Index: runtime/bin/vmservice/observatory/lib/src/elements/observatory_element.dart |
diff --git a/runtime/bin/vmservice/observatory/lib/src/elements/observatory_element.dart b/runtime/bin/vmservice/observatory/lib/src/elements/observatory_element.dart |
index 1141def5ee66e662aae0a149a9601f220a167931..43a4b5b5c95ea78b9b75910171dacd93f52d51cb 100644 |
--- a/runtime/bin/vmservice/observatory/lib/src/elements/observatory_element.dart |
+++ b/runtime/bin/vmservice/observatory/lib/src/elements/observatory_element.dart |
@@ -125,8 +125,10 @@ class ObservatoryElement extends PolymerElement { |
else if (codeUnit == '\$'.codeUnitAt(0)) result.addAll('\\\$'.codeUnits); |
else if (codeUnit == '\\'.codeUnitAt(0)) result.addAll('\\\\'.codeUnits); |
else if (codeUnit == "'".codeUnitAt(0)) result.addAll("'".codeUnits); |
- else if (codeUnit < 32) result.addAll("\\u$codeUnit".codeUnits); |
- else result.add(codeUnit); |
+ else if (codeUnit < 32) { |
+ var escapeSequence = "\\u" + codeUnit.toRadixString(16).padLeft(4, "0"); |
+ result.addAll(escapeSequence.codeUnits); |
+ } else result.add(codeUnit); |
} |
if (wasTruncated) { |
result.addAll("...".codeUnits); |