From fe1f5f57ade2820656e063bbc2565702f016f462 Mon Sep 17 00:00:00 2001
From: xzb <2598514867@qq.com>
Date: Sat, 1 Feb 2025 20:57:03 +0800
Subject: [PATCH 01/16] treesitter

---
 README.md                  |  5 ++-
 lua/quicker/config.lua     |  1 +
 lua/quicker/display.lua    | 32 +++++++++++++-
 lua/quicker/treesitter.lua | 91 ++++++++++++++++++++++++++++++++++++++
 4 files changed, 126 insertions(+), 3 deletions(-)
 create mode 100644 lua/quicker/treesitter.lua

diff --git a/README.md b/README.md
index 9ceaf2a..75c75b6 100644
--- a/README.md
+++ b/README.md
@@ -198,7 +198,10 @@ require("quicker").setup({
   -- Keep the cursor to the right of the filename and lnum columns
   constrain_cursor = true,
   highlight = {
-    -- Use treesitter highlighting
+    -- Attach parser to qf buffer, highlight text in real time as you edit.
+    -- If this is true, other highlight options are ignored.
+    attach_parser = true,
+    -- Query treesitter highlight groups using string parser, only update after you save or refresh.
     treesitter = true,
     -- Use LSP semantic token highlighting
     lsp = true,
diff --git a/lua/quicker/config.lua b/lua/quicker/config.lua
index f60b978..a42c555 100644
--- a/lua/quicker/config.lua
+++ b/lua/quicker/config.lua
@@ -154,6 +154,7 @@ end
 ---@field soft_end? string
 
 ---@class (exact) quicker.HighlightConfig
+---@field attach_parser boolean
 ---@field treesitter boolean
 ---@field lsp boolean
 ---@field load_buffers boolean
diff --git a/lua/quicker/display.lua b/lua/quicker/display.lua
index 5c551d3..4519a8f 100644
--- a/lua/quicker/display.lua
+++ b/lua/quicker/display.lua
@@ -5,7 +5,9 @@ local util = require("quicker.util")
 
 local M = {}
 
-local EM_QUAD = " "
+-- A EM_QUAD and a space, we include an extra space before the real text, because it
+-- avoids strange cases such as no highlight when insert at start of qf text.
+local EM_QUAD = "  "
 local EM_QUAD_LEN = EM_QUAD:len()
 M.EM_QUAD = EM_QUAD
 M.EM_QUAD_LEN = EM_QUAD_LEN
@@ -267,6 +269,8 @@ local function highlight_buffer_when_entered(qfbufnr, info)
       vim.b[qfbufnr].pending_highlight = nil
       info.start_idx = 1
       info.end_idx = vim.api.nvim_buf_line_count(qfbufnr)
+      info.regions = {}
+      info.empty_regions = {}
       schedule_highlights(info)
     end,
   })
@@ -339,7 +343,22 @@ add_qf_highlights = function(info)
         loaded = true
       end
 
-      if loaded then
+      local ft = vim.filetype.match({ buf = item.bufnr })
+      -- If attach_parser is true, we should not apply lsp highlight or query ts highlights
+      -- from loaded buffers, as they will overwrite each other.
+      if config.highlight.attach_parser and ft then
+        info.regions[ft] = info.regions[ft] or {}
+        info.empty_regions[ft] = info.empty_regions[ft] or {}
+        local filename = vim.split(line, EM_QUAD, { plain = true })[1]
+        table.insert(info.regions[ft], {
+          {
+            i - 1,
+            filename:len() + EM_QUAD_LEN - 1, -- skip EM_QUAD
+            i - 1,
+            #line,
+          },
+        })
+      elseif loaded then
         add_item_highlights_from_buf(qfbufnr, item, line, i)
       elseif config.highlight.treesitter then
         local filename = vim.split(line, EM_QUAD, { plain = true })[1]
@@ -383,6 +402,11 @@ add_qf_highlights = function(info)
       return
     end
   end
+  if config.highlight.attach_parser then
+    -- cleanup previous regions each time we call setqflist.
+    require("quicker.treesitter").attach(qf_list.qfbufnr, info.empty_regions)
+    require("quicker.treesitter").attach(qf_list.qfbufnr, info.regions)
+  end
 
