[texhax] an unexpected loop

Randy Schilling RChilling at comcast.net
Tue Sep 18 14:52:32 CEST 2007

Dear Sir,
In the code that follows \zzn is a count register,
\irrrdgts is macro containing 0 or 1,
and \vrz{0pt} is just a phantom character, a line of width 0.
The code is part of a \newif construction used with \loop...\repeat.
I apologize if I haven't  provided enough code to show the problem.


It works with the phantom  but without the phantom,
and this is what I don.'t undersatand,  its goes into
an infinite loop.

An explanation would, as always, be very much appreciated.

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