Output contains too many lines (compared to `diff` on the command line)

[guettli]

Thank you for your package!

Here is a use-case where the output is too large.

capi-old.txt
capi-new.txt

The diff:

@@ -10,7 +10,7 @@
   namespace: mgt-system
 spec:
   progressDeadlineSeconds: 600
-  replicas: 2
+  replicas: 1
   revisionHistoryLimit: 10
   selector:
     matchLabels:
@@ -34,63 +34,57 @@
         - --diagnostics-address=:8443
         - --insecure-diagnostics=false
         - --use-deprecated-infra-machine-naming=false
-        - --feature-gates=ClusterTopology=true,RuntimeSDK=true
-        command:
-        - /manager
-        env:
-        - name: POD_NAMESPACE
-          valueFrom:
-            fieldRef:
-              apiVersion: v1
-              fieldPath: metadata.namespace
-        - name: POD_NAME
-          valueFrom:
-            fieldRef:
-              apiVersion: v1
-              fieldPath: metadata.name
-        - name: POD_UID
-          valueFrom:
-            fieldRef:
-              apiVersion: v1
-              fieldPath: metadata.uid
-        image: registry.k8s.io/cluster-api/cluster-api-controller:v1.7.5
-        imagePullPolicy: IfNotPresent
-        livenessProbe:
-          failureThreshold: 3
-          httpGet:
-            path: /healthz
-            port: healthz
-            scheme: HTTP
-          periodSeconds: 10
-          successThreshold: 1
-          timeoutSeconds: 1
-        name: manager
-        ports:
-        - containerPort: 9443
-          name: webhook-server
-          protocol: TCP
-        - containerPort: 9440
-          name: healthz
-          protocol: TCP
-        - containerPort: 8443
-          name: metrics
-          protocol: TCP
-        readinessProbe:
-          failureThreshold: 3
-          httpGet:
-            path: /readyz
-            port: healthz
-            scheme: HTTP
-          periodSeconds: 10
-          successThreshold: 1
-          timeoutSeconds: 1
-        resources:
-          limits:
-            cpu: 500m
-            memory: 400Mi
-          requests:
-            cpu: 300m
+        - --feature-gates=MachinePool=true,ClusterResourceSet=true,ClusterTopology=true,RuntimeSDK=true,MachineSetPreflightChecks=false
+        command:
+        - /manager
+        env:
+        - name: POD_NAMESPACE
+          valueFrom:
+            fieldRef:
+              apiVersion: v1
+              fieldPath: metadata.namespace
+        - name: POD_NAME
+          valueFrom:
+            fieldRef:
+              apiVersion: v1
+              fieldPath: metadata.name
+        - name: POD_UID
+          valueFrom:
+            fieldRef:
+              apiVersion: v1
+              fieldPath: metadata.uid
+        image: registry.k8s.io/cluster-api/cluster-api-controller:v1.8.4
+        imagePullPolicy: IfNotPresent
+        livenessProbe:
+          failureThreshold: 3
+          httpGet:
+            path: /healthz
+            port: healthz
+            scheme: HTTP
+          periodSeconds: 10
+          successThreshold: 1
+          timeoutSeconds: 1
+        name: manager
+        ports:
+        - containerPort: 9443
+          name: webhook-server
+          protocol: TCP
+        - containerPort: 9440
+          name: healthz
+          protocol: TCP
+        - containerPort: 8443
+          name: metrics
+          protocol: TCP
+        readinessProbe:
+          failureThreshold: 3
+          httpGet:
+            path: /readyz
+            port: healthz
+            scheme: HTTP
+          periodSeconds: 10
+          successThreshold: 1
+          timeoutSeconds: 1
-            memory: 200Mi
+        resources: {}
         securityContext:
           allowPrivilegeEscalation: false
           capabilities:

If I use diff on the command line, the diff is much smaller.