Thank you Eli for the review,

In data giovedì 13 marzo 2025 10:57:41 Ora standard dell’Europa centrale, Eli 
Zaretskii ha scritto:
> > From: Vincenzo Pupillo <v.pupillo@gmail.com>
> > Cc: 76789@debbugs.gnu.org
> > Date: Tue, 11 Mar 2025 16:41:22 +0100
> > 
> > Thank you Eli.
> > In this updated version of the patch I corrected what you indicated and
> > added something in the manual, rather short :-(.
> 
> Thanks.  I meant to install it, but building Emacs after applying the
> changes yields warnings:
> 
>   In speedbar-frame-or-window:
>   speedbar.el:1009:2: Warning: docstring has wrong usage of unescaped single
> quotes (use \=' or different quoting such as `...')
> 
>   In speedbar-window-mode:
>   speedbar.el:1045:13: Warning: assignment to free variable
> `speedbar-select-frame-method'
> 
>   In speedbar-window--buffer-live-p:
>   speedbar.el:1079:11: Warning: defsubst `speedbar-window--buffer-live-p'
> was used before it was defined
> 
>   In speedbar-window--width:
>   speedbar.el:1113:11: Warning: defsubst `speedbar-window--width' was used
> before it was defined
> 
>   In speedbar-current-frame:
>   speedbar.el:1135:11: Warning: defsubst `speedbar-current-frame' was used
> before it was defined
> 
> Please fix those.

Done

> 
> Also, here:
> > +@cindex @code{speedbar-window}
> > +Optionally, the speedbar can be displayed as a window, splitting the
> > +windows of the selected frame, in both terminal and graphics modes.
> > +Only one speedbar window can be open at a time.
> > +
> > +It is possible to switch from displaying the speedbar in a separate
> > +frame to displaying it in a window and vice versa simply by using the
> > +@kbd{M-x speedbar-window @key{RET}} or
> > +@kbd{M-x speedbar-frame@key{RET}} command.
> 
> please mention and index the user option you added.
> 
> > +** Speedbar
> > +
> > +---
> > +*** The new command 'speedbar-window-mode' opens Speedbar in a window
> > instead +of a frame.
> > +
> > +*** New command 'speedbar-window' is an alias for 'speedbar-window-mode'.
> > +'
> > +*** The new user option 'speedbar-prefer-window', tells 'speedbar' to
> > open
> > +a side window instead of a frame.
> > +
> > +*** 'speedbar-easymenu-definition-trailer' is now a function.
> > +
> 
> These NEWS entries should be marked with "+++", since this is now
> documented in the relevant manuals.

Done. 

The new version of the patch is attached.

Vincenzo