Fixed some problems reported in the forum.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@2140 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/Libraries/ICSharpCode.TextEditor/Project/Src/Document/MarkerStrategy/TextMarker.cs

@@ -76,8 +76,7 @@ namespace ICSharpCode.TextEditor.Document
 		
 		public TextMarker(int offset, int length, TextMarkerType textMarkerType, Color color)
 		{
-			if (length < 1)
-				throw new ArgumentOutOfRangeException("length", length, "length must be >= 1");
+			if (length < 1) length = 1;
 			this.offset          = offset;
 			this.length          = length;
 			this.textMarkerType  = textMarkerType;
@@ -86,8 +85,7 @@ namespace ICSharpCode.TextEditor.Document
 		
 		public TextMarker(int offset, int length, TextMarkerType textMarkerType, Color color, Color foreColor)
 		{
-			if (length < 1)
-				throw new ArgumentOutOfRangeException("length", length, "length must be >= 1");
+			if (length < 1) length = 1;
 			this.offset          = offset;
 			this.length          = length;
 			this.textMarkerType  = textMarkerType;

src/Libraries/NRefactory/Project/Src/Lexer/CSharp/Lexer.cs

@@ -776,21 +776,44 @@ namespace ICSharpCode.NRefactory.Parser.CSharp
 				}
 			} else {
 				specialTracker.StartComment(CommentType.Block, new Location(Col, Line));
+				
+				// sc* = special comment handling (TO DO markers)
+				string scTag = null; // is set to non-null value when we are inside a comment marker
+				StringBuilder scCurWord = new StringBuilder(); // current word, (scTag == null) or comment (when scTag != null)
+				Location scStartLocation = Location.Empty;
+				
 				while ((nextChar = ReaderRead()) != -1) {
 					char ch = (char)nextChar;
 					
 					if (HandleLineEnd(ch)) {
+						if (scTag != null) {
+							this.TagComments.Add(new TagComment(scTag, scCurWord.ToString(), scStartLocation, new Location(Col, Line)));
+							scTag = null;
+						}
+						scCurWord.Length = 0;
 						specialTracker.AddString(Environment.NewLine);
 						continue;
 					}
 					
 					// End of multiline comment reached ?
 					if (ch == '*' && ReaderPeek() == '/') {
+						if (scTag != null) {
+							this.TagComments.Add(new TagComment(scTag, scCurWord.ToString(), scStartLocation, new Location(Col, Line)));
+						}
 						ReaderRead();
 						specialTracker.FinishComment(new Location(Col, Line));
 						return;
 					}
 					specialTracker.AddChar(ch);
+					if (scTag != null || IsIdentifierPart(ch)) {
+						scCurWord.Append(ch);
+					} else {
+						if (specialCommentHash != null && specialCommentHash.ContainsKey(scCurWord.ToString())) {
+							scTag = scCurWord.ToString();
+							scStartLocation = new Location(Col, Line);
+						}
+						scCurWord.Length = 0;
+					}
 				}
 				specialTracker.FinishComment(new Location(Col, Line));
 			}

src/Main/Base/Project/Src/Services/ProjectService/ProjectService.cs

@@ -262,6 +262,10 @@ namespace ICSharpCode.SharpDevelop.Project
 				} else {
 					(openSolution.Preferences as IMementoCapable).SetMemento(new Properties());
 				}
+			} catch (Exception ex) {
+				MessageService.ShowError(ex);
+			}
+			try {
 				ApplyConfigurationAndReadPreferences();
 			} catch (Exception ex) {
 				MessageService.ShowError(ex);