Fix separator and treating expression
diff --git a/src/log_stubs.rs b/src/log_stubs.rs
index 429a458..8315983 100644
--- a/src/log_stubs.rs
+++ b/src/log_stubs.rs
@@ -1,32 +1,32 @@
 #![allow(unused)]
 
 macro_rules! log {
-    (target: $target:expr, $lvl:expr, $($arg:tt)+) => {
+    (target: $target:expr, $lvl:expr, $($arg:tt)+) => {{
         let _ = $target;
         let _ = log!($lvl, $($arg)+);
-    }
-    ($lvl:expr, $($arg:tt)+) => {
+    }};
+    ($lvl:expr, $($arg:tt)+) => {{
         let _ = $lvl;
         let _ = format_args!($($arg)+);
-    }
+    }};
 }
 macro_rules! error {
-    (target: $target:expr, $($arg:tt)+) => { log!(target: $target, "", $($arg)+); }
-    ($($arg:tt)+) => { log!("", $($arg)+); }
+    (target: $target:expr, $($arg:tt)+) => { log!(target: $target, "", $($arg)+) };
+    ($($arg:tt)+) => { log!("", $($arg)+) };
 }
 macro_rules! warn {
-    (target: $target:expr, $($arg:tt)*) => { log!(target: $target, "", $($arg)*); }
-    ($($arg:tt)*) => { log!("", $($arg)*); }
+    (target: $target:expr, $($arg:tt)*) => { log!(target: $target, "", $($arg)*) };
+    ($($arg:tt)*) => { log!("", $($arg)*) };
 }
 macro_rules! info {
-    (target: $target:expr, $($arg:tt)+) => { log!(target: $target, "", $($arg)+); }
-    ($($arg:tt)+) => { log!("", $($arg)+); }
+    (target: $target:expr, $($arg:tt)+) => { log!(target: $target, "", $($arg)+) };
+    ($($arg:tt)+) => { log!("", $($arg)+) };
 }
 macro_rules! debug {
-    (target: $target:expr, $($arg:tt)+) => { log!(target: $target, "", $($arg)+); }
-    ($($arg:tt)+) => { log!("", $($arg)+); }
+    (target: $target:expr, $($arg:tt)+) => { log!(target: $target, "", $($arg)+) };
+    ($($arg:tt)+) => { log!("", $($arg)+) };
 }
 macro_rules! trace {
-    (target: $target:expr, $($arg:tt)+) => { log!(target: $target, "", $($arg)+); }
-    ($($arg:tt)+) => { log!("", $($arg)+); }
+    (target: $target:expr, $($arg:tt)+) => { log!(target: $target, "", $($arg)+) };
+    ($($arg:tt)+) => { log!("", $($arg)+) };
 }