   vim.api.nvim_buf_clear_namespace(qf_list.qfbufnr, ns, info.end_idx, -1)
 end
@@ -425,6 +449,8 @@ end
 ---@field id integer
 ---@field start_idx integer
 ---@field end_idx integer
+---@field regions table<string, number[][][]>
+---@field empty_regions table<string, number[][][]>
 ---@field winid integer
 ---@field quickfix 1|0
 ---@field force_bufload? boolean field injected by us to control if we're forcing a bufload for the syntax highlighting
@@ -588,6 +614,8 @@ function M.quickfixtextfunc(info)
 
   -- If we just rendered the last item, add highlights
   if info.end_idx == #items then
+    info.regions = {}
+    info.empty_regions = {}
     schedule_highlights(info)
 
     if qf_list.qfbufnr > 0 then
diff --git a/lua/quicker/treesitter.lua b/lua/quicker/treesitter.lua
new file mode 100644
index 0000000..d0c7c8c
--- /dev/null
+++ b/lua/quicker/treesitter.lua
@@ -0,0 +1,91 @@
+---@alias quicker.LangRegions table<string, number[][][]>
+
+local M = {}
+
+M.cache = {} ---@type table<number, table<string,{parser: vim.treesitter.LanguageTree, highlighter:vim.treesitter.highlighter, enabled:boolean}>>
+local ns = vim.api.nvim_create_namespace("quicker.treesitter")
+
+local TSHighlighter = vim.treesitter.highlighter
+
+local function wrap(name)
+  return function(_, win, buf, ...)
+    if not M.cache[buf] then
+      return false
+    end
+    for _, hl in pairs(M.cache[buf] or {}) do
+      if hl.enabled then
+        TSHighlighter.active[buf] = hl.highlighter
+        TSHighlighter[name](_, win, buf, ...)
+      end
+    end
+    TSHighlighter.active[buf] = nil
+  end
+end
+
+M.did_setup = false
+function M.setup()
+  if M.did_setup then
+    return
+  end
+  M.did_setup = true
+
+  vim.api.nvim_set_decoration_provider(ns, {
+    on_win = wrap("_on_win"),
+    on_line = wrap("_on_line"),
+  })
+
+  vim.api.nvim_create_autocmd("QuickFixCmdPost", {
+    group = vim.api.nvim_create_augroup("quicker.treesitter.hl", { clear = true }),
+    callback = function(ev)
+      M.cache[ev.buf] = nil
+    end,
+  })
+end
+
+---@param buf number
+---@param regions quicker.LangRegions
+function M.attach(buf, regions)
+  M.setup()
+  M.cache[buf] = M.cache[buf] or {}
+  for lang in pairs(M.cache[buf]) do
+    M.cache[buf][lang].enabled = regions[lang] ~= nil
+  end
+
+  for lang in pairs(regions) do
+    M._attach_lang(buf, lang, regions[lang])
+  end
+end
+
+---@param buf number
+---@param lang? string
+function M._attach_lang(buf, lang, regions)
+  lang = lang or "markdown"
+  lang = lang == "markdown" and "markdown_inline" or lang
+
+  M.cache[buf] = M.cache[buf] or {}
+
+  if not M.cache[buf][lang] then
+    local ok, parser = pcall(vim.treesitter.get_parser, buf, lang)
+    if not ok then
+      return
+    end
+    parser:set_included_regions(vim.deepcopy(regions))
+    M.cache[buf][lang] = {
+      parser = parser,
+      highlighter = TSHighlighter.new(parser),
+    }
+  end
+  M.cache[buf][lang].enabled = true
+  local parser = M.cache[buf][lang].parser
+
+  parser:set_included_regions(vim.deepcopy(regions))
+  -- Run a full parse for all included regions. There are two reasons:
+  -- 1. When we call `vim.treesitter.get_parser`, we have not set any
+  --    injection ranges.
+  -- 2. If this is not called, the highlighter will do incremental parsing,
+  --    which means it only parses visible areas (the on_win and on_line callback),
+  --    so if we modify the buffer, unvisited area's state get unsynced.
+  pcall(parser.parse, parser, true)
+end
+
+return M

