feat: add bufferline buffers renaming

nvim/lua/configs/bufferline.lua

@@ -1,81 +1,108 @@
 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 = {
-        mode = "buffers", -- set to "tabs" to only show tabpages instead
-        style_preset = bufferline.style_preset.default,
-        themable = true,
-        indicator = {
-            icon = '▎',
-            style = 'icon',
+  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,
+    indicator = {
+      icon = '▎',
+      style = 'icon',
+    },
+    groups = {
+      items = {
+        {
+          name = 'tornado',
+          matcher = function(buf)
+            return (buf.path or ""):lower():match("tornado")
+          end,
         },
-        groups = {
-          items = {
-            {
-              name = 'tornado',
-              matcher = function(buf)
-                return (buf.path or ""):lower():match("tornado")
-              end,
-            },
-            {
-              name = 'gornado',
-              matcher = function(buf)
-                return (buf.path or ""):lower():match("gornado")
-              end,
-            },
-            {
-              name = 'tests',
-              matcher = function(buf)
-                return (buf.name or ""):lower():match("*test*%.cpp$")
-              end,
-            },
-            {
-              name = 'code',
-              matcher = function(buf)
-                return (buf.name or ""):lower():match("%.h$")
-                    or (buf.name or ""):lower():match("%.c$")
-                    or (buf.name or ""):lower():match("%.cpp$")
-              end,
-            },
-          },
-          hidden = false,
+        {
+          name = 'gornado',
+          matcher = function(buf)
+            return (buf.path or ""):lower():match("gornado")
+          end,
         },
-        buffer_close_icon = '󰅖',
-        modified_icon = '● ',
-        close_icon = ' ',
-        left_trunc_marker = ' ',
-        right_trunc_marker = ' ',
-        max_name_length = 18,
-        max_prefix_length = 15,
-        truncate_names = true,
-        tab_size = 18,
-        offsets = {
-            {
-                filetype = "NvimTree",
-                text = "File Explorer",
-                text_align = "left",
-                separator = true
-            }
+        {
+          name = 'tests',
+          matcher = function(buf)
+            return (buf.name or ""):lower():match("*test*%.cpp$")
+          end,
         },
-        color_icons = true,
-        get_element_icon = function(element)
-          local icon, hl = require('nvim-web-devicons').get_icon_by_filetype(element.filetype, { default = false })
-          return icon, hl
-        end,
-        show_buffer_icons = true,
-        show_buffer_close_icons = true,
-        show_close_icon = true,
-        show_tab_indicators = true,
-        separator_style =  "slant",
-        enforce_regular_tabs = false,
-        always_show_bufferline = true,
-        auto_toggle_bufferline = true,
-        hover = {
-            enabled = true,
-            delay = 200,
-            reveal = {'close'}
+        {
+          name = 'code',
+          matcher = function(buf)
+            return (buf.name or ""):lower():match("%.h$")
+                or (buf.name or ""):lower():match("%.c$")
+                or (buf.name or ""):lower():match("%.cpp$")
+          end,
         },
-        pick = {
-          alphabet = "abcdefghijklmopqrstuvwxyzABCDEFGHIJKLMOPQRSTUVWXYZ1234567890",
-        },
-    }
+      },
+      hidden = false,
+    },
+    buffer_close_icon = '󰅖',
+    modified_icon = '● ',
+    close_icon = ' ',
+    left_trunc_marker = ' ',
+    right_trunc_marker = ' ',
+    max_name_length = 18,
+    max_prefix_length = 15,
+    truncate_names = true,
+    tab_size = 18,
+    offsets = {
+      {
+        filetype = "NvimTree",
+        text = "File Explorer",
+        text_align = "left",
+        separator = true
+      }
+    },
+    color_icons = true,
+    get_element_icon = function(element)
+      local icon, hl = require('nvim-web-devicons').get_icon_by_filetype(element.filetype, { default = false })
+      return icon, hl
+    end,
+    show_buffer_icons = true,
+    show_buffer_close_icons = true,
+    show_close_icon = true,
+    show_tab_indicators = true,
+    separator_style = "slant",
+    enforce_regular_tabs = false,
+    always_show_bufferline = true,
+    auto_toggle_bufferline = true,
+    hover = {
+      enabled = true,
+      delay = 200,
+      reveal = { 'close' }
+    },
+    pick = {
+      alphabet = "abcdefghijklmopqrstuvwxyzABCDEFGHIJKLMOPQRSTUVWXYZ1234567890",
+    },
+  }
 }

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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