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Markdown being stripped #7883

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opened 2026-02-16 18:08:34 -05:00 by yindo · 1 comment
yindo commented 2026-02-16 18:08:34 -05:00
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Originally created by @joneslloyd on GitHub (Jan 28, 2026).

Originally assigned to: @rekram1-node on GitHub.

Description

I have a custom instruction in /Users/me/.config/opencode/instructions/formatting.md containing among other things:

# Response Formatting Requirements

Always structure your responses using clear markdown formatting:

- By default don't put information into tables for questions (but do put information into tables when creating or updating files)
- Use headings (##, ###) to organise sections, always
- Use bullet points or numbered lists for multiple items
- Use code blocks with language tags for any code
- Use **bold** for key terms and emphasis
- Use tables when comparing options or listing structured data
- Break long responses into logical sections with headings

And a config file in /Users/me/.config/opencode/opencode.json containing:

{
  "$schema": "https://opencode.ai/config.json",
  "instructions": ["~/.config/opencode/instructions/formatting.md"]
}

When I ask a question, every time the markdown headers are stripped from the response (at least when using both Opus 4.5 and also Kimi K2.5).

What's interesting is that:

  • No other markdown (asterisks etc) is removed, only the hashes # (or "pound sign" as y'all say)
  • It is capable of adding full markdown headings when writing to a file (whatever.md) but it strips them when writing to the terminal

Plugins

None (fresh install)

OpenCode version

1.1.39

Steps to reproduce

  • Add a custom instruction (or don't – It makes no difference)
  • Ask for a response in markdown
  • Check the terminal
  • Even if I explicitly ask for it to re-send as markdown with the hierarchical headings preserved, they are still absent (it believes they're there)

Screenshot and/or share link

No response

Operating System

macOS 26.2

Terminal

Warp

Originally created by @joneslloyd on GitHub (Jan 28, 2026). Originally assigned to: @rekram1-node on GitHub. ### Description I have a custom instruction in `/Users/me/.config/opencode/instructions/formatting.md` containing among other things: ``` # Response Formatting Requirements Always structure your responses using clear markdown formatting: - By default don't put information into tables for questions (but do put information into tables when creating or updating files) - Use headings (##, ###) to organise sections, always - Use bullet points or numbered lists for multiple items - Use code blocks with language tags for any code - Use **bold** for key terms and emphasis - Use tables when comparing options or listing structured data - Break long responses into logical sections with headings ``` And a config file in `/Users/me/.config/opencode/opencode.json` containing: ``` { "$schema": "https://opencode.ai/config.json", "instructions": ["~/.config/opencode/instructions/formatting.md"] } ``` When I ask a question, every time the markdown headers are stripped from the response (at least when using both Opus 4.5 and also Kimi K2.5). What's interesting is that: - No other markdown (asterisks etc) is removed, only the hashes `#` (or "pound sign" as y'all say) - It _is_ capable of adding full markdown headings when writing to a file (`whatever.md`) but it strips them when writing to the terminal ### Plugins None (fresh install) ### OpenCode version 1.1.39 ### Steps to reproduce - Add a custom instruction (or don't – It makes no difference) - Ask for a response in markdown - Check the terminal - Even if I explicitly ask for it to re-send as markdown with the hierarchical headings preserved, they are still absent (it believes they're there) ### Screenshot and/or share link _No response_ ### Operating System macOS 26.2 ### Terminal Warp
yindo added the bug label 2026-02-16 18:08:34 -05:00
yindo commented 2026-02-16 18:08:34 -05:00
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@github-actions[bot] commented on GitHub (Jan 28, 2026):

This issue might be a duplicate of existing issues. Please check:

  • #5675: markdown user messages aren't formatted
  • #5591: Quotes in code getting stripped in model output
  • #8222: JSON code blocks strip quotation marks in TUI markdown renderer
  • #8733: Subagent not reading markdown instructions from agent definition file
  • #7671: Markdown table formatting
  • #7779: GLM 4.7 thinking process not properly formatted - missing leading tags
  • #10419: Desktop: markdown rendering issue
  • #9899: The TUI is merging lines of text when the terminal window is small
  • #10998: Run Command message won't display command ran in Zed

These issues suggest a pattern of markdown formatting being stripped or improperly rendered in terminal output, particularly in the TUI markdown renderer. Feel free to ignore if none of these address your specific case.

@github-actions[bot] commented on GitHub (Jan 28, 2026): This issue might be a duplicate of existing issues. Please check: - #5675: markdown user messages aren't formatted - #5591: Quotes in code getting stripped in model output - #8222: JSON code blocks strip quotation marks in TUI markdown renderer - #8733: Subagent not reading markdown instructions from agent definition file - #7671: Markdown table formatting - #7779: GLM 4.7 thinking process not properly formatted - missing leading tags - #10419: Desktop: markdown rendering issue - #9899: The TUI is merging lines of text when the terminal window is small - #10998: Run Command message won't display command ran in Zed These issues suggest a pattern of markdown formatting being stripped or improperly rendered in terminal output, particularly in the TUI markdown renderer. Feel free to ignore if none of these address your specific case.
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Reference: anomalyco/opencode#7883
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