Added color names magenta, cyan, and yellow

expander-context.go

@@ -10,8 +10,6 @@ import (
 	"git.portale-stac.it/go-pkg/golang"
 )
 
-const varIntro = '$'
-
 type ExpanderFunc func(ctx ExpanderContext, varValue string, args []string) (result string, err error)
 
 type ExpanderFuncBlock struct {

scanner.go

@@ -17,11 +17,18 @@ const (
 // Flags symbols in the abova iota order
 const flagSymbols = "!=*"
 
+const defaultVarIntro = '$'
+
+
 type VariableHandler interface {
 	Handle(varSpec string, flags ScannerFlag) (value string, err error)
 }
 
 func Scan(handler VariableHandler, source string) (result string, err error) {
+	return ScanExt(defaultVarIntro, handler, source)
+}
+
+func ScanExt(varIntro byte,  handler VariableHandler, source string) (result string, err error) {
 	var spec, value string
 	var flags ScannerFlag
 	var backSlash bool

tty.go

@@ -26,12 +26,18 @@ func translateColor(name string) (c int) {
 		c = 30
 	case strings.HasPrefix("blue", norm):
 		c = 34
+	case strings.HasPrefix("cyan", norm):
+		c = 36
 	case strings.HasPrefix("green", norm):
 		c = 32
+	case strings.HasPrefix("magenta", norm):
+		c = 35
 	case strings.HasPrefix("red", norm):
 		c = 31
 	case strings.HasPrefix("white", norm):
 		c = 37
+	case strings.HasPrefix("yellow", norm):
+		c = 33
 	default:
 		c = -1
 	}
@@ -273,7 +279,6 @@ func Printf(templ string, args ...any) (int, error) {
 func Fprintf(w io.Writer, templ string, args ...any) (int, error) {
 	templ, _, _ = ToTtyStream(w, templ)
 	return fmt.Fprintf(w, templ, args...)
-
 }
 
 // func DebugSprintf() {

utils.go

@@ -6,5 +6,5 @@ import (
 )
 
 func Var(name string) string {
-	return fmt.Sprintf("%c{%s}", varIntro, name)
+	return fmt.Sprintf("%c{%s}", defaultVarIntro, name)
 }