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Re: v9: variable name colour?

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  • Subject: [mg128931] Re: v9: variable name colour?
  • From: Murray Eisenberg <murray at>
  • Date: Tue, 4 Dec 2012 04:14:50 -0500 (EST)
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For Mathematica 9 on Mac OS X, it's still the case that a user-defined 
name to which no value has been assigned is blue; once a value is 
assigned (and the cell where it's assigned is evaluated), the name turns 
to black.

On Dec 3, 2012, at 4:03 AM, Gordon Robertson <grobertson at> wrote:

> On OS X, variable colours are now behaving as they did in v8. I've not yet
> identified which conditions give me the awkward always-blue variables and which give the current blue-to-black behaviour. (I'd crashed v9 and restarted it, and reopened the notebook that I'd been working on.)
> Gordon
> On 2012-12-02, at 1:03 PM, Gordon Robertson wrote:
> In v8 (on OS X), the name of a variable that did not have a value assigned was blue, and it changed to black when a value had been assigned to it. This was simple and very handy.
> After a day of using v9, all user-defined variables seem to be blue, period.
> Preferences | Appearance | Other offers 'Global symbols that had no value assigned' as blue by default. But if I type in and execute something simple like: aVariable=2, the variable name is blue before and after I've assigned it the value 2.
> I'd prefer to have a distinct colour for variable with no value assigned. Am I missing something simple? Apologies if I am.

Murray Eisenberg                                    murray at
Mathematics & Statistics Dept.      
Lederle Graduate Research Tower            phone 413 549-1020 (H)
University of Massachusetts                               413 545-2838 (W)
710 North Pleasant Street                         fax   413 545-1801
Amherst, MA 01003-9305

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