bug#37808: 27.0.50; [PATCH] python-shell-completion-at-point: respect simple-operator

[Andrii Kolomoiets <andreyk.mad@gmail.com>]

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1. emacs -Q
2. M-x run-python
(Now in *Python* buffer)
3. foo=1<RET>
4. bar=fo<TAB>

"No match" echoed in minibuffer but completion list is expected.

Attached patch make python-shell-completion-at-point also stop on
simple-operator while parsing input.

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From 6b83e12f0041379d35a7c8fc4a4419f0eb264211 Mon Sep 17 00:00:00 2001
From: Andrii Kolomoiets <andreyk.mad@gmail.com>
Date: Fri, 18 Oct 2019 16:04:32 +0300
Subject: [PATCH] python-shell-completion-at-point: respect simple-operator

* lisp/progmodes/python.el
(python-shell-completion-at-point): Also stop on simple-operator
while parsing input.
---
 lisp/progmodes/python.el | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lisp/progmodes/python.el b/lisp/progmodes/python.el
index b168b62c29..4568a7f19b 100644
--- a/lisp/progmodes/python.el
+++ b/lisp/progmodes/python.el
@@ -3674,7 +3674,7 @@ python-shell-completion-at-point
           (save-excursion
             (if (not (re-search-backward
                       (python-rx
-                       (or whitespace open-paren close-paren string-delimiter))
+                       (or whitespace open-paren close-paren string-delimiter simple-operator))
                       line-start
                       t 1))
                 line-start
-- 
2.15.1