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I am using spacemacs with racket-mode, company-mode, and scheme-complete, to code in racket, and its pretty efficient. But, in order to have completion for user defined variables and functions, I have to press tab to activate scheme-complete, since only scheme complete is aware of user defined variables/functions. And I don't know what Emacs thinks I want to type like I would if there was a drop down menu. Is there any way to make company mode aware of the user-defined variables/functions that scheme complete is aware of, so that they appear in the drop down menu. Currently it is only aware of built in functions like define, list, etc. I am still relatively new to emacs/spacemacs so I might be doing something stupid. Thanks in advance.

Edit: It seems like symbols become available after 

racket run

is executed, but that doesn't exactly solve the problem of convenience.

Vityou
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One of the most robust ways to get autocompletion is to use dabbrev. It's bound to M-/ by default. You can use it to autocomplete variables, functions and many other things.

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    refer: http://emacs.stackexchange.com/questions/15246/how-add-company-dabbrev-to-the-company-completion-popup – npostavs Jul 06 '16 at 13:39
  • @npostavs The solution in the link doesn't seem to do anything for me. – Vityou Jul 06 '16 at 21:06
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    I think they changed the names of some of the variables, I was able to activate it by customizing the variable company-backends. – Vityou Jul 06 '16 at 23:08