A couple of comments after just returning from doing the HRP (Pyrenees) which joggles between France and Spain. Generally you will find either the old Camping Gaz pierced containers or the screw thread ones although on a previous trip on the GR5 (Netherlands, Belgium Luxembourg, France - Vosges, Jura and Alps) the Camping Gaz pierced ones were the most ubiquitous with the resealable ones only available in specialist shops.
Another thing I found was that while you can carry gas cylinders on trains in most of Europe; you cannot in Spain where they x-ray all baggage. This most probably applies to other flammable liquids as well.
Eurostar has a similar restrictions on gas canisters and flammable liquids as well as knives with 75mm+ blade or any with a locking mechanism! (
http://www.eurostar.com/UK/uk/leisure/t ... _items.jsp). All luggage is x-rayed with the Paris - London direction seeming more paranoid about knives. I carried a locking Victorinox from UK to France but got picked up on it when going back to the UK. It is always best to check on any transport system as losing a $50+ knife is a real pain.
"Perfection is attained not when there is nothing more to add, but when there is nothing more to remove".