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From: joel@pandora.pa.dec.com (Joel McCormack)
Newsgroups: comp.sys.dec,comp.windows.x
Subject: Re: DECWindows and twm
Keywords: DECwindows X twm pmax DECstation
Message-ID: <1610@bacchus.dec.com>
Date: 23 Jul 89 23:39:35 GMT
References: <5586@pt.cs.cmu.edu>
Sender: news@decwrl.dec.com
Distribution: usa
Lines: 12

There was a horrible region bug in the first release of the DECStation 3100
server.  The bug was actually lurking since time immemorial; my faster
region code just happened to depend on a certain boolean reflecting reality,
which it didn't.  The most obvious symptom of this bug was lost screen
areas: some area on the screen would become ``on top'' of everything else,
and whatever was last there remained there forever.  This behavior did not
ever seem happen using dxwm, but it happened with uwm and its descendants.

In any case, this bug should be fixed in the Ultrix 3.1/UWS 2.1 maintenance
release.

- Joel McCormack (decwrl!joel, joel@decwrl.dec.com)