Static-check fixes from @lespea #1657, batch 7/n (#1709)

cmd/experiments/colors/main.go

@@ -6,12 +6,15 @@ import (
 	"github.com/johnkerl/miller/v6/pkg/colorizer"
 )
 
-const boldString = "\u001b[1m"
-const underlineString = "\u001b[4m"
-const reversedString = "\u001b[7m"
-const redString = "\u001b[1;31m"
-const blueString = "\u001b[1;34m"
-const defaultString = "\u001b[0m"
+const (
+	boldString     = "\u001b[1m"
+	reversedString = "\u001b[7m"
+	redString      = "\u001b[1;31m"
+	blueString     = "\u001b[1;34m"
+	defaultString  = "\u001b[0m"
+
+	// underlineString = "\u001b[4m"
+)
 
 func main() {
 	fmt.Printf("Hello, world!\n")

pkg/bifs/base.go

@@ -104,6 +104,8 @@ func _zero1(input1 *mlrval.Mlrval) *mlrval.Mlrval {
 }
 
 // Return one (unary)
+//
+//lint:ignore U1000 util function might be used later
 func __one1(input1 *mlrval.Mlrval) *mlrval.Mlrval {
 	return mlrval.FromInt(1)
 }

pkg/dsl/cst/dump.go

@@ -199,7 +199,7 @@ func (node *DumpStatementNode) dumpToStderr(
 	outputString string,
 	state *runtime.State,
 ) error {
-	fmt.Fprintf(os.Stderr, outputString)
+	fmt.Fprint(os.Stderr, outputString)
 	return nil
 }
 

pkg/dsl/cst/statements.go

@@ -104,7 +104,6 @@ func (root *RootNode) BuildStatementNode(
 
 	default:
 		return nil, fmt.Errorf("at CST BuildStatementNode: unhandled AST node %s", string(astNode.Type))
-		break
 	}
 	return statement, nil
 }

pkg/entrypoint/entrypoint.go

@@ -104,9 +104,7 @@ func processInPlace(
 
 	// Save off the file names from the command line.
 	fileNames := make([]string, len(originalOptions.FileNames))
-	for i, fileName := range originalOptions.FileNames {
-		fileNames[i] = fileName
-	}
+	copy(fileNames, originalOptions.FileNames)
 
 	for _, fileName := range fileNames {
 

pkg/input/record_reader_json.go

@@ -281,9 +281,7 @@ func (bsr *JSONCommentEnabledReader) Read(p []byte) (n int, err error) {
 func (bsr *JSONCommentEnabledReader) populateFromLine(p []byte) int {
 	numBytesWritten := 0
 	if len(bsr.lineBytes) < len(p) {
-		for i := 0; i < len(bsr.lineBytes); i++ {
-			p[i] = bsr.lineBytes[i]
-		}
+		copy(p, bsr.lineBytes)
 		numBytesWritten = len(bsr.lineBytes)
 		bsr.lineBytes = nil
 	} else {