Substitution for $package$ in directory name doesn't work for Windows

[kwalcock]

I'm trying to use functionality described at http://www.foundweekends.org/giter8/template.html in which a directory is named $package$. It seems to work for Linux, but it doesn't for Windows. It may be that backslashes get into the path and are misinterpreted as escape characters. Here are the steps, approximately:

> sbt new foundweekends/giter8.g8
> cd my-template-project
> cd src/main/g8
> cd src/main
> mkdir resources
> mkdir resources/$package$ # do this from the gui
> cp scala/Stub.scala resources/$package$ # do this from the gui
> cd ../..
# Add "package = one.two.three" to default.properties
> cd ../../..
> sbt
sbt:My Template Project> g8

[error] stack trace is suppressed; run last Compile / g8 for the full output
[error] (Compile / g8) org.stringtemplate.v4.compiler.STException: relative: src\main\resources\$package$\Stub.scala, toPath: D:\Users\kwa\Documents\MyData\Projects\my-template-project\target\g8, An unexpected error occurred while processing the template. Check that all literal '$' are properly escaped with '\$'
[error] Total time: 0 s, completed Aug 9, 2021 11:08:11 AM

[error] org.stringtemplate.v4.compiler.STException: relative: src\main\resources\$package$\Stub.scala, toPath: D:\Users\kwa\Documents\MyData\Projects\my-template-project\target\g8, An unexpected error occurred while processing the template. Check that all literal '$' are properly escaped with '\$'
[error]         at giter8.G8$.expandPath(g8.scala:229)
[error]         at giter8.G8$.$anonfun$apply$2(g8.scala:99)
[error]         at scala.collection.TraversableLike.$anonfun$flatMap$1(TraversableLike.scala:293)
[error]         at scala.collection.Iterator.foreach(Iterator.scala:943)
[error]         at scala.collection.Iterator.foreach$(Iterator.scala:943)
[error]         at scala.collection.AbstractIterator.foreach(Iterator.scala:1431)
[error]         at scala.collection.IterableLike.foreach(IterableLike.scala:74)
[error]         at scala.collection.IterableLike.foreach$(IterableLike.scala:73)
[error]         at scala.collection.AbstractIterable.foreach(Iterable.scala:56)
[error]         at scala.collection.TraversableLike.flatMap(TraversableLike.scala:293)
[error]         at scala.collection.TraversableLike.flatMap$(TraversableLike.scala:290)
[error]         at scala.collection.AbstractTraversable.flatMap(Traversable.scala:108)
[error]         at giter8.G8$.apply(g8.scala:97)
[error]         at giter8.Giter8Plugin$.$anonfun$baseGiter8Settings$1(Giter8Plugin.scala:56)
[error]         at scala.Function1.$anonfun$compose$1(Function1.scala:49)
[error]         at sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:62)
[error]         at sbt.std.Transform$$anon$4.work(Transform.scala:68)
[error]         at sbt.Execute.$anonfun$submit$2(Execute.scala:282)
[error]         at sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:23)
[error]         at sbt.Execute.work(Execute.scala:291)
[error]         at sbt.Execute.$anonfun$submit$1(Execute.scala:282)
[error]         at sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:265)
[error]         at sbt.CompletionService$$anon$2.call(CompletionService.scala:64)
[error]         at java.util.concurrent.FutureTask.run(FutureTask.java:266)
[error]         at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
[error]         at java.util.concurrent.FutureTask.run(FutureTask.java:266)
[error]         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
[error]         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
[error]         at java.lang.Thread.run(Thread.java:748)
[error] (Compile / g8) org.stringtemplate.v4.compiler.STException: relative: src\main\resources\$package$\Stub.scala, toPath: D:\Users\kwa\Documents\MyData\Projects\my-template-project\target\g8, An unexpected error occurred while processing the template. Check that all literal '$' are properly escaped with '\$'