From 1eca4e4578bce1ac10256ec4e6a983c313894889 Mon Sep 17 00:00:00 2001
From: Dongdong Tian <seisman.info@gmail.com>
Date: Wed, 24 Apr 2024 10:40:09 +0800
Subject: [PATCH] non_ascii_to_octal: Return the input string if it only
 contains printable ASCII characters

---
 pygmt/helpers/utils.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pygmt/helpers/utils.py b/pygmt/helpers/utils.py
index 1732dfb4e3f..7b06e6dc731 100644
--- a/pygmt/helpers/utils.py
+++ b/pygmt/helpers/utils.py
@@ -233,6 +233,10 @@ def non_ascii_to_octal(argstr):
     >>> non_ascii_to_octal("ABC ±120° DEF α ♥")
     'ABC \\261120\\260 DEF @~\\141@~ @%34%\\252@%%'
     """  # noqa: RUF002
+    # Return the string if it only contains printable ASCII characters from 32 to 126.
+    if all(32 <= ord(c) <= 126 for c in argstr):
+        return argstr
+
     # Dictionary mapping non-ASCII characters to octal codes
     mapping = {}