[ac1982]

Assertion::nullOrString(value: $value) throws “Missing the first argument” on PHP 8 because the magic dispatcher only checks argument index 0. The same problem affects the all… variants.

Resolve the first parameter name from the underlying assertion (including subclass overrides), move that argument into the existing value slot, and preserve the remaining named arguments for PHP to bind. This supports reordered arguments and assertions whose first parameter is named countable, while retaining native duplicate/unknown argument errors.

Fixes #343.

Regression tests cover both delegates, null and iterable values, reordered/mixed arguments, subclass parameter names, and failure details. On the original implementation, 11 of the initial 14 regression cases error. With the change, PHPUnit passes 544 tests / 944 assertions with 3 skips for the unavailable intl extension (PHP 8.5.4, PHPUnit 9.6.38).

composer assert:cs-lint cannot run with the currently resolved fixer 3 because the existing .php_cs configuration is obsolete. Running fixer 2.19.3 against the changed files reports the same preexisting formatting changes as the clean base. Other PHP versions were not run locally; the new tests skip named-argument calls on PHP 7.