DEL key does not work in booish command line about boo HOT 1 OPEN

The following DIFF describes a fix. Additionally, the ESCAPE key can be used to delete the whole line.

diff --git "a/C:\\DOKUME~1\\Harald\\LOKALE~1\\Temp\\TortoiseGit\\Int8CA.tmp\\InteractiveInterpreterConsole-8981b6c-left.boo" "b/C:\\Boo\\boo_master\\boo\\src\\Boo.Lang.Interpreter\\InteractiveInterpreterConsole.boo"
index 300dd92..3494ef9 100644
--- "a/C:\\DOKUME~1\\Harald\\LOKALE~1\\Temp\\TortoiseGit\\Int8CA.tmp\\InteractiveInterpreterConsole-8981b6c-left.boo"
+++ "b/C:\\Boo\\boo_master\\boo\\src\\Boo.Lang.Interpreter\\InteractiveInterpreterConsole.boo"
@@ -257,11 +257,13 @@ class InteractiveInterpreterConsole:
        _indent--
 
    protected def Delete(count as int): #if count is 0, forward-delete
+       return if LineLen == 0
        cx = Console.CursorLeft-len(CurrentPrompt)-count
-       return if cx < LineLen and count == 0
+       count=1 if cx >= LineLen and count == 0
+       return if cx >= LineLen
        dcount = (count if count != 0 else 1)
        _line.Remove(cx, dcount)
-       curX = Console.CursorLeft - dcount
+       curX = Console.CursorLeft - count
        Console.CursorLeft = curX
        Console.Write("${_line.ToString(cx, LineLen-cx)} ")
        Console.CursorLeft = curX
@@ -368,7 +370,16 @@ class InteractiveInterpreterConsole:
                    DisplaySuggestions()
                else:
                    Indent()
-
+           
+           # delete the whole line
+           if key == ConsoleKey.Escape:
+               curX = len(CurrentPrompt)
+               sizeL = _line.Length
+               _line.Remove(0, sizeL)
+               Console.CursorLeft = curX
+               Console.Write(string(' '[0], sizeL))
+               Console.CursorLeft = curX
+           
            #line-editing support
            if not _multiline and LineLen > 0:
                if Console.CursorLeft > len(CurrentPrompt):
@@ -580,7 +591,7 @@ Enter boo code in the prompt below (or type /help)."""
        WithColor color:
            for problem as duck in problems:
                markLocation(problem.LexicalInfo)
-               type = ("WARNING", "ERROR")[problem isa CompilerError]
+               type = ("ERROR" if problem isa CompilerError else "WARNING")
                Console.WriteLine("${type}: ${problem.Message}")
        return true

from boo.