From c14994fb09011197559484f81b52ca626bb93fab Mon Sep 17 00:00:00 2001
From: Yaroslav Bolyukin <iam@lach.pw>
Date: Mon, 09 Oct 2023 14:04:55 +0000
Subject: [PATCH] doc: ethereum sponsoring clarification


---
--- a/pallets/evm-transaction-payment/src/lib.rs
+++ b/pallets/evm-transaction-payment/src/lib.rs
@@ -89,6 +89,8 @@
 ) -> Option<T::CrossAccountId> {
 	let accept_gas_fee = |gas_fee| {
 		let (base_fee, _) = T::FeeCalculator::min_gas_price();
+		// Metamask specifies base fee twice as much as chain reported minGasPrice
+		// But we allow further leeway (why?), sponsored base_fee to be 2.1*minGasPrice, thus 21/10.
 		base_fee <= gas_fee && gas_fee <= base_fee * 21 / 10
 	};
 	let (max_fee_per_gas, may_sponsor) = match (max_fee_per_gas, is_transactional) {

-- 
gitstuff