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minor#20364 [EventDispatcher] Fix XSS in example event dispatcher (nicolas-grekas)

This PR was merged into the 5.4 branch.Discussion----------[EventDispatcher] Fix XSS in example event dispatcherThe exception message can contain unfiltered user input.Commits-------2ff16f8 Fix XSS in example event dispatcher

2 parents44df5e8 +2ff16f8 commit0037654Copy full SHA for 0037654

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Original file line number	Diff line number	Diff line change
`@@ -41,6 +41,7 @@ The most common way to listen to an event is to register an event listener::`
`41`	`41`	`// Customize your response object to display the exception details`
`42`	`42`	`$response = new Response();`
`43`	`43`	`$response->setContent($message);`
	`44`	`+ $response->headers->set('Content-Type', 'text/plain; charset=utf-8');`
`44`	`45`
`45`	`46`	`// HttpExceptionInterface is a special type of exception that`
`46`	`47`	`// holds status code and header details`

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Commit0037654

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`‎event_dispatcher.rst‎`

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