Semantic patching with Coccinelle

Ah, yes, but Douglas Adams was a world-class procrastinator, and what else is writing a tool but the most productive form of procrastination? As for conservation... well, I suppose you could draw a long and tortured analogy about how conservation is a bit like that kind of job, and the temptation is to get all of the conditions exactly right for a creature's continued survival, and how even if it dies off in the meantime, before its habitat is properly ready, you still get that sense of achievement from having done a little something to save the world anyway... or something...