> Is there any reason why the callback appends to a buffer instead of > printing the data immediately? Even though I answered you about that in our meeting, I'll answer you again only to make it transparent for the other reviewers. My idea was to build the output string and if something goes wrong (e.g. the user requested a invalid key after some valid keys), the process would exit without any output. After our meeting, we agreed that this wouldn't be so important and it would be better making the code simpler by just printing the key-value pairs.
