[SR-Users] weird dp_translate() behavior

[Juha Heinanen]

while playing with dp_translate(), i noticed the following weird
behavior.

i have a rule with dpid=11, where match_exp='^\+' and subst_exp and
repl_exp are empty.

my test goes like this:

$rU = "+35892345670";
if (dp_translate("11", $rU/$rU")) {
   xlog("ruri user is '$rU'\n");
};

$var(test) = "+35892345670";
if (dp_translate("11", "$var(test)/$var(test)")) {
   xlog("var(test) is '$var(test)'\n");
};

and this is produced to syslog:

Mar 29 20:01:39 localhost /usr/sbin/sip-proxy[20533]: ERROR: ruri user is '+35892345670'
Mar 29 20:01:39 localhost /usr/sbin/sip-proxy[20533]: ERROR: var(test) is ''

that is, $rU is not translated to empty string, but $var(test) is.

can someone provide an explanation for this?  what should the expected
behavior be, when subst_exp and repl_exp are empty?

original author of dialplan module is Andreea-Ancuta Onofrei, but i
don't know if he is still around.

-- juha