Handle the case that gdb.prompt_hook might have an error

gdbinit-gep.py

@@ -472,11 +472,22 @@ def gep_prompt(current_prompt: str) -> None:
         output=create_output(stdout=sys.__stdout__),
     )
     while True:
+        prompt_string = None
         try:
             # emulate the original prompt
             prompt_string = gdb.prompt_hook(current_prompt) if gdb.prompt_hook else None
-            if prompt_string is None:  # prompt string is set by gdb command
+            if prompt_string:
+                # If prompt_string is generated by gdb.prompt_hook, we update the prompt like native GDB
+                safe_prompt_string = "".join(
+                    f"\\{ord(c):o}" if ord(c) < 0x100 else c for c in prompt_string
+                )
+                gdb.execute(f"set prompt {safe_prompt_string}", from_tty=False, to_string=True)
+        except Exception as e:
+            print(f"Python Exception {type(e)}: {e}")
+        finally:
+            if prompt_string is None:
                 prompt_string = gdb.parameter("prompt")
+        try:
             prompt_string = prompt_string.replace("\001", "").replace(
                 "\002", ""
             )  # fix for ANSI prompt