// startScope starts a scope. This is used to decide whether we need
// to parenthesize an expression using > or >>.
func (ps *printState) startScope(b byte) {
	ps.scopes++
	ps.writeByte(b)
}

// endScope closes a scope.
func (ps *printState) endScope(b byte) {
	ps.scopes--
	ps.writeByte(b)
}

// precedence is used for operator precedence. This is used to avoid

		if matchErr.Match.IsLiteral() {
			// The error has a pattern has a pattern similar to the import path.
			// It may be slightly different (./foo matching example.com/foo),
			// but close enough to seem redundant.
			// Unwrap the error so we don't show the pattern.
			err = matchErr.Err
		}
	}

	// Replace (possibly wrapped) *build.NoGoError with *load.NoGoError.

// a version on the left side is dropped.
//
// The -retract=version and -dropretract=version flags add and drop a
// retraction on the given version. The version may be a single version
// like "v1.2.3" or a closed interval like "[v1.1.0,v1.1.9]". Note that
// -retract=version is a no-op if that retraction already exists.
//
// The -godebug, -dropgodebug, -require, -droprequire, -exclude, -dropexclude,

const (
	// branchBackwards marks targets that are located behind.
	// Used to express jumps to loop headers.
	branchBackwards = (1 << iota)
	// branchShort marks branches those target is close,
	// with offset is in -128..127 range.
	branchShort
	// branchLoopHead marks loop entry.
	// Used to insert padding for misaligned loops.
	branchLoopHead
)

// opBytes holds optab encoding bytes.