// UTF-8-encoded rune as a token. The sequence of runes returned is
// equivalent to that from a range loop over the input as a string, which
// means that erroneous UTF-8 encodings translate to U+FFFD = "\xef\xbf\xbd".
// Because of the Scan interface, this makes it impossible for the client to
// distinguish correctly encoded replacement runes from encoding errors.

// Unicode code point from the buffer.
// If no bytes are available, the error returned is io.EOF.
// If the bytes are an erroneous UTF-8 encoding, it
// consumes one byte and returns U+FFFD, 1.
func (b *Buffer) ReadRune() (r rune, size int, err error) {
	if b.empty() {
		// Buffer is empty, reset to recover space.
		b.Reset()
		return 0, 0, io.EOF
	}
	c := b.buf[b.off]
	if c < utf8.RuneSelf {

	return nil
}

// ReadRune reads a single UTF-8 encoded Unicode character and returns the
// rune and its size in bytes. If the encoded rune is invalid, it consumes one byte
// and returns unicode.ReplacementChar (U+FFFD) with a size of 1.
func (b *Reader) ReadRune() (r rune, size int, err error) {
	for b.r+utf8.UTFMax > b.w && !utf8.FullRune(b.buf[b.r:b.w]) && b.err == nil && b.w-b.r < len(b.buf) {

    <_comment>Red raw image</_comment>
    <glob pattern="*.r3d"/>
  </mime-type>

  <mime-type type="image/x-raw-imacon">
    <_comment>Imacon raw image</_comment>
    <glob pattern="*.fff"/>
  </mime-type>

  <mime-type type="image/x-raw-logitech">
    <_comment>Logitech raw image</_comment>
    <glob pattern="*.pxn"/>
  </mime-type>

  <mime-type type="image/x-raw-casio">

	POPW AX
	PUSHQ (BX)                              // ff33
	POPQ AX
	PUSHQ (R11)                             // 41ff33
	POPQ AX
	PUSHQ DX                                // fff2 or 52
	POPQ AX
	PUSHQ R11                               // 41fff3 or 4153
	POPQ AX
	PUSHFW                                  // 669c
	POPFW
	PUSHFQ                                  // 9c
	POPFQ

L, M, N, P, and S general categories (the Graphic characters without
spaces) and may also exclude the characters
<code>!"#$%&amp;'()*,:;&lt;=&gt;?[\]^`{|}</code>
and the Unicode replacement character U+FFFD.
</p>

<p>
Consider a compiled a package containing the package clause
<code>package math</code>, which exports function <code>Sin</code>, and
installed the compiled package in the file identified by