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…ation - Add ensureMessageAlternation() to merge consecutive user messages - Add mergeMessageContent() for safe content combination - Apply fix only to Perplexity providers (perplexity providerID or @ai-sdk/perplexity npm) - Preserve full backward compatibility with all other providers - Add comprehensive test case to prevent regression - Addresses: 'After the (optional) system message(s), user and assistant roles should be alternating' Fixes issue where tools returning attachments created consecutive user messages, causing Perplexity API to reject requests with 400 Bad Request error.
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The following comment was made by an LLM, it may be inaccurate: Based on my search results, I found one potentially related PR: Related PR Found:
This PR might be related as it also addresses the issue of consecutive user messages, which is the core problem your fix addresses for Perplexity Sonar. However, it appears to be an older PR that may have addressed a similar issue differently. The other results (Perplexity websearch integration and TUI layout system) are unrelated to your message alternation fix. |
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Closing this pull request because it has had no updates for more than 60 days. If you plan to continue working on it, feel free to reopen or open a new PR. |
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Problem
Perplexity Sonar models reject requests with 400 error when consecutive user messages are sent (violates alternation requirement).
Solution
Merge consecutive user messages for Perplexity providers only. Preserves all content with
\n\nseparator.Testing
Fixes #9416