fix SD-1743 - Replace all in selection - standard search

src/AddIns/Misc/SearchAndReplace/Project/Engine/Search.cs

@@ -145,7 +145,7 @@ namespace SearchAndReplace
 			if (documentIterator.MoveForward()) {
 				info = documentIterator.Current;
 				// document is valid for searching -> set iterator & fileName
-				if (info != null && info.EndOffset >= 0 && info.EndOffset < info.Document.TextLength) {
+				if (info != null && info.EndOffset >= 0 && info.EndOffset <= info.Document.TextLength) {
 					textIterator = textIteratorBuilder.BuildTextIterator(info);
 				} else {
 					textIterator = null;

src/AddIns/Misc/SearchAndReplace/Project/Gui/SearchAndReplacePanel.cs

@@ -432,7 +432,8 @@ namespace SearchAndReplace
 					SearchReplaceManager.MarkAll(startOffset, endOffset - startOffset, monitor);
 				else if (action == 2)
 					SearchReplaceManager.ReplaceAll(startOffset, endOffset - startOffset, monitor);
-				textEditor.Select(startOffset, endOffset - startOffset);
+				
+				textEditor.Select(startOffset, textEditor.SelectionLength);
 			} finally {
 				ignoreSelectionChanges = false;
 			}

src/Main/Base/Project/Src/Editor/Search/ProvidedDocumentInformation.cs

@@ -40,9 +40,12 @@ namespace ICSharpCode.SharpDevelop.Editor.Search
 		}
 		
 		public int CurrentOffset {
-			get {
+			get {				
 				if (textEditor != null) {
-					return textEditor.Caret.Offset;
+					if (textEditor.SelectionLength > 0)
+						currentOffset = textEditor.SelectionStart;
+					else
+						currentOffset = textEditor.Caret.Offset;
 				}
 				return currentOffset;
 			}