From 7f944ae18b9d82161ace58adfdde73a1202fffc8 Mon Sep 17 00:00:00 2001
From: Dongdong Tian <seisman.info@gmail.com>
Date: Mon, 29 Apr 2024 23:15:26 +0800
Subject: [PATCH] fix

---
 pygmt/encodings.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pygmt/encodings.py b/pygmt/encodings.py
index 32ba6bec62a..d006e1ca031 100644
--- a/pygmt/encodings.py
+++ b/pygmt/encodings.py
@@ -7,10 +7,11 @@
 >>>
 >>> mappings = charset["symbol"]
 >>>
+>>> undefined = "\ufffd"
 >>> markdown = "| octal | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |\n"
 >>> markdown += "|---|---|---|---|---|---|---|---|---|\n"
 >>> for i in range(0o040, 0o400, 8):
-...     chars = [f'&#x{ord(mappings.get(i, "\ufffd")):04x};' for i in range(i, i + 8)]
+...     chars = [f"&#x{ord(mappings.get(i, undefined)):04x};" for i in range(i, i + 8)]
 ...     if all(c == chars[0] for c in chars):
 ...         continue
 ...     row = f"\\{i:03o}"[:-1] + "x"