Control-C will cancel the current command and return you to the "sage:" 
prompt.

  John



On Tuesday, June 9, 2015 at 9:58:46 AM UTC-7, Craig E Larson wrote:
>
> Sometimes I forget a parenthesis, etc, and I get a colon input prompt. 
> Double-enter won't escape the colon. Correcting the syntax also isn't 
> enough. Control-Z will exit Sage totally and I lose my data and history. Is 
> there another way to escape the colon besides Control-Z?
>
> Here's an example.
>
> sage: is_P_position(ChompBoard([3,3,3,1])
> ....: 
> ....: is_P_position(ChompBoard([3,3,3,1]))
> ....: 
> ....: is_P_position(ChompBoard([3,3,3,1]))
> ....: 
> ....: 
> ....: 
> ....: 
> ....:   
> ....:          
> Forever....
>
> Thanks.
>

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