scala/scala — pull request #2793 by som-snytt (2013-08-03 08:08:00+00:00)
Title: SI-7715 Etapolator s"$_"

Allows `vs map s"How many? $_"`.

Or `vs zip vs map s"How many? $_ by $_".tupled`.

And `s"How many? $_ by $_ by $_"("one","two","three")`.

In a pattern,

```
scala> val rx"$_ by ${I(b)}" = "2 by 4"
b: Int = 4
```