[andrewshadura]

ifupdown, the Debian tool to manage network interfaces, used to be written in literate C using noweb. When I took it over from the original author, I struggled to understand how it worked. I had to print out the weaved version of it, and read it making notes on the paper. I eventually managed to make sense of it, but making any change was very difficult, so I ended up converting it to plain C, adding some comments from the original literate source and reindenting.