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helm seems to implicitly insert the current symbol at point as an initial query.

enter image description here

(For reference, this is helm-omni from here)

Note how the minibuffer is empty, yet helm is already searching for idle-require.

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):

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  • The screenshot looks a bit like swiper, which doesn't have the deficiency that you mention. And lispy-goto works better than imenu for Elisp. – abo-abo Jun 23 '15 at 16:30
  • @abo-abo Indeed. But it's called helm-omni for a reason. It does everything: files, buffers, lines, ag, find, locate, git etc.. The function automatically builds the helm based on context information (i.e. am I in a project?). It works really well... except when the ffap-like behavior jumps up and gets in the way. – PythonNut Jun 23 '15 at 16:52
  • I see. No wonder you try to make it work:) – abo-abo Jun 23 '15 at 16:53
  • You should probably link to the definition of helm-omni from stackoverflow.com/a/19284509/821010 or wherever in the question... although with that version of my-helm-omni I'm not able to reproduce the issue you described. – Joe Corneli Jun 23 '15 at 21:35
  • @JoeCorneli ah thanks. It didn't occur to me that this could be function specific. It looks like this has something to do with helm-source-find-files, which is in my latest omni, but not that one. – PythonNut Jun 23 '15 at 22:43
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Some sources used by you like helm-source-imenu and helm-source-occur are in the helm-sources-using-default-as-input list, so helm will build result initially, so setting that list to nil temporarily should work, for example

(let ((helm-sources-using-default-as-input nil))
  (helm ...))
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