diff --git a/lib/parse-args.js b/lib/parse-args.js
index 1e76335..3d029be 100644
--- a/lib/parse-args.js
+++ b/lib/parse-args.js
@@ -20,17 +20,29 @@ function parseArgs(args) {
     const command = program.args[0];
     const commandArgs = program.args.slice(1);
     const noOverride = !program.override;
+    let rc;
+    if (program.environments && program.environments.length) {
+        rc = rc || {};
+        rc.environments = program.environments;
+    }
+    if (program.rcFile) {
+        rc = rc || {};
+        rc.filePath = program.rcFile;
+    }
+    let envFile;
+    if (program.file) {
+        envFile = envFile || {};
+        envFile.filePath = program.file;
+    }
+    if (program.fallback != null) {
+        envFile = envFile || {};
+        envFile.fallback = program.fallback;
+    }
     return {
         command,
         commandArgs,
-        envFile: {
-            filePath: program.file,
-            fallback: program.fallback
-        },
-        rc: {
-            environments: program.environments,
-            filePath: program.rcFile
-        },
+        envFile,
+        rc,
         options: {
             noOverride
         }
diff --git a/lib/parse-env-file.js b/lib/parse-env-file.js
index a1dc986..3423dc5 100644
--- a/lib/parse-env-file.js
+++ b/lib/parse-env-file.js
@@ -60,7 +60,9 @@ function parseEnvVars(envString) {
         const key = match[2].trim();
         const value = match[3].trim() || '';
         // remove any surrounding quotes
-        matches[key] = value.replace(/(^['"]|['"]$)/g, '');
+        matches[key] = value
+            .replace(/(^['"]|['"]$)/g, '')
+            .replace(`\\n`, `\n`);
     }
     return matches;
 }
diff --git a/lib/parse-rc-file.js b/lib/parse-rc-file.js
index c8e4181..56e1c7c 100644
--- a/lib/parse-rc-file.js
+++ b/lib/parse-rc-file.js
@@ -30,7 +30,8 @@ function getRCFileVars({ environments, filePath }) {
         const ext = path_1.extname(absolutePath).toLowerCase();
         let parsedData;
         if (ext === '.json' || ext === '.js') {
-            parsedData = require(absolutePath);
+            const possiblePromise = require(absolutePath); /* eslint-disable-line */
+            parsedData = utils_1.isPromise(possiblePromise) ? yield possiblePromise : possiblePromise;
         }
         else {
             const file = yield readFileAsync(absolutePath, { encoding: 'utf8' });
diff --git a/lib/signal-termination.js b/lib/signal-termination.js
index 530d91a..0ee320b 100644
--- a/lib/signal-termination.js
+++ b/lib/signal-termination.js
@@ -42,10 +42,10 @@ class TermSignals {
      * Terminate parent process helper
      */
     _terminateProcess(code, signal) {
-        if (signal !== undefined) {
+        if (signal != null) {
             return process.kill(process.pid, signal);
         }
-        if (code !== undefined) {
+        if (code != null) {
             return process.exit(code);
         }
         throw new Error('Unable to terminate parent process successfully');
diff --git a/src/parse-args.ts b/src/parse-args.ts
index d582139..a527674 100644
--- a/src/parse-args.ts
+++ b/src/parse-args.ts
@@ -21,17 +21,32 @@ export function parseArgs (args: string[]): EnvCmdOptions {
   const command = program.args[0]
   const commandArgs = program.args.slice(1)
   const noOverride = !program.override
+
+  let rc: any
+  if (program.environments && program.environments.length) {
+    rc = rc || {}
+    rc.environments = program.environments
+  }
+  if (program.rcFile) {
+    rc = rc || {}
+    rc.filePath = program.rcFile
+  }
+
+  let envFile: any
+  if (program.file) {
+    envFile = envFile || {}
+    envFile.filePath = program.file
+  }
+  if (program.fallback != null) {
+    envFile = envFile || {}
+    envFile.fallback = program.fallback
+  }
+
   return {
     command,
     commandArgs,
-    envFile: {
-      filePath: program.file,
-      fallback: program.fallback
-    },
-    rc: {
-      environments: program.environments,
-      filePath: program.rcFile
-    },
+    envFile,
+    rc,
     options: {
       noOverride
     }
diff --git a/src/signal-termination.ts b/src/signal-termination.ts
index 0bbcd66..8a8c7d6 100644
--- a/src/signal-termination.ts
+++ b/src/signal-termination.ts
@@ -45,10 +45,10 @@ export class TermSignals {
    * Terminate parent process helper
    */
   public _terminateProcess (code?: number, signal?: string): void {
-    if (signal !== undefined) {
+    if (signal != null) {
       return process.kill(process.pid, signal)
     }
-    if (code !== undefined) {
+    if (code != null) {
       return process.exit(code)
     }
     throw new Error('Unable to terminate parent process successfully')