Hi René, On Sat, 3 Sep 2016, René Scharfe wrote: > Add and use a helper function that decodes the char value of two > hexadecimal digits. It returns a negative number on error, avoids > running over the end of the given string and doesn't shift negative > values. I like it! Maybe stress a little bit why this is a good change? Like, DRY up code, makes the code safer (bt avoiding shifting negative values)? > 6 files changed, 21 insertions(+), 78 deletions(-) Very, very nice! Thanks, Dscho