1

I wrote a little function to highlight a current line when navigating which basically mimics this emacs package. It works fine for navigating between windows.

navigation flash

function Util.flash_cursorline()
  vim.cmd([[hi CursorLine guifg=#000000 guibg=#ffffff]])
  vim.fn.timer_start(200, function()
    vim.cmd([[hi CursorLine guifg=NONE guibg=NONE]])
  end)
end
vim.cmd([[au WinEnter * lua require('util').flash_cursorline()]])

Is there an autocommand, or any other way to run a function when jumping between jumplist entries with CTRL-O, CTRL-I in normal mode?

6
  • Welcome to Vi&Vim SE. :h 'cursorline' isn't sufficient? (I can't tell what you have now because the gif isn't animated AFAICT.)
    – B Layer
    May 5 at 20:21
  • 1
    In Vim I you can just do nnoremap <C-o> <C-o>:call YourFunction<CR>. This would make the jump, then call the function. Not sure if that would work with Neovim/lua...
    – mattb
    May 5 at 21:51
  • @BLayer I'm using cursorline and it is helpful, but this feature would be nice to have too.
    – vikdotdev
    May 6 at 7:18
  • @mattb thank you, this gives me an idea for the solution
    – vikdotdev
    May 6 at 7:20
  • Cool. Just wanted to make sure you were aware of it (cursorline).
    – B Layer
    May 6 at 8:09
1

@mattb's reply gave me an idea to map additional function to <C-o> and <C-i> and it seems to be working alright.

vim.api.nvim_set_keymap("n", "<C-o>", "<C-o>:lua require('util').flash_cursorline()<CR>", { noremap = true, silent = true })
vim.api.nvim_set_keymap("n", "<C-i>", "<C-i>:lua require('util').flash_cursorline()<CR>", { noremap = true, silent = true })

3
  • Nice! But note that the <space><bar><space> you included is happening in Normal mode, so those are being interpreted as Normal-mode commands. You'll probably want to skip those. You should also include { silent = true } in your options, to prevent the :lua call from flashing on the command line. If this was regular Vimscript, I'd write it as :nnoremap <silent> <C-o> <C-o>:Lua require('util').flash_cursorline()<CR>, so you might want to use the equivalent.
    – filbranden
    May 6 at 20:44
  • 1
    @filbranden good points! I'll modify the answer.
    – vikdotdev
    May 7 at 7:18
  • I edited your answer to also drop the <bar>, which in this case was working as vimhelp.org/motion.txt.html#bar, which typically moves to a specific column in a line, given by a count. (Without a count, it goes to the first column, which is probably harmless here... But it's still unnecessary and unrelated to the issue itself, so I thought it was better to drop it.)
    – filbranden
    May 7 at 12:26

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