feat(renderer): indent_markers add a item icon (#1321)

README.md

@@ -113,6 +113,7 @@ require'nvim-tree'.setup { -- BEGIN_DEFAULT_OPTS
       icons = {
         corner = "└ ",
         edge = "│ ",
+        item = "│ ",
         none = "  ",
       },
     },

doc/nvim-tree-lua.txt

@@ -131,6 +131,7 @@ Values may be functions. Warning: this may result in unexpected behaviour.
           icons = {
             corner = "└ ",
             edge = "│ ",
+            item = "│ ",
             none = "  ",
           },
         },
@@ -539,7 +540,7 @@ UI rendering setup
 
     *nvim-tree.renderer.indent_markers.icons*
     Icons shown before the file/directory.
-      Type: `table`, Default: `{ corner = "└ ", edge = "│ ", none = "  ", }`
+      Type: `table`, Default: `{ corner = "└ ", edge = "│ ", item = "│ ", none = "  ", }`
 
     *nvim-tree.renderer.icons*
     Configuration options for icons.

lua/nvim-tree.lua

@@ -392,6 +392,7 @@ local DEFAULT_OPTS = { -- BEGIN_DEFAULT_OPTS
       icons = {
         corner = "└ ",
         edge = "│ ",
+        item = "│ ",
         none = "  ",
       },
     },

lua/nvim-tree/renderer/components/padding.lua

@@ -22,6 +22,8 @@ local function get_padding_indent_markers(depth, idx, nodes_number, _, markers)
     for i = 1, rdepth do
       if idx == nodes_number and i == rdepth then
         padding = padding .. M.config.indent_markers.icons.corner
+      elseif markers[i] and i == rdepth then
+        padding = padding .. M.config.indent_markers.icons.item
       elseif markers[i] then
         padding = padding .. M.config.indent_markers.icons.edge
       else