shithub: trueawk

ref: 1c424b1b4d5931f2a4b87b6f0f75827bc53ff9d7
dir: /testdir/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}