1 files changed, 22 insertions, 0 deletions
diff --git a/tests/ui/proc-macro/nodelim-groups.rs b/tests/ui/proc-macro/nodelim-groups.rs
new file mode 100644
index 000000000..ec3019902
--- /dev/null
+++ b/tests/ui/proc-macro/nodelim-groups.rs
@@ -0,0 +1,22 @@
+// run-pass
+// aux-build:test-macros.rs
+// compile-flags: -Z span-debug
+// edition:2018
+//
+// Tests the pretty-printing behavior of inserting `Invisible`-delimited groups
+
+#![no_std] // Don't load unnecessary hygiene information from std
+extern crate std;
+
+extern crate test_macros;
+use test_macros::print_bang_consume;
+
+macro_rules! expand_it {
+    (($val1:expr) ($val2:expr)) => { expand_it!($val1 + $val2) };
+    ($val:expr) => { print_bang_consume!("hi" $val (1 + 1)) };
+}
+
+fn main() {
+    expand_it!(1 + (25) + 1);
+    expand_it!(("hello".len()) ("world".len()));
+}