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Re: Are comments safe inside notebook cells

6.0 doesn't make one improvement that would have been useful. Namely it 
throws away the comments when converting between various forms.

Here is an input cell:

f[x_] :=
 Module[{c = 3},
  (* Add c = 3 to x *)
  x + c]

Select the cell and use Ctrl-Shift-I or Ctrl-Shift-T to convert the cell to 
InputForm or TraditionalForm. The comment is lost.

David Park
djmpark at

"Daniel Lichtblau" <danl at> wrote in message 
news:f4tiv5$fg5$1 at
> John Fultz wrote:
>> On Wed, 13 Jun 2007 07:19:10 -0400 (EDT), Andrew Moylan wrote:
>>>Prior to version 6, it has been considered unsafe to place comments (*
>>>like this *) inside e.g. Input cells, because it could lead to
>>>Mathematica corrupting the underlying notebook. Can anyone comment on
>>>whether this is still the case in version 6?
>> Many of these problems have been fixed.  I don't want to make any 
>> absolute
>> guarantees that no such problems exist anymore (it is enormously 
>> difficult and
>> time-consuming to prove a total absence of such bugs), but I can say with
>> considerable certainty that 6.0 is much better than 5.2 in this regard.
>> I believe some problems yet remain when mixing styles and comments, but 
>> the
>> presence and configurability of the syntax coloring features will 
>> hopefully makethis less of an issue.  Aside from that, I think we've 
>> cracked most of these
>> problems, and I'll be curious to hear people's experiences.
>> Sincerely,
>> John Fultz
>> jfultz at
>> User Interface Group
>> Wolfram Research, Inc.
> Well...since you experience is that the Mathematica front end
> handles code comments substantially better in version 6 than in past
> releases.
> Daniel Lichtblau
> Wolfram Research

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