--- gentoo.orig	2007-06-08 15:58:54.000000000 -0700
+++ gentoo.new	2007-06-08 16:06:39.000000000 -0700
@@ -20,13 +20,12 @@
 #
 _portdir()
 {
-    sed -n -e '/^PORTDIR=/ { s/^[^=]\+="\?\([^"]\+\|\S\+\).*/\1/p ; q }' \
-        /etc/make.{conf,globals} 2>/dev/null
-
-    if [[ $1 == '-o' ]] ; then
-        sed -n -e '/^PORTDIR_OVERLAY=/ { s/^[^=]\+="\?\([^"]\+\|\S\+\).*/\1/p ; q }' \
-            /etc/make.conf 2>/dev/null
-    fi
+    local grab='${PORTDIR}'
+    [[ $1 == '-o' ]] && grab="${grab} \${PORTDIR_OVERLAY}"
+    # use the source, Luke -- offers flexibility in make.conf
+    eval "source /etc/make.globals
+          source /etc/make.conf
+          echo ${grab}"
 }
 
 # like _pkgname but completes on package names only (no category)