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-rw-r--r--crates/hir-def/src/attr.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/crates/hir-def/src/attr.rs b/crates/hir-def/src/attr.rs
index db1c6bc8181..b32479a3f46 100644
--- a/crates/hir-def/src/attr.rs
+++ b/crates/hir-def/src/attr.rs
@@ -274,6 +274,7 @@ pub enum DocAtom {
     KeyValue { key: SmolStr, value: SmolStr },
 }
 
+// Adapted from `CfgExpr` parsing code
 #[derive(Debug, Clone, PartialEq, Eq, Hash)]
 // #[cfg_attr(test, derive(derive_arbitrary::Arbitrary))]
 pub enum DocExpr {