Compiler bug?

[IM]

On Friday, 29 December 2017 at 07:55:08 UTC, Daniel Kozak wrote:
> But maybe you can propose cjange from ref R r to auto ref R r
>

If this will make it work with both lvalues and rvalues, then 
yes, this would be a nice fix. No need to force users to cache 
string line = readln(); first and then use it with 
formattedRead().

> https://dlang.org/spec/template.html#auto-ref-parameters
>
> On Fri, Dec 29, 2017 at 8:50 AM, Daniel Kozak 
> <kozzi11 at gmail.com> wrote:
>
>> No it is not a bug, because
>>  uint formattedRead(alias fmt, R, S...)(ref R r, auto ref S 
>> args)
>> could not match (there is a ref R r) so in your first example 
>> you dont
>> have lvalue but rvalue
>>