python.el: Native readline completion.

This commit adds native readline completion that fallbacks to the old
mechanism when it cannot be used for the current interpreter.

* lisp/progmodes/python.el (python-shell-completion-native-disabled-interpreters)
(python-shell-completion-native-enable)
(python-shell-completion-native-output-timeout): New defcustoms.
(python-shell-completion-native-interpreter-disabled-p)
(python-shell-completion-native-try)
(python-shell-completion-native-setup)
(python-shell-completion-native-turn-off)
(python-shell-completion-native-turn-on)
(python-shell-completion-native-turn-on-maybe)
(python-shell-completion-native-turn-on-maybe-with-msg)
(python-shell-completion-native-toggle): New functions.
(python-shell-completion-native-get-completions): New function.
(python-shell-completion-at-point): Use it.

* test/automated/python-tests.el
(python-shell-completion-native-interpreter-disabled-p-1): New
test.

1 files changed, 6 insertions, 0 deletions

diff --git a/test/ChangeLog b/test/ChangeLog
index 79354f29ff9..2ea325432d0 100644
--- a/test/ChangeLog
+++ b/test/ChangeLog
@@ -4,6 +4,12 @@
 
 2014-12-27  Fabián Ezequiel Gallina  <fgallina@gnu.org>
 
+        * automated/python-tests.el
+        (python-shell-completion-native-interpreter-disabled-p-1): New
+        test.
+
+2014-12-27  Fabián Ezequiel Gallina  <fgallina@gnu.org>
+
         * automated/python-tests.el (python-shell-get-or-create-process-1)
         (python-shell-get-or-create-process-2)
         (python-shell-get-or-create-process-3): Remove tests.