if e.err != nil {
		return 0, e.err
	}
	return len(b), nil
}

// Chooses the filter to use for encoding the current row, and applies it.
// The return value is the index of the filter and also of the row in cr that has had it applied.
func filter(cr *[nFilter][]byte, pr []byte, bpp int) int {
	// We try all five filter types, and pick the one that minimizes the sum of absolute differences.

		theHuffmanLUT[i].init(s)
	}
}

// writer is a buffered writer.
type writer interface {
	Flush() error
	io.Writer
	io.ByteWriter
}

// encoder encodes an image to the JPEG format.
type encoder struct {
	// w is the writer to write to. err is the first error encountered during
	// writing. All attempted writes after the first error become no-ops.
	w   writer
	err error
	// buf is a scratch buffer.

package textproto

import (
	"bufio"
	"fmt"
	"io"
)

// A Writer implements convenience methods for writing
// requests or responses to a text protocol network connection.
type Writer struct {
	W   *bufio.Writer
	dot *dotWriter
}

// NewWriter returns a new [Writer] writing to w.
func NewWriter(w *bufio.Writer) *Writer {
	return &Writer{W: w}
}

var crnl = []byte{'\r', '\n'}

// Elem returns the element type for the given pointer p.
func (p *Pointer) Elem() Type { return p.base }

func (p *Pointer) Underlying() Type { return p }

	commentNewline bool              // true if the comment group contains newlines
}

type printer struct {
	// Configuration (does not change after initialization)
	Config
	fset *token.FileSet

	// Current state
	output       []byte       // raw printer result
	indent       int          // current indentation

	"path"
	"slices"
	"strings"
	"time"
)

// Writer provides sequential writing of a tar archive.
// [Writer.WriteHeader] begins a new file with the provided [Header],
// and then Writer can be treated as an io.Writer to supply that file's data.
type Writer struct {
	w    io.Writer
	pad  int64      // Amount of padding to write after current file entry
	curr fileWriter // Writer for current file entry

import "io"

const lineMaxLen = 76

// A Writer is a quoted-printable writer that implements [io.WriteCloser].
type Writer struct {
	// Binary mode treats the writer's input as pure binary and processes end of
	// line bytes as binary data.
	Binary bool

	w    io.Writer
	i    int
	line [78]byte
	cr   bool
}

// NewWriter returns a new [Writer] that writes to w.
func NewWriter(w io.Writer) *Writer {

// NewWriter creates a new byte format writer.
func NewWriter(w io.Writer, v version.Version) (*Writer, error) {
	_, err := version.WriteHeader(w, v)
	return &Writer{w: w, v: v, specs: v.Specs()}, err
}

// WriteEvent writes a single event to the trace wire format stream.
func (w *Writer) WriteEvent(e Event) error {
	// Check version.
	if e.Version != w.v {

	return func(h *dependency) {
		// Translate to a key lookup
		h.filter.keys = smallset.New(keyFunc(name.Name, name.Namespace))
	}
}

func FilterKey(k string) FetchOption {
	return func(h *dependency) {
		h.filter.keys = smallset.New(k)
	}
}

func FilterKeys(k ...string) FetchOption {
	return func(h *dependency) {
		h.filter.keys = smallset.New(k...)
	}
}

// See the License for the specific language governing permissions and
// limitations under the License.

package ptr

import (
	"fmt"
)

// Of returns a pointer to the input. In most cases, callers should just do &t. However, in some cases
// Go cannot take a pointer. For example, `ptr.Of(f())`.
func Of[T any](t T) *T {
	return &t
}

// OrEmpty returns *t if its non-nil, or else an empty T
func OrEmpty[T any](t *T) T {