Info Catalog gnus: Limiting gnus: Summary Buffer gnus: Sorting the Summary Buffer

gnus: Threading

 
 3.9 Threading
 =============
 
 Gnus threads articles by default.  “To thread” is to put responses to
 articles directly after the articles they respond to—in a hierarchical
 fashion.
 
    Threading is done by looking at the ‘References’ headers of the
 articles.  In a perfect world, this would be enough to build pretty
 trees, but unfortunately, the ‘References’ header is often broken or
 simply missing.  Weird news propagation exacerbates the problem, so one
 has to employ other heuristics to get pleasing results.  A plethora of
 approaches exists, as detailed in horrible detail in Customizing
 Threading.
 
    First, a quick overview of the concepts:
 
 “root”
      The top-most article in a thread; the first article in the thread.
 
 “thread”
      A tree-like article structure.
 
 “sub-thread”
      A small(er) section of this tree-like structure.
 
 “loose threads”
      Threads often lose their roots due to article expiry, or due to the
      root already having been read in a previous session, and not
      displayed in the summary buffer.  We then typically have many
      sub-threads that really belong to one thread, but are without
      connecting roots.  These are called loose threads.
 
 “thread gathering”
      An attempt to gather loose threads into bigger threads.
 
 “sparse threads”
      A thread where the missing articles have been “guessed” at, and are
      displayed as empty lines in the summary buffer.
 

Menu

 
· Customizing Threading       Variables you can change to affect the threading.
· Thread Commands             Thread based commands in the summary buffer.
 

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