Proposal: for/then/else statement

[bearophile]

Linden Krouse:

> "then" and "else could be changed to something more 
> descriptive, they were just the first keywords that came to 
> mind.

I find the "else" of "for" sometimes handy in Python, but using 
"else" for "unbroken" is not good enough. A more descriptive 
keyword is kind of needed here. But I don't think Walter wants to 
add new keywords to D now.

Bye,
bearophile