Try to load language for --do-you-understand

src/main.rs

@@ -37,7 +37,16 @@ fn main() {
 
     if let Some(filetype) = matches.value_of("do-you-understand") {
         let language = ffi::filetype_to_language(filetype);
-        std::process::exit(if language.is_some() { 0 } else { 1 });
+        if let Some(language) = language {
+            eprintln!("Known language. Trying to load");
+            let mut parser = Parser::new();
+            parser.set_language(language).unwrap();
+            eprintln!("Loaded successfully");
+            std::process::exit(0);
+        } else {
+            eprintln!("Unknown language");
+            std::process::exit(1);
+        }
     }
 
     let config = if let Some(config_path) = matches.value_of("config") {