changelog.sc

#!/usr/local/bin/amm

import ammonite.ops._
import ammonite.ops.ImplicitWd._

val issue = "#(\\d+)".r

@main def main(
    tag: String = %%("git", "describe", "--abbrev=0", "--tags").out.trim) = {

  %%('git, 'log, "--pretty=oneline", s"$tag...HEAD")
    .out
    .lines
    .groupBy(x => issue.findAllIn(x).toSeq)
    .foreach {
        case (Nil, xs) =>
          println("_")
          xs.foreach(s => println(s"  $s"))
        case (issues, xs) =>
          println(issues.mkString(", "))
          xs.foreach(s => println(s"  $s"))
    }
}