Modified autocomplete compare way

Modified the way that match autocompletion items, in order to get all that contains selected text, instead of filter only those that start with. For example, if you have 2 words "checked" and "unchecked" and search for "ch", you will find "checked" at first, and then "unchecked" because "unchecked" contains "ch" too.

FastColoredTextBox/AutocompleteItem.cs

@@ -59,7 +59,7 @@ public virtual string GetTextForReplace()
         /// </summary>
         public virtual CompareResult Compare(string fragmentText)
         {
-            if (Text.StartsWith(fragmentText, StringComparison.InvariantCultureIgnoreCase) &&
+            if(string.IsNullOrEmpty(fragmentText) || Text.ToLowerInvariant().Contains(fragmentText.ToLowerInvariant()) &&
                    Text != fragmentText)
                 return CompareResult.VisibleAndSelected;
 

FastColoredTextBox/AutocompleteMenu.cs

@@ -402,23 +402,35 @@ internal void DoAutocomplete(bool forced)
                 && (tb.Selection.Start > fragment.Start || text.Length == 0/*pops up only if caret is after first letter*/)))
             {
                 Menu.Fragment = fragment;
-                bool foundSelected = false;
+                //bool foundSelected = false;
+                AutocompleteItem foundItem = null;
                 //build popup menu
                 foreach (var item in sourceItems)
                 {
                     item.Parent = Menu;
                     CompareResult res = item.Compare(text);
                     if(res != CompareResult.Hidden)
                         visibleItems.Add(item);
-                    if (res == CompareResult.VisibleAndSelected && !foundSelected)
+                    if (res == CompareResult.VisibleAndSelected && foundItem != null)
                     {
-                        foundSelected = true;
-                        FocussedItemIndex = visibleItems.Count - 1;
+                        foundItem = item;
+                        //FocussedItemIndex = visibleItems.Count - 1;
                     }
                 }
 
-                if (foundSelected)
+                visibleItems.Sort((AutocompleteItem a, AutocompleteItem b)=> {
+                    var indexA = a.Text.IndexOf(text);
+                    var indexB = b.Text.IndexOf(text);
+
+                    return indexA - indexB;
+
+                });
+
+                if (foundItem != null)
                 {
+
+                    FocussedItemIndex = visibleItems.IndexOf(foundItem);
+
                     AdjustScroll();
                     DoSelectedVisible();
                 }