Page Layout ⇒ Vertical dashed Line

[Arnymenos]

I want a vertical dashed line, the height being the height of the current line. Thus a direct counterpart to \vline. Currently, I'm using a workaround with the "arydshln" package:

Code: Select all

\begin{tabular}{c:c}
a & b
\end{tabular}

I was hoping for a more direct solution, along the lines of the following example, just with the "1cm" filled in automatically.

Code: Select all

\def\vdashline[1]{
  \vbox to #1 {
    \xleaders\vbox{\hrule height 4pt width 0.02cm\vskip 2pt plus 1fill}\vfill
  }
}

a\vdashline{1cm}b

(Also, the above code does not handle the ends of the line correctly.)

Any advice (besides "stick with arydshln")?