add view.indent_markers (#1134)

README.md

@@ -38,7 +38,6 @@ Note that options under the `g:` command should be set **BEFORE** running the se
 These are being migrated to the setup function incrementally, check [this issue](https://github.com/kyazdani42/nvim-tree.lua/issues/674) if you encounter any problems related to configs not working after update.
 ```vim
 " vimrc
-let g:nvim_tree_indent_markers = 1 "0 by default, this option shows indent markers when folders are open
 let g:nvim_tree_git_hl = 1 "0 by default, will enable file highlight for git attributes (can be used without the icons).
 let g:nvim_tree_highlight_opened_files = 1 "0 by default, will enable folder and file icon highlight for opened files/directories.
 let g:nvim_tree_root_folder_modifier = ':~' "This is the default. See :help filename-modifiers for more options
@@ -59,7 +58,7 @@ let g:nvim_tree_show_icons = {
 "1 by default, notice that if 'files' is 1, it will only display
 "if nvim-web-devicons is installed and on your runtimepath.
 "if folder is 1, you can also tell folder_arrows 1 to show small arrows next to the folder icons.
-"but this will not work when you set indent_markers (because of UI conflict)
+"but this will not work when you set renderer.indent_markers.enable (because of UI conflict)
 
 " default will show icon by default if no icon is provided
 " default shows no icon by default
@@ -144,6 +143,16 @@ require'nvim-tree'.setup { -- BEGIN_DEFAULT_OPTS
       },
     },
   },
+  renderer = {
+    indent_markers = {
+      enable = false,
+      icons = {
+        corner = "└ ",
+        edge = "│ ",
+        none = "  ",
+      },
+    },
+  },
   hijack_directories = {
     enable = true,
     auto_open = true,

doc/nvim-tree-lua.txt

@@ -111,6 +111,16 @@ function.
           },
         },
       },
+      renderer = {
+        indent_markers = {
+          enable = false,
+          icons = {
+            corner = "└ ",
+            edge = "│ ",
+            none = "  ",
+          },
+        },
+      },
       hijack_directories = {
         enable = true,
         auto_open = true,
@@ -408,6 +418,19 @@ Here is a list of the options available in the setup call:
         type: list of `{ key: table of strings or string, mode: string (vim-mode), cb: callback function as a string }`
         default: `{}`
 
+*nvim-tree.renderer*
+- |renderer|: UI rendering setup
+
+  - |renderer.indent_markers|: configuration options for tree indent markers
+
+    - |renderer.indent_markers.enable|: display indent markers when folders are open
+        type: `boolean`
+        default: `false`
+
+    - |renderer.indent_markers.icons|: icons shown before the file/directory
+        type: `table`
+	default: `{ corner = "└ ", edge = "│ ", none = "  ", }`
+
 *nvim-tree.filters*
 |filters|: filtering options
 
@@ -543,7 +566,7 @@ is installed and in your |runtimepath|
 (https://github.com/kyazdani42/nvim-web-devicons)
 if folder is 1, you can also set `folder_arrows = 1` to show small arrows
 next to the folder icons but this will not work when you set
-|g:nvim_tree_indent_markers| (because of UI conflict).
+|renderer.indent_markers.enable| (because of UI conflict).
 
 |g:nvim_tree_highlight_opened_files|			        *g:nvim_tree_highlight_opened_files*
 
@@ -599,11 +622,6 @@ You can set icons for:
 You can enable file highlight for git attributes by setting this property.
 This can be used with or without the icons.
 
-|g:nvim_tree_indent_markers|                   *g:nvim_tree_indent_markers*
-
-Can be `0` or `1`. When `1`, will display indent markers when folders are open
-Default is 0
-
 |g:nvim_tree_root_folder_modifier|		     *g:nvim_tree_root_folder_modifier*
 
 In what format to show root folder. See `:help filename-modifiers` for

lua/nvim-tree.lua

@@ -336,6 +336,16 @@ local DEFAULT_OPTS = { -- BEGIN_DEFAULT_OPTS
       },
     },
   },
+  renderer = {
+    indent_markers = {
+      enable = false,
+      icons = {
+        corner = "└ ",
+        edge = "│ ",
+        none = "  ",
+      },
+    },
+  },
   hijack_directories = {
     enable = true,
     auto_open = true,
@@ -446,6 +456,7 @@ function M.setup(conf)
   require("nvim-tree.git").setup(opts)
   require("nvim-tree.view").setup(opts)
   require("nvim-tree.lib").setup(opts)
+  require("nvim-tree.renderer").setup(opts)
 
   setup_vim_commands()
   setup_autocommands(opts)

lua/nvim-tree/legacy.lua

@@ -169,6 +169,13 @@ local migrations = {
       o.actions.change_dir.global = vim.g.nvim_tree_change_dir_global == 1
     end
   end,
+
+  nvim_tree_indent_markers = function(o)
+    utils.table_create_missing(o, "renderer.indent_markers")
+    if o.renderer.indent_markers.enable == nil then
+      o.renderer.indent_markers.enable = vim.g.nvim_tree_indent_markers == 1
+    end
+  end,
 }
 
 function M.migrate_legacy_options(opts)

lua/nvim-tree/renderer/init.lua

@@ -256,7 +256,7 @@ function M.draw()
   hl = {}
 
   icon_state = _icons.get_config()
-  local show_arrows = vim.g.nvim_tree_indent_markers ~= 1
+  local show_arrows = not M.config.indent_markers.enable
     and icon_state.show_folder_icon
     and icon_state.show_folder_arrows
   _padding.reload_padding_function()
@@ -289,4 +289,12 @@ function M.render_hl(bufnr)
   end
 end
 
+function M.setup(opts)
+  M.config = {
+    indent_markers = opts.renderer.indent_markers,
+  }
+
+  require("nvim-tree.renderer.padding").setup(opts)
+end
+
 return M

lua/nvim-tree/renderer/padding.lua

@@ -21,11 +21,11 @@ local function get_padding_indent_markers(depth, idx, tree, _, markers)
     markers[rdepth] = idx ~= #tree.nodes
     for i = 1, rdepth do
       if idx == #tree.nodes and i == rdepth then
-        padding = padding .. "└ "
+        padding = padding .. M.config.indent_markers.icons.corner
       elseif markers[i] then
-        padding = padding .. "│ "
+        padding = padding .. M.config.indent_markers.icons.edge
       else
-        padding = padding .. "  "
+        padding = padding .. M.config.indent_markers.icons.none
       end
     end
   end
@@ -39,9 +39,15 @@ function M.reload_padding_function()
     M.get_padding = get_padding_arrows(icon_state)
   end
 
-  if vim.g.nvim_tree_indent_markers == 1 then
+  if M.config.indent_markers.enable then
     M.get_padding = get_padding_indent_markers
   end
 end
 
+function M.setup(opts)
+  M.config = {
+    indent_markers = opts.renderer.indent_markers,
+  }
+end
+
 return M