Wrap around the search on typing a letter (bug#56535)

* doc/emacs/search.texi (Repeat Isearch): Improve values no/no-ding.

* lisp/isearch.el (isearch-search-and-update): Try to repeat the search
on an error when isearch-wrap-pause is no/no-ding.

doc/emacs/search.texi

@@ -228,8 +228,9 @@ customizing the @code{isearch-wrap-pause} user option.  If it is
 @code{t} (the default), signal an error.  (Repeating the search will
 wrap around.)  If @code{no}, issue a @code{ding} and wrap immediately
 after reaching the last match.  If @code{no-ding}, wrap immediately,
-but don't @code{ding}.  Finally, if @code{nil}, never wrap, but just
-stop at the last match.
+but don't @code{ding}.  With the values @code{no} and @code{no-ding}
+the search will try to wrap around also on typing a character.
+Finally, if @code{nil}, never wrap, but just stop at the last match.
 
 @cindex search ring
 @findex isearch-ring-advance

etc/NEWS

@@ -1457,6 +1457,11 @@ outside the echo area, Emacs will, by default, end the Isearch and
 yank the text at mouse cursor.  But if 'mouse-yank-at-point' is
 non-nil, the text will now be added to the Isearch instead.
 
++++
+*** Changes for values 'no' and 'no-ding' of 'isearch-wrap-pause'.
+Now with these values the search will wrap around not only on repeating
+with 'C-s C-s', but also after typing a character.
+
 +++
 *** New user option 'char-fold-override'.
 Non-nil means that the default definitions of equivalent characters

lisp/isearch.el

@@ -2838,7 +2838,9 @@ The command accepts Unicode names like \"smiling face\" or
 			    isearch-barrier
 			    (1+ isearch-other-end)))))
       (isearch-search)
-      ))
+      (when (and (memq isearch-wrap-pause '(no no-ding))
+                 (not isearch-success))
+        (isearch-repeat (if isearch-forward 'forward 'backward)))))
   (isearch-push-state)
   (if isearch-op-fun (funcall isearch-op-fun))
   (isearch-update))