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!


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