semver accepts `@dev@dev`, composer does not

[cweiske]

I can enter @dev in the version and then select dev as stability, and all versions including dev-main are selected.

The generated code is:

composer require madewithlove/htaccess-cli:"@dev@dev"

composer does not like that and says:

Could not parse version constraint @dev: Invalid version string "@dev"

Test URL: https://semver.madewithlove.com/?package=madewithlove%2Fhtaccess-cli&constraint=%40dev&stability=dev