From 1e66c8af402176e9f1b5f3fbdbf5f796fec79079 Mon Sep 17 00:00:00 2001
From: kobarity
Date: Sat, 28 May 2022 18:51:01 +0200
Subject: Fix Python Hideshow problem with backslash escaped newlines

* lisp/progmodes/python.el (python-rx)
(python-nav-beginning-of-defun-regexp): Allow
python-nav-*-defun to handle backslash escaped newlines
(bug#55690).
---
 lisp/progmodes/python.el | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'lisp/progmodes/python.el')

diff --git a/lisp/progmodes/python.el b/lisp/progmodes/python.el
index 9adbb82abf4..c2483436fe9 100644
--- a/lisp/progmodes/python.el
+++ b/lisp/progmodes/python.el
@@ -359,7 +359,8 @@
 (defmacro python-rx (&rest regexps)
   "Python mode specialized rx macro.
 This variant of `rx' supports common Python named REGEXPS."
-  `(rx-let ((block-start       (seq symbol-start
+  `(rx-let ((sp-bsnl (or space (and ?\\ ?\n)))
+            (block-start       (seq symbol-start
                                     (or "def" "class" "if" "elif" "else" "try"
                                         "except" "finally" "for" "while" "with"
                                         ;; Python 3.10+ PEP634
@@ -1439,7 +1440,7 @@ marks the next defun after the ones already marked."
                  function))
 
 (defvar python-nav-beginning-of-defun-regexp
-  (python-rx line-start (* space) defun (+ space) (group symbol-name))
+  (python-rx line-start (* space) defun (+ sp-bsnl) (group symbol-name))
   "Regexp matching class or function definition.
 The name of the defun should be grouped so it can be retrieved
 via `match-string'.")
-- 
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