fix: fixes #89, correct window stealing prevention logic

Author: cseickel

lua/neo-tree.lua

@@ -259,7 +259,21 @@ M.setup = function(config)
       end
       local prior_type = vim.api.nvim_buf_get_option(prior_buf, "filetype")
       if prior_type == "neo-tree" and vim.bo.filetype ~= "neo-tree" then
-        local bufname = vim.fn.bufname()
+        local current_tabnr = vim.api.nvim_get_current_tabpage()
+        local neo_tree_tabnr = vim.api.nvim_buf_get_var(prior_buf, "neo_tree_tabnr")
+        if neo_tree_tabnr ~= current_tabnr then
+          -- This a new tab, so the alternate being neo-tree doesn't matter.
+          return
+        end
+        local neo_tree_winid = vim.api.nvim_buf_get_var(prior_buf, "neo_tree_winid")
+        local current_winid = vim.api.nvim_get_current_win()
+        if neo_tree_winid ~= current_winid then
+          -- This is not the neo-tree window, so the alternate being neo-tree doesn't matter.
+          return
+        end
+
+        local bufname = vim.api.nvim_buf_get_name(0)
+        log.debug("redirecting buffer " .. bufname .. " to new split")
         vim.cmd("b#")
         -- Using schedule at this point  fixes problem with syntax
         -- highlighting in the buffer. I also prevents errors with diagnostics

lua/neo-tree/sources/filesystem/lib/filter.lua

@@ -40,7 +40,7 @@ M.show_filter = function(state, search_as_you_type)
         fs.reset_search()
       else
         state.search_pattern = value
-        fs.refresh(function()
+        manager.refresh("filesystem", function()
           -- focus first file
           local nodes = renderer.get_all_visible_nodes(state.tree)
           for _, node in ipairs(nodes) do

lua/neo-tree/ui/renderer.lua

@@ -429,6 +429,9 @@ local create_window = function(state)
   if type(state.bufnr) == "number" then
     local bufname = string.format("neo-tree %s [%s]", state.name, state.tabnr)
     vim.api.nvim_buf_set_name(state.bufnr, bufname)
+    vim.api.nvim_buf_set_var(state.bufnr, "neo_tree_source", state.name)
+    vim.api.nvim_buf_set_var(state.bufnr, "neo_tree_winid", state.winid)
+    vim.api.nvim_buf_set_var(state.bufnr, "neo_tree_tabnr", state.tabnr)
   end
 
   win:on({ "BufDelete" }, function()