Triple declaration of same local/global doesn't replace #882

Hi,

Perhaps this has been noted before.

(Using FORM 5.0.1) Declaring a local with the same name twice redefines the local. If you do it a third time (or more) it creates repeat locals that appear in print, but cannot be accessed through, for example, hide. The effects of identify statments do affect them.

For example

s x;
l result = 1+x; 
l result = 1+2*x; 
l result = 1+3*x; 
l result = 1+4*x; 
.sort 
id x=x^2; 
.sort 
Hide result; 
.sort 
print +s; 
.end 

Outputs at the print statement

 result = 
 1 + 2*x^2; 
 result = 
 1 + 3*x^2;