Persian/Arabic (RTL) text is not displayed correctly in opencode TUI #32984

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1. github-actions

   assigned

   kommander

   on Jun 19, 2026
2. github-actions

   added

   needs:complianceThis means the issue will auto-close after 2 hours.This means the issue will auto-close after 2 hours.

   and removed

   needs:complianceThis means the issue will auto-close after 2 hours.This means the issue will auto-close after 2 hours.

   on Jun 19, 2026
3. github-actions commented on Jun 19, 2026

   

   github-actionsBot

   on Jun 19, 2026 – with GitHub Actions

   Contributor

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   Thanks for updating the issue! It now includes all the required information — version, OS, terminal, clear reproduction steps, and a concise description. The report looks good.
4. nkhayatei commented on Jun 24, 2026

   

   nkhayatei

   on Jun 24, 2026

   Last edited by nkhayatei

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   i have same problem with type Farsi or Arabic

   
5. razavioo commented on Jul 29, 2026

   

   razavioo

   on Jul 29, 2026

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   Community plugin available: opencode-rtl

   For those looking for RTL support, we've built an OpenCode plugin that automatically applies Unicode bidi isolation (RLI/LRI/PDI) to the AI's responses and system prompts.

   npm install opencode-rtl

   // opencode.json
   {
     "plugin": [
       ["opencode-rtl", { "language": "auto" }]
     ]
   }

   What it fixes today:

   • Injects RTL system prompts so the AI responds in your language
   • Protects inline code (console.log()) and markdown blocks from getting scrambled by wrapping them in LTR isolates
   • Works out-of-the-box for Arabic, Persian, Hebrew, Urdu, etc.
   • Fixes character ordering and mixed-direction (BiDi) text issues in the TUI/CLI

   Current limitations:

   • Right-alignment: The plugin fixes the ordering of words and code (which fixes a lot of the unreadable output), but the text is still left-aligned. Full right-alignment requires native support in the TUI renderer.
   • Streaming: It formats the text after the response completes. (We are proposing a streaming hook to fix this).

   Repo: https://github.com/razavioo/opencode-rtl
6. razavioo commented on Sep 27, 2026

   

   razavioo

   on Sep 27, 2026

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   This can be addressed today using the opencode-rtl plugin. It isolates Persian/Arabic text with Unicode bidi characters so terminals render them correctly.

   For OpenCode 2:

   {
     "plugins": [{ "package": "opencode-rtl", "options": { "language": "fa" } }]
   }

   For OpenCode 1:

   {
     "plugin": [["opencode-rtl", { "language": "fa" }]]
   }

   It also injects system guidance so the model structures its RTL responses properly (code blocks stay LTR, prose is isolated with bidi markers).
7. neriousy commented on Oct 1, 2026

   

   neriousy

   on Oct 1, 2026

   Member

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   Closing as a duplicate of #16875, which tracks Persian/Arabic (RTL) text rendering in the TUI. Please add your terminal details there.

   In the meantime, the community opencode-rtl plugin mentioned there may help.
8. neriousy

   closed this as a duplicateof RTL language support (Persian/Arabic) - characters appear reversed and disconnected #16875 on Oct 1, 2026