[TomasVotruba]

Problem

When a rule empties a node list - most commonly removing the last implements interface from a class - php-parser's format-preserving printer gives up on that node (PrettyPrinterAbstract::pArray() has // TODO: Support removing single node) and falls back to a full reprint of the parent. That full reprint drops the blank lines between the class statements.

Example - removing the interface collapses the spacing between methods:

class SomeClass implements SomeInterface
{
    public function first()
    {
    }

    public function second()
    {
    }
}

became:

class SomeClass
{
    public function first()
    {
    }
    public function second()
    {
    }
}

This surfaced in EventSubscriberToAttributeRector (rector-symfony), which drops EventSubscriberInterface while converting to #[AsEventListener].

Fix

BetterStandardPrinter::pArray() now handles the "whole list removed" case php-parser bails on: it cuts just the emptied clause (keyword + types) from the original tokens and keeps the rest format-preserved, so the surrounding statements keep their original blank lines. Covered keywords: implements (class, enum) and interface extends.

Guards: only fires when the new list is empty and the original was not, the keyword token is actually present, and no PHP tag sits in the removed range.

Test

testKeepBlankLinesBetweenMethodsWhenImplementsRemoved parses a class, empties implements, prints format-preserving and asserts the blank line between methods survives. It fails on main and passes with this change.