do not include empty lines in section fold

lib/ace/mode/folding/cstyle.js

@@ -73,7 +73,7 @@ oop.inherits(FoldMode, BaseFoldMode);
             return range;
         }
 
-        if (foldStyle !== "markbeginend")
+        if (foldStyle === "markbegin")
             return;
 
         var match = line.match(this.foldingStopMarker);
@@ -105,10 +105,11 @@ oop.inherits(FoldMode, BaseFoldMode);
             var subRange = this.getFoldWidgetRange(session, "all", row);
             
             if (subRange) {
-                if (subRange.isMultiLine()) {
+                if (subRange.start.row <= startRow) {
+                    break;
+                } else if (subRange.isMultiLine()) {
                     row = subRange.end.row;
                 } else if (startIndent == indent) {
-                    endRow = row - 1;
                     break;
                 }
             }

lib/ace/mode/folding/cstyle_test.js

@@ -76,6 +76,30 @@ module.exports = {
         
         assert.range(session.getFoldWidgetRange(0), 0, 2, 2, 7);
         assert.range(session.getFoldWidgetRange(2), 0, 2, 2, 7);
+    },
+    
+    "test: fold sections": function() {
+        var session = new EditSession([
+            '/* section0 */',
+            '{',
+            '    /* section1 */',
+            '    stuff',
+            '       ',
+            '    /* section2 */',
+            '       ',
+            '    stuff',
+            '       ',
+            '     }',
+            'foo'
+        ]);
+        
+        var mode = new JavaScriptMode();
+        session.setFoldStyle("markbegin");
+        session.setMode(mode);
+        
+        assert.range(session.getFoldWidgetRange(0, true), 0, 14, 10, 3);
+        assert.range(session.getFoldWidgetRange(2, true), 2, 18, 3, 9);
+        assert.range(session.getFoldWidgetRange(5, true), 5, 18, 7, 9);
     }
 };