kickstart.nvim/lua/plugins/bufferline.lua

return {
  'akinsho/bufferline.nvim',
  dependencies = {
    'moll/vim-bbye',
    'nvim-tree/nvim-web-devicons',
  },
  config = function()
    -- vim.opt.linespace = 8

    require('bufferline').setup {
      options = {
        mode = 'buffers',                    -- 'buffers', -- set to "tabs" to only show tabpages instead

        themable = true,                     -- allows highlight groups to be overriden i.e. sets highlights as default
        numbers = 'none',                    -- | "ordinal" | "buffer_id" | "both" | function({ ordinal, id, lower, raise }): string,
        close_command = 'Bdelete! %d',       -- can be a string | function, see "Mouse actions"
        right_mouse_command = 'Bdelete! %d', -- can be a string | function, see "Mouse actions"
        left_mouse_command = 'buffer %d',    -- can be a string | function, see "Mouse actions"
        middle_mouse_command = nil,          -- can be a string | function, see "Mouse actions"
        -- buffer_close_icon = '󰅖',
        buffer_close_icon = '✗',
        -- buffer_close_icon = '✕',
        close_icon = '',
        path_components = 1, -- Show only the file name without the directory
        modified_icon = '●',
        left_trunc_marker = '',
        right_trunc_marker = '',
        max_name_length = 30,
        max_prefix_length = 30, -- prefix used when a buffer is de-duplicated
        tab_size = 21,
        diagnostics = "nvim_lsp",
        diagnostics_update_in_insert = false,
        diagnostics_indicator = function(count, level, diagnostics_dict, context)
          local icon = level:match("error") and "󰅚 " or "󰀪 "
          return " " .. icon .. count
        end,
        color_icons = true,
        show_buffer_icons = true,
        show_buffer_close_icons = true,
        show_close_icon = true,
        persist_buffer_sort = true, -- whether or not custom sorted buffers should persist
        separator_style = { '│', '│' }, -- | "thick" | "thin" | { 'any', 'any' },
        enforce_regular_tabs = true,
        always_show_bufferline = true,
        show_tab_indicators = false,
        indicator = {
          -- icon = '▎', -- this should be omitted if indicator style is not 'icon'
          style = 'none', -- Options: 'icon', 'underline', 'none'
        },
        icon_pinned = '󰐃',
        minimum_padding = 1,
        maximum_padding = 5,
        maximum_length = 15,
        sort_by = 'insert_at_end',
      },
      highlights = {
        separator = {
          fg = '#434C5E',
        },
        buffer_selected = {
          bold = true,
          italic = false,
        },
        -- separator_selected = {},
        -- tab_selected = {},
        -- background = {},
        -- indicator_selected = {},
        -- fill = {},
        --

        -- Error highlighting (pink theme)
        error = {
          fg = '#ff69b4', -- Hot pink
          bg = '#2d2d2d',
        },
        error_selected = {
          fg = '#ff1493', -- Deep pink for active tab
          bg = '#3d3d3d',
          bold = true,
        },
        error_visible = {
          fg = '#ff69b4',
          bg = '#2d2d2d',
        },

        -- Warning highlighting (optional)
        warning = {
          fg = '#ffb86c',
          bg = '#2d2d2d',
        },
        warning_selected = {
          fg = '#ff8c00',
          bg = '#3d3d3d',
          bold = true,
        },

        -- Normal tab highlighting
        tab = {
          fg = '#6272a4',
          bg = '#282a36',
        },
        tab_selected = {
          fg = '#f8f8f2',
          bg = '#44475a',
          bold = true,
        },

        -- Background
        fill = {
          bg = '#282a36',
        },


      },
    }

    -- Keymaps
    local opts = { noremap = true, silent = true, desc = 'Go to Buffer' }
    -- vim.keymap.set("n", "<Tab>", "<Cmd>BufferLineCycleNext<CR>", {})
    -- vim.keymap.set("n", "<S-Tab>", "<Cmd>BufferLineCyclePrev<CR>", {})
    -- vim.keymap.set('n', '<leader>1', "<cmd>lua require('bufferline').go_to_buffer(1)<CR>", opts)
    -- vim.keymap.set('n', '<leader>2', "<cmd>lua require('bufferline').go_to_buffer(2)<CR>", opts)
    -- vim.keymap.set('n', '<leader>3', "<cmd>lua require('bufferline').go_to_buffer(3)<CR>", opts)
    -- vim.keymap.set('n', '<leader>4', "<cmd>lua require('bufferline').go_to_buffer(4)<CR>", opts)
    -- vim.keymap.set('n', '<leader>5', "<cmd>lua require('bufferline').go_to_buffer(5)<CR>", opts)
    -- vim.keymap.set('n', '<leader>6', "<cmd>lua require('bufferline').go_to_buffer(6)<CR>", opts)
    -- vim.keymap.set('n', '<leader>7', "<cmd>lua require('bufferline').go_to_buffer(7)<CR>", opts)
    -- vim.keymap.set('n', '<leader>8', "<cmd>lua require('bufferline').go_to_buffer(8)<CR>", opts)
    -- vim.keymap.set('n', '<leader>9', "<cmd>lua require('bufferline').go_to_buffer(9)<CR>", opts)
  end,
}