Looping and conditionals

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Article #2709

#2709

From: Andy Harp
Date: Tue, 15 Sep 1992 09:30

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I'm trying to implement a two-pass TeX which, on the second pass, opens a
file and searches for a key field.  How do I use \loop ... \if ... \repeat
so that I test for a NEGATIVE condition?  ie. loop until correct key is read
and then stop.
-- 
----------------------------------------------------------------
Andrew Harp                            DRA Malvern, Gt. Britain     
aharp@hermes.mod.uk                    tel  : +44 684 894462

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Path: arc1-ca.pugleaf.net!sparky!uunet!pipex!unipalm!uknet!rsre!breeze!harp
From: harp@breeze.rsre.mod.uk (Andy Harp)
Newsgroups: comp.text.tex
Subject: Looping and conditionals
Message-ID: <BuM527.B92@breeze.rsre.mod.uk>
Date: 15 Sep 92 09:30:17 GMT
Reply-To: aharp%hermes.mod.uk@relay.mod.uk
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Organization: Defence Research Agency
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X-Disclaimer: Any opinions expressed are my own.