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, 7 insertions, 0 deletions

diff --git a/test/automated/python-tests.el b/test/automated/python-tests.el
index 90fa79ee966..ca43c45ac5e 100644
--- a/test/automated/python-tests.el
+++ b/test/automated/python-tests.el
@@ -2584,6 +2584,13 @@ class Foo(models.Model):
 
 ;;; Shell completion
 
+(ert-deftest python-shell-completion-native-interpreter-disabled-p-1 ()
+  (let* ((python-shell-completion-native-disabled-interpreters (list "pypy"))
+         (python-shell-interpreter "/some/path/to/bin/pypy"))
+    (should (python-shell-completion-native-interpreter-disabled-p))))
+
+
+
 
 ;;; PDB Track integration