Print all options at start.

src/main.cpp

@@ -28,6 +28,7 @@
 #include <iostream>
 #include <locale>
 #include <string>
+#include <typeinfo>
 #include <vector>
 
 int main(int argc, char *argv[])
@@ -66,15 +67,27 @@ int main(int argc, char *argv[])
         return EXIT_SUCCESS;
     }
 
-    cout << "extended-regexp: " << vm.count("extended-regexp") << '\n';
-    cout << "perl-regexp: " << vm.count("perl-regexp") << '\n';
-    cout << "ignore-case: " << vm.count("ignore-case") << '\n';
-
-    if (vm.count("regexp") > 0)
+    // Print all options.
+    for (const auto &opt : vm)
     {
-        for (const auto &regex : vm["regexp"].as<std::vector<std::string>>())
+        if (opt.second.value().type() == typeid(std::vector<std::string>))
         {
-            cout << "Searching for: " << regex << '\n';
+            for (const auto &str : opt.second.as<std::vector<std::string>>())
+            {
+                cout << opt.first << ": " << str << '\n';
+            }
+        }
+        else
+        {
+            auto second{opt.second.as<std::string>()};
+            if (second.empty())
+            {
+                cout << opt.first << ": true\n";
+            }
+            else
+            {
+                cout << opt.first << ": " << second << '\n';
+            }
         }
     }