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Re: Problem with second-sel.el

From: Nordlöw
Subject: Re: Problem with second-sel.el
Date: Wed, 20 Aug 2008 03:27:44 -0700 (PDT)
User-agent: G2/1.0

On 19 Aug, 17:45, "Drew Adams" <address@hidden> wrote:
> > I am trying to trace an annoying bug regarding secondary selection.
> > The problem occurs on a number of places in my settings if I have
> > second-sel.el in my load path otherwise it does not.
> > For example the following happens when nxhtml is loaded:
> > Debugger entered--Lisp error: (error "No `SECONDARY' selection")
> >   x-get-selection-internal(SECONDARY STRING)
> >   x-get-selection(SECONDARY)
> >   (and (fboundp (quote x-get-selection)) (x-get-selection (quote
> > SECONDARY)) (not buffer-read-only))
> >   message("Loading %s (source)...done"
> > "/home/per/pnw/emacs/nxhtml/etc/
> > schema/schema-path-patch.el")
> >   load-with-code-conversion("/home/per/pnw/emacs/nxhtml/etc/schema/
> > schema-path-patch.el" "/home/per/pnw/emacs/nxhtml/etc/schema/schema-
> > path-patch.el" nil nil)
> >   load("/home/per/pnw/emacs/nxhtml/etc/schema/schema-path-patch.el"
> > nil nil t)
> >   load-file("/home/per/pnw/emacs/nxhtml/etc/schema/schema-path-
> > patch.el")
> > Because of this I have deactivated second-sel.el for now; Am I missing
> > out on something, Drew Adams?
> Hi Per,
> We can take this off list to try to debug your problem.
> This code: (and (fboundp (quote x-get-selection)) (x-get-selection (quote> 
> SECONDARY)) (not buffer-read-only)) is not from second-sel.el. It is no doubt
> from menu-bar+.el:
> (when (fboundp 'yank-secondary)
>   (define-key-after menu-bar-edit-menu [yank-secondary] ; In `second-sel.el'
>     '(menu-item "Paste Secondary" yank-secondary
>       :help "Paste secondary selection."
>       :enable
>       (and (fboundp 'x-get-selection) (x-get-selection 'SECONDARY)
>            (not buffer-read-only))
>       :keys "\\[yank-secondary-or-swap-w-region]")
>     'paste))
> Library second-sel.el has similar, but not identical error message: "No
> secondary selection" (notice the lowercase and lack of quotes). This message
> appears when you try to use the secondary selection but there is none.
> My guess is this:
> 1. The :enable code is run when the menu-bar is created.
> 2. (fboundp 'x-get-selection) succeeds on your platform.
> 3. (x-get-selection on your platform raises an error if there is no secondary
> selection. It should not, I believe - it should return nil. On Windows, at
> least, it returns nil.
> 4. This occurs only when second-sel.el is loaded, because of the (fboundp
> 'yank-secondary) test at the beginning of the :enable sexp.
> Try just evaluating M-: (x-get-selection 'SECONDARY) in Emacs -Q (with no
> secondary). Does it raise an error or return nil? If the former, then I'd
> suggest that you file an Emacs bug.
> Experiment a bit more and contact me off list, and we'll see what we can do. 
> If
> you just want a workaround for now, just remove the :enable sexp from
> menu-bar+.el.

You are right! Evaluating the expression

   (x-get-selection 'SECONDARY)

does raise an error in emacs -Q on my Ubuntu Linux (using my daily
emacs CVS-build)! I agree that this is strange.

How do I file an emacs bug?

Thanks again Drew,

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