From 290be6945fc0af09e3912e7d82c4310936445197 Mon Sep 17 00:00:00 2001
From: xzb <2598514867@qq.com>
Date: Tue, 4 Feb 2025 03:06:42 +0800
Subject: [PATCH 02/16] merge the same line

---
 lua/quicker/display.lua | 37 +++++++++++++++++++++++++++----------
 1 file changed, 27 insertions(+), 10 deletions(-)

diff --git a/lua/quicker/display.lua b/lua/quicker/display.lua
index 4519a8f..3e067dc 100644
--- a/lua/quicker/display.lua
+++ b/lua/quicker/display.lua
@@ -350,14 +350,30 @@ add_qf_highlights = function(info)
         info.regions[ft] = info.regions[ft] or {}
         info.empty_regions[ft] = info.empty_regions[ft] or {}
         local filename = vim.split(line, EM_QUAD, { plain = true })[1]
-        table.insert(info.regions[ft], {
-          {
-            i - 1,
-            filename:len() + EM_QUAD_LEN - 1, -- skip EM_QUAD
-            i - 1,
-            #line,
-          },
-        })
+
+        -- Note: we must include the new line character, when multiple lines are treated as one
+        -- range, without "\n" causes all the problems, for example:
+        --
+        -- tests/tmp/expand_1.lua ┃ 2┃-- a comment
+        -- tests/tmp/expand_1.lua ┃ 3┃local a = 1
+        --
+        -- The parser will treat this as "-- a commentlocal a = 1".
+        local region = {
+          i - 1,
+          filename:len() + EM_QUAD_LEN - 1, -- skip EM_QUAD but include a space
+          i,
+          0,
+        }
+        info.previous_item = info.previous_item or item
+        if info.previous_item.bufnr == item.bufnr and info.previous_item.lnum == item.lnum - 1 then
+          -- Merge current range with previous one, parse them together.
+          table.insert(info.regions[ft][#info.regions[ft]], region)
+        else
+          table.insert(info.regions[ft], {
+            region,
+          })
+        end
+        info.previous_item = item
       elseif loaded then
         add_item_highlights_from_buf(qfbufnr, item, line, i)
       elseif config.highlight.treesitter then
@@ -451,6 +467,7 @@ end
 ---@field end_idx integer
 ---@field regions table<string, number[][][]>
 ---@field empty_regions table<string, number[][][]>
+---@field previous_item QuickFixItem
 ---@field winid integer
 ---@field quickfix 1|0
 ---@field force_bufload? boolean field injected by us to control if we're forcing a bufload for the syntax highlighting
@@ -496,7 +513,7 @@ function M.quickfixtextfunc(info)
     if user_data.header == "hard" then
       -- Header when expanded QF list
       local pieces = {
-        string.rep(b.strong_header, col_width + 1),
+        string.rep(b.strong_header, col_width + 2),
         b.strong_cross,
         string.rep(b.strong_header, lnum_width),
       }
@@ -511,7 +528,7 @@ function M.quickfixtextfunc(info)
     elseif user_data.header == "soft" then
       -- Soft header when expanded QF list
       local pieces = {
-        string.rep(b.soft_header, col_width + 1),
+        string.rep(b.soft_header, col_width + 2),
         b.soft_cross,
         string.rep(b.soft_header, lnum_width),
       }

From 3fe3881d1989bf5dbba9c7b8be792e036e4a5a0e Mon Sep 17 00:00:00 2001
From: xzb <2598514867@qq.com>
Date: Thu, 13 Feb 2025 09:33:35 +0800
Subject: [PATCH 03/16] fix: use BufWipeout instead of QuickFixCmdPost

---
 lua/quicker/treesitter.lua | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lua/quicker/treesitter.lua b/lua/quicker/treesitter.lua
index d0c7c8c..bc98296 100644
--- a/lua/quicker/treesitter.lua
+++ b/lua/quicker/treesitter.lua
@@ -34,7 +34,7 @@ function M.setup()
     on_line = wrap("_on_line"),
   })
 
-  vim.api.nvim_create_autocmd("QuickFixCmdPost", {
+  vim.api.nvim_create_autocmd("BufWipeout", {
     group = vim.api.nvim_create_augroup("quicker.treesitter.hl", { clear = true }),
     callback = function(ev)
       M.cache[ev.buf] = nil

