Ticket #8249: 8249.patch

_source/plugins/indent/plugin.js

@@ -425 +425 @@
                                         }
                                 }
                         });
+
+                        editor.on( 'key', function( evt )
+                        {
+                                // Backspace at the beginning of  list item should outdent it.
+                                if ( editor.mode == 'wysiwyg' && evt.data.keyCode == 8 )
+                                {
+                                        var sel = editor.getSelection(),
+                                                start = sel.getStartElement(),
+                                                path = new CKEDITOR.dom.elementPath( start ),
+                                                block = path.block;
+
+                                        if ( block && ( block.is( 'li' ) || block.getParent().is( 'li' ) ) )
+                                        {
+                                                var range = sel.getRanges()[ 0 ];
+                                                if ( range.checkStartOfBlock() )
+                                                {
+                                                        editor.execCommand( 'outdent' );
+                                                        evt.cancel();
+                                                }
+                                        }
+                                }
+                        });
                 },
 
                 requires : [ 'domiterator', 'list' ]