smooth-app
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As a user, I should be able to specify if a field is not printed on the packaging
On the website we use the hyphen (-) to tell that the value is not on the product. For example, it is really useful to tell that there is no fiber value printed on the packaging: in some case that does not mean there is no fiber, but only that the producer didn't print it. See https://github.com/openfoodfacts/openfoodfacts-server/issues/1938
Originally posted by @CharlesNepote in https://github.com/openfoodfacts/smooth-app/issues/2138#issuecomment-1149180607