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MathGroup Archive 1998

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Re: Cut and paste edits misaligned with screen image

  • To: mathgroup at smc.vnet.net
  • Subject: [mg14096] Re: [mg14084] Cut and paste edits misaligned with screen image
  • From: "Brett H. Barnhart" <brettb>
  • Date: Fri, 25 Sep 1998 03:15:21 -0400
  • Sender: owner-wri-mathgroup at wolfram.com

Joe, 

This is a bug in Mac OS 8.0 and 8.1. Please see
http://www.wolfram.com/support/Systems/Macintosh/Compatibility/80.html
for the related FAQ and patch.

Brett

At 03:25 AM 9/22/98 -0400, Joe Gwinn wrote:
>I have recently been observing some weird behaviour in Mathematica 3.0.1
>for PowerPC under MacOS 8.1.  Everything else seems to work, although I
>get weird error messages from time to time.  
>
>The problem appeared only a few months ago, long after the initial
>installation of Mathematica 3.0.1.  Reinstalling Mathematica didn't
>help, and no other application is afflicted.  It does not appear to be
>a virus.
>
>The behaviour is that when editing text on the screen, the edit happens
>a few characters away (usually to the left) from the blinking edit
>point bar.  One can in fact do editing with this behaviour, but it's
>slow and error prone.  The oddity seems to be confined to the current
>line, and I have never seen Mathematica become confused about which
>line it's on.  
>
>Another odd behaviour that started at about the same time is that
>Mathematica variables will get a tail, a hard space to the right.  This
>space cannot be deleted, and interferes with editing because the
>insertion point is usually off by a few characters.
>
>These oddities affect editing, but seem otherwise harmless.  Sliding the
>image offscreen and then back may fix the displayed line, but doesn't
>affect the misalignment, once started.  Not all lines are affected. 
>Quitting Mathematica and re-launching seems to reset the problem, so
>most lines are unaffected.
>
>
>Does anyone have any idea what causes this, and how to fix it?
>
>My suspicion is that some obscure option has somehow been set.
>
>
>Joe Gwinn
>
>


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