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Markdown tables display as plain text instead of formatted tables #3845

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Markdown tables display as plain text instead of formatted tables#3845
#10900 (+2)
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kommander
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bugSomething isn't workingopentuiThis relates to changes in v1.0, now that opencode uses opentui

Description

@falcon-head
falcon-head
opened on Nov 3, 2025

Description

Description

When OpenCode generates a response containing markdown table syntax, the tables are not being rendered as formatted ASCII/text tables in the terminal output. Instead, the raw markdown syntax is displayed.

Expected Behavior

When the AI assistant outputs a comparison table or any tabular data, it should render as a properly formatted text-based table with borders and alignment in the terminal.

Actual Behavior

The raw markdown table syntax is displayed as-is in the terminal, making it difficult to read the comparison data.

Additional Context

  • Tested with GitHub Copilot provider
  • Using OpenCode version 1.0.16
  • Mac OS 26.0.1 with Kitty terminal

OpenCode version

1.0.16

Steps to reproduce

  1. Go to model selector
  2. Select any model that you have active subscription to (tested with GitHub Copilot)
  3. Ask it to output a comparison table (e.g., "compare GPT-4 vs Claude")
  4. Raw markdown text gets displayed instead of formatted table

Screenshot and/or share link

Image

Operating System

Mac os 26.0.1

Terminal

Kitty terminal

Activity

  1. falcon-head
    added
    bugSomething isn't working
    on Nov 3, 2025
  2. github-actions
    added
    opentuiThis relates to changes in v1.0, now that opencode uses opentui
    on Nov 3, 2025

  3. github-actions commented on Nov 3, 2025

    @github-actions
    github-actionsBot
    on Nov 3, 2025 – with GitHub Actions
    Contributor

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

    Feel free to ignore if none of these address your specific case.

  4. rekram1-node
    marked Markdown Table Rendering issues #2166 as a duplicate of this issue on Nov 3, 2025
  5. rekram1-node
    unmarked Markdown Table Rendering issues #2166 as a duplicate of this issue on Nov 3, 2025
  6. thdxr
    assigned
    kommander
    on Nov 3, 2025

  7. maxandron commented on Nov 11, 2025

    @maxandron
    maxandron
    on Nov 11, 2025
    Contributor

    Hi, I started tinkering as this issue was bothering me recently. I'll be happy to take a crack at it, but there is a design decision to make here, both in regards to styling and in regards to handling of tables that overflow

    In general I thought to follow a similar direction to the way markdown renders work in nvim.
    Turning something like this:

    Image

    To this:

    Image

    The problem is with large tables.

    In raw form they currently render like this: (messed up but somewhat readable)

    Image

    One possible direction to take here is to truncate columns based on the terminal's width:

    Image

    But then that require "teaching" the user to turn off code concealement to see the full text (which can be added as a hint below a truncated table)

    But maybe there is a better direction I'm missing. I thought of horizontal scrolling but that seems very unintuitive (and I'm not sure how well it works in terminals).
    Another option is just to truncate whole columns and leave only the first and last columns - but that feels too disruptive and will force the user to turn off concealement every time.

    In regards to styling - I honestly like the plain style. But I can see a potential to extend the themes with colors and styles for headings, seperators, etc.

    Anyways - I'm just playing around. If you would like me to continue in this direction and open a PR, let me know and I'll be happy to help.

  8. grigio commented on Nov 17, 2025

    @grigio
    grigio
    on Nov 17, 2025

    +1 probably the best way to implement it is to toggle with a shortcut the markdown/text rendering

  9. H0llyW00dzZ commented on Dec 2, 2025

    @H0llyW00dzZ
    H0llyW00dzZ
    on Dec 2, 2025

    +1

  10. remorses commented on Dec 2, 2025

    @remorses
    remorses
    on Dec 2, 2025
    Contributor

    Working on a PR in opentui anomalyco/opentui#369

  11. 66Leo66 commented on Dec 4, 2025

    @66Leo66
    66Leo66
    on Dec 4, 2025
    Image

    Seems like copilot cli can't handle overflowing tables as well. In this case, I wonder if it's technically possible to let table occupy full width(or not) and then wrap lines in cells. Like how glow does it:

    Image

  12. Regboy744 commented on Dec 18, 2025

    @Regboy744
    Regboy744
    on Dec 18, 2025

    Hi, does anyone found out how to fix this bug on the table rendering ? It is been there for a while. thanks

  13. eivamu commented on Dec 19, 2025

    @eivamu
    eivamu
    on Dec 19, 2025

    Same issue.

    Example output:

    Image

    Example of what it should look like imo:

    Image

    Environment: Multiple (both native Linux clients + Windows 11 with WSL), both when running locally and when running on a different host (ssh). OpenCode 1.0.168 with Claude.

    Would be fantastic if this was fixed.

  14. eivamu commented on Dec 19, 2025

    @eivamu
    eivamu
    on Dec 19, 2025

    Temporary workaround

    Until a fix is implemented, I have created a workaround based on my previous comment. Instruct your agents to pad table contents with something like this:

    When outputting markdown tables, always pad cell contents so that all cells in the same column have exactly the same character width.

    I've added it myself to my CLAUDE.md.

  15. 66Leo66 commented on Dec 19, 2025

    @66Leo66
    66Leo66
    on Dec 19, 2025

    Temporary workaround

    Until a fix is implemented, I have created a workaround based on my previous comment. Instruct your agents to pad table contents with something like this:

    When outputting markdown tables, always pad cell contents so that all cells in the same column have exactly the same character width.

    I've added it myself to my CLAUDE.md.

    I think there's https://github.com/franlol/opencode-md-table-formatter for that.

  16. eivamu commented on Dec 19, 2025

    @eivamu
    eivamu
    on Dec 19, 2025

    I think there's https://github.com/franlol/opencode-md-table-formatter for that.

    Fantastic, thanks! I didn't fancy the output for the separator in tables too much, so I forked it and created my own to mimic my desired output from the latest screenshot above.

    https://github.com/eivamu/opencode-md-table-formatter

  17. rekram1-node
    closed this as completedin #10900on Jan 28, 2026
  18. shuv1337
    added a commit that references this issue on Jan 30, 2026

    feat(opencode): enhanced markdown renderer with tables, themes, and s…

    94f7841
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