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Re: Mac: Xcode 7.3 problem

From: Vic Norton
Subject: Re: Mac: Xcode 7.3 problem
Date: Tue, 22 Mar 2016 20:30:03 -0400

> On Mar 22, 2016, at 6:16 PM, Vic Norton <address@hidden> wrote:
> I’ve been using Octave graphics at least once a week on my iMac for quite 
> some time (OS X 10.11.4, Octave, version 4.0.0, Gnuplot, version 5.0 
> patchlevel 3) with no problems until today. Today I installed Apple’s Xcode, 
> version 7.3, along with Apple’s Command Line Tools (OS X 10.11) for Xcode, 
> version 3.3, both of which came out Monday, March 21. These upgrades to 
> Apple’s system have apparently doomed Octave graphics.
> Here is a simple example:
>  octave> clear all
>  octave> x = 0 : 0.1 : 4;
>  octave> plot(x, sin(x));
>  ^C^CPress Control-C again to abort.
>  ^Cpanic: Interrupt: 2 -- stopping myself...
>  attempting to save variables to 'octave-workspace'...
>  save to 'octave-workspace' complete
> The control C’s are necessary to get back to the real world.
> Does anyone know of a fix for this problem. I suppose I need to un-upgrade 
> Xcode and Command line Tools and get back to the previous versions, but I’m 
> not sure how to do this.
> Any advice would be much appreciated.
> Regards,
> Vic

Another example:
   ~$ octave
   GNU Octave, version 4.0.0
   Copyright (C) 2015 John W. Eaton and others.
   This is free software; see the source code for copying conditions.
   FITNESS FOR A PARTICULAR PURPOSE.  For details, type 'warranty'.
   Octave was configured for "x86_64-apple-darwin15.2.0".
   Additional information about Octave is available at
   Please contribute if you find this software useful.
   For more information, visit
   Read to learn how to submit bug reports.
   For information about changes from previous versions, type 'news'.
   octave> close all;
   octave> hfg = figure();
   octave> hold on

“hold on” is the killer. It takes two or more control C’s to get us back to 

- Vic

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