What do you thing about this string interpolation idea

[FeepingCreature]

On Monday, 10 December 2018 at 12:34:33 UTC, Daniel Kozak wrote:
> https://gist.github.com/run-dlang/a0dce06b873b216680df673661e4b4e6

While I'm not sure of all the details of the implementation, I 
think the use of a mixed in templated nested function to enable 
access to the local scope without string mixin is inspired. Very 
clever idea.