Method WriteRune

internal/buffer/buffer.go:171–180

WriteRune emits a single rune.

(s rune)

// WriteRune emits a single rune.
func (b *Buffer) WriteRune(s rune) error {
	b.startWrite()
	l := utf8.RuneLen(s)
	m, ok := b.tryGrowByReslice(l)
	if !ok {
		m = b.grow(l)
	}
	_ = utf8.EncodeRune(b.buf[m:], s)
	return nil
}

// finalize ensures that all the buffer is properly
// marked.