Re: gnus-topic-get-new-news-this-topic grabs a lot of data on gnus.ding

[Karl Kleinpaste <karl@charcoal.com>]

Christoph Conrad <cc@cli.de> writes:
> Gnus grabs about 20-30 KByte data
> (shown in the status line) from the server, even when only one or two
> messages with about 2-4 KByte are new.

If `gnus-fetch-old-headers' is non-nil:

  *Non-nil means that Gnus will try to build threads by grabbing old headers.
  If an unread article in the group refers to an older, already read (or
  just marked as read) article, the old article will not normally be
  displayed in the Summary buffer.  If this variable is non-nil, Gnus
  will attempt to grab the headers to the old articles, and thereby
  build complete threads.  If it has the value `some', only enough
  headers to connect otherwise loose threads will be displayed.  This
  variable can also be a number.  In that case, no more than that number
  of old headers will be fetched.  If it has the value `invisible', all
  old headers will be fetched, but none will be displayed.

  The server has to support NOV for any of this to work.