Re: Why is sformat and formattedWrite (appender) allocating GC mem here?

[James Blachly via Digitalmars-d-learn]

On 8/31/19 5:12 PM, ag0aep6g wrote:
I've made a pull request to get rid of those allocations:
https://github.com/dlang/phobos/pull/7163

Wonderful!
For my own learning, why was a unittest to ensure no GC added to sformat 
instead of a @nogc annotation?