From c96d18404d3565f215ed9bfa739cfb7c1af000d4 Mon Sep 17 00:00:00 2001
From: xzb <2598514867@qq.com>
Date: Thu, 13 Feb 2025 09:59:57 +0800
Subject: [PATCH 04/16] fix: type anotations

---
 lua/quicker/treesitter.lua | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lua/quicker/treesitter.lua b/lua/quicker/treesitter.lua
index bc98296..985e793 100644
--- a/lua/quicker/treesitter.lua
+++ b/lua/quicker/treesitter.lua
@@ -1,4 +1,4 @@
----@alias quicker.LangRegions table<string, number[][][]>
+---@alias quicker.LangRegions table<string, Range4[][]>
 
 local M = {}
 
@@ -58,6 +58,7 @@ end
 
 ---@param buf number
 ---@param lang? string
+---@param regions quicker.LangRegions
 function M._attach_lang(buf, lang, regions)
   lang = lang or "markdown"
   lang = lang == "markdown" and "markdown_inline" or lang

From d80e9dbdd159e5f36fbe8d15f188cec42c0662d2 Mon Sep 17 00:00:00 2001
From: xzb <2598514867@qq.com>
Date: Thu, 13 Feb 2025 10:01:38 +0800
Subject: [PATCH 05/16] fix: make cache local

---
 lua/quicker/treesitter.lua | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/lua/quicker/treesitter.lua b/lua/quicker/treesitter.lua
index 985e793..ba7799b 100644
--- a/lua/quicker/treesitter.lua
+++ b/lua/quicker/treesitter.lua
@@ -2,17 +2,17 @@
 
 local M = {}
 
-M.cache = {} ---@type table<number, table<string,{parser: vim.treesitter.LanguageTree, highlighter:vim.treesitter.highlighter, enabled:boolean}>>
+local cache = {} ---@type table<number, table<string,{parser: vim.treesitter.LanguageTree, highlighter:vim.treesitter.highlighter, enabled:boolean}>>
 local ns = vim.api.nvim_create_namespace("quicker.treesitter")
 
 local TSHighlighter = vim.treesitter.highlighter
 
 local function wrap(name)
   return function(_, win, buf, ...)
-    if not M.cache[buf] then
+    if not cache[buf] then
       return false
     end
-    for _, hl in pairs(M.cache[buf] or {}) do
+    for _, hl in pairs(cache[buf] or {}) do
       if hl.enabled then
         TSHighlighter.active[buf] = hl.highlighter
         TSHighlighter[name](_, win, buf, ...)
@@ -37,7 +37,7 @@ function M.setup()
   vim.api.nvim_create_autocmd("BufWipeout", {
     group = vim.api.nvim_create_augroup("quicker.treesitter.hl", { clear = true }),
     callback = function(ev)
-      M.cache[ev.buf] = nil
+      cache[ev.buf] = nil
     end,
   })
 end
@@ -46,9 +46,9 @@ end
 ---@param regions quicker.LangRegions
 function M.attach(buf, regions)
   M.setup()
-  M.cache[buf] = M.cache[buf] or {}
-  for lang in pairs(M.cache[buf]) do
-    M.cache[buf][lang].enabled = regions[lang] ~= nil
+  cache[buf] = cache[buf] or {}
+  for lang in pairs(cache[buf]) do
+    cache[buf][lang].enabled = regions[lang] ~= nil
   end
 
   for lang in pairs(regions) do
@@ -63,21 +63,21 @@ function M._attach_lang(buf, lang, regions)
   lang = lang or "markdown"
   lang = lang == "markdown" and "markdown_inline" or lang
 
-  M.cache[buf] = M.cache[buf] or {}
+  cache[buf] = cache[buf] or {}
 
-  if not M.cache[buf][lang] then
+  if not cache[buf][lang] then
     local ok, parser = pcall(vim.treesitter.get_parser, buf, lang)
     if not ok then
       return
     end
     parser:set_included_regions(vim.deepcopy(regions))
-    M.cache[buf][lang] = {
+    cache[buf][lang] = {
       parser = parser,
       highlighter = TSHighlighter.new(parser),
     }
   end
-  M.cache[buf][lang].enabled = true
-  local parser = M.cache[buf][lang].parser
+  cache[buf][lang].enabled = true
+  local parser = cache[buf][lang].parser
 
   parser:set_included_regions(vim.deepcopy(regions))
   -- Run a full parse for all included regions. There are two reasons:

