Fix the way messages are appended in logs

lib/core/processes/processLauncher.js

@@ -92,22 +92,39 @@ class ProcessLauncher {
 
   // Translates logs from the child process to the logger
   _handleLog(msg) {
+    // Sometimes messages come in with line breaks, so we need to break them up accordingly.
+    let processedMessages = [];
+
+    // Ensure that `msg.message` is an array, so we process this consistently. Sometimes it
+    // is an Array, sometimes it is a string.
+    if(typeof msg.message === 'string') {
+      processedMessages = [msg.message];
+    } else {
+      msg.message.forEach((message) => {
+        let lines = message.split("\n");
+        lines.forEach((line) => { processedMessages.push(line); });
+      });
+    }
+
     const timestamp = new Date().getTime();
-    this.events.emit('process-log-' + this.name, msg.type, msg.message, this.name, timestamp);
-    this.logs.push({
-      msg: msg.message,
-      msg_clear: msg.message.stripColors,
-      logLevel: msg.logLevel,
-      name: this.name,
-      timestamp
+
+    processedMessages.forEach((message) => {
+      this.events.emit('process-log-' + this.name, msg.type, message, this.name, timestamp);
+      this.logs.push({
+        msg: message,
+        msg_clear: message.stripColors,
+        logLevel: msg.logLevel,
+        name: this.name,
+        timestamp
+      });
+      if (this.silent && msg.type !== 'error') {
+        return;
+      }
+      if (this.logger[msg.type]) {
+        return this.logger[msg.type](utils.normalizeInput(message));
+      }
+      this.logger.debug(utils.normalizeInput(message));
     });
-    if (this.silent && msg.type !== 'error') {
-      return;
-    }
-    if (this.logger[msg.type]) {
-      return this.logger[msg.type](utils.normalizeInput(msg.message));
-    }
-    this.logger.debug(utils.normalizeInput(msg.message));
   }
 
   // Handle event calls from the child process