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<?php $merged = [ 'a' => 'b', 'b' => 'c', 'c' => 'z', 'd' => 'a', 'e' => 'z' ]; $aliasesReduced = false; while(!$aliasesReduced) { $aliasesReduced = true; foreach($merged as $originalId => &$mergedId) { if (array_key_exists($mergedId, $merged)) { $mergedId = $merged[$mergedId]; $aliasesReduced = false; } } } print_r($aliases);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $aliases in /in/6gll2 on line 25

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