Merge 074a53a66451d3445031633599c9aaa7a5c80f95 into ac421715d364949e72aa030afd83bd77fa49161a

make everything async and non-blocking and also remove the branch name fetching. It is not needed if we use the @{upstream} notation.

lua/config/lsp.lua

@@ -278,6 +278,32 @@ if utils.executable("lua-language-server") then
   }
 end
 
+-- settings for rust-analyzer is copied from https://rust-analyzer.github.io/manual.html#nvim-lsp
+if utils.executable("rust-analyzer") then
+  lspconfig.rust_analyzer.setup {
+    on_attach = custom_attach,
+    settings = {
+      ['rust-analyzer'] = {
+        imports = {
+          granularity = {
+            group = "module",
+          },
+          prefix = "self",
+        },
+        cargo = {
+          buildScripts = {
+            enable = true,
+          },
+        },
+        procMacro = {
+          enable = true
+        },
+      },
+    },
+    capabilities = capabilities,
+  }
+end
+
 -- Change diagnostic signs.
 fn.sign_define("DiagnosticSignError", { text = "🆇", texthl = "DiagnosticSignError" })
 fn.sign_define("DiagnosticSignWarn", { text = "⚠️", texthl = "DiagnosticSignWarn" })

lua/config/lualine.lua

@@ -1,5 +1,71 @@
 local fn = vim.fn
 
+local git_status_cache = {}
+
+local on_exit_fetch = function(result)
+  if result.code == 0 then
+    git_status_cache.fetch_success = true
+  end
+end
+
+local function handle_numeric_result(cache_key)
+  return function(result)
+    if result.code == 0 then
+      git_status_cache[cache_key] = tonumber(result.stdout:match("(%d+)")) or 0
+    end
+  end
+end
+
+local async_cmd = function(cmd_str, on_exit)
+  local cmd = vim.tbl_filter(function(element)
+    return element ~= ""
+  end, vim.split(cmd_str, " "))
+
+  vim.system(cmd, { text = true }, on_exit)
+end
+
+local async_git_status_update = function()
+  -- Fetch the latest changes from the remote repository (replace 'origin' if needed)
+  async_cmd("git fetch origin", on_exit_fetch)
+  if not git_status_cache.fetch_success then
+    return
+  end
+
+  -- Get the number of commits behind
+  -- the @{upstream} notation is inspired by post: https://www.reddit.com/r/neovim/comments/t48x5i/git_branch_aheadbehind_info_status_line_component/
+  -- note that here we should use double dots instead of triple dots
+  local behind_cmd_str = "git rev-list --count HEAD..@{upstream}"
+  async_cmd(behind_cmd_str, handle_numeric_result("behind_count"))
+
+  -- Get the number of commits ahead
+  local ahead_cmd_str = "git rev-list --count @{upstream}..HEAD"
+  async_cmd(ahead_cmd_str, handle_numeric_result("ahead_count"))
+end
+
+local function get_ahead_behind_info()
+  local status = git_status_cache
+  if not status then
+    return ""
+  end
+
+  local msg = ""
+
+  if type(status.ahead_count) == "number" and status.ahead_count > 0 then
+    local ahead_str = string.format("↑[%d] ", status.ahead_count)
+    msg = msg .. ahead_str
+  end
+
+  if type(status.behind_count) == "number" and status.behind_count > 0 then
+    local behind_str = string.format("↓[%d] ", status.behind_count)
+    msg = msg .. behind_str
+  end
+
+  return msg
+end
+
+local timer = vim.loop.new_timer()
+timer:start(0, 1000, async_git_status_update)
+
 local function spell()
   if vim.o.spell then
     return string.format("[SPELL]")
@@ -119,7 +185,7 @@ local virtual_env = function()
 end
 
