Add %s to the command in the Gnome url handlers....

third_party/xdg-utils/scripts/xdg-settings

 #!/bin/sh
 #---------------------------------------------
 #   xdg-settings
 #
 #   Utility script to get various settings from the desktop environment.
 #
 #   Refer to the usage() function below for usage.
 #
 #   Copyright 2009, Google Inc.
 #
@@ skipping 616 matching lines @@
     binary="`desktop_file_to_binary "$1"`"
     [ "$binary" ] || exit_failure_file_missing
     set_browser_mime "$1" || return
 
     # Set the default browser.
     gconftool-2 --type string --set /desktop/gnome/applications/browser/exec "$binary"
     gconftool-2 --type bool --set /desktop/gnome/applications/browser/needs_term false
     gconftool-2 --type bool --set /desktop/gnome/applications/browser/nremote true
     # Set the handler for HTTP and HTTPS.
     for protocol in http https; do
-        gconftool-2 --type string --set /desktop/gnome/url-handlers/$protocol/command "$binary"
+        gconftool-2 --type string --set /desktop/gnome/url-handlers/$protocol/command "$binary %s"
         gconftool-2 --type bool --set /desktop/gnome/url-handlers/$protocol/needs_terminal false
         gconftool-2 --type bool --set /desktop/gnome/url-handlers/$protocol/enabled true
     done
     # Set the handler for about: and unknown URL types.
     for protocol in about unknown; do
-        gconftool-2 --type string --set /desktop/gnome/url-handlers/$protocol/command "$binary"
+        gconftool-2 --type string --set /desktop/gnome/url-handlers/$protocol/command "$binary %s"
     done
 }
 
 # }}} GNOME
 # {{{ xfce
 
 get_browser_xfce()
 {
     search="${XDG_CONFIG_HOME:-$HOME/.config}:${XDG_CONFIG_DIRS:-/etc/xdg}"
     IFS=:
@@ skipping 205 matching lines @@
     ;;
 
     generic)
     dispatch_generic "$@"
     ;;
 
     *)
     exit_failure_operation_impossible "unknown desktop environment"
     ;;
 esac