I have the following options:

set ignorecase
set smartcase
set incsearch
set wrapscan

The first two options cause the searches to be case-insensitive if there is no uppercase letter in the pattern.

I want this option to be disabled for the gd functionality, and preferably its variants.

I wanted the same for :h star, too, and got it from a vi.SE answer. Sadly, this concept cannot be used to implement gd, because gd analyzes a few choices to guess where the declaration of the variable under cursor might be (details in :h gd). One needs to implement that with the query appended with \C to make the search case-sensitive.

Emulating the default implementation of gd is the real work here.

  • Can't you simply unset ignorecase and smartcase before doing gd and then reset them to their previous value?
    – romainl
    Oct 13, 2022 at 14:03
  • @romainl If you mean switching them manually or with a keybinding, then yes. But if you mean in a function, then I don't think so, because when I switch noic back to ic, the matches/highlights will re-sync.
    – 3N4N
    Oct 13, 2022 at 14:49
  • 1
    @romainl, you're right. I just missed/overlooked a step. Working fine now.
    – 3N4N
    Oct 14, 2022 at 4:51

1 Answer 1


Implementing romainl's comment, we execute the following sequence:

  • enable case-sensitive search
  • execute normal gd key
  • enable case-insensitive search

I tried that before posting a question here. It has the limitation that after :set noignorecase, it'll highlight the case-insensitive matches.

I figured out later that we can circumvent this problem by setting the current search register itself to forcefully match in a case-sensitive manner, with :h /\C.

nnoremap <silent> gd
      \ :let _is_ic = &ic<CR>
      \:set noic<CR>
      \:normal! gd<CR>
      \:let @/ = @/ .. '\C'<CR>
      \:let &ic = _is_ic<CR>
      \:unlet _is_ic<CR>

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Not the answer you're looking for? Browse other questions tagged or ask your own question.