Example
# The following shell function will be used to generate completions for
# the "nuance_tune" command.
_nuance_tune_opts ()
{
local curr_arg prev_arg
curr_arg=${COMP_WORDS[COMP_CWORD]}
prev_arg=${COMP_WORDS[COMP_CWORD-1]}
# The "config" option takes a file arg, so get a list of the files in the
# current dir. A case statement is probably unnecessary here, but leaves
# room to customize the parameters for other flags.
case "$prev_arg" in
-config)
COMPREPLY=( $( /bin/ls -1 ) )
return 0
;;
esac
# Use compgen to provide completions for all known options.
COMPREPLY=( $(compgen -W '-analyze -experiment -generate_groups -compute_thresh -config -output -help -usage -force -lang -grammar_overrides -begin_date -end_date -group -dataset -multiparses -dump_records -no_index -confidencelevel -nrecs -dry_run -rec_scripts_only -save_temp -full_trc -single_session -verbose -ep -unsupervised -write_manifest -remap -noreparse -upload -reference -target -use_only_matching -histogram -stepsize' -- $curr_arg ) );
}
# The -o parameter tells Bash to process completions as filenames, where applicable.
complete -o filenames -F _nuance_tune_opts nuance_tune
