Fix Phobos dependencies on autodecoding

[dangbinghoo]

On Tuesday, 13 August 2019 at 16:51:57 UTC, jmh530 wrote:
> On Tuesday, 13 August 2019 at 16:36:16 UTC, H. S. Teoh wrote:
>> [snip]
>>
>> The location of the acute accent on the second line is wrong.
>>
>>
>> T
>
> I'm still confused...
>
> What I was first confused about was that the second line of the 
> expected output looks exactly the same as the second line of 
> the actual output. However, you seemed to have indicated that 
> is a problem. From your follow-up post, I'm still confused 
> because the accent seems to be on the "e" on both of them. 
> Isn't that where it's supposed to be?

we can take Chinese char. as an example, it's clear:

```
  writeln("汉语&中国🇨🇳".retro);
  writeln("汉字🐠中国🇨🇳".retro);
```

expected:

🇨🇳国中&语汉
🇨🇳国中🐠字汉

actual:
🇳🇨国中&语汉
🇳🇨国中🐠字汉


--
binghoo dang