VirtualDirectoryClassPath

[AIMMOTH]

Hello, using VirtualDirectoryClassPath it fails in Windows. In version 2.13.9 it seems to be updated. Will dotty be updated too?

Dotty VirtualDirectoryClassPath:28 https://github.com/lampepfl/dotty/blob/64f8c806cbb64f7f30f3930cf7588b83df6f6d81/compiler/src/dotty/tools/dotc/classpath/VirtualDirectoryClassPath.scala#L28

2.13.9 VirtualDirectoryClassPath:28 https://github.com/scala/scala/blob/986dcc160aab85298f6cab0bf8dd0345497cdc01/src/compiler/scala/tools/nsc/classpath/VirtualDirectoryClassPath.scala#L28

Test:

    class MyVirtualDirectoryClassPath(dir: VirtualDirectory) extends VirtualDirectoryClassPath(dir) {
      override def getSubDir(path: String) = super.getSubDir(path)
    }

    test("Virtual directory") {
      val directory = new VirtualDirectory("in memory", None)
      val virtualDirectory = new MyVirtualDirectoryClassPath(directory)

      virtualDirectory.getSubDir("scala\\")
    }

[nicolasstucki]

@AIMMOTH did you encounter the same issue in Scala 3?

We might have patched this already with https://github.com/lampepfl/dotty/blob/main/compiler/src/dotty/tools/dotc/classpath/VirtualDirectoryClassPath.scala#L13-L14

[AIMMOTH]

Hello, I'm sorry I don't understand your suggestion. I tried to update to 3.5.0 but have same issue

java.util.regex.PatternSyntaxException: Unescaped trailing backslash near index 1
\
	at java.base/java.util.regex.Pattern.error(Pattern.java:2204) ~[na:na]
	at java.base/java.util.regex.Pattern.compile(Pattern.java:1951) ~[na:na]
	at java.base/java.util.regex.Pattern.<init>(Pattern.java:1576) ~[na:na]
	at java.base/java.util.regex.Pattern.compile(Pattern.java:1101) ~[na:na]
	at java.base/java.lang.String.split(String.java:3352) ~[na:na]
	at java.base/java.lang.String.split(String.java:3443) ~[na:na]
	at dotty.tools.dotc.classpath.VirtualDirectoryClassPath.getSubDir(VirtualDirectoryClassPath.scala:28) ~[scala3-compiler_3-3.5.0.jar:3.5.0]