Homepage: https://github.com/manzyuk/ghci-completion
Author: Oleksandr Manzyuk
Updated:
Completion for GHCi commands in inferior-haskell buffers
Purpose:
To support completion for GHCi commands (like :load, :module, :set
etc.) in inferior-haskell buffers.
Installation:
To turn on GHCi commands completion in inferior-haskell buffers,
add this to .emacs:
(add-hook 'inferior-haskell-mode-hook 'turn-on-ghci-completion)
Otherwise, call `turn-on-ghci-completion'.
You may also want to set `ghci-completion-ghc-pkg-additional-args'
to the list of additional argument to supply to `ghc-pkg'. For
example, this variable can be used to specify which database (user
or global) or which package config file to use.
Limitations:
* This package is developed for Emacs 24 and it probably only works
with Emacs 24. In particular, we rely on lexical bindings, which
have been introduced in Emacs 24, and on `pcomplete', which is
effectively broken in 23.2.
* Only the following commands are supported: :add, :browse[!], :cd,
:edit, :load, :module, :set, :unset, :show. It would be nice to
have shell completion for :!, for example.
* The starred versions of the commands :add, :browse[!], :load, and
:module are not supported, partly because I don't use them, and
partly because, for example, :module offers completion only on
the exposed modules in registered packages in both the global and
user databases, and for these :module * is meaningless.
* :set and :unset support only a subset of all GHC flags: language
extensions, warnings, and debugging options. Adding completion
for other flags is trivial. It would be nice, however, to be
able to generate the list of all GHC flags programmatically.