[Israel.pm] how do I handle unknown number of captures ?

[Uri Itscowits]

On Wednesday 28 January 2004 01:13 pm, you wrote:
  > For example, I just typed into bash:
  >    perl -we '@res="abac--ad"=~/(a.)/g; print "@res\n"'
  > and received the answer:
  >    ab ac ad

Where did the separating space (in the printed result ) come from ?