X-Git-Url: https://git.distorted.org.uk/~mdw/sod/blobdiff_plain/52a79ab8b310a785f2c2f1a11069f3a5ad53810c..64d1ecf751f542782b5ffb9c9469c70d92f423de:/src/module-impl.lisp

diff --git a/src/module-impl.lisp b/src/module-impl.lisp
index 9e74b27..fe6b545 100644
--- a/src/module-impl.lisp
+++ b/src/module-impl.lisp
@@ -167,7 +167,8 @@
 	 (line (file-location-line location))
 	 (filename (file-location-filename location)))
     (cond (line
-	   (format stream "~&#line ~D~@[ ~S~]~%" line filename)
+	   (when (typep stream 'position-aware-stream)
+	     (format stream "~&#line ~D~@[ ~S~]~%" line filename))
 	   (funcall thunk)
 	   (when (typep stream 'position-aware-stream)
 	     (fresh-line stream)