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<?php $str = '\xE2\x80\x99'; var_dump(\preg_replace_callback('#\\\\(?:\\\\|x([0-9a-f]{2}))#i', function($m) { return isset($m[1]) ? \chr(\hexdec($m[1])) : '\\'; }, $str));
Output for git.master, git.master_jit, rfc.property-hooks
string(3) "’"

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