Symfony version(s) affected

6.4

Description

https://github.com/symfony/symfony/blob/8.1/src/Symfony/Component/DependencyInjection/ParameterBag/EnvPlaceholderParameterBag.php states that environment variables name can contain:

letters, digits, hyphens, backslashes and colons

NB: Support for dots have also been added recently (94182c8).

Turns out, hyphens are not supported. Since 6.4 at least.

How to reproduce

Checkout to branch 6.4 and add the following test in src/Symfony/Component/DependencyInjection/Tests/ParameterBag/EnvPlaceholderParameterBagTest.php:

public function testHyphensAllowed()
{
    $bag = new EnvPlaceholderParameterBag();
    $this->expectException(InvalidArgumentException::class);
    $bag->get('env(foo-bar)');
}

Possible Solution

Now, the question is: do we aim to fix this behavior (and actually support it), or fix the error message?

Additional Context

No response