Re: Re: Bug? org.el:org-open-at-point

From: David Maus <dmaus@ictsoc.de>
To: Achim Gratz <Stromeko@nexgo.de>
Cc: emacs-orgmode@gnu.org
Subject: Re: Re: Bug? org.el:org-open-at-point
Date: Mon, 20 Sep 2010 22:08:58 +0200	[thread overview]
Message-ID: <87d3s818kl.wl%dmaus@ictsoc.de> (raw)
In-Reply-To: <87fwxokowt.fsf@Rainer.invalid>

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Achim Gratz wrote:
>David Maus <dmaus@ictsoc.de> writes:

>> What syntax did you try?  IIRC `org-gnus-follow-link' expects a /Gnus/
>> link in path, but RFC5538 ("The 'news' and 'nntp' URI Schemes ")[1] has a
>> different definition that must be normalized to a org-gnus.link.

>I tried news:gmane.emacs.orgmode (incomplete, I know), but any other
>link with authority would produce the same result: GNUS tries to enter a
>group with the literal path as specified in the link and gets stuck.

>---------------
>       9:*nntp+news.gmane.org:gmane.emacs.orgmode
> K     *: //news.gmane.org/gmane.emacs.orgmode
>---------------

>The correct path syntax suggested by GNUS to give to
>gnus-group-jump-to-group is nntp+news.gmane.org:gmane.emacs.orgmode, but
>that still doesn't open the Summary buffer and gives no further error
>message.  Browsing around in org-gnus.el suggests that news: links
>should probably not go through that function in org-gnus.el since it
>registers it's own gnus: handler just for that.

1/

Okay, I've pushed a change to master that adds two functions
`org-wl-open-nntp' and `org-gnus-open-nntp' to open nntp: links with
WL or Gnus, respectively.

You have to register one of the functions as link handler, e.g.

,----
| (org-add-link-type "nntp" 'org-gnus-open-nntp)
`----

nntp: links have the form:

nntp://server/group[/article]

Where SERVER is the nntp server, GROUP is the group, and ARTICLE is
the article number.

Limitations: Dunno how to supply login information in Gnus.  Thus,
opening a link like

nntp://user@server/group

will drop the "user" part and fall back to nntp://server/group.

2/

Support for news: links is a little bit tricky: They have the format

news:[//server/][group|message-id]

Where GROUP can contain wild-cards (meaning: List all groups that
match) and MESSAGE-ID appears without a group (meaning: search for the
message with this id on the server).  And SERVER is optional.

3/

The next step would be to supersede the customization variable
`org-gnus-prefer-weblinks' by `org-gnus-prefered-usenet-link-type'
which can be one of:

'http -- create web link to gmane or google
'nntp -- create nntp: link

Best,
  -- David
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