Question: How to exclude one single file #637

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1. PowerUser64 commented on Feb 12, 2025

   

   PowerUser64

   on Feb 12, 2025

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   Doing noau w works as a one-off way to write without conform jumping in, but I think there isn't a way to exclude a file. A way to do it with a modeline would be nice.

   👍React with 👍1Reacted by Vishesh Handa
2. stevearc commented on Feb 13, 2025

   

   stevearc

   on Feb 13, 2025

   Owner

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   Yes, :noau w for one-offs and if you want to have a more durable way to disable formatting for a specific file look at this recipe: https://github.com/stevearc/conform.nvim/blob/master/doc/recipes.md#autoformat-with-extra-features
   It allows you to set a buffer-local variable (vim.b.disable_autoformat) to disable formatting for a file.

   👍React with 👍2Reacted by Blake North and Dzintars
3. stevearc

   closed this as completedon Feb 13, 2025
4. PowerUser64 commented on Feb 16, 2025

   

   PowerUser64

   on Feb 16, 2025

   Last edited by PowerUser64

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   I just realized, a way to do this in a modeline would be to write an autocommand that runs for filetypes nofmt_* (eg. nofmt_cpp), enables vim.b.disable_autoformat (linked in @stevearc's comment), and sets the filetype to the version of the filetype without the nofmt_ at the start. You would then put the nofmt_cpp as the filetype in the modeline, and then the autocommand would run and do its thing! I don't need to do this myself, since I've been using noau w lately, but maybe this will be helpful to someone else!
5. danielyrovas commented on Sep 11, 2026

   

   danielyrovas

   on Sep 11, 2026

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   I was also after a solution and came up with this:

   -- in plugin/autocmds.lua
   vim.api.nvim_create_autocmd("BufReadPost", {
       group = vim.api.nvim_create_augroup("read_buf_autoformat_config", { clear = true }),
       callback = function(args)
           local lines = vim.api.nvim_buf_get_lines(args.buf, 0, 9, false)
   
           for _, line in ipairs(lines) do
               if line:match "nvim:%s*noautoformat" then
                   vim.b[args.buf].disable_autoformat = true
                   break
               end
           end
       end,
   })

   This enables putting nvim: noautoformat near the top of a file to turn it off for the buffer.

   It only works if you use something like the format_on_save setup from the previous comment.