helm seems to implicitly insert the current symbol at point as an initial query.
(For reference, this is
helm-omni from here)
Note how the minibuffer is empty, yet helm is already searching for
This has some performance implications that I'd like to avoid. Is there any way I can turn this behavior off?
(Probably will require advice, as Helm's author says he doesn't want to add an option to turn it off).
There has been a lot of interest in this (but nothing's come of it yet):