[debbugs-tracker] bug#18786: closed ((error "Attempt to modify read-only object" (("\\.txz\\'" . tar-mode))) on adding mode)

[GNU bug Tracking System]

Your message dated Tue, 21 Oct 2014 14:02:37 -0400
with message-id <address@hidden>
and subject line Re: bug#18786: (error "Attempt to modify read-only object" 
(("\\.txz\\'" . tar-mode))) on adding mode
has caused the debbugs.gnu.org bug report #18786,
regarding (error "Attempt to modify read-only object" (("\\.txz\\'" . 
tar-mode))) on adding mode
to be marked as done.

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18786: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=18786
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> --- Begin Message ---
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> Subject: 
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> (error "Attempt to modify read-only object" (("\\.txz\\'" . tar-mode))) on adding mode
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> Date: 
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> Tue, 21 Oct 2014 09:34:10 -0400
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>
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>
> Hey folks,
>
> I have a bunch of stuff like: 
>
>     (nconc auto-mode-alist '(("\\.ctl" . scheme-mode))))
>
> in my .emacs.  
>
> When I launch emacs, the complaint is:
>
> error: Attempt to modify read-only object, ((\.txz\' . tar-mode))
>
> Clearing all the auto-mode-alist additions clears this error, by pulling them 
> out of the .emacs.  Can anybody explain what is going on?
>
> This has emerged after upgrading last night to 24.4 using both 
> http://emacsformacosx.com/ and compiling for myself via homebrew.  I’m on Mac 
> OS 10.10 Yosemite.
>
> Please let me know how to help debug this.
>
> Cheers!
>
> --
> Boyan Penkov
> www.boyanpenkov.com
>
>
>
>
> --- End Message ---
> --- Begin Message ---
>
>
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> Subject: 
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> Re: bug#18786: (error "Attempt to modify read-only object" (("\\.txz\\'" . tar-mode))) on adding mode
>
>
>
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> Date: 
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> Tue, 21 Oct 2014 14:02:37 -0400
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>
>
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> User-agent: 
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> Gnus/5.13 (Gnus v5.13) Emacs/25.0.50 (gnu/linux)
>
>
>
>
> > Thanks for the pointer!
>
> You're welcome, closed,
>
>
>         Stefan
>
>
> --- End Message ---