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There's surely some way of recreating the code from optree quite accurately. (See B::Deparse for a module that does something similar.)
However, I don't see the use of this. The contents of an eval BLOCK doesn't change. What's the point of printing out something you already know? What does change is the contents of variables, so there would be value in printing those.
But that's a hard problem. Consider
How would one programatically determine which variables would be relevant to print? What if the variable doesn't even exist in the eval block because the exception occured in code called by the eval block? I'm sure there are more issues.
Seems to me you'll just have to use the line number in the error message and either manually add code to print out the variables you deem relevant or use a debugger.
By the way, 1/0 (unlike 1/$x) throws an exception eval BLOCK can't catch, because the exception occurs at compile time during constant folding, long before eval is executed.
In reply to Re: Any way to access the contents of a block eval?