source: vendor/bash/3.1/examples/functions/func

#
# func -- print out definitions for functions named by arguments
#
# usage: func name [name ...]
#
# Chet Ramey
# chet@ins.CWRU.Edu
func()
{
        local status=0

        if [ $# -eq 0 ] ; then
                echo "usage: func name [name...]" 1>&2
                return 1
        fi

        for f
        do
                if [ "$(builtin type -type $f)" != "function" ] ; then
                        echo "func: $f: not a function" 1>&2
                        status=1        # one failed
                        continue
                fi
                builtin type $f | sed 1d
        done
        return $status
}