diff --git a/mst.cxx b/mst.cxx
index f9bebf3..60e946f 100644
--- a/mst.cxx
+++ b/mst.cxx
@@ -1,4 +1,4 @@
-// vim: sw=4 ts=4 expandtab
+// vim: sw=4 ts=4 expandtab cc=120
 
 // This Source Code Form is subject to the terms of the Mozilla Public
 // License, v. 2.0. If a copy of the MPL was not distributed with this
@@ -16,52 +16,41 @@
 #include <string>
 #include <utility>
 
-int main(int argc, char *argv[]) {
-    try {
-        mstch::config::escape = [](const std::string& str) -> std::string {
-            return str;
-        };
-        std::ifstream tpl_fstream{ argv[1] };
-        std::string tpl{ std::istreambuf_iterator<char>{ tpl_fstream },
-                         std::istreambuf_iterator<char>{} };
-        mstch::map ctx{
-            {"include", mstch::lambda{ [](const std::string &filename) -> mstch::node {
-                std::ifstream file_fstream{ filename };
-                if((file_fstream.rdstate() & std::ifstream::failbit) != 0)
-                    throw std::runtime_error("Can't open file: " + filename);
-                return std::string { std::istreambuf_iterator<char>{ file_fstream },
-                                     std::istreambuf_iterator<char>{} };
-            }}},
-            {"env", mstch::lambda{ [](const std::string &env_var_name) -> mstch::node {
-                if(char *env_var_value = std::getenv(env_var_name.c_str()))
-                    return std::string{env_var_value};
-                throw std::runtime_error("Env var doesn't exist: " + env_var_name);
-            }}},
-            {"cmd", mstch::lambda{ [](const std::string &cmd) -> mstch::node {
-                // https://stackoverflow.com/a/478960/547223
-                std::array<char, 16384> buffer;  // 16 KiB
-                buffer.fill('\0');
-                std::string stdout;
-                std::unique_ptr<FILE, decltype(&pclose)> pipe(popen(cmd.c_str(), "r"), pclose);
-                if(!pipe)
-                    throw std::runtime_error("Command failed: " + cmd);
-                while (fgets(buffer.data(), buffer.size(), pipe.get()) != nullptr)
-                    stdout += buffer.data();
-                return stdout;
-            }}}
-        };
+int main(int argc, char* argv[]) {
+  using namespace std;
+  try {
+    mstch::config::escape = [](const string& str) -> string { return str; };
+    ifstream tpl_fstream{argv[1]};
+    string tpl{istreambuf_iterator<char>{tpl_fstream}, istreambuf_iterator<char>{}};
+    mstch::map ctx{{"include", mstch::lambda{[](const string& filename) -> mstch::node {
+                      ifstream file_fstream{filename};
+                      if ((file_fstream.rdstate() & ifstream::failbit) != 0)
+                        throw runtime_error("Can't open file: " + filename);
+                      return string{istreambuf_iterator<char>{file_fstream}, istreambuf_iterator<char>{}};
+                    }}},
+                   {"env", mstch::lambda{[](const string& env_var_name) -> mstch::node {
+                      if (char* env_var_value = getenv(env_var_name.c_str())) return string{env_var_value};
+                      throw runtime_error("Env var doesn't exist: " + env_var_name);
+                    }}},
+                   {"cmd", mstch::lambda{[](const string& cmd) -> mstch::node {
+                      // https://stackoverflow.com/a/478960/547223
+                      array<char, 16384> buffer;  // 16 KiB
+                      buffer.fill('\0');
+                      string stdout;
+                      unique_ptr<FILE, decltype(&pclose)> pipe(popen(cmd.c_str(), "r"), pclose);
+                      if (!pipe) throw runtime_error("Command failed: " + cmd);
+                      while (fgets(buffer.data(), buffer.size(), pipe.get()) != nullptr) stdout += buffer.data();
+                      return stdout;
+                    }}}};
 
-        for(int i=2; i+1<argc; i+=2)
-            ctx.emplace(std::make_pair(std::string(argv[i]), std::string(argv[i+1])));
+    for (int i = 2; i + 1 < argc; i += 2) ctx.emplace(make_pair(string(argv[i]), string(argv[i + 1])));
 
-        std::cout << mstch::render(tpl, ctx);
-    } catch (...) {
-        std::cerr << "Invocation:\n" << std::endl;
-        for(int i=0; i<argc; ++i)
-            std::cerr << "  '" << argv[i] << "'\n";
-        std::cerr << boost::current_exception_diagnostic_information() << std::endl;
-        return -1;
-    }
-    return 0;
+    cout << mstch::render(tpl, ctx);
+  } catch (...) {
+    cerr << "Invocation:\n" << endl;
+    for (int i = 0; i < argc; ++i) cerr << "  '" << argv[i] << "'\n";
+    cerr << boost::current_exception_diagnostic_information() << endl;
+    return -1;
+  }
+  return 0;
 }
-