shithub: kwa

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ref: 8f2d3879a9c66d2633ca7ec1c3b0495981feb04f
dir: /test/t.sub0/


{sub(/[aeiou]/, "foo"); print}
{sub("[aeiou]", "foo"); print}

{gsub(/[aeiou]/, "foo"); print}
{gsub("[aeiou]", "foo"); print}

{sub(/[aeiou]/, "&foo"); print}
{sub("[aeiou]", "&foo"); print}

{gsub(/[aeiou]/, "&foo"); print}
{gsub("[aeiou]", "&foo"); print}

{sub(/[aeiou]/, "\&foo"); print}
{sub("[aeiou]", "\&foo"); print}

{gsub(/[aeiou]/, "\&foo"); print}
{gsub("[aeiou]", "\&foo"); print}