Add flowFilePretty option

red/storage/localfilesystem.js

@@ -181,7 +181,16 @@ var localfilesystem = {
         if (fs.existsSync(flowsFullPath)) {
             fs.renameSync(flowsFullPath,flowsPrev);
         }
-        return nodeFn.call(fs.writeFile, flowsFullPath, JSON.stringify(flows));
+        
+        var flowData;
+        
+        if (settings.flowFilePretty) {
+            flowData = JSON.stringify(flows,null,4);
+        } else {
+            flowData = JSON.stringify(flows);
+        }
+        
+        return nodeFn.call(fs.writeFile, flowsFullPath, flowData);
     },
 
     getCredentials: function() {
@@ -207,7 +216,14 @@ var localfilesystem = {
     },
 
     saveCredentials: function(credentials) {
-        return nodeFn.call(fs.writeFile, credentialsFile, JSON.stringify(credentials))
+        var credentialData;
+        if (settings.flowFilePretty) {
+            credentialData = JSON.stringify(credentials,null,4);
+        } else {
+            credentialData = JSON.stringify(credentials);
+        }
+        
+        return nodeFn.call(fs.writeFile, credentialsFile, credentialData)
     },
 
     getAllFlows: function() {

settings.js

@@ -41,6 +41,10 @@ module.exports = {
     // The file containing the flows. If not set, it defaults to flows_<hostname>.json
     //flowFile: 'flows.json',
 
+    // To enabled pretty-printing of the flow within the flow file, set the following
+    //  property to true:
+    //flowFilePretty: true,
+    
     // By default, all user data is stored in the Node-RED install directory. To
     // use a different location, the following property can be used
     //userDir: '/home/nol/.node-red/',