From 1f8fca00450edffa75e3f3d6eb99d538798c7487 Mon Sep 17 00:00:00 2001
From: Ben McHone <ben@mchone.dev>
Date: Thu, 30 Oct 2025 22:00:32 -0500
Subject: [PATCH] fix(XMLAdapter): Implement user message formatting

---
 dspy/adapters/xml_adapter.py       | 25 +++++++++++++++++++++++++
 tests/adapters/test_xml_adapter.py |  2 +-
 2 files changed, 26 insertions(+), 1 deletion(-)

diff --git a/dspy/adapters/xml_adapter.py b/dspy/adapters/xml_adapter.py
index 4c0084d2cb..662b1d2868 100644
--- a/dspy/adapters/xml_adapter.py
+++ b/dspy/adapters/xml_adapter.py
@@ -41,6 +41,31 @@ def format_signature_fields_for_instructions(fields: dict[str, FieldInfo]):
         parts.append(format_signature_fields_for_instructions(signature.output_fields))
         return "\n\n".join(parts).strip()
 
+    def format_user_message_content(
+        self,
+        signature: type[Signature],
+        inputs: dict[str, Any],
+        prefix: str = "",
+        suffix: str = "",
+        main_request: bool = False,
+    ) -> str:
+        messages = [prefix]
+
+        messages.append(self.format_field_with_value(
+            {
+                FieldInfoWithName(name=k, info=v): inputs.get(k)
+                for k, v in signature.input_fields.items() if k in inputs
+            },
+        ))
+
+        if main_request:
+            output_requirements = self.user_message_output_requirements(signature)
+            if output_requirements is not None:
+                messages.append(output_requirements)
+
+        messages.append(suffix)
+        return "\n\n".join(messages).strip()
+
     def format_assistant_message_content(
         self,
         signature: type[Signature],
diff --git a/tests/adapters/test_xml_adapter.py b/tests/adapters/test_xml_adapter.py
index 4a0844b37a..d831690c90 100644
--- a/tests/adapters/test_xml_adapter.py
+++ b/tests/adapters/test_xml_adapter.py
@@ -291,7 +291,7 @@ class QA(dspy.Signature):
     )
 
     expected_user = (
-        "[[ ## query ## ]]\nwhen was Marie Curie born\n\n"
+        "<query>\nwhen was Marie Curie born\n</query>\n\n"
         "Respond with the corresponding output fields wrapped in XML tags `<answer>`."
     )