From a45503b95752055e19186b75a4f9874cd39aa834 Mon Sep 17 00:00:00 2001
From: Folke Lemaitre <folke.lemaitre@gmail.com>
Date: Wed, 22 Oct 2025 08:40:02 +0200
Subject: [PATCH] feat(picker.finder): added assertions that finder is still
 running when receiving results

---
 lua/snacks/picker/core/finder.lua | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/lua/snacks/picker/core/finder.lua b/lua/snacks/picker/core/finder.lua
index 1144b993..d5bb7911 100644
--- a/lua/snacks/picker/core/finder.lua
+++ b/lua/snacks/picker/core/finder.lua
@@ -141,6 +141,8 @@ function M:run(picker)
     return
   end
 
+  local running = true
+
   collectgarbage("stop") -- moar speed
   ---@cast finder snacks.picker.finder.async
   ---@diagnostic disable-next-line: await-in-sync
@@ -151,6 +153,18 @@ function M:run(picker)
       if #self.items >= limit then
         return self.task:abort()
       end
+      if not running then
+        Snacks.debug.backtrace({
+          "Finder yielded after done. This is a bug.",
+          ("- aborted: `%s`"):format(self.task:aborted() or false),
+          "",
+          "# Backtrace",
+        }, {
+          level = vim.log.levels.ERROR,
+          title = "Snacks Picker Finder",
+        })
+        return
+      end
       add(item)
       picker.matcher.task:resume()
       yield = yield or Async.yielder(YIELD_FIND)
@@ -162,6 +176,7 @@ function M:run(picker)
       picker.matcher.task:resume()
       picker:update()
     end
+    running = false
   end)
 end