pidgin/ljfisher-ssl-client-auth

file isExecutable
Suppress error spews when we've left an IRC channel but the window is open.

My take on a patch from Florian Quèze to fix yet another IRC WHO problem.
#!/bin/sh
METHOD_NAME=$1
if test -z "$METHOD_NAME"
then
cat <<EOF
This program calls purple API functions using DBus and prints the return value.
If you are not interested in the return value, use purple-send-async.
Usage:
$0 method-name type1:parameter1 type2:parameter2 ...
This shell script just invokes dbus-send, see man dbus-send for how
to specify the parameters.
Examples:
$0 PurpleAccountsFindConnected string: string:prpl-jabber
$0 PurpleAccountsGetAll
$0 PurpleCoreQuit
Use dbus-viewer to get the list of supported functions and their parameters.
EOF
exit 1
fi
shift
dbus-send --dest=im.pidgin.purple.PurpleService --print-reply --type=method_call /im/pidgin/purple/PurpleObject im.pidgin.purple.PurpleInterface.$METHOD_NAME "$@"