Set PYTHONUNBUFFERED on shell startup.

Fixes: debbugs:18595

* lisp/progmodes/python.el (python-shell-unbuffered): New var.
(python-shell-calculate-process-environment): Use it.

* test/automated/python-tests.el
(python-shell-calculate-process-environment-4)
(python-shell-calculate-process-environment-5): New tests.
(python-shell-make-comint-3): Use file-equal-p.
(python-shell-get-or-create-process-1)
(python-shell-get-or-create-process-2)
(python-shell-get-or-create-process-3): Fix interpreter for
Windows.

1 files changed, 7 insertions, 0 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 0f16eabdc03..e59c3910fd7 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,10 @@
+2014-11-22  Fabián Ezequiel Gallina  <fgallina@gnu.org>
+
+        Set PYTHONUNBUFFERED on shell startup.
+
+        * progmodes/python.el (python-shell-unbuffered): New var.
+        (python-shell-calculate-process-environment): Use it.
+
 2014-11-22  Michael Albinus  <michael.albinus@gmx.de>
 
         * net/tramp.el (tramp-action-password): Clean password on subsequent