LogStream is used to pipe output generated by functions writing to outputStream* into the UL framework. In contrast to other outputStreams, it requires that the output written is terminated with a cr().

That is because LogStream caches the written characters until cr() and writes then a full line to UL. Hence it requires the user to always write full lines, otherwise it asserts.

However, that is very inconvenient, since often one just calls a pre-existing xxx->print_on(outputStream*) function, and one does not know if the function terminates with a cr().

It would be way more convenient were LogStream to write any unfinished output left in its buffer to UL as one last line.