[Issue 23999] literal suffixes dont mix well with template instantiations

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=23999

mhh <maxhaton at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |maxhaton at gmail.com

--- Comment #12 from mhh <maxhaton at gmail.com> ---
Why is this impossible to express? You can write a new rule to match it and
then mark it illegal if nothing else. (That and the grammar is not the whole).

I think it's worth banning this, C does for example.

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