source: vendor/bash/3.1-p17/examples/functions/xalias.bash

# xalias - convert csh alias commands to bash functions
# from Mohit Aron <aron@cs.rice.edu>
# posted to usenet as <4i5p17$bnu@larry.rice.edu>
function xalias ()
{
        if [ "x$2" = "x" ] 
        then
                declare -f $1
        else
                case $2 in
                *[#\!]*)
                        comm=$(echo $2 | sed  's/\\!\*/\"$\@\"/g
                                               s/\\!:\([1-9]\)/\"$\1\"/g
                                               s/#/\\#/g')
                        ;;
                *)
                        comm="$2 \"\$@\"" ;;
                esac

                eval function $1 \(\) "{" command "$comm"  "; }"
        fi
}