3 files changed, 9 insertions, 6 deletions
diff --git a/src/mongo/db/matcher/expression_always_boolean.h b/src/mongo/db/matcher/expression_always_boolean.h
index 901203f9eff..054b9b417ca 100644
--- a/src/mongo/db/matcher/expression_always_boolean.h
+++ b/src/mongo/db/matcher/expression_always_boolean.h
@@ -63,8 +63,11 @@ public:
     }
 
     void serialize(BSONObjBuilder* out, SerializationOptions opts) const final {
-        // TODO support 'opts.redactFieldNames.'
-        out->append(name(), 1);
+        if (opts.replacementForLiteralArgs) {
+            out->append(name(), *opts.replacementForLiteralArgs);
+        } else {
+            out->append(name(), 1);
+        }
     }
 
     bool equivalent(const MatchExpression* other) const final {
diff --git a/src/mongo/db/matcher/expression_array.cpp b/src/mongo/db/matcher/expression_array.cpp
index 6ed79d1de5e..5f69a1211de 100644
--- a/src/mongo/db/matcher/expression_array.cpp
+++ b/src/mongo/db/matcher/expression_array.cpp
@@ -105,8 +105,9 @@ void ElemMatchObjectMatchExpression::debugString(StringBuilder& debug, int inden
 
 BSONObj ElemMatchObjectMatchExpression::getSerializedRightHandSide(
     boost::optional<StringData> replacementForLiteralArgs) const {
-    // TODO SERVER-73673 respect and test 'replacementForLiteralArgs'.
-    return BSON("$elemMatch" << _sub->serialize());
+    SerializationOptions opts;
+    opts.replacementForLiteralArgs = replacementForLiteralArgs;
+    return BSON("$elemMatch" << _sub->serialize(opts));
 }
 
 MatchExpression::ExpressionOptimizerFunc ElemMatchObjectMatchExpression::getOptimizer() const {
@@ -178,10 +179,10 @@ BSONObj ElemMatchValueMatchExpression::getSerializedRightHandSide(
     boost::optional<StringData> replacementForLiteralArgs) const {
     BSONObjBuilder emBob;
 
-    // TODO SERVER-73673 respect and test 'replacementForLiteralArgs'.
     for (auto&& child : _subs) {
         SerializationOptions opts;
         opts.includePath = false;
+        opts.replacementForLiteralArgs = replacementForLiteralArgs;
         child->serialize(&emBob, opts);
     }
 
diff --git a/src/mongo/db/matcher/expression_tree.cpp b/src/mongo/db/matcher/expression_tree.cpp
index c2778acb271..2f3f376931b 100644
--- a/src/mongo/db/matcher/expression_tree.cpp
+++ b/src/mongo/db/matcher/expression_tree.cpp
@@ -350,7 +350,6 @@ void AndMatchExpression::serialize(BSONObjBuilder* out, SerializationOptions opt
         return;
     }
 
-    // TODO SERVER-73673 this looks correct - just need to test.
     BSONArrayBuilder arrBob(out->subarrayStart("$and"));
     _listToBSON(&arrBob, opts);
     arrBob.doneFast();