Hebrew/Arabic (RTL) text renders left-to-right in messages and the composer #32726

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1. github-actions

   assigned

   Hona

   on Jun 17, 2026
2. github-actions commented on Jun 17, 2026

   

   github-actionsBot

   on Jun 17, 2026 – with GitHub Actions

   Contributor

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

   • [FEATURE]: Add RTL support in UI to Hebrew & Arabic #14257: [FEATURE]: Add RTL support in UI to Hebrew & Arabic (open)
   • RTL language support (Persian/Arabic) - characters appear reversed and disconnected #16875: RTL language support (Persian/Arabic) - characters appear reversed and disconnected (open)
   • RTL/Arabic text render bug #32602: RTL/Arabic text render bug (closed)
   • feat(i18n): Add RTL (Right-to-Left) support for Arabic and other RTL languages #10908: feat(i18n): Add RTL (Right-to-Left) support for Arabic and other RTL languages (closed)

   If your issue is distinct or you have a ready fix, please reference these issues in your PR to provide context.
3. razavioo commented on Jun 21, 2026

   

   razavioo

   on Jun 21, 2026

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   https://github.com/razavioo/opencode-rtl

   I have created an opencode RTL plugin that solves the most part. feel free to check it out and maybe do some contribution.
4. Musa85 commented on Jul 4, 2026

   

   Musa85

   on Jul 4, 2026

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   Detailed root-cause analysis and a fully tested fix recipe (CSS/JS, with before/after screenshots on Desktop 1.17.13) is available in #35319 — covers word ordering, alignment, and table column direction for Arabic/RTL.
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

   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 renderer (like CSS dir="rtl" as discussed in this issue, or native alignment in the CLI TUI).
   • 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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   While native RTL rendering in OpenCode's TUI is the long-term fix, there is a community plugin that addresses this right now: opencode-rtl.

   It wraps RTL text in Unicode bidi isolation characters (RLI/PDI) so Hebrew and Arabic render correctly in terminals that support Unicode bidi. It also injects system guidance so the model responds with proper RTL formatting.

   For OpenCode 2.x (v1.0.0, being published):

   // opencode.jsonc
   {
     "plugins": [
       {
         "package": "opencode-rtl",
         "options": {
           "language": "auto",
           "isolateUserMessages": "auto",
           "isolateAssistantText": "auto"
         }
       }
     ]
   }

   For OpenCode 1.x ([email protected]):

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

   It supports 10 RTL languages (Arabic, Hebrew, Persian, Urdu, etc.), per-column table direction detection, and stream-level assistant text isolation.
7. neriousy commented on Oct 1, 2026

   

   neriousy

   on Oct 1, 2026

   Member

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   Closing as a duplicate of #26915, which tracks RTL (Hebrew, Arabic, Persian) support in the desktop chat. Please add your details and 👍 there.
8. neriousy

   closed this as a duplicateof [FEATURE]: Add RTL (Right-to-Left) language support in the chat panel #26915 on Oct 1, 2026