WX-1145 Fix minor regression introduced in WDL 1.1 foundation (#7153)

languageFactories/language-factory-core/src/main/scala/cromwell/languages/util/LanguageFactoryUtil.scala

@@ -94,7 +94,7 @@ object LanguageFactoryUtil {
     }
 
     val firstCodeLine = fileWithoutInitialWhitespace.headOption.map(_.dropWhile(_.isWhitespace))
-    firstCodeLine.exists { line => startsWithOptions.contains(line) }
+    firstCodeLine.exists { line => startsWithOptions.contains(line.trim) }
   }
 
   def chooseFactory(workflowSource: WorkflowSource, wsfc: WorkflowSourceFilesCollection): ErrorOr[LanguageFactory] = {

languageFactories/language-factory-core/src/test/scala/cromwell/languages/util/LooksParseableSpec.scala

@@ -0,0 +1,81 @@
+package cromwell.languages.util
+
+import org.scalatest.flatspec.AnyFlatSpec
+import org.scalatest.matchers.should.Matchers
+
+class LooksParseableSpec extends AnyFlatSpec with Matchers {
+  behavior of "simpleLooksParseable"
+
+  it should "work with `version 1.0` followed by whitespace" in {
+
+    val source =
+      """
+        |version 1.0              
+        |# Programmer warning: make sure your editor does not trim the whitespace in the line above.
+        |""".stripMargin
+
+    LanguageFactoryUtil.simpleLooksParseable(List("version 1.0"), List("#"))(source) shouldBe true
+  }
+
+  it should "work with `version 1.0` preceded by whitespace" in {
+
+    val source =
+      """
+        |              version 1.0
+        |# Programmer warning: make sure your editor does not trim the whitespace in the line above.
+        |""".stripMargin
+
+    LanguageFactoryUtil.simpleLooksParseable(List("version 1.0"), List("#"))(source) shouldBe true
+  }
+
+  it should "work with `version 1.0` surrounded by whitespace" in {
+
+    val source =
+      """
+        |              version 1.0              
+        |# Programmer warning: make sure your editor does not trim the whitespace in the line above.
+        |""".stripMargin
+
+    LanguageFactoryUtil.simpleLooksParseable(List("version 1.0"), List("#"))(source) shouldBe true
+  }
+
+  it should "work with `version 1.0` surrounded by whitespace on all sides" in {
+
+    val source =
+      """
+        |              
+        |              version 1.0              
+        |              
+        |# Programmer warning: make sure your editor does not trim the whitespace in the line above.
+        |""".stripMargin
+
+    LanguageFactoryUtil.simpleLooksParseable(List("version 1.0"), List("#"))(source) shouldBe true
+  }
+
+  // This test technically contradicts the spec [0] but there is better hope of receiving a useful
+  // error if we try & fail to parse as 1.0, than if we fall back to the server default, `draft-2`
+  // > From draft-3 forward, the first line of all WDL files must be a version statement
+  // [0] https://github.com/openwdl/wdl/blob/main/versions/1.0/SPEC.md#versioning
+  it should "work with `version 1.0` surrounded by comments" in {
+
+    val source =
+      """
+        |# My WDL does a cool thing
+        |version 1.0
+        |# Here we go...
+        |""".stripMargin
+
+    LanguageFactoryUtil.simpleLooksParseable(List("version 1.0"), List("#"))(source) shouldBe true
+  }
+
+  it should "reject Chris's idea of a version declaration" in {
+
+    val source =
+      """
+        |# Thank goodness this WDL is not version 1.1!
+        |""".stripMargin
+
+    LanguageFactoryUtil.simpleLooksParseable(List("version 1.0"), List("#"))(source) shouldBe false
+  }
+
+}