[Freeswitch-users] regex groups

[Joseph L. Casale]

I wrote up a quick dialplan and intended on using $0 for the whole number, so my regex was:
     <condition field="destination_number" expression="^0\d+$">
but $0 was empty until I rewrote it:
     <condition field="destination_number" expression="^(0\d+)$">

Is this expected, I assumed not and I was not looking for $1 etc I figured $0 to
always get populated.

Thanks,
jlc