mime: builtinTypes ".xml" defaults to "text/xml" instead of "application/xml"

[AidanWelch]

Go version

go version go1.23.0 windows/amd64

Output of go env in your module/workspace:

DNA

What did you do?

DNA

What did you see happen?

mime/type.go uses ".xml": "text/xml; charset=utf-8", for builtinTypes

What did you expect to see?

RFC 7303, Section 4.1 states:

this specification alters the
handling of character encoding of text/xml and text/xml-external-
parsed-entity, treating them no differently from the respective
application/ types. However, application/xml and application/xml-
external-parsed-entity are still RECOMMENDED, to avoid possible
confusion based on the earlier distinction.

So, following the recommendatio, in mime/type.go builtinTypesLower should say:

	".xml":  "application/xml; charset=utf-8", 

[gabyhelp]

Related Issues and Documentation

• mime: use "charset=UTF-8" instead of "charset=utf-8" #19430 (closed)

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[cagedmantis]

cc @neild