From 70af1977788458f9f73e9d969fa70a45402f26fe Mon Sep 17 00:00:00 2001
From: xzb <2598514867@qq.com>
Date: Thu, 13 Feb 2025 11:24:23 +0800
Subject: [PATCH 06/16] also load highlight from buffer

---
 README.md               | 4 ++--
 lua/quicker/display.lua | 7 +++----
 2 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/README.md b/README.md
index 75c75b6..85a9d59 100644
--- a/README.md
+++ b/README.md
@@ -199,9 +199,9 @@ require("quicker").setup({
   constrain_cursor = true,
   highlight = {
     -- Attach parser to qf buffer, highlight text in real time as you edit.
-    -- If this is true, other highlight options are ignored.
     attach_parser = true,
-    -- Query treesitter highlight groups using string parser, only update after you save or refresh.
+    -- Additionally query treesitter highlight groups using string parser,
+    -- those highlights only update when you save or refresh.
     treesitter = true,
     -- Use LSP semantic token highlighting
     lsp = true,
diff --git a/lua/quicker/display.lua b/lua/quicker/display.lua
index 3e067dc..a89c9b9 100644
--- a/lua/quicker/display.lua
+++ b/lua/quicker/display.lua
@@ -344,8 +344,6 @@ add_qf_highlights = function(info)
       end
 
       local ft = vim.filetype.match({ buf = item.bufnr })
-      -- If attach_parser is true, we should not apply lsp highlight or query ts highlights
-      -- from loaded buffers, as they will overwrite each other.
       if config.highlight.attach_parser and ft then
         info.regions[ft] = info.regions[ft] or {}
         info.empty_regions[ft] = info.empty_regions[ft] or {}
@@ -374,8 +372,6 @@ add_qf_highlights = function(info)
           })
         end
         info.previous_item = item
-      elseif loaded then
-        add_item_highlights_from_buf(qfbufnr, item, line, i)
       elseif config.highlight.treesitter then
         local filename = vim.split(line, EM_QUAD, { plain = true })[1]
         local offset = filename:len() + EM_QUAD_LEN
@@ -392,6 +388,9 @@ add_qf_highlights = function(info)
           })
         end
       end
+      if loaded then
+        add_item_highlights_from_buf(qfbufnr, item, line, i)
+      end
     end
 
     local user_data = util.get_user_data(item)

From 5e9ed34e306190523f96518fbb0f93b0171688ff Mon Sep 17 00:00:00 2001
From: Steven Arcangeli <stevearc@stevearc.com>
Date: Sat, 15 Feb 2025 15:02:02 -0800
Subject: [PATCH 07/16] fix: EM_QUAD doesn't need a space

---
 lua/quicker/display.lua | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/lua/quicker/display.lua b/lua/quicker/display.lua
index a89c9b9..92c18da 100644
--- a/lua/quicker/display.lua
+++ b/lua/quicker/display.lua
@@ -5,9 +5,7 @@ local util = require("quicker.util")
 
 local M = {}
 
--- A EM_QUAD and a space, we include an extra space before the real text, because it
--- avoids strange cases such as no highlight when insert at start of qf text.
-local EM_QUAD = "  "
+local EM_QUAD = " "
 local EM_QUAD_LEN = EM_QUAD:len()
 M.EM_QUAD = EM_QUAD
 M.EM_QUAD_LEN = EM_QUAD_LEN
@@ -358,7 +356,7 @@ add_qf_highlights = function(info)
         -- The parser will treat this as "-- a commentlocal a = 1".
         local region = {
           i - 1,
-          filename:len() + EM_QUAD_LEN - 1, -- skip EM_QUAD but include a space
+          filename:len() + EM_QUAD_LEN,
           i,
           0,
         }
@@ -512,7 +510,7 @@ function M.quickfixtextfunc(info)
     if user_data.header == "hard" then
       -- Header when expanded QF list
       local pieces = {
-        string.rep(b.strong_header, col_width + 2),
+        string.rep(b.strong_header, col_width + 1),
         b.strong_cross,
         string.rep(b.strong_header, lnum_width),
       }
@@ -527,7 +525,7 @@ function M.quickfixtextfunc(info)
     elseif user_data.header == "soft" then
       -- Soft header when expanded QF list
       local pieces = {
-        string.rep(b.soft_header, col_width + 2),
+        string.rep(b.soft_header, col_width + 1),
         b.soft_cross,
         string.rep(b.soft_header, lnum_width),
       }

