！重构代码

Author: wmjordan

App/Functions/Editor/Controller.cs

@@ -605,27 +605,29 @@ internal void MergeBookmark(IList<BookmarkElement> es) {
 			ts[0] = dest.Title;
 			var ct = dest.OwnerDocument.CreateDocumentFragment();
 			for (int i = 1; i < l; i++) {
-				ts[i] = es[i].GetAttribute(Constants.BookmarkAttributes.Title);
-				if (ts[i].Length > 0) {
-					var c = ts[i][0];
+				ref var title = ref ts[i];
+				var be = es[i];
+				title = be.GetAttribute(Constants.BookmarkAttributes.Title);
+				if (title.Length > 0) {
+					var c = title[0];
 					if (c >= 'a' && c <= 'z' || c >= 'A' && c <= 'Z') {
-						ts[i] = " " + ts[i];
+						title = " " + title;
 					}
 				}
-				while (es[i].HasChildNodes) {
-					if (es[i].FirstChild is not XmlElement c) {
+				while (be.HasChildNodes) {
+					if (be.FirstChild is not XmlElement c) {
 						continue;
 					}
 					undo.Add(new AddElementAction(c));
 					ct.AppendChild(c);
 				}
-				if (es[i].ParentNode == p) {
-					undo.Add(new AddElementAction(es[i]));
-					p.RemoveChild(es[i]);
+				if (be.ParentNode == p) {
+					undo.Add(new AddElementAction(be));
+					p.RemoveChild(be);
 				}
-				else /*es[i].ParentNode = es[0]*/ {
-					undo.Add(new AddElementAction(es[i]));
-					dest.RemoveChild(es[i]);
+				else /*be.ParentNode = es[0]*/ {
+					undo.Add(new AddElementAction(be));
+					dest.RemoveChild(be);
 				}
 			}
 			while (ct.HasChildNodes) {

App/Functions/Editor/ViewerControl.cs

@@ -568,7 +568,7 @@ protected override void OnVirtualDraw(PaintEventArgs e) {
 
 			var r = DrawingRectangle.Empty;
 			do {
-				System.Diagnostics.Debug.Assert(p > 0 && p < _mupdf.PageCount + 1, p.ToString());
+				Debug.Assert(p > 0 && p < _mupdf.PageCount + 1, p.ToString());
 				var pb = _pageBounds[p];
 				var z = GetZoomFactorForPage(pb);
 				var ox = HorizontalFlow ? _pageOffsets[p] : 0;

App/Processor/Imaging/WuColorQuantizer.cs

@@ -461,12 +461,12 @@ static QuantizedPalette GetQuantizedPalette(int colorCount, ColorData data, IEnu
 			var lookups = BuildLookups(cubes, data);
 
 			var quantizedPixels = data.QuantizedPixels;
-			for (int index = 0, pixel, red, green; index < imageSize; ++index) {
+			int red, green;
+			for (int index = 0; index < imageSize; ++index) {
 				ref var p = ref quantizedPixels[index];
-				pixel = p;
-				red = pixel >> 16;
-				green = 0xFF & (pixel >> 8);
-				p = lookups.Tags[(red << 10) + (red << 6) + red + (green << 5) + green + (0xFF & pixel)];// red*33*33 + green*33 + blue
+				red = p >> 16;
+				green = 0xFF & (p >> 8);
+				p = lookups.Tags[(red << 10) + (red << 6) + red + (green << 5) + green + (0xFF & p)];// red*33*33 + green*33 + blue
 			}
 
 			var reds = new int[colorCount + 1];