Re: Get thread info slrn has in article mode?

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On 14-02-16 19:00, J.B. Nicholson-Owens wrote:
> In article mode, slrn can show the user a thread tree: a clear 
> indication of which article is an article's parent, and which
> articles are that article's children (if any). I'd like to get at
> this thread information in an S-Lang macro for slrn.
> 
> I'd like to get at this information without:
> 
> - adding articles to the thread that aren't already in the visible
>  thread tree. I don't want to reconstruct the whole thread nor do I
> want to add any articles to the thread display I'm not already
> seeing.
> 
> - requesting anything from the news server 
> (http://slrn.sourceforge.net/docs/slrn-manual-7.html#akey_get_parent_header
>  says that get_parent_header will download data from the server if
>  necessary).
> 
> - rebuilding thread information by reading References: header data
>  because slrn has apparently already done that plus constructed
> threads from articles where References: header data is missing. We
> see the fruit of this work when slrn shows the user the thread
> tree.
> 
> Is there S-Lang API for slrn to let an S-Lang macro read this
> thread data? It would be okay if this were read-only data for the
> macro.

All the thread info is derived from the References. What else do you need

* all levels up to the root, the initial posting
* just all predecessors of the current posting, but not
  the side branches
* all with the same subject
  (how about subject changes within a thread?)


> I need this information to show the relationships between articles
> in the same thread in a different way than slrn currently does this
> and I'd like to avoid rewriting code that already does this job.

Do you look for something like the current shortcuts esc-1-p and
esc-2-p? Check their sources!

- - Martin
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