Fix fill-paragraph in python docstrings (Bug#36056)

* lisp/progmodes/python.el (python-do-auto-fill): New function.
(python-mode): Set it as normal-auto-fill-function, and don't set
fill-indent-according-to-mode.  Having the latter set during
fill-paragraph gives wrongs result, because python-indent-line doesn't
remove indentation added by filling.
* test/lisp/progmodes/python-tests.el (python-fill-docstring): New
test.

1 files changed, 12 insertions, 1 deletions

diff --git a/test/lisp/progmodes/python-tests.el b/test/lisp/progmodes/python-tests.el
index b1cf7e8806a..c5ad1dfb862 100644
--- a/test/lisp/progmodes/python-tests.el
+++ b/test/lisp/progmodes/python-tests.el
@@ -1351,7 +1351,7 @@ this is an arbitrarily
                       expected)))))
 
 
-;;; Autofill
+;;; Filling
 
 (ert-deftest python-auto-fill-docstring ()
   (python-tests-with-temp-buffer
@@ -1368,6 +1368,17 @@ def some_function(arg1,
      (forward-line 1)
      (should (= docindent (current-indentation))))))
 
+(ert-deftest python-fill-docstring ()
+  (python-tests-with-temp-buffer
+   "\
+r'''aaa
+
+this is a test this is a test this is a test this is a test this is a test this is a test.
+'''"
+   (search-forward "test.")
+   (fill-paragraph)
+   (should (= (current-indentation) 0))))
+
 
 ;;; Mark