fix buffer management when tab creation with :tab sbuffer command

tiagovla/scope.nvim#2

lua/tabscope/buffer-manager.lua

@@ -61,7 +61,7 @@ local function new()
 
   m.ignore_events = false
 
-  u.set_autocmd("BufEnter", function()
+  u.set_improved_bufenter_autocmd(function()
     if not m.ignore_events then
       m._try_to_track_current_buffer()
     end

lua/tabscope/tab-manager.lua

@@ -12,6 +12,8 @@ local function new(buffer_manager)
       return
     end
 
+    require("utilities").notify("changed")
+
     local previous_buffers = m.buffer_manager.tab_get_buffers(previous_tab)
     local current_buffers = m.buffer_manager.tab_get_buffers(0)
 
@@ -28,7 +30,7 @@ local function new(buffer_manager)
     m.buffer_manager.ignore_events = false
   end
 
-  u.set_autocmd("BufEnter", m.try_to_switch_tab)
+  u.set_improved_bufenter_autocmd(m.try_to_switch_tab)
   u.set_autocmd("TabLeave", function()
     m.previous_tab = vim.api.nvim_get_current_tabpage()
   end)

lua/tabscope/utils.lua

@@ -1,15 +1,47 @@
 local M = {}
 
--- Creates auto command
-M.set_autocmd = function(event, callback)
-  if not M._group then
-    M._group = vim.api.nvim_create_augroup("TabScopeNvim", {})
+M._get_augroup = function()
+  if not M._augroup then
+    M._augroup = vim.api.nvim_create_augroup("TabScopeNvim", {})
   end
+  return M._augroup
+end
 
+-- Creates auto command
+M.set_autocmd = function(event, callback)
   vim.api.nvim_create_autocmd(event, {
-    group = M._group,
+    group = M._get_augroup(),
     callback = callback,
   })
 end
 
+-- Creates auto command that triggered like bufEnter, but it triggers
+-- if buffer changes to the same buffer (like :sbuffer / :tab sbuffer)
+M.set_improved_bufenter_autocmd = function(callback)
+  local triggered = false
+
+  vim.api.nvim_create_autocmd("BufEnter", {
+    group = M._get_augroup(),
+    callback = function()
+      triggered = true
+      callback()
+    end,
+  })
+
+  vim.api.nvim_create_autocmd("WinEnter", {
+    group = M._get_augroup(),
+    callback = function()
+      triggered = false
+      vim.schedule(function()
+        if triggered then
+          return
+        end
+        triggered = true
+        callback()
+      end)
+    end,
+  })
+
+end
+
 return M