From 48992fd3e82fa0f2ca22679f909823d8b37171d4 Mon Sep 17 00:00:00 2001
From: Alexander Courtis <alex@courtis.org>
Date: Mon, 17 Oct 2022 12:31:41 +1100
Subject: [PATCH] fix(#1639): ensure tree autocommands match filetype as well
 as name (#1640)

* fix(#1629): nvim start with file named *NvimTree* opens tree instead of buffer

* Revert "fix(#1629): nvim start with file named *NvimTree* opens tree instead of buffer"

This reverts commit e7136078f7bdf6f90272cc57667270c53fef039b.

* fix(#1629): nvim start with file named *NvimTree* treats file as tree

* fix(#1629): nvim start with file named *NvimTree* treats file as tree

* fix(#1639): ensure tree autocommands match filetype as well as name

* fix(#1639): fix bad merge

* fix(#1639): ensure tree autocommands match filetype as well as name
---
 lua/nvim-tree.lua                             | 29 ++++++++++++++++---
 lua/nvim-tree/live-filter.lua                 |  7 ++++-
 .../renderer/components/full-name.lua         |  9 ++++--
 lua/nvim-tree/utils.lua                       | 16 ++++++++--
 4 files changed, 51 insertions(+), 10 deletions(-)

diff --git a/lua/nvim-tree.lua b/lua/nvim-tree.lua
index 06d0cf01..6e192419 100644
--- a/lua/nvim-tree.lua
+++ b/lua/nvim-tree.lua
@@ -339,7 +339,7 @@ local function setup_autocommands(opts)
   create_nvim_tree_autocmd("BufWipeout", {
     pattern = "NvimTree_*",
     callback = function()
-      if vim.bo.filetype == "NvimTree" then
+      if utils.is_nvim_tree_buf(0) then
         view._prevent_buffer_override()
       end
     end,
@@ -362,7 +362,14 @@ local function setup_autocommands(opts)
     create_nvim_tree_autocmd("TabEnter", { callback = vim.schedule_wrap(M.tab_change) })
   end
   if opts.hijack_cursor then
-    create_nvim_tree_autocmd("CursorMoved", { pattern = "NvimTree_*", callback = M.place_cursor_on_node })
+    create_nvim_tree_autocmd("CursorMoved", {
+      pattern = "NvimTree_*",
+      callback = function()
+        if utils.is_nvim_tree_buf(0) then
+          M.place_cursor_on_node()
+        end
+      end,
+    })
   end
   if opts.sync_root_with_cwd then
     create_nvim_tree_autocmd("DirChanged", {
@@ -384,7 +391,14 @@ local function setup_autocommands(opts)
   end
 
   if opts.reload_on_bufenter and not has_watchers then
-    create_nvim_tree_autocmd("BufEnter", { pattern = "NvimTree_*", callback = reloaders.reload_explorer })
+    create_nvim_tree_autocmd("BufEnter", {
+      pattern = "NvimTree_*",
+      callback = function()
+        if utils.is_nvim_tree_buf(0) then
+          reloaders.reload_explorer()
+        end
+      end,
+    })
   end
 
   if opts.view.centralize_selection then
@@ -418,7 +432,14 @@ local function setup_autocommands(opts)
   end
 
   if opts.view.float.enable and opts.view.float.quit_on_focus_loss then
-    create_nvim_tree_autocmd("WinLeave", { pattern = "NvimTree_*", callback = view.close })
+    create_nvim_tree_autocmd("WinLeave", {
+      pattern = "NvimTree_*",
+      callback = function()
+        if utils.is_nvim_tree_buf(0) then
+          view.close()
+        end
+      end,
+    })
   end
 end
 
diff --git a/lua/nvim-tree/live-filter.lua b/lua/nvim-tree/live-filter.lua
index 4d8ae7cf..9143d9fe 100644
--- a/lua/nvim-tree/live-filter.lua
+++ b/lua/nvim-tree/live-filter.lua
@@ -1,6 +1,7 @@
 local a = vim.api
 
 local view = require "nvim-tree.view"
+local utils = require "nvim-tree.utils"
 local Iterator = require "nvim-tree.iterators.node-iterator"
 
 local M = {
@@ -30,7 +31,11 @@ local function remove_overlay()
     a.nvim_create_autocmd("WinLeave", {
       pattern = "NvimTree_*",
       group = a.nvim_create_augroup("NvimTree", { clear = false }),
-      callback = view.close,
+      callback = function()
+        if utils.is_nvim_tree_buf(0) then
+          view.close()
+        end
+      end,
     })
   end
 
diff --git a/lua/nvim-tree/renderer/components/full-name.lua b/lua/nvim-tree/renderer/components/full-name.lua
index b589b47c..41c2425b 100644
--- a/lua/nvim-tree/renderer/components/full-name.lua
+++ b/lua/nvim-tree/renderer/components/full-name.lua
@@ -2,6 +2,7 @@ local M = {}
 
 local api = vim.api
 local fn = vim.fn
+local utils = require "nvim-tree.utils"
 
 local function hide(win)
   if win then
@@ -67,7 +68,9 @@ M.setup = function(opts)
     group = group,
     pattern = { "NvimTree_*" },
     callback = function()
-      hide(M.popup_win)
+      if utils.is_nvim_tree_buf(0) then
+        hide(M.popup_win)
+      end
     end,
   })
 
@@ -75,7 +78,9 @@ M.setup = function(opts)
     group = group,
     pattern = { "NvimTree_*" },
     callback = function()
-      show()
+      if utils.is_nvim_tree_buf(0) then
+        show()
+      end
     end,
   })
 end
diff --git a/lua/nvim-tree/utils.lua b/lua/nvim-tree/utils.lua
index 6d6af956..e81327ff 100644
--- a/lua/nvim-tree/utils.lua
+++ b/lua/nvim-tree/utils.lua
@@ -468,13 +468,23 @@ function M.inject_node(f)
   end
 end
 
----Is the buffer a tree? Like /path/to/NvimTree_2 and not a readable file.
----@param bufnr number
+---Is the buffer named NvimTree_[0-9]+ a tree? filetype is "NvimTree" or not readable file.
+---This is cheap, as the readable test should only ever be needed when resuming a vim session.
+---@param bufnr number may be 0 or nil for current
 ---@return boolean
 function M.is_nvim_tree_buf(bufnr)
+  if bufnr == nil then
+    bufnr = 0
+  end
   if vim.fn.bufexists(bufnr) then
     local bufname = a.nvim_buf_get_name(bufnr)
-    return vim.fn.fnamemodify(bufname, ":t"):match "^NvimTree_[0-9]+$" and vim.fn.filereadable(bufname) == 0
+    if vim.fn.fnamemodify(bufname, ":t"):match "^NvimTree_[0-9]+$" then
+      if vim.bo[bufnr].filetype == "NvimTree" then
+        return true
+      elseif vim.fn.filereadable(bufname) == 0 then
+        return true
+      end
+    end
   end
   return false
 end