autocomplete-ghc-flags.trac

= Autocomplete GHC's command line options

GHC 7.8 adds `--show-options` flag that prints on standard output all supported flags. This can be used to enable autocompletion of options on the command line (in shells that support such feature).

== Bash

Add this code to your `~/.bashrc` file:

{{{
# Autocomplete GHC commands
_ghc()
{
    local envs=`ghc --show-options`
    # get the word currently being completed
    local cur=${COMP_WORDS[$COMP_CWORD]}
 
    # the resulting completions should be put into this array
    COMPREPLY=( $( compgen -W "$envs" -- $cur ) )
}
complete -F _ghc -o default ghc
}}}

== Zsh

Zsh autocompletion for GHC can be also accomplished using scripts that don't use --show-options flag. See [http://www.haskell.org/haskellwiki/Zsh HaskellWiki] for details.