[Console] --verbose option does not allow values

[TobiasXy]

On this page we can see an example command like this:

php application.php list --verbose=2

But as a matter of fact, it is not possible to provide a value to the --verbose option.

If you try it, the result is this exception:

[Symfony\Component\Console\Exception\RuntimeException]
The "--verbose" option does not accept a value.

To reproduce it you can run a simple command like this:
php bin/console router:match / --verbose=2

I guess this could be fixed in the InputDefinition (Symfony\Component\Console\Application::getDefaultInputDefinition method), by replacing InputOption::VALUE_NONE with InputOption::VALUE_OPTIONAL for the verbose option?

[stof]

this is actually a bug in the doc (--verbose is treated in a special way).

We cannot change the config of the option as you suggest, as it breaks BC badly (using bin/console router:match -v / would then pass / as the --verbose value rather than as an argument). We tried that in the past already.

Please open an issue on the doc repo to ask them to fix the doc.