feat: add bufferline buffers renaming

nvim/lua/configs/bufferline.lua

@@ -1,6 +1,33 @@
 local bufferline = require('bufferline')
+
+vim.api.nvim_create_user_command('BufferRename', function(opts)
+  local bufnr = vim.api.nvim_get_current_buf()
+  local function rename(name)
+    if name == nil or not vim.api.nvim_buf_is_valid(bufnr) then
+      return
+    end
+    name = vim.trim(name)
+    vim.b[bufnr].bufferline_name = name ~= '' and name or nil
+    vim.cmd('redrawtabline')
+  end
+
+  if opts.bang then
+    rename('')
+  elseif opts.args ~= '' then
+    rename(opts.args)
+  else
+    vim.ui.input({
+      prompt = 'Buffer label (empty to reset): ',
+      default = vim.b[bufnr].bufferline_name or '',
+    }, rename)
+  end
+end, { nargs = '*', bang = true, desc = 'Rename bufferline label (use ! to reset)' })
+
 bufferline.setup {
   options = {
+    name_formatter = function(buf)
+      return vim.b[buf.bufnr].bufferline_name or buf.name
+    end,
     mode = "buffers", -- set to "tabs" to only show tabpages instead
     style_preset = bufferline.style_preset.default,
     themable = true,

nvim/lua/mappings.lua

@@ -105,6 +105,7 @@ map("n", "<leader>bt", "<cmd>BufferLineGroupToggle tests<CR>", { desc = "Toggle
 map("n", "<leader>bc", "<cmd>BufferLineGroupToggle code<CR>", { desc = "Toggle 'code' group" })
 map("n", "<leader>bp", "<cmd>BufferLineGroupToggle tornado<CR>", { desc = "Toggle 'tornado' group" })
 map("n", "<leader>bg", "<cmd>BufferLineGroupToggle gornado<CR>", { desc = "Toggle 'gornado' group" })
+map("n", "<leader>br", "<cmd>BufferRename<CR>", { desc = "Rename buffer label" })
 
 
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