Merge pull request #13765 from elguitar/fix-11606

Allow spaces in file paths when using sphinx directive Closes:  #11606

IPython/sphinxext/ipython_directive.py

@@ -981,8 +981,9 b' class IPythonDirective(Directive):'
         self.shell.warning_is_error = warning_is_error
 
         # setup bookmark for saving figures directory
-        self.shell.process_input_line('bookmark ipy_savedir %s'%savefig_dir,
-                                      store_history=False)
+        self.shell.process_input_line(
+            'bookmark ipy_savedir "%s"' % savefig_dir, store_history=False
+        )
         self.shell.clear_cout()
 
         return rgxin, rgxout, promptin, promptout