}

// Getwd returns the directory in which to run the next script command.
func (s *State) Getwd() string { return s.pwd }

// Logf writes output to the script's log without updating its stdout or stderr
// buffers. (The output log functions as a kind of meta-stderr.)
func (s *State) Logf(format string, args ...any) {
	fmt.Fprintf(&s.log, format, args...)
}

	b.n = 0
	return nil
}

// Available returns how many bytes are unused in the buffer.
func (b *Writer) Available() int { return len(b.buf) - b.n }

// AvailableBuffer returns an empty buffer with b.Available() capacity.
// This buffer is intended to be appended to and
// passed to an immediately succeeding [Writer.Write] call.
// The buffer is only valid until the next write operation on b.
func (b *Writer) AvailableBuffer() []byte {

	after substituting variables from the script environment.
	File1 can be 'stdout' or 'stderr' to compare the script's
	stdout or stderr buffer.

cp src... dst
	copy files to a target file or directory

	src can include 'stdout' or 'stderr' to copy from the
	script's stdout or stderr buffer.

echo string...
	display a line of text


env [key[=value]...]
	set or log the values of environment variables

			return []int{i + 1}
		}
	}
	return nil
}

// Cat writes the concatenated contents of the named file(s) to the script's
// stdout buffer.
func Cat() Cmd {
	return Command(
		CmdUsage{
			Summary: "concatenate files and print to the script's stdout buffer",
			Args:    "files...",
		},
		func(s *State, args ...string) (WaitFunc, error) {
			if len(args) == 0 {
				return nil, ErrUsage
			}

	//
	// If the command produces output or can be run in the background, run returns
	// a WaitFunc that will be called to obtain the result of the command and
	// update the engine's stdout and stderr buffers.
	//
	// Run itself and the returned WaitFunc may inspect and/or modify the State,
	// but the State's methods must not be called concurrently after Run has
	// returned.
	//

	}
	if buffered := wr.Buffered(); buffered != wantBuffered {
		t.Fatalf("Buffered = %v; want %v", buffered, wantBuffered)
	}
}

func BenchmarkReaderCopyOptimal(b *testing.B) {
	// Optimal case is where the underlying reader implements io.WriterTo
	srcBuf := bytes.NewBuffer(make([]byte, 8192))
	src := NewReader(srcBuf)
	dstBuf := new(bytes.Buffer)
	dst := onlyWriter{dstBuf}

[short] skip

# In package list mode, output is buffered.
# Check that a newline is printed after the buffer's contents.
cd fail
! go test .
! stderr .
stdout '^exitcode=1\n'
stdout '^FAIL\s+example/fail'

# In local directory mode output is streamed, so we don't know
# whether the test printed anything at all, so we print the exit code
# (just in case it failed without emitting any output at all),

	// Confirm that when Reader panics, the empty buffer remains empty
	var buf2 Buffer
	defer func() {
		recover()
		check(t, "TestReadFromPanicReader (2)", &buf2, "")
	}()
	buf2.ReadFrom(panicReader{panic: true})
}

func TestReadFromNegativeReader(t *testing.T) {
	var b Buffer
	defer func() {
		switch err := recover().(type) {
		case nil:
			t.Fatal("bytes.Buffer.ReadFrom didn't panic")
		case error:

			}
			buf.WriteByte(']')
			arg = buf.String()
		case Object:
			arg = ObjectString(a, qf)
		case Type:
			var buf bytes.Buffer
			w := newTypeWriter(&buf, qf)
			w.tpSubscripts = tpSubscripts
			w.typ(a)
			arg = buf.String()
		case []Type:
			var buf bytes.Buffer
			w := newTypeWriter(&buf, qf)
			w.tpSubscripts = tpSubscripts
			buf.WriteByte('[')
			for i, x := range a {
				if i > 0 {

}

const _CSPropBits_name = "CallSiteInLoopCallSiteOnPanicPathCallSiteInInitFunc"

var _CSPropBits_index = [...]uint8{0, 14, 33, 51}

func (i CSPropBits) String() string {
	var b bytes.Buffer

	remain := uint64(i)
	seen := false

	for k, v := range _CSPropBits_value {
		x := _CSPropBits_name[_CSPropBits_index[k]:_CSPropBits_index[k+1]]
		if v == 0 {
			if i == 0 {
				b.WriteString(x)