By default, Company mode seems to convert every prediction into lower case.


  [Helloworldofgoo]  //Company prediction

This is not very practical for case sensitive programming languages without a special backend. How can I make company mode case sensitive?

1 Answer 1


After some research, I came across the company mode git hub ticket,

which says that company mode uses dabbrev for plain text as backend.

dabbrev has an option to downcase things, it is turned on by default but can be turned off:

(setq company-dabbrev-downcase nil)

Now all is well.

  • 3
    that only works for the company-dabbrev backend... unfortunately I'm seeing the lowercasing problem with the company-ispell backend.
    – fommil
    Jun 18, 2015 at 22:39
  • 13
    This drove me crazy for so long, and since it only happened in some modes, and was only a minor annoyance, I just let it go forever. Finally decided to look into it today. Seems like a weird thing to enable by default, but I am sure there is a reason.
    – elethan
    Jul 29, 2016 at 20:36
  • 4
    Thanks for this. One google, one solution. What a dumbarse default;)
    – RichieHH
    Mar 13, 2019 at 8:20
  • Odd thing is that I had its value as case-replace and that was t, but didn't seem to act like the documentation would lead me to expect. Jan 13, 2021 at 16:35

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