From 008648f47c0eb8db87e989174ee3709ebe09138e Mon Sep 17 00:00:00 2001
From: Anthony Sottile <asottile@umich.edu>
Date: Tue, 8 Oct 2024 12:03:06 -0400
Subject: [PATCH] make style=... consistent for unquoted scalar tokens

---
 lib/yaml/scanner.py |  2 +-
 tests/test_scan.py  | 18 ++++++++++++++++++
 2 files changed, 19 insertions(+), 1 deletion(-)
 create mode 100644 tests/test_scan.py

diff --git a/lib/yaml/scanner.py b/lib/yaml/scanner.py
index de925b07..4cea1a2e 100644
--- a/lib/yaml/scanner.py
+++ b/lib/yaml/scanner.py
@@ -1306,7 +1306,7 @@ def scan_plain(self):
             if not spaces or self.peek() == '#' \
                     or (not self.flow_level and self.column < indent):
                 break
-        return ScalarToken(''.join(chunks), True, start_mark, end_mark)
+        return ScalarToken(''.join(chunks), True, start_mark, end_mark, style='')
 
     def scan_plain_spaces(self, indent, start_mark):
         # See the specification for details.
diff --git a/tests/test_scan.py b/tests/test_scan.py
new file mode 100644
index 00000000..fa65610b
--- /dev/null
+++ b/tests/test_scan.py
@@ -0,0 +1,18 @@
+import pytest
+
+import yaml
+from yaml.tokens import StreamStartToken, ScalarToken, StreamEndToken
+
+
+_loaders = (yaml.SafeLoader,)
+if yaml.__with_libyaml__:
+    _loaders += (yaml.CSafeLoader,)
+
+
+@pytest.mark.parametrize('loader_cls', _loaders)
+def test_scan_produces_empty_string_style_for_scalar_node(loader_cls):
+    start, scalar, end = yaml.scan('example', Loader=loader_cls)
+    assert isinstance(start, StreamStartToken)
+    assert isinstance(scalar, ScalarToken)
+    assert scalar.style == ''
+    assert isinstance(end, StreamEndToken)