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Markdown being stripped #11048
Description
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
Activity
github-actions commentedon Jan 28, 2026
This issue might be a duplicate of existing issues. Please check:
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 commentedon Apr 1, 2026
To stay organized issues are automatically closed after 90 days of no activity. If the issue is still relevant please open a new one.