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jqでハイフン(-)を含むkeyでフィルタできないときの対処法

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詳しくは
Github: Cannot select field if field name has dashes #38

test.json
{
  "foo-bar": "valueA",
  "hoge-fuga": "valueB"
}

失敗例

$ cat test.json | jq '.foo-bar'

error: bar is not defined
.foo-bar     1 compile error

修正

$ cat test.json | jq '.["foo-bar"]'

"valueA"

ハイフンを別の用途で使ってるから、エスケープしないといけない、って感じ?
jq Manual

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