From b3e687c954c3080f1696b62a8aaf719815810a8c Mon Sep 17 00:00:00 2001
From: Barrett Ruth <br.barrettruth@gmail.com>
Date: Mon, 2 Feb 2026 00:35:08 -0500
Subject: [PATCH] fix: proper background higlights

---
 lua/fugitive-ts/highlight.lua |  2 +-
 lua/fugitive-ts/init.lua      |  5 +++++
 spec/highlight_spec.lua       | 10 +++++++---
 3 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/lua/fugitive-ts/highlight.lua b/lua/fugitive-ts/highlight.lua
index 8c821fb..f8cc026 100644
--- a/lua/fugitive-ts/highlight.lua
+++ b/lua/fugitive-ts/highlight.lua
@@ -146,7 +146,7 @@ function M.highlight_hunk(bufnr, ns, hunk, opts)
     end
 
     if opts.highlights.background and (prefix == '+' or prefix == '-') then
-      local line_hl = prefix == '+' and 'DiffAdd' or 'DiffDelete'
+      local line_hl = prefix == '+' and 'FugitiveTsAdd' or 'FugitiveTsDelete'
       local extmark_opts = {
         line_hl_group = line_hl,
         priority = 198,
diff --git a/lua/fugitive-ts/init.lua b/lua/fugitive-ts/init.lua
index 1e19c03..e3f053e 100644
--- a/lua/fugitive-ts/init.lua
+++ b/lua/fugitive-ts/init.lua
@@ -183,6 +183,11 @@ function M.setup(opts)
   config = vim.tbl_deep_extend('force', default_config, opts)
   parser.set_debug(config.debug)
   highlight.set_debug(config.debug)
+
+  local diff_add = vim.api.nvim_get_hl(0, { name = 'DiffAdd' })
+  local diff_delete = vim.api.nvim_get_hl(0, { name = 'DiffDelete' })
+  vim.api.nvim_set_hl(0, 'FugitiveTsAdd', { bg = diff_add.bg })
+  vim.api.nvim_set_hl(0, 'FugitiveTsDelete', { bg = diff_delete.bg })
 end
 
 return M
diff --git a/spec/highlight_spec.lua b/spec/highlight_spec.lua
index 38743f6..93c8784 100644
--- a/spec/highlight_spec.lua
+++ b/spec/highlight_spec.lua
@@ -7,6 +7,10 @@ describe('highlight', function()
 
     before_each(function()
       ns = vim.api.nvim_create_namespace('fugitive_ts_test')
+      local diff_add = vim.api.nvim_get_hl(0, { name = 'DiffAdd' })
+      local diff_delete = vim.api.nvim_get_hl(0, { name = 'DiffDelete' })
+      vim.api.nvim_set_hl(0, 'FugitiveTsAdd', { bg = diff_add.bg })
+      vim.api.nvim_set_hl(0, 'FugitiveTsDelete', { bg = diff_delete.bg })
     end)
 
     local function create_buffer(lines)
@@ -318,7 +322,7 @@ describe('highlight', function()
       local extmarks = get_extmarks(bufnr)
       local has_diff_add = false
       for _, mark in ipairs(extmarks) do
-        if mark[4] and mark[4].line_hl_group == 'DiffAdd' then
+        if mark[4] and mark[4].line_hl_group == 'FugitiveTsAdd' then
           has_diff_add = true
           break
         end
@@ -351,7 +355,7 @@ describe('highlight', function()
       local extmarks = get_extmarks(bufnr)
       local has_diff_delete = false
       for _, mark in ipairs(extmarks) do
-        if mark[4] and mark[4].line_hl_group == 'DiffDelete' then
+        if mark[4] and mark[4].line_hl_group == 'FugitiveTsDelete' then
           has_diff_delete = true
           break
         end
@@ -516,7 +520,7 @@ describe('highlight', function()
       local extmarks = get_extmarks(bufnr)
       local has_diff_add = false
       for _, mark in ipairs(extmarks) do
-        if mark[4] and mark[4].line_hl_group == 'DiffAdd' then
+        if mark[4] and mark[4].line_hl_group == 'FugitiveTsAdd' then
           has_diff_add = true
           break
         end