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Re: How to determine whether a message has been switched


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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