This PR was squashed before being merged into the 5.1-dev branch (closes #32388). Discussion ---------- [Form] Allow to translate each language into its language in LanguageType | Q | A | ------------- | --- | Branch? | 4.4 | Bug fix? | no | New feature? | yes | BC breaks? | no  | Deprecations? | no  | Tests pass? | yes  | Fixed tickets | #31562 | License | MIT | Doc PR | I'll do it if this is approved This would allow to set this option: ```php ->add('language', LanguageType::class, [ 'choice_self_translation' => true, ]) ``` To display each language translated into its own language: ![image](https://user-images.githubusercontent.com/73419/60709908-cdf29b80-9f11-11e9-83c8-8ee939c0de3a.png) @ro0NL if this proposal is approved, could you please tell me why I must `try ... catch` with `\Exception`? * First, I need the try..catch because of a special language with the code "root" which triggers exceptions (*The resource bundle "symfony-code/src/Symfony/Component/Intl/Resources/data/languages/root.json" does not exist*) * Second, I must catch \Exception because when I try to catch the exact exception (`Symfony\Component\Intl\Exception\ResourceBundleNotFoundException`) the exception is not caught. Why? Commits ------- 138200c [Form] Allow to translate each language into its language in LanguageType

Uh oh!