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Preserve function content in SummarizingChatReducer - #6908
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Pull Request Overview
Fixes an issue in SummarizingChatReducer where function call content was being removed even when not summarized. The PR preserves function call and result content in the returned message list and improves message boundary detection to avoid orphaning assistant responses from their user messages.
Key changes:
- Preserves
FunctionCallContentandFunctionResultContentin message lists - Implements backward search within threshold window for user message boundaries
- Updates logic to keep complete function call sequences together
Reviewed Changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.
| File | Description |
|---|---|
src/Libraries/Microsoft.Extensions.AI/ChatReduction/SummarizingChatReducer.cs |
Core implementation changes to preserve function content and improve message boundary detection |
test/Libraries/Microsoft.Extensions.AI.Tests/ChatReduction/SummarizingChatReducerTests.cs |
Updated and added tests to verify function content preservation and threshold behavior |
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Summary
Fixes an issue where
SummarizingChatReduceralways removes function call content, even if it didn't get summarized.Description
This PR makes the following changes to
SummarizingChatReducer:FunctionCallContentandFunctionResultContentnow get preserved in the returned message list.targetCount + thresholdmessages.Fixes #6890
Microsoft Reviewers: Open in CodeFlow