Enhance terpri to allow conditionally output a newline

* doc/lispref/streams.texi (Output Functions): Document new argument ENSURE to
terpri.

* doc/misc/cl.texi (Porting Common Lisp): Remove parse-integer.

* lisp/emacs-lisp/cl-extra.el (cl-fresh-line): New function.

* src/keymap.c (describe_vector_princ):
* src/keyboard.c (Fcommand_error_default_function): Adapt to change to
Fterpri.

* src/print.c (printchar_stdout_last): Declare.
(printchar): Record the last char written to stdout.
(Fterpri): Add optional argument ENSURE.

* test/automated/print-tests.el: New file.
(terpri): Tests for terpri.  (Bug#18652)

1 files changed, 1 insertions, 1 deletions

diff --git a/src/keymap.c b/src/keymap.c
index fa2d4e942b8..d633bdcaae7 100644
--- a/src/keymap.c
+++ b/src/keymap.c
@@ -3364,7 +3364,7 @@ describe_vector_princ (Lisp_Object elt, Lisp_Object fun)
 {
   Findent_to (make_number (16), make_number (1));
   call1 (fun, elt);
-  Fterpri (Qnil);
+  Fterpri (Qnil, Qnil);
 }
 
 DEFUN ("describe-vector", Fdescribe_vector, Sdescribe_vector, 1, 2, 0,