Fix - scripts accept as piped inout (#144)

Author: lwronski

modules/build/src/main/scala/scala/build/Inputs.scala

@@ -233,11 +233,12 @@ object Inputs {
         lazy val dir       = path / os.up
         lazy val subPath   = path.subRelativeTo(dir)
         lazy val stdinOpt0 = stdinOpt
-        val isStdin = (arg == "-" || arg == "-.scala" || arg == "_" || arg == "_.scala") &&
+        val isStdin = (arg == "-.scala" || arg == "_" || arg == "_.scala") &&
           stdinOpt0.nonEmpty
         if (isStdin) Right(Seq(VirtualScalaFile(stdinOpt0.get, "<stdin>")))
-        else if ((arg == "-.sc" || arg == "_.sc") && stdinOpt0.nonEmpty)
-          Right(Seq(VirtualScript(stdinOpt0.get, "<stdin>", os.sub / "stdin.sc")))
+        else if ((arg == "-" || arg == "-.sc" || arg == "_.sc") && stdinOpt0.nonEmpty) {
+          Right(Seq(VirtualScript(stdinOpt0.get, "stdin", os.sub / "stdin.sc")))
+        }
         else if (arg.contains("://")) {
           val url =
             if (githubGistsArchiveRegex.findFirstMatchIn(arg).nonEmpty) s"$arg/download" else arg

modules/integration/src/test/scala/scala/cli/integration/RunTestDefinitions.scala

@@ -611,10 +611,21 @@ abstract class RunTestDefinitions(val scalaVersionOpt: Option[String])
     }
   }
 
-  if (!Properties.isWin)
+  if (!Properties.isWin) {
     test("piping") {
       piping()
     }
+    test("Scripts accepted as piped input") {
+      val message = "Hello"
+      val input   = s"println(\"$message\")"
+      emptyInputs.fromRoot { root =>
+        val output = os.proc(TestUtil.cli, "-", extraOptions)
+          .call(cwd = root, stdin = input)
+          .out.text.trim
+        expect(output == message)
+      }
+    }
+  }
 
   def fd(): Unit = {
     emptyInputs.fromRoot { root =>