Description of Bang patterns links to non-existing Haskell prime discussion
The documentation in the GHC Users guide of Bang patterns (https://downloads.haskell.org/~ghc/latest/docs/html/users_guide/glasgow_exts.html#bang-patterns-and-strict-haskell) contains the following section:
GHC supports an extension of pattern matching called bang patterns, written !pat. Bang patterns are under consideration for Haskell Prime. The Haskell prime feature description contains more discussion and examples than the material below.
The link to the Haskell prime discussion ( https://ghc.haskell.org/trac/haskell-prime/wiki/BangPatterns ) leads to a 404 error.
Proposed improvements or changes
If the Haskell prime discussions still exist under some alternative Link, fix the link. Otherwise remove the reference to Haskell prime.
It would be nice to maybe inline the additional information if it is still available.