neovim requirement 0.7.0 -> 0.8.0, remove WinSeparator/VertSplit compatibility shims

Author: alex-courtis

README.md

@@ -28,7 +28,7 @@ Take a look at the [wiki](https://github.com/nvim-tree/nvim-tree.lua/wiki) for S
 
 ## Requirements
 
-[neovim >=0.7.0](https://github.com/neovim/neovim/wiki/Installing-Neovim)
+[neovim >=0.8.0](https://github.com/neovim/neovim/wiki/Installing-Neovim)
 
 [nvim-web-devicons](https://github.com/nvim-tree/nvim-web-devicons) is optional and used to display file icons. It requires a [patched font](https://www.nerdfonts.com/). Your terminal emulator must be configured to use that font, usually "Hack Nerd Font"
 

doc/nvim-tree-lua.txt

@@ -58,7 +58,7 @@ Git Integration
 
 Requirements
 
-    This file explorer requires `neovim >= 0.7.0`
+    This file explorer requires `neovim >= 0.8.0`
 
 ==============================================================================
  2. QUICK START                                         *nvim-tree-quickstart*
@@ -1474,8 +1474,7 @@ NvimTreeEndOfBuffer     (NonText)
 NvimTreeCursorLine      (CursorLine)
 NvimTreeCursorLineNr    (CursorLineNr)
 NvimTreeLineNr          (LineNr)
-NvimTreeVertSplit       (VertSplit)     [deprecated, use NvimTreeWinSeparator]
-NvimTreeWinSeparator    (VertSplit)
+NvimTreeWinSeparator    (WinSeparator)
 NvimTreeCursorColumn    (CursorColumn)
 
 There are also links for file highlight with git properties, linked to their

lua/nvim-tree.lua

@@ -745,8 +745,8 @@ local function validate_options(conf)
 end
 
 function M.setup(conf)
-  if vim.fn.has "nvim-0.7" == 0 then
-    vim.notify_once("nvim-tree.lua requires Neovim 0.7 or higher", vim.log.levels.WARN)
+  if vim.fn.has "nvim-0.8" == 0 then
+    vim.notify_once("nvim-tree.lua requires Neovim 0.8 or higher", vim.log.levels.WARN)
     return
   end
 

lua/nvim-tree/colors.lua

@@ -69,8 +69,7 @@ local function get_links()
     CursorLineNr = "CursorLineNr",
     LineNr = "LineNr",
     CursorLine = "CursorLine",
-    VertSplit = "VertSplit",
-    WinSeparator = "NvimTreeVertSplit",
+    WinSeparator = "WinSeparator",
     CursorColumn = "CursorColumn",
     FileDirty = "NvimTreeGitDirty",
     FileNew = "NvimTreeGitNew",

lua/nvim-tree/view.lua

@@ -4,12 +4,6 @@ local events = require "nvim-tree.events"
 local utils = require "nvim-tree.utils"
 local log = require "nvim-tree.log"
 
-local function get_win_sep_hl()
-  -- #1221 WinSeparator not present in nvim 0.6.1 and some builds of 0.7.0
-  local has_win_sep = pcall(vim.cmd, "silent hi WinSeparator")
-  return has_win_sep and "WinSeparator:NvimTreeWinSeparator" or "VertSplit:NvimTreeWinSeparator"
-end
-
 M.View = {
   adaptive_size = false,
   centralize_selection = false,
@@ -38,7 +32,7 @@ M.View = {
       "CursorLine:NvimTreeCursorLine",
       "CursorLineNr:NvimTreeCursorLineNr",
       "LineNr:NvimTreeLineNr",
-      get_win_sep_hl(),
+      "WinSeparator:NvimTreeWinSeparator",
       "StatusLine:NvimTreeStatusLine",
       "StatusLineNC:NvimTreeStatuslineNC",
       "SignColumn:NvimTreeSignColumn",