DIP 1027---String Interpolation---Format Assessment

[aliak]

On Wednesday, 26 February 2020 at 09:45:55 UTC, Walter Bright 
wrote:
> On 2/25/2020 1:36 AM, aliak wrote:
>> This may have already been answered in the other threads, but 
>> I was just wondering if anyone managed to propose a way to 
>> avoid this scenario with DIP1027?
>> 
>> void f(string s, int i = 0);
>> f(i"hello $a"); // silent unwanted bahviour.
>> 
>> ?
>
> It is lowered to:
>
>   f("hello %s", a);
>
> as designed. I don't know what's unwanted about it.

It's unwanted because the lowering calls a function that was not 
intended with values that were unintended. You can take this 
article: https://dlang.org/articles/hijack.html and replace it 
with that lowering behaviour, and have the exact same story.

Also unwanted because of what string interpolation means (ref 
wikipedia and all other languages).