Proposed fix to bug #17

sourcecode/shared/src/main/scala/sourcecode/SourceContext.scala

@@ -128,7 +128,12 @@ object Impls{
   def text[T: c.WeakTypeTag](c: Compat.Context)(v: c.Expr[T]): c.Expr[sourcecode.Text[T]] = {
     import c.universe._
     val fileContent = new String(v.tree.pos.source.content)
-    val start = v.tree.collect{case tree => tree.pos.startOrPoint}.min
+    val start = v.tree.collect {
+      case treeVal => treeVal.pos match {
+        case NoPosition ⇒ Int.MaxValue
+        case p ⇒ p.startOrPoint
+      }
+    }.min
     val g = c.asInstanceOf[reflect.macros.runtime.Context].global
     val parser = g.newUnitParser(fileContent.drop(start))
     parser.expr()
@@ -185,4 +190,4 @@ object Impls{
     }.mkString.dropRight(1)
     c.Expr[T](q"""${c.prefix}($renderedPath)""")
   }
-}
+}

sourcecode/shared/src/test/scala/sourcecode/Regressions.scala

@@ -0,0 +1,11 @@
+package sourcecode
+
+object Regressions {
+  def bug17() = {
+    val text = sourcecode.Text(Seq(1).map(_+1))
+    assert(text.source == "Seq(1).map(_+1)")
+  }
+  def main() = {
+    bug17()
+  }
+}

sourcecode/shared/src/test/scala/sourcecode/Tests.scala

@@ -30,6 +30,8 @@ object Tests{
     DebugName.main()
     println("================Debug Lite================")
     DebugLite.main()
+    println("================Regressions===============")
+    Regressions.main()
     println("================Test Ended================")
   }
 }