That program has made me realize there exists a single stylistic justification for 8 space tabs: you can fit up to six character goto labels into the indentation margins; you can put a label on any statement without adding a line.
Yes, that was my reasoning. Also there is non-written rule in this project that forbids me from going wider than 80 columns. With that I initially had indentation set to 2 spaces but later I realized that code is indented at most 2 times and it's better to make space for goto labels on the left.
:)