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            gasで、使えるかは調べてないですが、前後の余計な改行はtrim()でとれます。
         
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            [https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Global_Objects/String/trim](https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Global_Objects/String/trim)
         
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            [https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Global_Objects/String/trim](https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Global_Objects/String/trim)
         
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            gasで使えるなら↓こう書きます(多分使えると思います)。
         
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            ```javascript
         
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            doc.getBody().getText().trim();
         
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            ```
         
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