added -e: mers -e println("you don't need a file for this")

.gitignore

@@ -1,2 +1,4 @@
 /mers/target
+/mers/Cargo.lock
 /mers_libs/*/target
+/mers_libs/*/Cargo.lock

mers/src/main.rs

@@ -6,10 +6,20 @@ pub mod script;
 
 fn main() {
     let path = std::env::args().nth(1).unwrap();
-    let script = parse::parse::parse(&mut parse::file::File::new(
-        std::fs::read_to_string(&path).unwrap(),
-        path.into(),
-    ))
+    let script = parse::parse::parse(&mut if path.trim() == "-e" {
+        parse::file::File::new(
+            std::env::args()
+                .skip(2)
+                .map(|mut v| {
+                    v.push('\n');
+                    v
+                })
+                .collect::<String>(),
+            path.into(),
+        )
+    } else {
+        parse::file::File::new(std::fs::read_to_string(&path).unwrap(), path.into())
+    })
     .unwrap();
     println!(" - - - - -");
     let start = Instant::now();