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v3.2: Move a paragraph, unchanged, to make more sense in multipart encoding #4812

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4 changes: 2 additions & 2 deletions src/oas.md
Original file line number Diff line number Diff line change
Expand Up @@ -1792,14 +1792,14 @@ Implementations MAY choose to offer media type sniffing ([[SNIFF]]) as an altern

###### `Content-Transfer-Encoding` and `contentEncoding`

Note also that `Content-Transfer-Encoding` is deprecated for `multipart/form-data` ([RFC7578](https://www.rfc-editor.org/rfc/rfc7578.html#section-4.7)) where binary data is supported, as it is in HTTP.

Using `contentEncoding` for a multipart field is equivalent to specifying an [Encoding Object](#encoding-object) with a `headers` field containing `Content-Transfer-Encoding` with a schema that requires the value used in `contentEncoding`.
If `contentEncoding` is used for a multipart field that has an Encoding Object with a `headers` field containing `Content-Transfer-Encoding` with a schema that disallows the value from `contentEncoding`, the result is undefined for serialization and parsing.

Note that as stated in [Working with Binary Data](#working-with-binary-data), if the Encoding Object's `contentType`, whether set explicitly or implicitly through its default value rules, disagrees with the `contentMediaType` in a Schema Object, the `contentMediaType` SHALL be ignored.
Because of this, and because the Encoding Object's `contentType` defaulting rules do not take the Schema Object's`contentMediaType` into account, the use of `contentMediaType` with an Encoding Object is NOT RECOMMENDED.

Note also that `Content-Transfer-Encoding` is deprecated for `multipart/form-data` ([RFC7578](https://www.rfc-editor.org/rfc/rfc7578.html#section-4.7)) where binary data is supported, as it is in HTTP.

See [Appendix E](#appendix-e-percent-encoding-and-form-media-types) for a detailed examination of percent-encoding concerns for form media types.

###### Example: Basic Multipart Form
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