bug#4117: 23.1; isearch + isearch-allow-scroll loses shift

[Juri Linkov]

>> It's interesting that after loading s-region.el, your reported case
>> works correctly without fixes.
>>
>> So it seems the current core shift-selection is not the exact
>> re-implementation of s-region.el.
>
> I still believe that the problem is somewhere in how
> `isearch-other-meta-char' restores the key.  FWIW, here is my hack; I
> can't even explain how it works since I was basically guessing my way
> trying to get the stupid thing to work.
>
> At least in v22, this would cause the key that is used to exit isearch
> to be replayed twice -- for example, using `C-x 2' would happen twice.
> It just happens that I'm personally much more likely to shift-arrow my
> way out of isearch than I am to splitting the window.

Could you try the following hack:

Index: lisp/isearch.el
===================================================================
RCS file: /sources/emacs/emacs/lisp/isearch.el,v
retrieving revision 1.345
diff -u -r1.345 isearch.el
--- lisp/isearch.el     14 Feb 2009 09:04:46 -0000      1.345
+++ lisp/isearch.el     17 Aug 2009 00:47:38 -0000
@@ -1900,6 +1905,12 @@
           ((and isearch-allow-scroll
                 (progn (setq key (isearch-reread-key-sequence-naturally 
keylist))
                        (setq keylist (listify-key-sequence key))
+                       (when this-command-keys-shift-translated
+                         (setq keylist (list
+                                        (event-convert-list
+                                         (append (cons 'shift (event-modifiers 
keylist))
+                                                 (list (event-basic-type 
keylist))))))
+                         (setq this-command-keys-shift-translated nil))
                        (setq main-event (aref key 0))
                        (setq scroll-command (isearch-lookup-scroll-key key))))
            ;; From this point onwards, KEY, KEYLIST and MAIN-EVENT hold a

-- 
Juri Linkov
http://www.jurta.org/emacs/