Format g bug ?

[Steven Schveighoffer via Digitalmars-d-learn]

On 8/9/17 4:10 PM, Temtaime wrote:
> Sorry, messed up numbers
> 
> Expected:
> 
> 3.11
> 3.11
> 3.1
> 3.1
> 
> Seems g outputs one digit less

I was bugged by this too.

It's not a bug. For the %f specifier, the number represents the number 
of digits *after* the decimal.

For the %g specifier, the number represents the number of digits *before 
and after* the decimal.

So:

writefln(`%.1g`, 31.11) -> 31

The most annoying thing is that %g is the default specifier for floating 
point.

-Steve