diff --git a/lib/aux_vis.cpp b/lib/aux_vis.cpp
index 12c15b4f..a0c6206d 100644
--- a/lib/aux_vis.cpp
+++ b/lib/aux_vis.cpp
@@ -1785,24 +1785,26 @@ void SetFont(const std::string& fn)
 #endif
 }
 
-function<string(double)> NumberFormatter(int precision, char format, bool showsign)
+function<string(double)> NumberFormatter(int precision, char format,
+                                         bool showsign)
 {
    return [precision, format, showsign](double x) -> string
    {
       ostringstream oss;
-      switch (format) {
+      switch (format)
+      {
          case 'f':
-               oss << fixed;
-               break;
+            oss << fixed;
+            break;
          case 's':
-               oss << scientific;
-               break;
+            oss << scientific;
+            break;
          case 'd':
-               oss << defaultfloat;
-               break;
+            oss << defaultfloat;
+            break;
          default:
             MFEM_WARNING("Unknown formatting type. Using default. "
-            << "Valid options include: ['f', 's', 'd']" << endl);
+                         << "Valid options include: ['f', 's', 'd']" << endl);
             oss << defaultfloat;
             break;
       };
diff --git a/lib/aux_vis.hpp b/lib/aux_vis.hpp
index e1b8c259..27ce2cab 100644
--- a/lib/aux_vis.hpp
+++ b/lib/aux_vis.hpp
@@ -136,7 +136,8 @@ bool SetFont(const vector<std::string>& patterns, int height);
 void SetFont(const std::string& fn);
 
 void SetUseHiDPI(bool status);
-function<string(double)> NumberFormatter(int precision=4, char format='d', bool showsign=false);
+function<string(double)> NumberFormatter(int precision=4, char format='d',
+                                         bool showsign=false);
 function<string(double)> NumberFormatter(string formatting);
 bool isValidNumberFormatting(const string& formatting);
 
@@ -148,40 +149,40 @@ bool isValidNumberFormatting(const string& formatting);
 template <typename T>
 T prompt(const string question,
          const T* default_value = nullptr,
-         function<bool(T)> validator = [](T) { return true; })
+function<bool(T)> validator = [](T) { return true; })
 {
-    T input;
-    string strInput;
-
-    while (true)
-    {
-        cout << question << " ";
-        getline(cin, strInput);
-        stringstream buf(strInput);
-
-        if (strInput.empty() && default_value != nullptr)
-        {
-            cout << "Input empty. Using default value: " << *default_value << endl;
-            return *default_value;
-        }
-
-        if (buf >> input)
-        {
-            if (validator(input))
-            {
-                return input;
-            }
-            else
-            {
-               cout << "Input is not valid. Please try again." << endl;
-            }
-        }
-        else
-        {
-           cout << "Input can not be casted to expected type. Please try again." << endl;
-        }
-    }
-    return input;
+   T input;
+   string strInput;
+
+   while (true)
+   {
+      cout << question << " ";
+      getline(cin, strInput);
+      stringstream buf(strInput);
+
+      if (strInput.empty() && default_value != nullptr)
+      {
+         cout << "Input empty. Using default value: " << *default_value << endl;
+         return *default_value;
+      }
+
+      if (buf >> input)
+      {
+         if (validator(input))
+         {
+            return input;
+         }
+         else
+         {
+            cout << "Input is not valid. Please try again." << endl;
+         }
+      }
+      else
+      {
+         cout << "Input can not be casted to expected type. Please try again." << endl;
+      }
+   }
+   return input;
 }
 
 #endif
diff --git a/lib/sdl.cpp b/lib/sdl.cpp
index 958389e6..1149a79d 100644
--- a/lib/sdl.cpp
+++ b/lib/sdl.cpp
@@ -382,8 +382,8 @@ void SdlWindow::mainIter()
                keep_going = true;
                break;
             case SDL_KEYDOWN:
-// For debugging: uncomment the next line to track key events.
-// #define TRACK_KEY_EVENTS
+               // For debugging: uncomment the next line to track key events.
+               // #define TRACK_KEY_EVENTS
 #ifdef TRACK_KEY_EVENTS
                cout << "Event: SDL_KEYDOWN sym=" << e.key.keysym.sym
                     << " mod=" << e.key.keysym.mod << endl;
diff --git a/lib/threads.cpp b/lib/threads.cpp
index 4e964ee9..e961c5f7 100644
--- a/lib/threads.cpp
+++ b/lib/threads.cpp
@@ -1256,7 +1256,8 @@ void communication_thread::execute()
          string formatting;
 
          *is[0] >> ws >> c; // read the opening char
-         getline(*is[0], formatting, c); // read formatting string & use c for termination
+         getline(*is[0], formatting,
+                 c); // read formatting string & use c for termination
 
          // all processors sent the command
          for (size_t i = 1; i < is.size(); i++)
@@ -1277,7 +1278,8 @@ void communication_thread::execute()
          string formatting;
 
          *is[0] >> ws >> c; // read the opening char
-         getline(*is[0], formatting, c); // read formatting string & use c for termination
+         getline(*is[0], formatting,
+                 c); // read formatting string & use c for termination
 
          // all processors sent the command
          for (size_t i = 1; i < is.size(); i++)
diff --git a/lib/vsdata.cpp b/lib/vsdata.cpp
index adca19b6..b0351f18 100644
--- a/lib/vsdata.cpp
+++ b/lib/vsdata.cpp
@@ -571,10 +571,11 @@ void KeycPressed(GLenum state)
 
       int precision = prompt<int>("Enter precision (4): ",
                                   &default_precision,
-                                  [](int p){ return p>=0; });
-      char format = prompt<char>("Enter format [(d)efault, (f)ixed, (s)cientific] (d): ",
-                                 &default_format,
-                                 [](char c){ return c=='d' || c=='f' || c=='s'; });
+      [](int p) { return p>=0; });
+      char format =
+         prompt<char>("Enter format [(d)efault, (f)ixed, (s)cientific] (d): ",
+                      &default_format,
+      [](char c) { return c=='d' || c=='f' || c=='s'; });
       bool showsign = prompt<bool>("Show sign? [(1)true, (0)false] (0): ",
                                    &default_showsign);
       vsdata->SetColorbarNumberFormat(precision, format, showsign);
@@ -628,10 +629,11 @@ void Key_Mod_a_Pressed(GLenum state)
 
       int precision = prompt<int>("Enter precision (4): ",
                                   &default_precision,
-                                  [](int p){ return p>=0; });
-      char format = prompt<char>("Enter format [(d)efault, (f)ixed, (s)cientific] (d): ",
-                                 &default_format,
-                                 [](char c){ return c=='d' || c=='f' || c=='s'; });
+      [](int p) { return p>=0; });
+      char format =
+         prompt<char>("Enter format [(d)efault, (f)ixed, (s)cientific] (d): ",
+                      &default_format,
+      [](char c) { return c=='d' || c=='f' || c=='s'; });
       bool showsign = prompt<bool>("Show sign? [(1)true, (0)false] (0): ",
                                    &default_showsign);
       vsdata->SetAxisNumberFormat(precision, format, showsign);