Fix remote control scroll-window argument parsing

kitty/rc/scroll_window.py

@@ -40,9 +40,8 @@ class ScrollWindow(RemoteCommand):
         if amt not in ('start', 'end'):
             pages = 'p' in amt
             unscroll = 'u' in amt
-            amt = amt.replace('p', '')
             mult = -1 if amt.endswith('-') and not unscroll else 1
-            q = int(amt.replace('-', ''))
+            q = int(amt.rstrip('+-pu'))
             amount = q * mult, 'p' if pages else ('u' if unscroll else 'l')
 
         return {'match': opts.match, 'amount': amount}