denial of service attacks, this setting and default was backported to Go
1.19.13, Go 1.20.8, and Go 1.21.1.

Go 1.22 made it an error for a request or response read by a net/http
client or server to have an empty Content-Length header.
This behavior is controlled by the `httplaxcontentlength` setting.

Go 1.22 changed the behavior of ServeMux to accept extended
patterns and unescape both patterns and request paths by segment.

pkg go/types, type ArgumentError struct
pkg go/types, type ArgumentError struct, Err error
pkg go/types, type ArgumentError struct, Index int
pkg go/types, type Config struct, Context *Context
pkg go/types, type Config struct, GoVersion string
pkg go/types, type Context struct
pkg go/types, type Info struct, Instances map[*ast.Ident]Instance
pkg go/types, type Instance struct
pkg go/types, type Instance struct, Type Type

pkg os, type FileInfo = fs.FileInfo
pkg os, type FileMode = fs.FileMode
pkg os, type PathError = fs.PathError
pkg os, var ErrProcessDone error
pkg os/signal, func NotifyContext(context.Context, ...os.Signal) (context.Context, context.CancelFunc)
pkg path/filepath, func WalkDir(string, fs.WalkDirFunc) error
pkg runtime/metrics, const KindBad = 0
pkg runtime/metrics, const KindBad ValueKind
pkg runtime/metrics, const KindFloat64 = 2

pkg mime/multipart, method (*Reader) NextRawPart() (*Part, error)
pkg net/http, method (Header) Values(string) []string
pkg net/http, type Transport struct, DialTLSContext func(context.Context, string, string) (net.Conn, error)
pkg net/http/httptest, type Server struct, EnableHTTP2 bool
pkg net/textproto, method (MIMEHeader) Values(string) []string
pkg strconv, method (*NumError) Unwrap() error

The [DNSError] type now wraps errors caused by timeouts or cancellation.
For example, `errors.Is(someDNSErr, context.DeadlineExceedeed)`

	[#12345](/issue/12345)             # GitHub issues
	[CL 6789](/cl/6789)                # Gerrit changelists

## For the release team

At the start of a release development cycle, the contents of `next` should be deleted
and replaced with those of `initial`. From the repo root:

    > cd doc
    > rm -r next/*
    > cp -r initial/* next

Then edit `next/1-intro.md` to refer to the next version.

pkg bytes, func CutPrefix([]uint8, []uint8) ([]uint8, bool) #42537
pkg bytes, func CutSuffix([]uint8, []uint8) ([]uint8, bool) #42537
pkg context, func Cause(Context) error #51365
pkg context, func WithCancelCause(Context) (Context, CancelCauseFunc) #51365
pkg context, type CancelCauseFunc func(error) #51365
pkg crypto/ecdh, func P256() Curve #52221
pkg crypto/ecdh, func P384() Curve #52221
pkg crypto/ecdh, func P521() Curve #52221

pkg go/doc/comment, type Code struct #51082
pkg go/doc/comment, type Code struct, Text string #51082
pkg go/doc/comment, type Doc struct #51082
pkg go/doc/comment, type Doc struct, Content []Block #51082
pkg go/doc/comment, type Doc struct, Links []*LinkDef #51082
pkg go/doc/comment, type DocLink struct #51082
pkg go/doc/comment, type DocLink struct, ImportPath string #51082

The new [NewRequestWithContext] method creates an incoming request with

pkg cmp, func Less[$0 Ordered]($0, $0) bool #59488
pkg cmp, type Ordered interface {} #59488
pkg context, func AfterFunc(Context, func()) func() bool #57928
pkg context, func WithDeadlineCause(Context, time.Time, error) (Context, CancelFunc) #56661
pkg context, func WithoutCancel(Context) Context #40221
pkg context, func WithTimeoutCause(Context, time.Duration, error) (Context, CancelFunc) #56661
pkg crypto/elliptic, func GenerateKey //deprecated #52221