Implement the NSText kill buffer. Ctrl-k and Ctrl-y in a text view now

work as under Emacs and OS X.


git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@29585 72102866-910b-0410-8b05-ffd578937521

Source/NSTextView_actions.m

@@ -115,6 +115,12 @@ send -shouldChangeTextInRange:replacementString: or -didChangeText.
 
 */
 
+/* global kill buffer shared between all text views */
+/* Note: I'm not using an attributed string here because Apple apparently is
+   using a plain string either. Maybe this is because NeXT was using the X11
+   cut buffer for the kill buffer, which can hold only plain strings? */
+static NSString *killBuffer = @"";
+  
 /** First some helpers **/
 
 @interface NSTextView (UserActionHelpers)
@@ -697,12 +703,18 @@ static NSNumber *float_plus_one(NSNumber *cur)
       return;
     }
 
+  ASSIGN(killBuffer, [[_textStorage string] substringWithRange: range]);
   [_textStorage beginEditing];
   [_textStorage deleteCharactersInRange: range];
   [_textStorage endEditing];
   [self didChangeText];
 }
 
+- (void) yank: (id)sender
+{
+  [self insertText: killBuffer];
+}
+
 
 /*
 TODO: find out what affinity is supposed to mean