From 1eb986b0d55693bbaadfd763f0b2a6dd73d559ee Mon Sep 17 00:00:00 2001
From: xzb <2598514867@qq.com>
Date: Sun, 16 Feb 2025 10:05:41 +0800
Subject: [PATCH 08/16] change number[][][] to Range4[][]

---
 lua/quicker/display.lua | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lua/quicker/display.lua b/lua/quicker/display.lua
index 92c18da..54c9622 100644
--- a/lua/quicker/display.lua
+++ b/lua/quicker/display.lua
@@ -462,8 +462,8 @@ end
 ---@field id integer
 ---@field start_idx integer
 ---@field end_idx integer
----@field regions table<string, number[][][]>
----@field empty_regions table<string, number[][][]>
+---@field regions table<string, Range4[][]>
+---@field empty_regions table<string, Range4[][]>
 ---@field previous_item QuickFixItem
 ---@field winid integer
 ---@field quickfix 1|0

From a23b3b09c88988090b63b381c98ac6a4e9c28407 Mon Sep 17 00:00:00 2001
From: xzb <2598514867@qq.com>
Date: Sun, 16 Feb 2025 11:07:51 +0800
Subject: [PATCH 09/16] do not register callback when
 config.highlight.max_lines exceeds

---
 README.md                  |   8 +--
 lua/quicker/config.lua     |   7 ++-
 lua/quicker/display.lua    |  40 +-------------
 lua/quicker/highlight.lua  | 109 -------------------------------------
 lua/quicker/treesitter.lua |  45 ++++++++-------
 5 files changed, 37 insertions(+), 172 deletions(-)

diff --git a/README.md b/README.md
index 85a9d59..a3ca314 100644
--- a/README.md
+++ b/README.md
@@ -198,11 +198,11 @@ require("quicker").setup({
   -- Keep the cursor to the right of the filename and lnum columns
   constrain_cursor = true,
   highlight = {
-    -- Attach parser to qf buffer, highlight text in real time as you edit.
-    attach_parser = true,
-    -- Additionally query treesitter highlight groups using string parser,
-    -- those highlights only update when you save or refresh.
+    -- Attach treesitter parser to qf buffer, highlight text in real time as you edit.
     treesitter = true,
+    -- Do not register callbacks when buffer line counts exceed this limit. In other words,
+    -- highlight won't get updated as you edit.
+    max_lines = 10000,
     -- Use LSP semantic token highlighting
     lsp = true,
     -- Load the referenced buffers to apply more accurate highlights (may be slow)
diff --git a/lua/quicker/config.lua b/lua/quicker/config.lua
index a42c555..67310d0 100644
--- a/lua/quicker/config.lua
+++ b/lua/quicker/config.lua
@@ -26,8 +26,11 @@ local default_config = {
   -- Keep the cursor to the right of the filename and lnum columns
   constrain_cursor = true,
   highlight = {
-    -- Use treesitter highlighting
+    -- Attach treesitter parser to qf buffer, highlight text in real time as you edit.
     treesitter = true,
+    -- Do not register callbacks when buffer line counts exceed this limit. In other words,
+    -- highlight won't get updated as you edit.
+    max_lines = 10000,
     -- Use LSP semantic token highlighting
     lsp = true,
     -- Load the referenced buffers to apply more accurate highlights (may be slow)
@@ -154,8 +157,8 @@ end
 ---@field soft_end? string
 
