"`tabbed -d > /tmp/tabbed.xid`; vimprobable2 -e `cat /tmp/tabbed.xid`" 
I am then able to send all new instances of vimprobable to tabbed (and not have a new master window open), in other apps, eg., mutt, by:
vimprobable2 -e $(cat /tmp/tabbed.xid) %s
I would like to achieve the same thing in Urxvt.
.Xdefaults contains the matcher arguments:
URxvt.perl-ext-common: default,matcher URxvt.urlLauncher: vimprobable2 URxvt.matcher.button: 1
I have changed the launcher line to point at a wrapper script:
Which is just:
vimprobable2 -e $(cat /tmp/tabbed.xid) %s &
but this just opens a browser instance in tabbed with the default search engine result for
%s if I remove the ampersand).
I have tried with other obvious variables, like
"$@" – they don’t work either.
How do I pass the URL to the wrapper script?
 This also feels like a useless use of cat, so alternative suggestions would be welcome
When clicked with the mouse button specified in the
matcher.buttonresource (default 2, or middle), the program specified in the
matcher.launcherresource (default, the
sensible-browser) will be started with the matched text as first argument.
therefore, you need to set
URxvt.matcher.launcher to a script that
takes a single argument (in sh-type shells, this is spelt
open it. For example:
#! /bin/sh exec vimprobable2 -e $(cat /tmp/tabbed.xid) "$1"
Note: It’s advisable to quote the
$1 argument to prevent the shell
from interpreting meta-characters that may appear in the URL (e.g.,