[PRL] disallowing shadowing

[Dave Herman]

> AFAICT, you are referring to "Is Block Structure Really Necessary",  
> Soft.: Pract. & Exp. 11:8 (1981), 853-866.
> 
> I haven't found a URL for it yet, but I figured others might find the  
> title and bibliographic info useful.

I just found it here:

http://www.cs.princeton.edu/~drh/storage/documents/blockstructure.pdf

It seems to be arguing against even higher-order procedures, which is 
not what I was talking about. I was talking only about shadowing. But 
I'll have to read the article.

Dave