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-rw-r--r--src/script/standard.h9
1 files changed, 6 insertions, 3 deletions
diff --git a/src/script/standard.h b/src/script/standard.h
index ac4e2f3276..78492733db 100644
--- a/src/script/standard.h
+++ b/src/script/standard.h
@@ -227,8 +227,11 @@ struct TaprootSpendData
/** The Merkle root of the script tree (0 if no scripts). */
uint256 merkle_root;
/** Map from (script, leaf_version) to (sets of) control blocks.
- * The control blocks are sorted by size, so that the signing logic can
- * easily prefer the cheapest one. */
+ * More than one control block for a given script is only possible if it
+ * appears in multiple branches of the tree. We keep them all so that
+ * inference can reconstruct the full tree. Within each set, the control
+ * blocks are sorted by size, so that the signing logic can easily
+ * prefer the cheapest one. */
std::map<std::pair<CScript, int>, std::set<std::vector<unsigned char>, ShortestVectorFirstComparator>> scripts;
/** Merge other TaprootSpendData (for the same scriptPubKey) into this. */
void Merge(TaprootSpendData other);
@@ -252,7 +255,7 @@ private:
/** Merkle hash of this node. */
uint256 hash;
/** Tracked leaves underneath this node (either from the node itself, or its children).
- * The merkle_branch field for each is the partners to get to *this* node. */
+ * The merkle_branch field of each is the partners to get to *this* node. */
std::vector<LeafInfo> leaves;
};
/** Whether the builder is in a valid state so far. */