From 7ebfc507751206165cd147de051ffe901a4ee550 Mon Sep 17 00:00:00 2001
From: Miika Tuominen <miika.km.tuominen@gmail.com>
Date: Thu, 27 Nov 2025 01:47:07 +0200
Subject: [PATCH] fix(lsp): ignore invalid fold ranges (#36708)

---
 runtime/lua/vim/lsp/_folding_range.lua | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/runtime/lua/vim/lsp/_folding_range.lua b/runtime/lua/vim/lsp/_folding_range.lua
index 7efc93f5a6..cac6d7ec2a 100644
--- a/runtime/lua/vim/lsp/_folding_range.lua
+++ b/runtime/lua/vim/lsp/_folding_range.lua
@@ -56,8 +56,8 @@ function State:evaluate()
     for _, range in ipairs(ranges) do
       local start_row = range.startLine
       local end_row = range.endLine
-      -- Adding folds within a single line is not supported by Nvim.
-      if start_row ~= end_row then
+      -- Ignore zero-length or invalid folds
+      if start_row < end_row then
         row_text[start_row] = range.collapsedText
 
         local kind = range.kind