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MathGroup Archive 2006

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Re: How to determine whether a message has been switched

  • To: mathgroup at smc.vnet.net
  • Subject: [mg71468] Re: [mg71455] How to determine whether a message has been switched
  • From: Carl Woll <carlw at wolfram.com>
  • Date: Mon, 20 Nov 2006 02:43:50 -0500 (EST)
  • References: <200611190610.BAA23575@smc.vnet.net>

Andrew Moylan wrote:

>Hi all,
>
>When writing algorithms, I sometimes decide to disable a particular
>message using the function Off[]. At the end of my routine, I re-enable
>the message using the function On[].
>
>Unfortunantely, if the message in question has already been turned off
>(by some other function, for example), then my code will have the
>unfortunate side-effect of switching it back on. What I really want is
>to disable the message for the duration of my routine, and then set it
>back to its original state at the end of my routine.
>
>Thus: Is there some way to determine whether a message has been
>switched Off[] (or On[])?
>
>Cheers,
>Andrew
>  
>
Look at the message:

Off[General::spell1]

In[2]:=
General::spell1
Out[2]=
$Off[Possible spelling error: new symbol name "`1`" is similar to existing \
symbol "`2`".]

Messages that have been turned off are wrapped in $Off.

Carl Woll
Wolfram Research


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