 ---@class (exact) quicker.HighlightConfig
----@field attach_parser boolean
 ---@field treesitter boolean
+---@field max_lines integer
 ---@field lsp boolean
 ---@field load_buffers boolean
 
diff --git a/lua/quicker/display.lua b/lua/quicker/display.lua
index 54c9622..d7e6243 100644
--- a/lua/quicker/display.lua
+++ b/lua/quicker/display.lua
@@ -216,27 +216,6 @@ local function add_item_highlights_from_buf(qfbufnr, item, line, lnum)
       offset = offset - item_space
     end
 
-    -- Add treesitter highlights
-    if config.highlight.treesitter then
-      for _, hl in ipairs(highlight.buf_get_ts_highlights(item.bufnr, item.lnum)) do
-        local start_col, end_col, hl_group = hl[1], hl[2], hl[3]
-        if end_col == -1 then
-          end_col = src_line:len()
-        end
-        -- If the highlight starts at the beginning of the source line, then it might be off the
-        -- buffer in the quickfix because we've removed leading whitespace. If so, clamp the value
-        -- to 0. Except, for some reason 0 gives incorrect results, but -1 works properly even
-        -- though -1 should indicate the *end* of the line. Not sure why this work, but it does.
-        local hl_start = math.max(-1, start_col + offset)
-        vim.api.nvim_buf_set_extmark(qfbufnr, ns, lnum - 1, hl_start, {
-          hl_group = hl_group,
-          end_col = end_col + offset,
-          priority = 100,
-          strict = false,
-        })
-      end
-    end
-
     -- Add LSP semantic token highlights
     if config.highlight.lsp then
       for _, hl in ipairs(highlight.buf_get_lsp_highlights(item.bufnr, item.lnum)) do
@@ -342,7 +321,7 @@ add_qf_highlights = function(info)
       end
 
       local ft = vim.filetype.match({ buf = item.bufnr })
-      if config.highlight.attach_parser and ft then
+      if config.highlight.treesitter and ft then
         info.regions[ft] = info.regions[ft] or {}
         info.empty_regions[ft] = info.empty_regions[ft] or {}
         local filename = vim.split(line, EM_QUAD, { plain = true })[1]
@@ -370,21 +349,6 @@ add_qf_highlights = function(info)
           })
         end
         info.previous_item = item
-      elseif config.highlight.treesitter then
-        local filename = vim.split(line, EM_QUAD, { plain = true })[1]
-        local offset = filename:len() + EM_QUAD_LEN
-        local text = line:sub(offset + 1)
-        for _, hl in ipairs(highlight.get_heuristic_ts_highlights(item, text)) do
-          local start_col, end_col, hl_group = hl[1], hl[2], hl[3]
-          start_col = start_col + offset
-          end_col = end_col + offset
-          vim.api.nvim_buf_set_extmark(qfbufnr, ns, i - 1, start_col, {
-            hl_group = hl_group,
-            end_col = end_col,
-            priority = 100,
-            strict = false,
-          })
-        end
       end
       if loaded then
         add_item_highlights_from_buf(qfbufnr, item, line, i)
@@ -415,7 +379,7 @@ add_qf_highlights = function(info)
       return
     end
   end
-  if config.highlight.attach_parser then
+  if config.highlight.treesitter then
     -- cleanup previous regions each time we call setqflist.
     require("quicker.treesitter").attach(qf_list.qfbufnr, info.empty_regions)
     require("quicker.treesitter").attach(qf_list.qfbufnr, info.regions)
diff --git a/lua/quicker/highlight.lua b/lua/quicker/highlight.lua
index a7323aa..0b52c2b 100644
--- a/lua/quicker/highlight.lua
+++ b/lua/quicker/highlight.lua
@@ -19,71 +19,6 @@ local function get_highlight_query(lang)
   end
 end
 
