tal

tal is a filter that reads in a number of lines from standard input, then tries to determine an ending that all those lines have in common. Those common trailing characters (from now on called a 'trailer') are subsequently aligned, so that they all begin and end on the same column of text. This can be used to repair 'broken boxes' or align the backslashes on long macro definitions in C programs. But for that matter, tal will work on any kind of common ending. tal is especially useful as a filter for the vim text editor.