Fix python docstring auto-fill (Bug#36056)

* lisp/progmodes/python.el (python-mode): Set
fill-indent-according-to-mode locally to t.  This lets auto-fill do
the right thing when auto-filling inside a docstring.  The default was
to nil on 2001-11-25 "(fill-indent-according-to-mode): Default to nil"
with the comment that it "screws up CC-mode's filling tricks".  But
presumably it shouldn't be a problem for python-mode.
* test/lisp/progmodes/python-tests.el (python-auto-fill-docstring):
New test.

1 files changed, 1 insertions, 0 deletions

diff --git a/lisp/progmodes/python.el b/lisp/progmodes/python.el
index 188bc973d99..e1f9a33a691 100644
--- a/lisp/progmodes/python.el
+++ b/lisp/progmodes/python.el
@@ -5379,6 +5379,7 @@ REPORT-FN is Flymake's callback function."
   (set (make-local-variable 'paragraph-start) "\\s-*$")
   (set (make-local-variable 'fill-paragraph-function)
        #'python-fill-paragraph)
+  (set (make-local-variable 'fill-indent-according-to-mode) t) ; Bug#36056.
 
   (set (make-local-variable 'beginning-of-defun-function)
        #'python-nav-beginning-of-defun)