[DOCS] Language setting docs omit terminal tab session title localization

Documentation Type

Incorrect/outdated documentation

Documentation Location

https://code.claude.com/docs/en/settings

Section/Topic

language setting behavior for auto-generated terminal tab/session titles

Current Documentation

The settings reference currently says:

language | Configure Claude's preferred response language (e.g., "japanese", "spanish", "french"). Claude will respond in this language by default. Also sets the voice dictation language

The environment variables reference currently says:

CLAUDE_CODE_DISABLE_TERMINAL_TITLE | Set to 1 to disable automatic terminal title updates based on conversation context

The CLI reference also says:

--name, -n | Set a display name for the session, shown in /resume and the terminal title.

None of these pages mention that auto-generated terminal tab session titles now follow the configured language setting.

What's Wrong or Missing?

Changelog v2.1.121 introduced a user-visible behavior change:

The terminal tab session title is now generated in your configured language setting

Current documentation describes the language setting as affecting Claude's response language and voice dictation, and it separately describes automatic terminal titles, but it does not explain that those generated titles are also localized by the language setting.

That leaves the docs outdated for users who rely on non-English Claude Code setups or who are trying to understand why terminal tab titles are now generated in a different language.

Suggested Improvement

Update the language setting entry to mention that it also controls the language used for auto-generated session titles such as the terminal tab title.

Also add a short cross-reference anywhere terminal title behavior is described, for example:

Automatic terminal titles are generated from conversation context and use your configured language setting when one is set.

This would make it clear that title generation is localized behavior, not just response-text behavior.

Impact

Medium - Makes feature difficult to understand

Additional Context

Affected Pages:

| Page | Context |
|------|---------|
| https://code.claude.com/docs/en/settings | Documents the language setting but only mentions response language and voice dictation |
| https://code.claude.com/docs/en/env-vars | Documents automatic terminal title updates but not that generated titles respect the configured language setting |
| https://code.claude.com/docs/en/cli-reference | Documents terminal title visibility for named sessions, but not localization behavior for generated titles |

Total scope: 3 pages affected

Source: Changelog v2.1.121

Exact changelog entry:

The terminal tab session title is now generated in your configured language setting