deepseek: Fix empty text segments causing issues#52199
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## Context
Deepseek seems to have started to return empty text deltas, which causes
issues cause their upstream API does not like empty text blocks to be
included in their request.
In practice this caused issues like `An assistant message with
'tool_calls' must be followed by tool messages responding to each
'tool_call_id'..., because the payload looked like this:
```
User {
content: "Call the now tool a bunch of times",
},
Assistant {
content: Some(
"",
),
},
Tool {
content: "The current datetime is 2026-03-23T13:21:24.084848+00:00.",
tool_call_id: "call_00_iozCfHXJAPR13XwHiAwJ9OEw",
},
```
Now we filter out that empty text, which seems to fix the issue. This
matches our implementation for OpenAI
Closes #51854
<!-- What does this PR do, and why? How is it expected to impact users?
Not just what changed, but what motivated it and why this approach.
Link to Linear issue (e.g., ENG-123) or GitHub issue (e.g., Closes #456)
if one exists — helps with traceability. -->
## How to Review
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## Self-Review Checklist
<!-- Check before requesting review: -->
- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable
Release Notes:
- deepseek: Fixed issue with tool calling (`An assistant message with
'tool_calls' must be followed by tool messages responding to each
'tool_call_id'...`)
5 tasks
github-actions bot
pushed a commit
that referenced
this pull request
Mar 23, 2026
## Context
Deepseek seems to have started to return empty text deltas, which causes
issues cause their upstream API does not like empty text blocks to be
included in their request.
In practice this caused issues like `An assistant message with
'tool_calls' must be followed by tool messages responding to each
'tool_call_id'..., because the payload looked like this:
```
User {
content: "Call the now tool a bunch of times",
},
Assistant {
content: Some(
"",
),
},
Tool {
content: "The current datetime is 2026-03-23T13:21:24.084848+00:00.",
tool_call_id: "call_00_iozCfHXJAPR13XwHiAwJ9OEw",
},
```
Now we filter out that empty text, which seems to fix the issue. This
matches our implementation for OpenAI
Closes #51854
<!-- What does this PR do, and why? How is it expected to impact users?
Not just what changed, but what motivated it and why this approach.
Link to Linear issue (e.g., ENG-123) or GitHub issue (e.g., Closes #456)
if one exists — helps with traceability. -->
## How to Review
<!-- Help reviewers focus their attention:
- For small PRs: note what to focus on (e.g., "error handling in
foo.rs")
- For large PRs (>400 LOC): provide a guided tour — numbered list of
files/commits to read in order. (The `large-pr` label is applied
automatically.)
- See the review process guidelines for comment conventions -->
## Self-Review Checklist
<!-- Check before requesting review: -->
- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable
Release Notes:
- deepseek: Fixed issue with tool calling (`An assistant message with
'tool_calls' must be followed by tool messages responding to each
'tool_call_id'...`)
5 tasks
zed-zippy bot
added a commit
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Mar 23, 2026
…k to stable) (#52207) Cherry-pick of #52199 to stable ---- ## Context Deepseek seems to have started to return empty text deltas, which causes issues cause their upstream API does not like empty text blocks to be included in their request. In practice this caused issues like `An assistant message with 'tool_calls' must be followed by tool messages responding to each 'tool_call_id'..., because the payload looked like this: ``` User { content: "Call the now tool a bunch of times", }, Assistant { content: Some( "", ), }, Tool { content: "The current datetime is 2026-03-23T13:21:24.084848+00:00.", tool_call_id: "call_00_iozCfHXJAPR13XwHiAwJ9OEw", }, ``` Now we filter out that empty text, which seems to fix the issue. This matches our implementation for OpenAI Closes #51854 <!-- What does this PR do, and why? How is it expected to impact users? Not just what changed, but what motivated it and why this approach. Link to Linear issue (e.g., ENG-123) or GitHub issue (e.g., Closes #456) if one exists — helps with traceability. --> ## How to Review <!-- Help reviewers focus their attention: - For small PRs: note what to focus on (e.g., "error handling in foo.rs") - For large PRs (>400 LOC): provide a guided tour — numbered list of files/commits to read in order. (The `large-pr` label is applied automatically.) - See the review process guidelines for comment conventions --> ## Self-Review Checklist <!-- Check before requesting review: --> - [x] I've reviewed my own diff for quality, security, and reliability - [x] Unsafe blocks (if any) have justifying comments - [x] The content is consistent with the [UI/UX checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist) - [x] Tests cover the new/changed behavior - [x] Performance impact has been considered and is acceptable Release Notes: - deepseek: Fixed issue with tool calling (`An assistant message with 'tool_calls' must be followed by tool messages responding to each 'tool_call_id'...`) Co-authored-by: Bennet Bo Fenner <bennet@zed.dev>
