1 files changed, 23 insertions, 20 deletions
diff --git a/melib/src/lib.rs b/melib/src/lib.rs
index 38ebfce2..5a74f7ad 100644
--- a/melib/src/lib.rs
+++ b/melib/src/lib.rs
@@ -25,24 +25,26 @@ pub mod dbg {
     macro_rules! debug {
         ($val:literal) => {
             {
-            if cfg!(feature="debug-tracing") {
-                eprint!(
-                    "[{:?}] {}:{}_{}:	",
-                    std::thread::current()
-                    .name()
-                    .map(std::string::ToString::to_string)
-                    .unwrap_or_else(|| format!("{:?}", std::thread::current().id())),
-                    file!(),
-                    line!(),
-                    column!()
-                );
-                eprintln!($val);
+                use atty;
+                if atty:is(atty::Stream::Stdout) {
+                    eprint!(
+                        "[{:?}] {}:{}_{}:	",
+                        std::thread::current()
+                        .name()
+                        .map(std::string::ToString::to_string)
+                        .unwrap_or_else(|| format!("{:?}", std::thread::current().id())),
+                        file!(),
+                        line!(),
+                        column!()
+                    );
+                    eprintln!($val);
+                }
+                $val
             }
-            $val
-        }
         };
-        ($val:expr) => {
-            if cfg!(feature="debug-tracing") {
+        ($val:expr) => {{
+            use atty;
+            if atty:is(atty::Stream::Stdout) {
                 let stringify = stringify!($val);
                 // Use of `match` here is intentional because it affects the lifetimes
                 // of temporaries - https://stackoverflow.com/a/48732525/1063961
@@ -65,9 +67,10 @@ pub mod dbg {
             } else {
                 $val
             }
-        };
-        ($fmt:literal, $($arg:tt)*) => {
-            if cfg!(feature="debug-tracing") {
+        }};
+        ($fmt:literal, $($arg:tt)*) => {{
+            use atty;
+            if atty:is(atty::Stream::Stdout) {
                 eprint!(
                     "[{:?}] {}:{}_{}:	",
                     std::thread::current()
@@ -80,7 +83,7 @@ pub mod dbg {
                 );
                 eprintln!($fmt, $($arg)*);
             }
-        };
+        }};
     }
 }