Phobos' slow descent into madness

[MoonlightSentinel]

On Friday, 7 May 2021 at 20:47:57 UTC, Andrei Alexandrescu wrote:
> In turn, format turns out to be used, often gratuitously, in 
> very, very many places during compilation, particularly in 
> std.traits itself (as an aside: format("%s[]")? Really? What 
> happened with good old string concatenation?).

Except that string concatenation doesn't work with callback / 
output range based `toString` implementations.