Internationalization and Localization Support for CLI Interface
Status Fixed / completed
Maintainer reply ✓ Yes — catherinewu
Activity 5 comments · opened Jul 31, 2025 · closed Jul 31, 2025
💡 Likely answer: A maintainer (catherinewu, contributor)
responded on this thread — see the highlighted reply below.
Summary
Add internationalization (i18n) and localization (l10n) support for Claude Code CLI interface messages, command outputs, and help text.
Current Behavior
- All CLI interface messages are in English only
- Command outputs, error messages, and help text are hardcoded in English
- No configuration option to change display language
Requested Behavior
- Support for multiple languages in CLI interface
- Configurable language setting (e.g., via
claude config set language ja) - Localized messages for:
- Command outputs and success/error messages
- Help text and documentation
- Agent creation messages
- Progress indicators and status updates
Use Case
Many non-English speaking developers would benefit from having Claude Code interface in their native language, especially for:
- Better understanding of error messages
- Improved onboarding experience
- Enhanced productivity in local development environments
Proposed Implementation
- Add language configuration option
- Implement message localization system
- Support popular languages (Japanese, Spanish, French, German, etc.)
- Maintain English as default fallback
Related Issues
This would complement existing internationalization efforts:
- #1547 (Japanese IME input performance issues)
- #2620 (Korean IME composition failure)
- #1553 (IME input rendering lag for non-Latin scripts)
- #1306 (Japanese input UX improvements)
- #678 (Japanese text pasting issues)
- #2780 (Chinese text display corruption)
Together with the existing input-related issues, comprehensive internationalization support would greatly benefit the global developer community using Claude Code.
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Please let me know if a similar issue already exists - I searched through existing issues but may have missed something.
5 Comments
Found 1 possible duplicate issue:
If your issue is a duplicate, please close it and 👍 the existing issue instead.
🤖 Generated with Claude Code
put "use japanese when respond" in your memory file.
thanks comment！
Sorry if this is a misunderstanding,
But when I mentioned localization, I was referring to things like the options Claude shows, such as:
Yes
Yes......
No...
as well as the language used when setting up sub-agents.
Does the language setting in Memory also affect those parts?
for example
<img width="532" height="224" alt="Image" src="https://github.com/user-attachments/assets/dded0cb7-13dd-4eaa-9755-a62eaa65f463" />
duplicate with 2415, closing
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