{* ../../docs_src/websockets_/tutorial003_py310.py hl[79:81] *}

To try it out:

* Open the app with several browser tabs.
* Write messages from them.
* Then close one of the tabs.

That will raise the `WebSocketDisconnect` exception, and all the other clients will receive a message like:

```
Client #1596980209979 left the chat
```

/// tip

works(foo="bar")  # This works 🎉
```

...and that's it.

////

//// tab | Info

Code in code blocks should not be modified, with the exception of comments.

See section `### Content of code blocks` in the general prompt in `scripts/translate.py`.

////

## Tabs and colored boxes { #tabs-and-colored-boxes }

//// tab | Test

/// info
Some text
///

/// note
Some text
///

        assertTrue(result.contains("content"));
        assertTrue(result.contains("newlines"));
        assertTrue(result.contains("tabs"));
        // JSON should be properly escaped
        assertTrue(result.contains("Test"));
    }

    @Test
    public void test_toSlackMessage_withWhitespaceContent() {
        MockSMailPostingDiscloser discloser = new MockSMailPostingDiscloser();

---

## Code Conventions

### Java Style

- **Formatter**: Eclipse formatter at `src/config/eclipse/formatter/java.xml`
- **Indentation**: 4 spaces (no tabs)
- **Line Length**: 140 characters max
- **License Headers**: Required (use `mvn license:format`)

### Naming & Style

mvn test                       # Run tests
mvn formatter:format           # Format code
mvn license:format             # Update license headers
```

### Code Style

- 4 spaces (no tabs), opening brace on same line, max line length 120
- JavaDoc required for public APIs
- License headers required (Apache 2.0)

### Testing

- **Structure**: `src/test/java/org/codelibs/fess/crawler/`

    * You can normally quickly detect it by going to the "Files changed" tab in the PR and checking if the updated file(s) starts with `docs/en/docs`. The original version of the docs is always in English, so in `docs/en/docs`.
* `lang-all`: Translations

    "UP",  # pyupgrade
]
ignore = [
    "E501",  # line too long, handled by black
    "B008",  # do not perform function calls in argument defaults
    "C901",  # too complex
    "W191",  # indentation contains tabs
]

[tool.ruff.lint.per-file-ignores]
"__init__.py" = ["F401"]
"docs_src/custom_request_and_route/tutorial002_an_py310.py" = ["B904"]
"docs_src/custom_request_and_route/tutorial002_an_py39.py" = ["B904"]

        input = "line1\nline2";
        result = KuromojiCSVUtil.quoteEscape(input);
        assertEquals("line1\nline2", result);

        // Tabs
        input = "tab\tcharacter";
        result = KuromojiCSVUtil.quoteEscape(input);
        assertEquals("tab\tcharacter", result);

        // Unicode
        input = "日本語,テスト";
        result = KuromojiCSVUtil.quoteEscape(input);

```Python
wont_work()  # これは動作しません 😱
works(foo="bar")  # これは動作します 🎉
```

...以上です。

////

//// tab | 情報

コードブロック内のコードは、コメントを除き、変更してはいけません。

`scripts/translate.py` の general プロンプト内「### Content of code blocks」の節を参照してください。

////

## タブと色付きボックス { #tabs-and-colored-boxes }

//// tab | テスト

/// info | 情報
いくつかのテキスト
///

/// note | 備考
いくつかのテキスト
///

/// note | 技術詳細

{* ../../docs_src/websockets_/tutorial003_py310.py hl[79:81] *}

Zum Ausprobieren:

* Öffnen Sie die Anwendung mit mehreren Browser-Tabs.
* Schreiben Sie Nachrichten in den Tabs.
* Schließen Sie dann einen der Tabs.

Das wird die Ausnahme `WebSocketDisconnect` auslösen und alle anderen Clients erhalten eine Nachricht wie:

```
Client #1596980209979 left the chat
```