Formatting a few years ago was better than with current Swagger

We're migrating our code generators off a fork of Swagger from a few years ago onto the latest Swagger.

Overall things have gone surprisingly well, but the formatting in the generated output has changed.

For example, this:

- Package version: 1.0.0
- Build package: com.foo.bar

now looks like this:

- Package version: 1.0.0- Build package: com.foo.bar

and this:

    "version": "1.0.0",
    "description": "",

now looks like this:

"version": "1.0.0",
"description": "",

and this:

 * Foo API
 *
 * APIs for foo stream
 *
 * OpenAPI spec version: v3.1.0

now looks like this:

* Foo API*
* APIs for foo stream*
* OpenAPI spec version: v3.1.0

and this:

            $responseBody = $response->getBody();

now looks like this:

$responseBody = $response->getBody();

and this:

        $report .= '    OpenAPI Spec Version: v3.1.0' . PHP_EOL;
        $report .= '    SDK Package Version: 1.0.0' . PHP_EOL;
        $report .= '    Temp Folder Path: ' . self::getDefaultConfiguration()->getTempFolderPath() . PHP_EOL;

now looks like this:

        $report .= '    OpenAPI Spec Version: v3.1.0' . PHP_EOL;        $report .= '    SDK Package Version: 1.0.0' . PHP_EOL;        $report .= '    Temp Folder Path: ' . self::getDefaultConfiguration()->getTempFolderPath() . PHP_EOL;

and this:

    {
        $this->container['app'] = isset($data['app']) ? $data['app'] : null;
        $this->container['description'] = isset($data['description']) ? $data['description'] : null;
        $this->container['template'] = isset($data['template']) ? $data['template'] : null;
        $this->container['placeholders'] = isset($data['placeholders']) ? $data['placeholders'] : null;
        $this->container['is_enabled'] = isset($data['is_enabled']) ? $data['is_enabled'] : true;
    }

now looks like this:

    {        $this->container['app'] = isset($data['app']) ? $data['app'] : null;        $this->container['description'] = isset($data['description']) ? $data['description'] : null;        $this->container['template'] = isset($data['template']) ? $data['template'] : null;        $this->container['placeholders'] = isset($data['placeholders']) ? $data['placeholders'] : null;        $this->container['is_enabled'] = isset($data['is_enabled']) ? $data['is_enabled'] : true;    }

and this:

    public function listInvalidProperties()
    {
        $invalidProperties = [];
        if ($this->container['app'] === null) {
            $invalidProperties[] = "'app' can't be null";
        }
        if ($this->container['description'] === null) {
            $invalidProperties[] = "'description' can't be null";
        }
        if ($this->container['template'] === null) {
            $invalidProperties[] = "'template' can't be null";
        }
        if ($this->container['placeholders'] === null) {
            $invalidProperties[] = "'placeholders' can't be null";
        }
        return $invalidProperties;
    }

now looks like this:

    public function listInvalidProperties()
    {        $invalidProperties = [];        if ($this->container['app'] === null) {
            $invalidProperties[] = "'app' can't be null";
        }        if ($this->container['description'] === null) {
            $invalidProperties[] = "'description' can't be null";
        }        if ($this->container['template'] === null) {
            $invalidProperties[] = "'template' can't be null";
        }        if ($this->container['placeholders'] === null) {
            $invalidProperties[] = "'placeholders' can't be null";
        }        return $invalidProperties;
    }

and this:

    protected static $attributeMap = [
        'app' => 'app',
        'description' => 'description',
        'template' => 'template',
        'placeholders' => 'placeholders',
        'is_enabled' => 'isEnabled'
    ];

now looks like this:

    protected static $attributeMap = [
        'app' => 'app',
'description' => 'description',
'template' => 'template',
'placeholders' => 'placeholders',
'is_enabled' => 'isEnabled'    ];

and so forth.

We don't do any formatting or postprocessing. These formatting changes are definitely coming from the off-the-shelf Swagger jars.

Is there some linefeed setting that was added to Swagger after we forked that we need to set somewhere in the properties/configuration?

The formatting changes only in some places. There are many places where the formatting is exactly what we'd expect, but sprinkled with bad formatting in seemingly random places (but repeatably the same places--it's the same every time we run the code generator). There doesn't seem to be a pattern.

Most puzzling, it also is appending the numeral "2". For example, this:

* @return \Swagger\Client\Foo\Model\Reference|null

turns into this:

@return \Swagger\Client\Foo\Model\Reference2|null

and this:

     protected static $swaggerTypes = [
        'bar' => '\Swagger\Client\Bar\Model\Plane',
        'baz' => '\Swagger\Client\Baz\Model\Train'
    ];

turns into this:

        'bar' => '\Swagger\Client\Bar\Model\Plane2',
'baz' => '\Swagger\Client\Baz\Model\Train2'    ];

We have nothing in our templates with the "2"s. It's definitely coming from Swagger.

We have more than 900,000 lines of diffs between our old and new code, which makes it basically impossible to determine if we have introduced any semantic changes!