From 12509903a5723a876abd65953109f926f4634c30 Mon Sep 17 00:00:00 2001
From: abeldekat <58370433+abeldekat@users.noreply.github.com>
Date: Thu, 23 Jan 2025 07:22:37 +0000
Subject: [PATCH] fix: Outdated completion item with mini.snippets (#2126)

* fix: Outdated completion item with mini.snippets

* fix: Outdated completion item with mini.snippets. Prevent completion suggestions directly after snippet expand

* fix: Outdated completion item with mini.snippets. Undo changes

* fix: Outdated completion item with mini.snippets. The cmp.resubscribe solution

---------

Co-authored-by: abeldekat <abel@nomail.com>
---
 README.md                 | 10 ++++++++++
 doc/cmp.txt               | 10 ++++++++++
 lua/cmp/init.lua          |  6 ++++++
 lua/cmp/utils/autocmd.lua | 38 +++++++++++++++++++++++++++++++-------
 4 files changed, 57 insertions(+), 7 deletions(-)

diff --git a/README.md b/README.md
index fcbaf5e..1f534d6 100644
--- a/README.md
+++ b/README.md
@@ -46,6 +46,10 @@ Plug 'hrsh7th/vim-vsnip'
 " Plug 'L3MON4D3/LuaSnip'
 " Plug 'saadparwaiz1/cmp_luasnip'
 
+" For mini.snippets users.
+" Plug 'echasnovski/mini.snippets'
+" Plug 'abeldekat/cmp-mini-snippets'
+
 " For ultisnips users.
 " Plug 'SirVer/ultisnips'
 " Plug 'quangnguyen30192/cmp-nvim-ultisnips'
@@ -69,6 +73,12 @@ lua <<EOF
         -- require('snippy').expand_snippet(args.body) -- For `snippy` users.
         -- vim.fn["UltiSnips#Anon"](args.body) -- For `ultisnips` users.
         -- vim.snippet.expand(args.body) -- For native neovim snippets (Neovim v0.10+)
+
+        -- For `mini.snippets` users:
+        -- local insert = MiniSnippets.config.expand.insert or MiniSnippets.default_insert
+        -- insert({ body = args.body }) -- Insert at cursor
+        -- cmp.resubscribe({ "TextChangedI", "TextChangedP" })
+        -- require("cmp.config").set_onetime({ sources = {} })
       end,
     },
     window = {
diff --git a/doc/cmp.txt b/doc/cmp.txt
index e16bbd9..da2a703 100644
--- a/doc/cmp.txt
+++ b/doc/cmp.txt
@@ -62,6 +62,10 @@ A recommended configuration can be found below.
   " Plug 'L3MON4D3/LuaSnip'
   " Plug 'saadparwaiz1/cmp_luasnip'
 
+  " For mini.snippets users.
+  " Plug 'echasnovski/mini.snippets'
+  " Plug 'abeldekat/cmp-mini-snippets'
+
   " For snippy users.
   " Plug 'dcampos/nvim-snippy'
   " Plug 'dcampos/cmp-snippy'
@@ -86,6 +90,12 @@ A recommended configuration can be found below.
           -- require'snippy'.expand_snippet(args.body) -- For `snippy` users.
           -- vim.fn["UltiSnips#Anon"](args.body) -- For `ultisnips` users.
           -- vim.snippet.expand(args.body) -- For native neovim snippets (Neovim v0.10+)
+
+          -- For `mini.snippets` users:
+          -- local insert = MiniSnippets.config.expand.insert or MiniSnippets.default_insert
+          -- insert({ body = args.body }) -- Insert at cursor
+          -- cmp.resubscribe({ "TextChangedI", "TextChangedP" })
+          -- require("cmp.config").set_onetime({ sources = {} })
         end,
       },
       window = {
diff --git a/lua/cmp/init.lua b/lua/cmp/init.lua
index 0c1ac1a..debcf5c 100644
--- a/lua/cmp/init.lua
+++ b/lua/cmp/init.lua
@@ -328,6 +328,12 @@ cmp.status = function()
   end
 end
 
+---Ensures that cmp is the last receiver of the events specified.
+---@param events string[]
+cmp.resubscribe = function(events)
+  autocmd.resubscribe(events)
+end
+
 ---@type cmp.Setup
 cmp.setup = setmetatable({
   global = function(c)
diff --git a/lua/cmp/utils/autocmd.lua b/lua/cmp/utils/autocmd.lua
index 438e231..f039448 100644
--- a/lua/cmp/utils/autocmd.lua
+++ b/lua/cmp/utils/autocmd.lua
@@ -6,6 +6,16 @@ autocmd.group = vim.api.nvim_create_augroup('___cmp___', { clear = true })
 
 autocmd.events = {}
 
+local function create_autocmd(event)
+  vim.api.nvim_create_autocmd(event, {
+    desc = ('nvim-cmp: autocmd: %s'):format(event),
+    group = autocmd.group,
+    callback = function()
+      autocmd.emit(event)
+    end,
+  })
+end
+
 ---Subscribe autocmd
 ---@param events string|string[]
 ---@param callback function
@@ -16,13 +26,7 @@ autocmd.subscribe = function(events, callback)
   for _, event in ipairs(events) do
     if not autocmd.events[event] then
       autocmd.events[event] = {}
-      vim.api.nvim_create_autocmd(event, {
-        desc = ('nvim-cmp: autocmd: %s'):format(event),
-        group = autocmd.group,
-        callback = function()
-          autocmd.emit(event)
-        end,
-      })
+      create_autocmd(event)
     end
     table.insert(autocmd.events[event], callback)
   end
@@ -50,4 +54,24 @@ autocmd.emit = function(event)
   end
 end
 
+---Resubscribe to events
+---@param events string[]
+autocmd.resubscribe = function(events)
+  -- Delete the autocommands if present
+  local found = vim.api.nvim_get_autocmds({
+    group = autocmd.group,
+    event = events,
+  })
+  for _, to_delete in ipairs(found) do
+    vim.api.nvim_del_autocmd(to_delete.id)
+  end
+
+  -- Recreate if event is known
+  for _, event in ipairs(events) do
+    if autocmd.events[event] then
+      create_autocmd(event)
+    end
+  end
+end
+
 return autocmd