add bufferline plugin and config

init.vim

@@ -11,6 +11,7 @@ Plug 'williamboman/mason-lspconfig.nvim'
 Plug 'jose-elias-alvarez/null-ls.nvim'
 
 " various plugins
+Plug 'akinsho/bufferline.nvim', { 'tag': 'v3.*' }
 Plug 'gorbit99/codewindow.nvim'
 Plug 'vim-perl/vim-perl', { 'for': 'perl', 'do': 'make clean carp dancer highlight-all-pragmas moose test-more try-tiny' }
 Plug 'neoclide/coc.nvim', {'branch': 'release'}

lua/general.lua

@@ -141,3 +141,59 @@ require("gruvbox").setup({
   transparent_mode = false,
 })
 
+ require('bufferline').setup {
+        options = {
+            mode = "buffers", -- set to "tabs" to only show tabpages instead
+            numbers = "buffer_id",
+            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"
+            indicator = {
+                icon = '▎', -- this should be omitted if indicator style is not 'icon'
+                style = 'icon',
+            },
+            buffer_close_icon = '',
+            modified_icon = '●',
+            close_icon = '',
+            left_trunc_marker = '',
+            right_trunc_marker = '',
+            --- name_formatter can be used to change the buffer's label in the bufferline.
+            --- Please note some names can/will break the
+            --- bufferline so use this at your discretion knowing that it has
+            --- some limitations that will *NOT* be fixed.
+            name_formatter = function(buf)  -- buf contains:
+                  -- name                | str        | the basename of the active file
+                  -- path                | str        | the full path of the active file
+                  -- bufnr (buffer only) | int        | the number of the active buffer
+                  -- buffers (tabs only) | table(int) | the numbers of the buffers in the tab
+                  -- tabnr (tabs only)   | int        | the "handle" of the tab, can be converted to its ordinal number using: `vim.api.nvim_tabpage_get_number(buf.tabnr)`
+            end,
+            max_name_length = 18,
+            max_prefix_length = 15, -- prefix used when a buffer is de-duplicated
+            truncate_names = true, -- whether or not tab names should be truncated
+            tab_size = 18,
+            diagnostics = "coc",
+            diagnostics_update_in_insert = false,
+            -- The diagnostics indicator can be set to nil to keep the buffer name highlight but delete the highlighting
+            color_icons = true, -- whether or not to add the filetype icon highlights
+            show_buffer_icons = true, -- disable filetype icons for buffers
+            show_buffer_close_icons = true,
+            show_buffer_default_icon = true, -- whether or not an unrecognised filetype should show a default icon
+            show_close_icon = false,
+            show_tab_indicators = true,
+            show_duplicate_prefix = true, -- whether to show duplicate buffer prefix
+            persist_buffer_sort = true, -- whether or not custom sorted buffers should persist
+            -- can also be a table containing 2 custom separators
+            -- [focused and unfocused]. eg: { '|', '|' }
+            separator_style = "thick",
+            enforce_regular_tabs = false,
+            always_show_bufferline = true,
+            hover = {
+                enabled = true,
+                delay = 200,
+                reveal = {'close'}
+            },
+            sort_by = 'tabs'
+        }
+    }