fix bug in show-hints inset

Author: alirrah

addon/hint/show-hint.js

@@ -255,6 +255,7 @@
     }
 
     var container = completion.options.container || ownerDocument.body;
+    var marginBottom = completion.options.marginBottom || 0;
     var pos = cm.cursorCoords(completion.options.alignWithWord ? data.from : null);
     var left = pos.left, top = pos.bottom, below = true;
     var offsetLeft = 0, offsetTop = 0;
@@ -285,12 +286,12 @@
     var startScroll;
     setTimeout(function() { startScroll = cm.getScrollInfo(); });
 
-    var overlapY = box.bottom - winH;
+    var overlapY = box.bottom + marginBottom - winH;
     if (overlapY > 0) { // Does not fit below
       var height = box.bottom - box.top, spaceAbove = box.top - (pos.bottom - pos.top) - 2
       if (winH - box.top < spaceAbove) { // More room at the top
         if (height > spaceAbove) hints.style.height = (height = spaceAbove) + "px";
-        hints.style.top = ((top = pos.top - height) + offsetTop) + "px";
+        hints.style.top = (top = pos.top - height) - offsetTop + "px";
         below = false;
       } else {
         hints.style.height = (winH - box.top - 2) + "px";