[texhax] \vline and fat column rules

Philip Ratcliffe philip.ratcliffe at email.it
Wed Jun 15 19:22:37 CEST 2005

Spot the difference:

\global\arrayrulewidth #1}%
\vline {\global\arrayrulewidth\savedwidth}\ignorespaces}

The point is this: something like \wvlineconst automatically eats up any
following spaces (that's a TeX rule) whereas something like \wvlinevar{1pt}
will not and the following space gets counted.  So, the command
\ignorespaces is necessary to avoid the extra space, which is what is
causing the positional shift.

Cordialmente,  Phil Ratcliffe

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