Implement telescope folding for multiple runs

pwndbg/commands/telescope.py

@@ -62,10 +62,23 @@ def telescope(address=None, count=8, to_string=False):
 
     # Print everything out
     result = []
+    last   = None
+    skip   = False
     for i,addr in enumerate(range(start, stop, step)):
         if not pwndbg.memory.peek(addr):
             result.append("<Could not read memory at %#x>" % addr)
             break
+
+        # Collapse repeating values.
+        value = pwndbg.memory.pvoid(addr)
+        if last == value:
+            if not skip:
+                result.append('...')
+                skip = True
+            continue
+        last = value
+        skip = False
+
         line = ' '.join(("%02x:%04x|" % (i, addr-start),
                          regs[addr].ljust(longest_regs),
                          pwndbg.chain.format(addr)))