 local get_active_lsp = function()
-  local msg = "No Active Lsp"
+  local msg = "🚫"
   local buf_ft = vim.api.nvim_get_option_value("filetype", {})
   local clients = vim.lsp.get_clients { bufnr = 0 }
   if next(clients) == nil then
@@ -147,7 +213,12 @@ require("lualine").setup {
   },
   sections = {
     lualine_a = {
-      "mode",
+      {
+        "filename",
+        symbols = {
+          readonly = "[🔒]",
+        },
+      },
     },
     lualine_b = {
       {
@@ -159,21 +230,19 @@ require("lualine").setup {
         color = { gui = "italic,bold" },
       },
       {
-        virtual_env,
-        color = { fg = "black", bg = "#F1CA81" },
-      },
-    },
-    lualine_c = {
-      {
-        "filename",
-        symbols = {
-          readonly = "[🔒]",
-        },
+        get_ahead_behind_info,
+        color = { fg = "#E0C479" },
       },
       {
         "diff",
         source = diff,
       },
+      {
+        virtual_env,
+        color = { fg = "black", bg = "#F1CA81" },
+      },
+    },
+    lualine_c = {
       {
         "%S",
         color = { gui = "bold", fg = "cyan" },
@@ -184,22 +253,29 @@ require("lualine").setup {
       },
     },
     lualine_x = {
-      {
-        ime_state,
-        color = { fg = "black", bg = "#f46868" },
-      },
       {
         get_active_lsp,
-        icon = " LSP:",
+        icon = "📡",
       },
       {
         "diagnostics",
         sources = { "nvim_diagnostic" },
         symbols = { error = "🆇 ", warn = "⚠️ ", info = "ℹ️ ", hint = " " },
       },
+      {
+        trailing_space,
+        color = "WarningMsg",
+      },
+      {
+        mixed_indent,
+        color = "WarningMsg",
+      },
     },
     lualine_y = {
-      { "encoding", fmt = string.upper },
+      {
+        "encoding",
+        fmt = string.upper,
+      },
       {
         "fileformat",
         symbols = {
@@ -209,16 +285,12 @@ require("lualine").setup {
         },
       },
       "filetype",
+      {
+        ime_state,
+        color = { fg = "black", bg = "#f46868" },
+      },
     },
     lualine_z = {
-      {
-        trailing_space,
-        color = "WarningMsg",
-      },
-      {
-        mixed_indent,
-        color = "WarningMsg",
-      },
       "location",
       "progress",
     },

lua/custom-autocmd.lua

@@ -54,6 +54,13 @@ api.nvim_create_autocmd({ "BufWritePre" }, {
   end,
 })
 
+api.nvim_create_autocmd({ "BufWritePre" }, {
+  pattern = {"*.c", "*.cc", "*.cpp", "*.h", "*.rs", "*.py"},
+  callback = function()
+    vim.lsp.buf.format { asnyc = false }
+  end,
+})
+
 -- Automatically reload the file if it is changed outside of Nvim, see https://unix.stackexchange.com/a/383044/221410.
 -- It seems that `checktime` does not work in command line. We need to check if we are in command
 -- line before executing this command, see also https://vi.stackexchange.com/a/20397/15292 .
@@ -135,49 +142,6 @@ api.nvim_create_autocmd("TermOpen", {
   end,
 })
 
--- Return to last cursor position when opening a file, note that here we cannot use BufReadPost
--- as event. It seems that when BufReadPost is triggered, FileType event is still not run.
--- So the filetype for this buffer is empty string.
-api.nvim_create_autocmd("FileType", {
-  group = api.nvim_create_augroup("resume_cursor_position", { clear = true }),
-  pattern = "*",
-  callback = function(ev)
-    local mark_pos = api.nvim_buf_get_mark(ev.buf, '"')
-    local last_cursor_line = mark_pos[1]
-
-    local max_line = vim.fn.line("$")
-    local buf_filetype = api.nvim_get_option_value("filetype", { buf = ev.buf })
-    local buftype = api.nvim_get_option_value("buftype", { buf = ev.buf })
-
-    -- only handle normal files
-    if buf_filetype == "" or buftype ~= "" then
-      return
-    end
-
-    -- Only resume last cursor position when there is no go-to-line command (something like '+23').
-    if vim.fn.match(vim.v.argv, [[\v^\+(\d){1,}$]]) ~= -1 then
-      return
-    end
-
-    if last_cursor_line > 1 and last_cursor_line <= max_line then
-      -- vim.print(string.format("mark_pos: %s", vim.inspect(mark_pos)))
-      -- it seems that without vim.schedule, the cursor position can not be set correctly
-      vim.schedule(function()
-        local status, result = pcall(api.nvim_win_set_cursor, 0, mark_pos)
-        if not status then
-          api.nvim_err_writeln(
-            string.format("Failed to resume cursor position. Context %s, error: %s", vim.inspect(ev), result)
-          )
-        end
-      end)
-      -- the following two ways also seem to work,
-      -- ref: https://www.reddit.com/r/neovim/comments/104lc26/how_can_i_press_escape_key_using_lua/
-      -- vim.api.nvim_feedkeys("g`\"", "n", true)
-      -- vim.fn.execute("normal! g`\"")
-    end
-  end,
-})
-
 local number_toggle_group = api.nvim_create_augroup("numbertoggle", { clear = true })
 api.nvim_create_autocmd({ "BufEnter", "FocusGained", "InsertLeave", "WinEnter" }, {
   pattern = "*",

viml_conf/options.vim

@@ -72,7 +72,7 @@ set wildmode=list:longest
 set scrolloff=3
 
 " Use mouse to select and resize windows, etc.
-set mouse=
+set mouse=n
 set mousemodel=popup  " Set the behaviour of mouse
 set mousescroll=ver:1,hor:0