PaperMC/paper-server/patches/sources/net/minecraft/world/item/FlintAndSteelItem.java.patch

--- a/net/minecraft/world/item/FlintAndSteelItem.java
+++ b/net/minecraft/world/item/FlintAndSteelItem.java
@@ -37,6 +37,12 @@
             BlockPos blockposition1 = blockposition.relative(context.getClickedFace());
 
             if (BaseFireBlock.canBePlacedAt(world, blockposition1, context.getHorizontalDirection())) {
+                // CraftBukkit start - Store the clicked block
+                if (org.bukkit.craftbukkit.event.CraftEventFactory.callBlockIgniteEvent(world, blockposition1, org.bukkit.event.block.BlockIgniteEvent.IgniteCause.FLINT_AND_STEEL, entityhuman).isCancelled()) {
+                    context.getItemInHand().hurtAndBreak(1, entityhuman, LivingEntity.getSlotForHand(context.getHand()));
+                    return InteractionResult.PASS;
+                }
+                // CraftBukkit end
                 world.playSound(entityhuman, blockposition1, SoundEvents.FLINTANDSTEEL_USE, SoundSource.BLOCKS, 1.0F, world.getRandom().nextFloat() * 0.4F + 0.8F);
                 BlockState iblockdata1 = BaseFireBlock.getState(world, blockposition1);
 
@@ -54,6 +60,12 @@
                 return InteractionResult.FAIL;
             }
         } else {
+            // CraftBukkit start - Store the clicked block
+            if (org.bukkit.craftbukkit.event.CraftEventFactory.callBlockIgniteEvent(world, blockposition, org.bukkit.event.block.BlockIgniteEvent.IgniteCause.FLINT_AND_STEEL, entityhuman).isCancelled()) {
+                context.getItemInHand().hurtAndBreak(1, entityhuman, LivingEntity.getSlotForHand(context.getHand()));
+                return InteractionResult.PASS;
+            }
+            // CraftBukkit end
             world.playSound(entityhuman, blockposition, SoundEvents.FLINTANDSTEEL_USE, SoundSource.BLOCKS, 1.0F, world.getRandom().nextFloat() * 0.4F + 0.8F);
             world.setBlock(blockposition, (BlockState) iblockdata.setValue(BlockStateProperties.LIT, true), 11);
             world.gameEvent((Entity) entityhuman, (Holder) GameEvent.BLOCK_CHANGE, blockposition);