[new] What font is that you’re using in the line numbers screenshot?
[new] It’s just Deja Vu Sans Mono, the standard Gnome-terminal font on ubuntu.
[new] I tried your align-by-current-symbol, but emacs 23.1 complains, that the function align-string is unknown. I searched around a bit, but couldn’t find a definition anywhere. Which additional package do I need to use your extension?