--- old/org.gvsig.scripting/org.gvsig.scripting.app/org.gvsig.scripting.app.mainplugin/src/main/resources-plugin/scripting/lib/console/console.py	2016-09-06 11:49:08.286049214 +0200
+++ new/org.gvsig.scripting/org.gvsig.scripting.app/org.gvsig.scripting.app.mainplugin/src/main/resources-plugin/scripting/lib/console/console.py	2016-09-06 16:21:49.628916688 +0200
@@ -41,7 +41,7 @@
 
         self.frame = frame # TODO do I need a reference to frame after the constructor?
         self.history = History(self)
-        self.bs = 0 # what is this?
+        self.promptPosition = 0
 
         # command buffer
         self.buffer = []
@@ -59,6 +59,7 @@
         keyBindings = [
             (KeyEvent.VK_ENTER, 0, "jython.enter", self.enter),
             (KeyEvent.VK_DELETE, 0, "jython.delete", self.delete),
+            (KeyEvent.VK_BACK_SPACE, 0, "jython.backspace", self.backspace),
             (KeyEvent.VK_HOME, 0, "jython.home", self.home),
             (KeyEvent.VK_UP, 0, "jython.up", self.history.historyUp),
             (KeyEvent.VK_DOWN, 0, "jython.down", self.history.historyDown),
@@ -183,6 +184,20 @@
         self.popup.show()
         self.popup.list.setSelectedIndex(0)
 
+    def beyondPrompt(self, considerCurrent=True, considerSelection=False):
+        """Determines wheter the cursor is in the editable area
+           (i.e. beyond the last prompt position)"""
+        caret = self.output.caretPosition
+        caret0 = caret
+        if considerCurrent:
+            caret = caret + 1
+        if considerSelection:
+            if self.output.selectedText:
+                caret = self.output.selectionEnd
+        if caret > self.promptPosition:
+            return True
+        return False
+
     def inLastLine(self, include = 1):
         """ Determines whether the cursor is in the last line """
         limits = self.__lastLine()
@@ -240,35 +255,40 @@
             self.doc.remove(offset[0], offset[1]-offset[0]-1)
         self.__addOutput(self.infoColor, text)
 
+    def __do_delete(self, event, pos=0):
+        if self.output.selectedText:
+            start = max(self.output.selectionStart, self.promptPosition)
+            self.doc.remove(start, self.output.selectionEnd - start)
+        else:
+            self.doc.remove(self.output.caretPosition + pos, 1)
+
     # don't allow prompt to be deleted
-    # this will cause problems when history can contain multiple lines
     def delete(self, event):
-        """ Intercepts delete events only allowing it to work in the last line """
-        if self.inLastLine():
-            if self.output.selectedText:
-                self.doc.remove(self.output.selectionStart, self.output.selectionEnd - self.output.selectionStart)
-            elif self.output.caretPosition < self.doc.length:
-                self.doc.remove(self.output.caretPosition, 1)
+        """ Intercepts backspace events only allowing it to work in the last line """
+        if self.beyondPrompt(considerCurrent=True, considerSelection=True):
+            self.__do_delete(event)
+
+
+    # don't allow prompt to be deleted
+    def backspace(self, event):
+        """ Intercepts backspace events only allowing it to work in the last line """
+        if self.beyondPrompt(considerCurrent=False, considerSelection=True):
+            self.__do_delete(event, -1)
 
     # why is there a keyTyped and a keyPressed?
     def keyTyped(self, event):
-        #print >> sys.stderr, "keyTyped", event.getKeyCode()
-        if not self.inLastLine():
-            event.consume()
-        if self.bs:
-            event.consume()
-        self.bs=0
+        if not self.beyondPrompt():
+            self.output.setCaretPosition(self.doc.length)
 
     def keyPressed(self, event):
+        # skip Shift + delete and shift + backspace as the are incorrectly managed
+        if event.keyCode == KeyEvent.VK_BACK_SPACE or event.keyCode == KeyEvent.VK_DELETE:
+            if event.modifiers > 0:
+                event.consume()
+
         if self.popup.visible:
             self.popup.key(event)
-        #print >> sys.stderr, "keyPressed", event.getKeyCode()
-        if event.keyCode == KeyEvent.VK_BACK_SPACE:
-            offsets = self.__lastLine()
-            if not self.inLastLine(include=0):
-                self.bs = 1
-            else:
-                self.bs = 0
+
 
     # TODO refactor me
     def write(self, text):
@@ -276,21 +296,27 @@
 
     def printResult(self, msg):
         """ Prints the results of an operation """
-        self.__addOutput(self.output.foreground, "\n" + str(msg))
+        self.__addOutput(self.output.foreground, msg, True)
 
     def printError(self, msg): 
-        self.__addOutput(self.errorColor, "\n" + str(msg))
+        self.__addOutput(self.errorColor, msg, True)
 
     def printOnProcess(self):
         """ Prints the process symbol """
-        self.__addOutput(self.infoColor, "\n" + Console.PROCESS)
+        self.__addOutput(self.infoColor, Console.PROCESS, True)
 
     def printPrompt(self):
         """ Prints the prompt """
-        self.__addOutput(self.infoColor, "\n" + Console.PROMPT)
+        self.__addOutput(self.infoColor, Console.PROMPT, True)
+        self.promptPosition = self.doc.length
 		
-    def __addOutput(self, color, msg):
+    def __addOutput(self, color, msg, new_line=False):
         """ Adds the output to the text area using a given color """
+        if new_line:
+            if isinstance(msg, unicode):
+                msg =  u"\n" + msg
+            else:
+                msg = "\n" + str(msg)
         from javax.swing.text import BadLocationException
         style = SimpleAttributeSet()