Updated sanitizeCategory to better account for category names.

tools/gardening/lib/src/util.dart

Index: tools/gardening/lib/src/util.dart
diff --git a/tools/gardening/lib/src/util.dart b/tools/gardening/lib/src/util.dart
index 2e48792829e170eda60e0be46ad68182c7c6362a..22161bc1cc31035ff0b6ce41972c9b7e7d020130 100644
--- a/tools/gardening/lib/src/util.dart
+++ b/tools/gardening/lib/src/util.dart
@@ -108,9 +108,13 @@ void processArgResults(ArgResults argResults) {
 
 /// Strips un-wanted characters from string [category] from CBE json.
 String sanitizeCategory(String category) {
-  // Category name starts with either two or three numbers and
-  // end with |all. Instead of doing any fancy regular-expr,
-  // we just test if third char is a number.
-  return category.substring(
-      category.codeUnitAt(2) <= 64 ? 3 : 2, category.length - 4);
+  // Category name starts with a channel number (normally consisting of 1-3

[Bill Hesse, 2017/09/01 11:10:57]

LGTM, but could you just regexp match $[0-9]+(.*)\|all^ and take the matching
group 1 in parentheses?

[mkroghj, 2017/09/01 11:37:34]

swapped $ and ^.

Done

+  // digits) and ends with |all. Instead of doing any fancy regular-expr,
+  // we just test if the char is not an alpha-char.
+  int firstIndex = 0;
+  while (
+      category.codeUnitAt(firstIndex) <= 64 && firstIndex < category.length) {
+    firstIndex++;
+  }
+  return category.substring(firstIndex, category.length - 4);
 }