Made sure we redrew things, added in a contingency in 'save' for times when we load a non-existent file, and added some checks.

data/core/dirwatch.lua

@@ -35,9 +35,11 @@ end
 -- so as not to run into system limits (like in the autoreload plugin).
 function dirwatch:watch(directory, bool)
   if bool == false then return self:unwatch(directory) end
+  local info = system.get_file_info(directory)
+  if not info then return end
   if not self.watched[directory] and not self.scanned[directory] then
     if PLATFORM == "Windows" then
-      if system.get_file_info(directory).type ~= "dir" then return self:scan(directory) end
+      if info.type ~= "dir" then return self:scan(directory) end
       if not self.windows_watch_top or directory:find(self.windows_watch_top, 1, true) ~= 1 then
         -- Get the highest level of directory that is common to this directory, and the original.
         local target = directory

data/plugins/autoreload.lua

@@ -3,6 +3,7 @@ local core = require "core"
 local config = require "core.config"
 local style = require "core.style"
 local Doc = require "core.doc"
+local Node = require "core.node"
 local common = require "core.common"
 local dirwatch = require "core.dirwatch"
 
@@ -10,31 +11,30 @@ config.plugins.autoreload = common.merge({
   always_show_nagview = false
 }, config.plugins.autoreload)
 
-local function get_project_doc(doc)
-  for i, v in ipairs(core.project_directories) do
-    if doc.abs_filename:find(v.abs_filename, 1, true) == 1 then return v end
-  end
-  return nil
-end
-
 local watch = dirwatch.new()
 local times = setmetatable({}, { __mode = "k" })
 local visible = setmetatable({}, { __mode = "k" })
 
+local function get_project_doc_watch(doc)
+  for i, v in ipairs(core.project_directories) do
+    if doc.abs_filename:find(v.name, 1, true) == 1 then return v.watch end
+  end
+  return watch
+end
+
 local function update_time(doc)
-  local info = system.get_file_info(doc.filename)
-  times[doc] = info.modified
+  times[doc] = system.get_file_info(doc.filename).modified
 end
 
 local function reload_doc(doc)
   doc:reload()
   update_time(doc)
+  core.redraw = true
   core.log_quiet("Auto-reloaded doc \"%s\"", doc.filename)
 end
 
 local function check_prompt_reload(doc)
-  if doc or (core.active_view.doc and core.active_view.doc.deferred_reload) then
-    doc = doc or core.active_view.doc
+  if doc and doc.deferred_reload then
     core.nag_view:show("File Changed", doc.filename .. " has changed. Reload this file?", {
       { font = style.font, text = "Yes", default_yes = true },
       { font = style.font, text = "No" , default_no = true }
@@ -45,32 +45,11 @@ local function check_prompt_reload(doc)
   end
 end
 
-local function doc_becomes_visible(doc)
-  if doc and not visible[doc] and doc.abs_filename then
-    visible[doc] = true
-    check_prompt_reload(doc)
-    local dir = get_project_doc(doc)
-    (dir and dir.watch or watch):watch(doc.abs_filename)
-  end
-end
-
-local function doc_becomes_invisible(doc)
-  if doc and visible[doc] then
-    visible[doc] = false
-    local dir = get_project_doc(doc)
-    (dir and dir.watch or watch):unwatch(doc.abs_filename)
-  end
-end
-
->>>>>>> Stashed changes
-local function check_if_modified(doc)
-  local info = system.get_file_info(doc.filename or "")
-  if info and times[doc] ~= info.modified then
-    if not doc:is_dirty() and not config.plugins.autoreload.always_show_nagview then
-      reload_doc(doc)
-    else
-      doc.deferred_reload = true
-    end
+local function doc_changes_visiblity(doc, visibility)
+  if doc and visible[doc] ~= visibility and doc.abs_filename then
+    visible[doc] = visibility
+    if visibility then check_prompt_reload(doc) end
+    get_project_doc_watch(doc):watch(doc.abs_filename, visibility)
   end
 end
 
@@ -79,25 +58,32 @@ function dirwatch:check(change_callback, ...)
   on_check(self, function(dir)
     for _, doc in ipairs(core.docs) do
       if dir == common.dirname(doc.abs_filename) or dir == doc.abs_filename then
-        check_if_modified(doc)
+        local info = system.get_file_info(doc.filename or "")
+        if info and times[doc] ~= info.modified then
+          if not doc:is_dirty() and not config.plugins.autoreload.always_show_nagview then
+            reload_doc(doc)
+          else
+            doc.deferred_reload = true
+            if doc == core.active_view.doc then check_prompt_reload(doc) end
+          end
+        end
       end
     end
     change_callback(dir)
   end, ...)
-  check_prompt_reload()
 end
 
 local core_set_active_view = core.set_active_view
 function core.set_active_view(view)
   core_set_active_view(view)
-  doc_becomes_visible(view.doc)
+  doc_changes_visiblity(view.doc, true)
 end
 
 local node_set_active_view = Node.set_active_view
 function Node:set_active_view(view)
-  doc_becomes_invisible(self.active_view.doc)
+  if self.active_view then doc_changes_visiblity(self.active_view.doc, false) end
   node_set_active_view(self, view)
-  doc_becomes_visible(self.active_view.doc)
+  doc_changes_visiblity(self.active_view.doc, true)
 end
 
 core.add_thread(function()
@@ -121,6 +107,8 @@ end
 
 Doc.save = function(self, ...)
   local res = save(self, ...)
+  -- if starting with an unsaved document with a filename.
+  if not times[self] then get_project_doc_watch(self):watch(self.abs_filename, true) end
   update_time(self)
   return res
 end

src/api/dirmonitor/inotify.c

@@ -47,7 +47,7 @@ int translate_changes_dirmonitor(struct dirmonitor_internal* monitor, char* buff
 
 
 int add_dirmonitor(struct dirmonitor_internal* monitor, const char* path) {
-  return inotify_add_watch(monitor->fd, path, IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO);
+  return inotify_add_watch(monitor->fd, path, IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MODIFY | IN_MOVED_TO);
 }