source: vendor/bash/3.1/examples/functions/csh-compat

# C-shell compatabilty package.
# setenv VAR VALUE
function setenv ()
{
  export $1="$2"
}

function unsetenv ()
{
  unset $1
}

# Can't write foreach yet.  Need pattern matching, and a few extras.
function foreach () {
echo 'Can'\''t do `foreach'\'' yet.  Type "help for".'
}

# Make this work like csh's.  Special case "term" and "path".
#set () {
#}

chdir ()
{
  builtin cd "$@"
}

# alias - convert csh alias commands to bash functions
# from Mohit Aron <aron@cs.rice.edu>
# posted to usenet as <4i5p17$bnu@larry.rice.edu>
function alias ()
{
        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
}