2014-05-04 Implemented a web-based diff(1). I wanted to give people who don't have command line access the possibility to diff two (latex source code) files. My service should meet just the bare necessi- ties. The requirements were: (1) an upload for two files, (2) the ability to ignore whitespace, (3) colorized diff(1) output, and (4) colorized wdiff(1) output. I wanted the wdiff output, because the typical users don't usually break their lines at 80 columns but usually put whole paragraphs into a single line. wdiff is enormously useful in those cases. Probably, such services do exist already, but I wanted to write such a service myself. Thus I invested two or three hours to do it. I built upon existing code from a previous project. Techni- cally it's: PHP on the surface, diff(1) and wdiff(1) in the core, and sh/sed as clue inbetween. It's an all hacked solution, but it was fun writing it. http://marmaro.de/lue/ markus schnalke