Keep uppercase timestamp tags in width calculation

rokath · rokath · commit 2719b9188e5a · 2026-03-26T10:52:58.000+01:00
diff --git a/internal/translator/translator.go b/internal/translator/translator.go
@@ -14,6 +14,7 @@ import (
 	"sync"
 	"syscall"
 	"time"
+	"unicode"
 
 	_ "github.com/rokath/trice/internal/charDecoder"
 	"github.com/rokath/trice/internal/decoder"
@@ -183,12 +184,21 @@ func targetStampWidth(size int, format string) int {
 func targetStampDisplayWidth(size int, format string) int {
 	s := formatTargetStamp(size, format, 0)
 	tag, rest, found := strings.Cut(s, ":")
-	if found && tag != "" {
+	if found && tag != "" && !containsUppercase(tag) {
 		return len(rest)
 	}
 	return len(s)
 }
 
+func containsUppercase(s string) bool {
+	for _, r := range s {
+		if unicode.IsUpper(r) {
+			return true
+		}
+	}
+	return false
+}
+
 func commonTargetDeltaPlaceholder() string {
 	if decoder.TargetStamp0Delta != "" {
 		return decoder.TargetStamp0Delta
diff --git a/internal/translator/translator_delta_test.go b/internal/translator/translator_delta_test.go
@@ -156,6 +156,15 @@ func TestTargetStampDisplayWidthUsesGenericTagPrefix(t *testing.T) {
 	}
 }
 
+func TestTargetStampDisplayWidthKeepsUppercaseTagPrefix(t *testing.T) {
+	if got := targetStampDisplayWidth(4, "Time:%12d"); got != len("Time:")+12 {
+		t.Fatalf("unexpected display width for uppercase tag: %d", got)
+	}
+	if got := targetStampDisplayWidth(4, "timeStamp:%12d"); got != len("timeStamp:")+12 {
+		t.Fatalf("unexpected display width for mixed-case tag: %d", got)
+	}
+}
+
 func TestAutoTargetStamp0Delta(t *testing.T) {
 	saved0Delta := decoder.TargetStamp0Delta
 	saved16Delta := decoder.TargetStamp16Delta
