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-rw-r--r--rust/syn/custom_punctuation.rs2
1 files changed, 2 insertions, 0 deletions
diff --git a/rust/syn/custom_punctuation.rs b/rust/syn/custom_punctuation.rs
index eef5f5458459..d37c0e9c3a1e 100644
--- a/rust/syn/custom_punctuation.rs
+++ b/rust/syn/custom_punctuation.rs
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
/// Define a type that supports parsing and printing a multi-character symbol
/// as if it were a punctuation token.
///