Re: troubles after have changed locale ISO-8859-15 to utf8

[Katsumi Yamaoka]

>>>>> francois.lagarde@gmail.com wrote:

> I am using GNU Emacs 22.1.1 and   No Gnus v0.7.

> Few days ago, I changed my locale from ISO-8859-15 to UTF8. After some
> headaches, everything seems to be fine.

> When I send mails, I keep  a copy of the message in a file in a folder
> given by:
> (concat  "nnml:gposted." (format-time-string "%Y") ".news-" (format-
> time-string "%m-%B-%Y"))

> The bad thing, is that I am french, and some folders have accents like
> "février". Folder created while I was using ISO-8859-15  are now badly
> displayed (funny characters like ? and others things like that). So i
> decided to convert them with convmv. Now it is a mess. I cannot acces
> to folder such as
>  nnml:gposted.2007.mails-02-février-2007

First of all, please update your No Gnus from CVS and read the
Info manual carefully:

(info "(gnus)Non-ASCII Group Names") <- type `C-x C-e' here.

The non-ASCII group names handling for the nntp and the nnml back
ends has been improved in the Gnus CVS trunk a couple of months
ago (before those changes, Gnus have not been working fully with
non-ASCII group names, particularly with the nnml back end).
However, I noticed I've overlooked renaming of nnml groups, and
Gcc.  Now both work properly.

There are three important variables that you may want to set;
those are:

gnus-group-name-charset-method-alist
gnus-group-name-charset-group-alist
nnmail-pathname-coding-system

Though, you will not necessarily have to customize all those
variables.  If anything, leaving them as the defaults seems to
be good in the utf-8 locale.

Well, although it's been untested, I think the best way for you
is to change the encoding of those directory names to utf-8
something like the following:

1. To make those groups visible temporarily, set `g-g-n-c-m-a'
   and `n-p-c-s' as follows:

   (setq gnus-group-name-charset-method-alist
         '(((nnml . "") . iso-8859-15))
         nnmail-pathname-coding-system 'iso-8859-15)

   You might need to restart Gnus.

2. Make sure that you can read the group
   nnml:gposted.2007.mails-02-février-2007 and others.  If you
   cannot read them, go to 3b.

3a. In the group buffer, rename those group names to the ones
   that contain no non-ASCII characters.  For instance:

   G r gposted.2007.mails-02-fevrier-2007 RET

4a. Reset `g-g-n-c-m-a' and `n-p-c-s' to the default values:

   (setq gnus-group-name-charset-method-alist nil
         nnmail-pathname-coding-system nil)

5. But if the value of `default-file-name-coding-system' is not
   utf-8 or mule-utf-8, use the following hereafter:

   (setq nnmail-pathname-coding-system 'utf-8)

   You might need to restart Gnus.

6. Rename those group names to the ones that they were.

   G r gposted.2007.mails-02-février-2007 RET

   That's all.
----------------------------------------------------------------
The reason you cannot read the archive groups might be that you
made those groups before Gnus was improved.  I'm not sure what
happened, but Emacs' internal coding system (i.e. `emacs-mule')
might have been used.

3b. Open a terminal emulator, e.g. xterm.  Set the locale to
   iso-8859-15.  Maybe it is enough to set the LC_ALL environment
   variable to that of Latin-9 (I don't know the locale name).

   Then rename those directory names to the ones that contain no
   non-ASCII characters.  For instance:

   cd ~/Mail/gposted/2007
   mv mails-02-février-2007 mails-02-fevrier-2007

4b. In the group buffer, delete the archive groups in question
   by `G DEL' or kill them by `C-k' if deleting doesn't work.

   Create the archive groups of which the names contain no
   non-ASCII characters.  For instance:

   G m mails-02-fevrier-2007 RET nnml RET

   Perform the `M-g' command on those groups and make sure there
   are articles.  And then, goto 5.
----------------------------------------------------------------

> Moreover, since I use nnir/swish to archive my mails, I can't fetch
> any mails holding in a folder with accents accents...

> any help would be appreciated.

I'm not familiar with nnir.el, sorry.