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-rw-r--r--src/sexp/display.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/sexp/display.rs b/src/sexp/display.rs
index e2f4ffc..ec1b421 100644
--- a/src/sexp/display.rs
+++ b/src/sexp/display.rs
@@ -28,6 +28,7 @@ impl fmt::Display for SLeaf {
RestPat(s) => format!("..{s}"),
Quote => "quote".to_string(),
Vector => "vector".to_string(),
+ Concat => "<>".to_string(),
Print => "print".to_string(),
Let => "let".to_string(),
Fun => "fn".to_string(),