Description:
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`tidy_repair_string' would add unexpected `id' attribute to "<a>" tag if it has a `name' attribute .
the new added `id' has the same value as `name' .

Reproduce code:
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$s = "<a name=\"n\"></a>";
$t = tidy_repair_string($s);
preg_match('/<a.*?>/', $t, $a);
echo $a[0];


Expected result:
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<a name="n">

Actual result:
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<a name="n" id="n">