bug#15031: Status: 24.3.50; doc for `(cl-)defstruct' and its generated functions

[Artur Malabarba <bruce.connor.am@gmail.com>]

The following patch should implement bug#15031. It passes make check
and seems to work as intended for me. Should I apply?

From 4cac6c23214e8d1a5300dffef78b853954d79e71 Mon Sep 17 00:00:00 2001
From: Artur Malabarba <bruce.connor.am@gmail.com>
Date: Mon, 13 Apr 2015 13:13:36 +0100
Subject: [PATCH] * lisp/emacs-lisp/cl-macs.el (cl-defstruct): Implement
 docstrings.

Adding a string after a constructor's argument list will use
that string as the constructor function docstring.  If this string
is absent but the struct itself was given a docstring, use that as
the constructor's docstring
---
 lisp/emacs-lisp/cl-macs.el | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lisp/emacs-lisp/cl-macs.el b/lisp/emacs-lisp/cl-macs.el
index 41435b8..b91a310 100644
--- a/lisp/emacs-lisp/cl-macs.el
+++ b/lisp/emacs-lisp/cl-macs.el
@@ -2726,12 +2726,16 @@ non-nil value, that slot cannot be set via `setf'.
          constrs))
     (while constrs
       (let* ((name (caar constrs))
-         (args (cadr (pop constrs)))
+             (rest (cdr (pop constrs)))
+             (args (car rest))
+             (doc  (cadr rest))
          (anames (cl--arglist-args args))
          (make (cl-mapcar (function (lambda (s d) (if (memq s anames) s d)))
                 slots defaults)))
     (push `(cl-defsubst ,name
                    (&cl-defs (nil ,@descs) ,@args)
+                 ,@(if doc (list doc)
+                     (if docstring (list docstring)))
                  ,@(if (cl--safe-expr-p `(progn ,@(mapcar #'cl-second descs)))
                        '((declare (side-effect-free t))))
                  (,(or type #'vector) ,@make))
-- 
2.3.5