Okay, okay! I agree. I made the "within a generation" crack because I thought it would be over-reacting to say "all of Europe" would go up in flames NOW. Still, your point is well taken. It could happen much sooner. I don't think that this is a continent-wide civil war (yet), but it may be the opening shot.
There are three theoretical possibilities:
1) Some amicable solution that ends the violence and allows life to continue as before. Probability: negligible.
2) France responds with enough force to end this riot and to deter future ones. Probability: Very unlikely.
3) France "pulls out" of the Islamic neighborhoods, creating their own little Gaza strip surrounding their capital. Life continues as France-under-siege. Probability: Almost certain.
Remember the Klintoon would not allow the Serbs to take care of business in the Balkans, so, now they have the Balkans coming to western Europe.