Just another example of missing string interpolation

[Walter Bright]

On 10/12/2023 6:39 AM, Andrea Fontana wrote:
> ```
> stderr.write("${clear}\r{$white}Progress:${clear}${progress}% 
> \t${white}Speed:${clear} ${curSpeed} ${unit}");
> ```


With DIP1027:

```
stderr.write("$clear\r$(white)Progress:$clear$progress%
\t$(white)Speed:$clear $curSpeed $unit");
```

If it's a simple identifier, the { } are not necessary.

https://github.com/dlang/DIPs/blob/master/DIPs/rejected/DIP1027.md#description