# bash completion for gdb

have gdb || return

_gdb()
{
    local cur prev words cword
    _init_completion || return

    if [ $cword -eq 1 ]; then
        local IFS
        compopt -o filenames
        if [[ "$cur" == */* ]]; then
            # compgen -c works as expected if $cur contains any slashes.
            IFS=$'\n'
            COMPREPLY=( $( PATH="$PATH:." compgen -d -c -- "$cur" ) )
        else
            # otherwise compgen -c contains Bash's built-in commands,
            # functions and aliases. Thus we need to retrieve the program
            # names manually.
            IFS=":"
            local path_array=( $( \
                sed -e 's/:\{2,\}/:/g' -e 's/^://' -e 's/:$//' <<<"$PATH" ) )
            IFS=$'\n'
            COMPREPLY=( $( compgen -d -W '$(find "${path_array[@]}" . \
                -mindepth 1 -maxdepth 1 -not -type d -executable \
                -printf "%f\\n" 2>/dev/null)' -- "$cur" ) )
        fi
    elif [ $cword -eq 2 ]; then
        COMPREPLY=( $( compgen -W "$( command ps axo comm,pid | \
            awk '{if ($1 ~ /^'"${prev##*/}"'/) print $2}' )" -- "$cur" ) )
        compopt -o filenames
        COMPREPLY+=( $( compgen -f -X '!?(*/)core?(.+([0-9]))' -o plusdirs \
            -- "$cur" ) )
    fi
} &&
complete -F _gdb gdb

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