fix(XMLAdapter): strip str values that contain inline tags

The branch that keeps inline markup (e.g. <b>) in a str field returned the
raw text with its surrounding newlines, while plain-text values are stripped.
Strip it too, so the parsed value matches the streamed value.

Amp-Thread-ID: https://ampcode.com/threads/T-01a12205-ee56-76b8-bf88-29e3d8708bff
Co-authored-by: Isaac Miller <isaac@cmpnd.ai>

Author: ampagent

dspy/adapters/xml_adapter.py

@@ -201,7 +201,7 @@ def _elements_to_value(cls, elements: list[ET.Element], schema: dict, definition
             return [cls._elements_to_value([element], schema.get("items", {}), definitions) for element in elements]
         element = elements[0]
         if schema.get("type") == "string" and list(element):
-            return (element.text or "") + "".join(ET.tostring(child, encoding="unicode") for child in element)
+            return ((element.text or "") + "".join(ET.tostring(child, encoding="unicode") for child in element)).strip()
         children = cls._group_children(element)
         if not children:
             if schema.get("type") == "object" and not (element.text or "").strip():

tests/adapters/test_xml_adapter.py

@@ -44,6 +44,16 @@ class TestSignature(dspy.Signature):
     assert parsed == {"answer": "Paris", "explanation": "The capital of France is Paris."}
 
 
+def test_xml_adapter_parse_strips_str_value_with_inline_tags():
+    class TestSignature(dspy.Signature):
+        question: str = dspy.InputField()
+        answer: str = dspy.OutputField()
+
+    completion = "<answer>\nUse <b>bold</b> text.\n\nNext para.\n</answer>"
+    parsed = XMLAdapter().parse(TestSignature, completion)
+    assert parsed == {"answer": "Use <b>bold</b> text.\n\nNext para."}
+
+
 def test_xml_adapter_parse_raises_on_missing_field():
     class TestSignature(dspy.Signature):
         question: str = dspy.InputField()