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Re: syntax highlighted symbol shadowing for Curl

  • To: mathgroup at smc.vnet.net
  • Subject: [mg114910] Re: syntax highlighted symbol shadowing for Curl
  • From: JUN <noeckel at gmail.com>
  • Date: Wed, 22 Dec 2010 02:36:48 -0500 (EST)
  • References: <iemq6t$m6i$1@smc.vnet.net>

On Dec 19, 9:39 pm, Murray Eisenberg <mur... at math.umass.edu> wrote:
> VectorAnalysis`Curl is only one such instance of this phenomenon.
> Another, of which you may be aware, is Combinatorica`Star.
>
> My guess is that the effort here is being devoted to just moving the
> functionality of such packages into the kernel, although in some cases
> with a whole different design (e.g., with the new kernel function Graph,
> etc.) rather than trying to patch up messages, etc.
>
> Murray
>
> On 12/14/2010 6:55 AM, JUN wrote:
>
>
>
> > Hi,
> > there is a new shadowing conflict in version 8 that affects the Curl
> > operator from the VectorAnalysis package (heavily used in my
> > electrodynamics lecture): because of an existing System`Curl, the
> > former Curl is now highlighted as a shadowing conflict (although it
> > still works, fortunately).
>
> > I didn't find any replies to an earlier post where this issue was
> > raised:
> >http://forums.wolfram.com/mathgroup/archive/2009/Jan/msg00039.html
>
> > So right now I am resorting to this preamble to avoid the annoying and
> > confusing red highlighting of this ubiquitous operator:
>
> > SetOptions[$FrontEnd,
> >   First[Options[$FrontEnd,
> >      "AutoStyleOptions"]] /. ("HighlightSymbolShadowing" ->  _)=
 ->  \
> > ("HighlightSymbolShadowing" ->  False)]
>
> > I wish there were a more specific way to make Curl appear normal
> > again, and if anyone has a better solution that would be great.
>
> > In the same VectorAnalysis package, I also see a strange behavior when
> > typing
> > ?CrossProduct
> > The Times symbol doesn't show up correctly. I reported this as a bug.
>
> > Jens
>
> --
> Murray Eisenberg                     mur... at math.umas=
s.edu
> Mathematics & Statistics Dept.
> Lederle Graduate Research Tower      phone 413 549-1020 (H)
> University of Massachusetts                413 545-2859 (=
W)
> 710 North Pleasant Street            fax   413 545-1801
> Amherst, MA 01003-9305

Yes, you're probably right. As usual, I'll look forward to a future
release... with a mixture of hope and trepidation.

Jens


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