fix(event): move all ft logic to the event handler

lua/lazy/core/handler/event.lua

@@ -5,15 +5,22 @@ local Loader = require("lazy.core.loader")
 ---@class LazyEventOpts
 ---@field event string
 ---@field pattern? string
+---@field group? string
 ---@field exclude? string[]
 ---@field data? any
----@field buf? number}
+---@field buffer? number
 
 ---@class LazyEventHandler:LazyHandler
 ---@field events table<string,true>
 ---@field group number
 local M = {}
 
+-- Event dependencies
+M.triggers = {
+  FileType = "BufReadPost",
+  BufReadPost = "BufReadPre",
+}
+
 M.group = vim.api.nvim_create_augroup("lazy_handler_event", { clear = true })
 
 ---@param value string
@@ -33,22 +40,45 @@ function M:_add(value)
       end
       done = true
       Util.track({ [self.type] = value })
-      local groups = M.get_augroups(ev.event, pattern)
+
+      local state = M.get_state(ev.event, pattern, ev.buf, ev.data)
+
       -- load the plugins
       Loader.load(self.active[value], { [self.type] = value })
+
       -- check if any plugin created an event handler for this event and fire the group
-      self:_trigger({
-        event = ev.event,
-        pattern = pattern,
-        exclude = groups,
-        data = ev.data,
-        buf = ev.buf,
-      })
+      for _, s in ipairs(state) do
+        M.trigger(s)
+      end
       Util.track()
     end,
   })
 end
 
+-- Get the current state of the event and all the events that will be fired
+---@param event string
+---@param pattern? string
+---@param buf number
+---@param data any
+function M.get_state(event, pattern, buf, data)
+  local state = {} ---@type LazyEventOpts[]
+  while event do
+    table.insert(state, 1, {
+      event = event,
+      pattern = pattern,
+      exclude = event ~= "FileType" and M.get_augroups(event) or nil,
+      buffer = buf,
+      data = data,
+    })
+    data = nil -- only pass the data to the first event
+    if event == "FileType" then
+      pattern = nil -- only use the pattern for the first event
+    end
+    event = M.triggers[event]
+  end
+  return state
+end
+
 ---@param value string
 function M:_event(value)
   if value == "VeryLazy" then
@@ -61,10 +91,9 @@ end
 
 -- Get all augroups for the events
 ---@param event string
----@param pattern? string
-function M.get_augroups(event, pattern)
+function M.get_augroups(event)
   local groups = {} ---@type string[]
-  for _, autocmd in ipairs(vim.api.nvim_get_autocmds({ event = event, pattern = pattern })) do
+  for _, autocmd in ipairs(vim.api.nvim_get_autocmds({ event = event })) do
     if autocmd.group_name then
       table.insert(groups, autocmd.group_name)
     end
@@ -72,41 +101,48 @@ function M.get_augroups(event, pattern)
   return groups
 end
 
----@param opts LazyEventOpts
-function M:_trigger(opts)
-  M.trigger(opts)
-end
-
+-- Trigger an event. When a group is given, only the events in that group will be triggered.
+-- When exclude is set, the events in those groups will be skipped.
 ---@param opts LazyEventOpts
 function M.trigger(opts)
+  if opts.group or opts.exclude == nil then
+    return M._trigger(opts)
+  end
   local done = {} ---@type table<string,true>
-  for _, autocmd in ipairs(vim.api.nvim_get_autocmds({ event = opts.event, pattern = opts.pattern })) do
+  for _, autocmd in ipairs(vim.api.nvim_get_autocmds({ event = opts.event })) do
     local id = autocmd.event .. ":" .. (autocmd.group or "") ---@type string
     local skip = done[id] or (opts.exclude and vim.tbl_contains(opts.exclude, autocmd.group_name))
     done[id] = true
     if autocmd.group and not skip then
-      if Config.options.debug then
-        Util.info({
-          "# Firing Events",
-          "  - **group:** `" .. autocmd.group_name .. "`",
-          "  - **event:** " .. autocmd.event,
-          opts.pattern and ("  - **pattern:** " .. opts.pattern),
-          opts.buf and ("  - **buf:** " .. opts.buf),
-        })
-      end
-      Util.track({ event = autocmd.group_name })
-      Util.try(function()
-        vim.api.nvim_exec_autocmds(autocmd.event, {
-          -- pattern = opts.pattern,
-          buffer = opts.buf,
-          group = autocmd.group,
-          modeline = false,
-          data = opts.data,
-        })
-        Util.track()
-      end)
+      opts.group = autocmd.group_name
+      M._trigger(opts)
     end
   end
 end
 
+-- Trigger an event
+---@param opts LazyEventOpts
+function M._trigger(opts)
+  if Config.options.debug then
+    Util.info({
+      "# Firing Events",
+      "  - **event:** " .. opts.event,
+      opts.pattern and ("  - **pattern:** " .. opts.pattern),
+      opts.group and ("  - **group:** " .. opts.group),
+      opts.buffer and ("  - **buffer:** " .. opts.buffer),
+    })
+  end
+  Util.track({ event = opts.group or opts.event })
+  Util.try(function()
+    vim.api.nvim_exec_autocmds(opts.event, {
+      -- pattern = opts.pattern,
+      buffer = opts.buffer,
+      group = opts.group,
+      modeline = false,
+      data = opts.data,
+    })
+    Util.track()
+  end)
+end
+
 return M

lua/lazy/core/handler/ft.lua

@@ -1,7 +1,5 @@
 local Event = require("lazy.core.handler.event")
-local Util = require("lazy.core.util")
 local Loader = require("lazy.core.loader")
-local Config = require("lazy.core.config")
 
 ---@class LazyFiletypeHandler:LazyEventHandler
 local M = {}
@@ -20,21 +18,4 @@ function M:add(plugin)
   end
 end
 
----@param opts LazyEventOpts
-function M:_trigger(opts)
-  Util.try(function()
-    if Config.options.debug then
-      Util.info({
-        "# Firing Events",
-        "  - **event:** FileType",
-        opts.pattern and ("  - **pattern:** " .. opts.pattern),
-        opts.buf and ("  - **buf:** " .. opts.buf),
-      })
-    end
-    Util.track({ event = "FileType" })
-    vim.api.nvim_exec_autocmds("FileType", { modeline = false, buffer = opts.buf })
-    Util.track()
-  end)
-end
-
 return M