Added xscreensaver-watchd

~/.xscreensaver-watch is currently unique to the box

.xinitrc

@@ -13,6 +13,9 @@ test -f ~/.Xresources-local && xrdb -merge ~/.Xresources-local
 test -f ~/.xprofile && source ~/.xprofile
 
 # screensaver can be disabled by creating ~/.noscreensaver (not managed)
-test -f ~/.noscreensaver || xscreensaver &
+test -f ~/.noscreensaver || {
+  xscreensaver &
+  xscreensaver-watchd 2>~/.xscreensaver-watch.log &
+}
 
 exec xmonad

desktop-bin/xscreensaver-watchd

@@ -0,0 +1,42 @@
+#!/bin/bash
+#
+# Invoke script on xscreensaver state change
+#
+# Copyright (C) 2013 Mike Gerwitz
+#
+#  This program is free software: you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation, either version 3 of the License, or
+#  (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+# This simplifies hooking xscreensaver by having a script invoked with each
+# state change rather than having to deal with daemon code. Since the script
+# (and its executable check) is invoked with each and every state change,
+# this has the pleasent and familiar benefit of allowing the user to change
+# the script at any point in time without restarting the daemon.
+#
+# All output from the invoked script is redirected to stderr for logging.
+#
+# The -watch data is output back to stdout so that it may be used as a part
+# of a pipeline in place of xscreensaver-command -watch.
+##
+
+# if no script is given as the first argument, default to a standard script
+# name in the user's home directory
+cmd="${1:-$HOME/.xscreensaver-watch}"
+log="${2:-$HOME/.xscreensaver-watch.log}"
+
+# -watch provides data in the format <state> <ts>; we will invoke the script
+# once for each line of input, passing those data as two arguments
+xscreensaver-command -watch | while read state ts; do
+  [ -x "$cmd" ] && "$cmd" "$state" "$ts" >&2
+  echo "$state $ts"
+done