[plt-scheme] scribble examples and errors

The "eval" comes from the sandbox, which reads terms to evaluate using
`read-syntax' with the source 'eval. Maybe that should be configurable
in the sandbox, so you could use #f to indicate no source? (Eli?)

At Wed, 26 Aug 2009 14:03:51 -0400, Ryan Culpepper wrote:
> How can I eliminate the "eval:X:0:" prefix from the error message  
> shown in scribble examples for syntax errors, while still showing the  
> terms that caused the error?
> 
> For example, if I put this in my scribble file:
> 
>    @(examples (raise-syntax-error 'some-example "some message" #'x))
> 
> I get this in the output:
> 
>    Example:
>      > (raise-syntax-error 'some-example "some message" #'x)
>      eval:1:0: some-example: some message in: x
> 
> If I create an evaluator and set the 'error-print-source-location'  
> parameter to #f within the evaluator, the prefix goes away but so do  
> the terms:
> 
>    Example:
>      > (raise-syntax-error 'some-example "some message" #'x)
>      some-example: some message
> 
> Is there any way to get the following?
> 
>    Example:
>      > (raise-syntax-error 'some-example "some message" #'x)
>      some-example: some message in: x
> 
> Ryan
> 
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