diff --git a/lib/appenders/file.js b/lib/appenders/file.js
index 3f4f866..379e3e6 100644
--- a/lib/appenders/file.js
+++ b/lib/appenders/file.js
@@ -38,10 +38,10 @@ function fileAppender(
     throw new Error(`Invalid filename: ${file}`);
   } else if (file.endsWith(path.sep)) {
     throw new Error(`Filename is a directory: ${file}`);
-  } else {
+  } else if (file.indexOf(`~${path.sep}`) === 0) {
     // handle ~ expansion: https://github.com/nodejs/node/issues/684
     // exclude ~ and ~filename as these can be valid files
-    file = file.replace(new RegExp(`^~(?=${path.sep}.+)`), os.homedir());
+    file = file.replace('~', os.homedir());
   }
   file = path.normalize(file);
   numBackups = !numBackups && numBackups !== 0 ? 5 : numBackups;
diff --git a/lib/appenders/fileSync.js b/lib/appenders/fileSync.js
index 12436e7..5f22dd6 100755
--- a/lib/appenders/fileSync.js
+++ b/lib/appenders/fileSync.js
@@ -183,10 +183,10 @@ function fileAppender(
     throw new Error(`Invalid filename: ${file}`);
   } else if (file.endsWith(path.sep)) {
     throw new Error(`Filename is a directory: ${file}`);
-  } else {
+  } else if (file.indexOf(`~${path.sep}`) === 0) {
     // handle ~ expansion: https://github.com/nodejs/node/issues/684
     // exclude ~ and ~filename as these can be valid files
-    file = file.replace(new RegExp(`^~(?=${path.sep}.+)`), os.homedir());
+    file = file.replace('~', os.homedir());
   }
   file = path.normalize(file);
   numBackups = !numBackups && numBackups !== 0 ? 5 : numBackups;
diff --git a/lib/logger.js b/lib/logger.js
index 57dc2ee..2261870 100644
--- a/lib/logger.js
+++ b/lib/logger.js
@@ -7,7 +7,7 @@ const clustering = require('./clustering');
 const categories = require('./categories');
 const configuration = require('./configuration');
 
-const stackReg = /at (?:(.+)\s+\()?(?:(.+?):(\d+)(?::(\d+))?|([^)]+))\)?/;
+const stackReg = /^(?:\s*) at (?:(.+) \()?(?:([^(]+?):(\d+):(\d+))\)?$/;
 /**
  * The top entry is the Error
  */
@@ -36,7 +36,7 @@ function defaultParseCallStack(
     }
     const lineMatch = stackReg.exec(stacklines[0]);
     /* istanbul ignore else: failsafe */
-    if (lineMatch && lineMatch.length === 6) {
+    if (lineMatch && lineMatch.length === 5) {
       // extract class, function and alias names
       let className = '';
       let functionName = '';
diff --git a/test/tap/fileAppender-test.js b/test/tap/fileAppender-test.js
index 10626f4..6fa4703 100644
--- a/test/tap/fileAppender-test.js
+++ b/test/tap/fileAppender-test.js
@@ -52,6 +52,40 @@ test('log4js fileAppender', (batch) => {
     t.end();
   });
 
+  batch.test('with tilde expansion in filename', async (t) => {
+    const fileName = 'tmpTilde.log';
+    const expandedPath = path.join(__dirname, fileName);
+    await removeFile(expandedPath);
+
+    const sandboxedLog4js = sandbox.require('../../lib/log4js', {
+      requires: {
+        os: {
+          homedir() {
+            return __dirname;
+          },
+        },
+      },
+    });
+
+    t.teardown(async () => {
+      await new Promise((resolve) => {
+        sandboxedLog4js.shutdown(resolve);
+      });
+      await removeFile(expandedPath);
+    });
+
+    sandboxedLog4js.configure({
+      appenders: { file: { type: 'file', filename: path.join('~', fileName) } },
+      categories: { default: { appenders: ['file'], level: 'debug' } },
+    });
+
+    t.ok(
+      fs.existsSync(expandedPath),
+      'should expand tilde to create in home directory'
+    );
+    t.end();
+  });
+
   batch.test('should give error if invalid filename', async (t) => {
     const file = '';
     t.throws(
diff --git a/test/tap/fileSyncAppender-test.js b/test/tap/fileSyncAppender-test.js
index 912b1ab..eba2c86 100644
--- a/test/tap/fileSyncAppender-test.js
+++ b/test/tap/fileSyncAppender-test.js
@@ -40,6 +40,41 @@ test('log4js fileSyncAppender', (batch) => {
     });
   });
 
+  batch.test('with tilde expansion in filename', (t) => {
+    const fileName = 'tmpTilde.log';
+    const expandedPath = path.join(__dirname, fileName);
+    remove(expandedPath);
+
+    const sandboxedLog4js = sandbox.require('../../lib/log4js', {
+      requires: {
+        os: {
+          homedir() {
+            return __dirname;
+          },
+        },
+      },
+    });
+
+    t.teardown(() => {
+      log4js.shutdown(() => {
+        remove(expandedPath);
+      });
+    });
+
+    sandboxedLog4js.configure({
+      appenders: {
+        sync: { type: 'fileSync', filename: path.join('~', fileName) },
+      },
+      categories: { default: { appenders: ['sync'], level: 'debug' } },
+    });
+
+    t.ok(
+      fs.existsSync(expandedPath),
+      'should expand tilde to create in home directory'
+    );
+    t.end();
+  });
+
   batch.test('with existing file', (t) => {
     const testFile = path.join(__dirname, '/fa-existing-file-sync-test.log');
     const logger = log4js.getLogger('default-settings');