Improve message since sbtVersion may vary for different projects

integration-test/src/test/scala/RunnerTest.scala

@@ -79,4 +79,14 @@ object SbtRunnerTest extends SimpleTestSuite with PowerAssertions {
     ()
   }
 
+  test("sbt -V|-version should print sbtVersion") {
+    val out = sbtProcessWithOpts("-version", "", "").!!.trim
+    val expectedVersion = "^sbt version in this project: \\d\\.\\d+\\.\\d+\\S*$"
+    assert(out.matches(expectedVersion))
+
+    val out2 = sbtProcessWithOpts("-V", "", "").!!.trim
+    assert(out2.matches(expectedVersion))
+    ()
+  }
+
 }

src/universal/bin/sbt

@@ -378,7 +378,7 @@ run() {
 
   if [[ $print_sbt_version ]]; then
     # print sbtVersion
-    execRunner "$java_cmd" -jar "$sbt_jar" "sbtVersion" | tail -1
+    execRunner "$java_cmd" -jar "$sbt_jar" "sbtVersion" | tail -1 | sed -e 's/\[info\]/sbt version in this project:/g'
   else
     # run sbt
     execRunner "$java_cmd" \