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package refname
import (
"strings"
)
func overwriteLastByte(builder *strings.Builder, ch byte) {
overwriteBuilderAt(builder, builder.Len()-1, ch)
}
func overwriteBuilderAt(builder *strings.Builder, index int, ch byte) {
value := builder.String()
truncateBuilder(builder, index)
builder.WriteByte(ch)
builder.WriteString(value[index+1:])
}
func truncateBuilder(builder *strings.Builder, n int) {
value := builder.String()
builder.Reset()
builder.WriteString(value[:n])
}
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