bug#32803: 26.1.50; cl-do: Add more literature in docstring

[Tino Calancha <tino.calancha@gmail.com>]

Severity: wishlist
X-Debbugs-Cc: Eli Zaretskii <eliz@gnu.org>

Well, the subject say everything... the docstring of cl-do/cl-do*
resembles one of my phone calls :-(

Considering their names (do), it might be useful talk a bit about
what the macros do :-)
There is also room to say something on their arguments.

We could add a link to the proper info manual node as well, as in
the `cl-loop' docstring.

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commit 026e683f999a5ad3958dc133fe2a46863a00afe8
Author: Tino Calancha <tino.calancha@gmail.com>
Date:   Sat Sep 22 23:45:31 2018 +0900

    * lisp/emacs-lisp/cl-macs.el(cl-do, cl-do*): Update docstring

diff --git a/lisp/emacs-lisp/cl-macs.el b/lisp/emacs-lisp/cl-macs.el
index 0854e665b9..20c9fa454d 100644
--- a/lisp/emacs-lisp/cl-macs.el
+++ b/lisp/emacs-lisp/cl-macs.el
@@ -1745,7 +1745,14 @@ cl--loop-build-ands
 
 ;;;###autoload
 (defmacro cl-do (steps endtest &rest body)
-  "The Common Lisp `do' loop.
+  "Bind variables and run BODY forms until END-TEST returns non-nil.
+Bind VAR initially to INIT; on successive iterations update VAR
+  with STEP form.
+On each iteration, check END-TEST before run BODY.
+Return RESULT, default nil.
+
+This is the Common Lisp `do' loop.
+For more details, see `cl-do' description in Info node `(cl) Iteration'.
 
 \(fn ((VAR INIT [STEP])...) (END-TEST [RESULT...]) BODY...)"
   (declare (indent 2)
@@ -1757,7 +1764,14 @@ cl-do
 
 ;;;###autoload
 (defmacro cl-do* (steps endtest &rest body)
-  "The Common Lisp `do*' loop.
+  "Bind variables and run BODY forms until END-TEST returns non-nil.
+Bind VAR initially to INIT; on successive iterations update VAR
+  with STEP form.
+On each iteration, check END-TEST before run BODY.
+Return RESULT, default nil.
+
+This is to `cl-do' what `let*' is to `let'.
+For more details, see `cl-do*' description in Info node `(cl) Iteration'.
 
 \(fn ((VAR INIT [STEP])...) (END-TEST [RESULT...]) BODY...)"
   (declare (indent 2) (debug cl-do))

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In GNU Emacs 26.1.50 (build 16, x86_64-pc-linux-gnu, GTK+ Version 3.22.11)
Repository revision: 41cdda22c78eb0b00612ce25cdb356dd64322fcc