ICU-20593 Data slicing: Fix mixed file and resource filter.

.ci-builds/data-filter.json

@@ -6,5 +6,20 @@
       "de",
       "zh"
     ]
-  }
-}
+  },
+// Test mixed feature filter and resource filter
+  "featureFilters": {
+    "misc": {
+      "whitelist": ["supplementalData"]
+    }
+  },
+  "resourceFilters": [
+    {
+      "categories": ["misc"],
+      "files": {
+	"whitelist": ["supplementalData"]
+      },
+      "rules": ["+/*"]
+    }
+  ]
+}

icu4c/source/python/icutools/databuilder/request_types.py

@@ -175,6 +175,7 @@ class RepeatedExecutionRequest(AbstractExecutionRequest):
     def _del_at(self, i):
         super(RepeatedExecutionRequest, self)._del_at(i)
         del self.output_files[i]
+        del self.specific_dep_files[i]
         for _, v in self.repeat_with.items():
             if isinstance(v, list):
                 del v[i]