RE: hexl-mode, while saving encoding problem

[Gelika PAPP-RAFFY]

Thanks for your tip, it works fine.

Now I have a very basic problem: My emacs installation is on a virtual
machine with no internet access, so that I can not report the bug from emacs
directly.
If this is to be corrected as a bug, then there should be also other
compressed audio files added to this list (I didn't try to edit them so I am
not sure they would save wrongly): .wma, .aac, .m4a and probably also ogg
vorbis files, I don't know the extensions.

Thank you for the prompt support, I had been searching the net for quite a
while now *what* could be corrupting and how not to corrupt my files :-))))

Gelika

> -----Original Message-----
> From: Peter_Dyballa@Web.DE [mailto:Peter_Dyballa@Web.DE] 
> Sent: Thursday, November 08, 2007 4:40 PM
> To: Gelika PAPP-RAFFY
> Cc: help-gnu-emacs@gnu.org
> Subject: Re: hexl-mode, while saving encoding problem
> 
> 
> Am 08.11.2007 um 16:03 schrieb Gelika PAPP-RAFFY:
> 
> > I am editing binary files with emacs (ID3 tags in .mp3 files).
> > I use the hexl-mode.
> > When I want to save my modifications I get the question "Selet  
> > coding system" and it is asking me to choose between several like  
> > undecided-unix, mule-utf-8, etc.
> 
> There is a variable, file-coding-system-alist, that also lists file  
> name extensions for which no-conversion is applied upon reading or  
> writing. Obviously no-one has edited an MP3 file before, so this is  
> not mentioned there.
> 
> It might be worth to write a bug report and ask for this enhancement.
> 
> To solve your problem now you can add to your init file this code:
> 
>       (add-to-list 'file-coding-system-alist '("\\.mp3\\'" . 
> no-conversion))
> 
> To have it set at once put the line into the *scratch* buffer,  
> position the cursor at its end and press C-j. Then open, edit, and  
> save the MP3 file again.
> 
> --
> Greetings
> 
>    Pete
> 
> "Isn't vi that text editor with two modes... one that beeps and one
> that corrupts your file?" -- Dan Jacobson, on comp.os.linux.advocacy
> 
>