zed-zippy bot
added a commit
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Mar 23, 2026
…k to preview) (#52206) Cherry-pick of #52199 to preview ---- ## Context Deepseek seems to have started to return empty text deltas, which causes issues cause their upstream API does not like empty text blocks to be included in their request. In practice this caused issues like `An assistant message with 'tool_calls' must be followed by tool messages responding to each 'tool_call_id'..., because the payload looked like this: ``` User { content: "Call the now tool a bunch of times", }, Assistant { content: Some( "", ), }, Tool { content: "The current datetime is 2026-03-23T13:21:24.084848+00:00.", tool_call_id: "call_00_iozCfHXJAPR13XwHiAwJ9OEw", }, ``` Now we filter out that empty text, which seems to fix the issue. This matches our implementation for OpenAI Closes #51854 <!-- What does this PR do, and why? How is it expected to impact users? Not just what changed, but what motivated it and why this approach. Link to Linear issue (e.g., ENG-123) or GitHub issue (e.g., Closes #456) if one exists — helps with traceability. --> ## How to Review <!-- Help reviewers focus their attention: - For small PRs: note what to focus on (e.g., "error handling in foo.rs") - For large PRs (>400 LOC): provide a guided tour — numbered list of files/commits to read in order. (The `large-pr` label is applied automatically.) - See the review process guidelines for comment conventions --> ## Self-Review Checklist <!-- Check before requesting review: --> - [x] I've reviewed my own diff for quality, security, and reliability - [x] Unsafe blocks (if any) have justifying comments - [x] The content is consistent with the [UI/UX checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist) - [x] Tests cover the new/changed behavior - [x] Performance impact has been considered and is acceptable Release Notes: - deepseek: Fixed issue with tool calling (`An assistant message with 'tool_calls' must be followed by tool messages responding to each 'tool_call_id'...`) Co-authored-by: Bennet Bo Fenner <bennet@zed.dev>
AmaanBilwar
pushed a commit
to AmaanBilwar/zed
that referenced
this pull request
Mar 23, 2026
## Context
Deepseek seems to have started to return empty text deltas, which causes
issues cause their upstream API does not like empty text blocks to be
included in their request.
In practice this caused issues like `An assistant message with
'tool_calls' must be followed by tool messages responding to each
'tool_call_id'..., because the payload looked like this:
```
User {
content: "Call the now tool a bunch of times",
},
Assistant {
content: Some(
"",
),
},
Tool {
content: "The current datetime is 2026-03-23T13:21:24.084848+00:00.",
tool_call_id: "call_00_iozCfHXJAPR13XwHiAwJ9OEw",
},
```
Now we filter out that empty text, which seems to fix the issue. This
matches our implementation for OpenAI
Closes zed-industries#51854
<!-- What does this PR do, and why? How is it expected to impact users?
Not just what changed, but what motivated it and why this approach.
Link to Linear issue (e.g., ENG-123) or GitHub issue (e.g., Closes zed-industries#456)
if one exists — helps with traceability. -->
## How to Review
<!-- Help reviewers focus their attention:
- For small PRs: note what to focus on (e.g., "error handling in
foo.rs")
- For large PRs (>400 LOC): provide a guided tour — numbered list of
files/commits to read in order. (The `large-pr` label is applied
automatically.)
- See the review process guidelines for comment conventions -->
## Self-Review Checklist
<!-- Check before requesting review: -->
- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable
Release Notes:
- deepseek: Fixed issue with tool calling (`An assistant message with
'tool_calls' must be followed by tool messages responding to each
'tool_call_id'...`)
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Context
Deepseek seems to have started to return empty text deltas, which causes issues cause their upstream API does not like empty text blocks to be included in their request.
In practice this caused issues like `An assistant message with 'tool_calls' must be followed by tool messages responding to each 'tool_call_id'..., because the payload looked like this:
Now we filter out that empty text, which seems to fix the issue. This matches our implementation for OpenAI
Closes #51854
How to Review
Self-Review Checklist
Release Notes:
An assistant message with 'tool_calls' must be followed by tool messages responding to each 'tool_call_id'...)