    # figure edgecolor when saving
+#savefig.format      : png      # png, ps, pdf, svg
+#savefig.bbox        : standard # 'tight' or 'standard'.
+#savefig.pad_inches  : 0.1      # Padding to be used when bbox is set to 'tight'
+#savefig.jpeg_quality: 95       # when a jpeg is saved, the default quality parameter.
+#savefig.directory   : ~        # default directory in savefig dialog box,
+                                # leave empty to always use current working directory
 
 # tk backend params
 #tk.window_focus   : False    # Maintain shell focus for TkAgg