Icelandic, utf8 and utf8x in LaTeX
First of all, what's the difference between utf8 and utf8x in \usepackage[utf8]{inputenc} \usepackage[utf8x]{inputenc} when used in LaTeX? Secondly, what packages are required when writing an article in Icelandic using LaTeX? I found: \usepackage[icelandic]{babel} \usepackage[T1]{fontenc} \usepackage[utf8x]{inputenc} after experimenting a bit but I have a feeling some part of the code may be redundant. And even with them the aforementioned packages, the code inside \begin{lstlisting} ... \end{lstlisting} isn't rendered with Icelandic characters when outputted through pdflatex in Ubuntu,