sandbox_make.sh

_make is a function
_make () 
{ 
    local cur;
    COMPREPLY=();
    cur="${COMP_WORDS[COMP_CWORD]}";
    if [[ ${cur} != -* ]]; then
        local glob=$(shopt -p nullglob);
        shopt -s nullglob;
        COMPREPLY=($(compgen -W "$(for f in *.c; do echo ${f%.c}; done)" -- ${cur}));
        eval "${glob}" &> /dev/null;
        return 0;
    fi
}