----@param bufnr integer
----@param lnum integer
----@return quicker.TSHighlight[]
-function M.buf_get_ts_highlights(bufnr, lnum)
-  local filetype = vim.bo[bufnr].filetype
-  if not filetype or filetype == "" then
-    filetype = vim.filetype.match({ buf = bufnr }) or ""
-  end
-  local lang = vim.treesitter.language.get_lang(filetype) or filetype
-  if lang == "" then
-    return {}
-  end
-  local ok, parser = pcall(vim.treesitter.get_parser, bufnr, lang)
-  if not ok or not parser then
-    return {}
-  end
-
-  local row = lnum - 1
-  if not parser:is_valid() then
-    parser:parse(true)
-  end
-
-  local highlights = {}
-  parser:for_each_tree(function(tstree, tree)
-    if not tstree then
-      return
-    end
-
-    local root_node = tstree:root()
-    local root_start_row, _, root_end_row, _ = root_node:range()
-
-    -- Only worry about trees within the line range
-    if root_start_row > row or root_end_row < row then
-      return
-    end
-
-    local query = get_highlight_query(tree:lang())
-
-    -- Some injected languages may not have highlight queries.
-    if not query then
-      return
-    end
-
-    for capture, node, metadata in query:iter_captures(root_node, bufnr, row, root_end_row + 1) do
-      if capture == nil then
-        break
-      end
-
-      local range = vim.treesitter.get_range(node, bufnr, metadata[capture])
-      local start_row, start_col, _, end_row, end_col, _ = unpack(range)
-      if start_row > row then
-        break
-      end
-      local capture_name = query.captures[capture]
-      local hl = string.format("@%s.%s", capture_name, tree:lang())
-      if end_row > start_row then
-        end_col = -1
-      end
-      table.insert(highlights, { start_col, end_col, hl })
-    end
-  end)
-
-  return highlights
-end
-
 ---@class quicker.LSPHighlight
 ---@field [1] integer start_col
 ---@field [2] integer end_col
@@ -157,50 +92,6 @@ function M.buf_get_lsp_highlights(bufnr, lnum)
   return lsp_highlights
 end
 
----@param item QuickFixItem
----@param line string
----@return quicker.TSHighlight[]
-M.get_heuristic_ts_highlights = function(item, line)
-  local filetype = vim.filetype.match({ buf = item.bufnr })
-  if not filetype then
-    return {}
-  end
-
-  local lang = vim.treesitter.language.get_lang(filetype)
-  if not lang then
-    return {}
-  end
-
-  local has_parser, parser = pcall(vim.treesitter.get_string_parser, line, lang)
-  if not has_parser then
-    return {}
-  end
-
-  local root = parser:parse(true)[1]:root()
-  local query = vim.treesitter.query.get(lang, "highlights")
-  if not query then
-    return {}
-  end
-
-  local highlights = {}
-  for capture, node, metadata in query:iter_captures(root, line) do
-    if capture == nil then
-      break
-    end
-
-    local range = vim.treesitter.get_range(node, line, metadata[capture])
-    local start_row, start_col, _, end_row, end_col, _ = unpack(range)
-    local capture_name = query.captures[capture]
-    local hl = string.format("@%s.%s", capture_name, lang)
-    if end_row > start_row then
-      end_col = -1
-    end
-    table.insert(highlights, { start_col, end_col, hl })
-  end
-
-  return highlights
-end
-
 function M.set_highlight_groups()
   if vim.tbl_isempty(vim.api.nvim_get_hl(0, { name = "QuickFixHeaderHard" })) then
     vim.api.nvim_set_hl(0, "QuickFixHeaderHard", { link = "Delimiter", default = true })
diff --git a/lua/quicker/treesitter.lua b/lua/quicker/treesitter.lua
index ba7799b..dd37d40 100644
--- a/lua/quicker/treesitter.lua
+++ b/lua/quicker/treesitter.lua
@@ -1,4 +1,4 @@
----@alias quicker.LangRegions table<string, Range4[][]>
+local config = require("quicker.config")
 
 local M = {}
 
@@ -42,6 +42,8 @@ function M.setup()
   })
 end
 
+---@alias quicker.LangRegions table<string, Range4[][]>
+
 ---@param buf number
 ---@param regions quicker.LangRegions
 function M.attach(buf, regions)
@@ -51,35 +53,40 @@ function M.attach(buf, regions)
     cache[buf][lang].enabled = regions[lang] ~= nil
   end
 
+  local counts = 0
+  for _, region in pairs(regions) do
+    counts = counts + #vim.iter(region):flatten():totable()
+  end
+
   for lang in pairs(regions) do
-    M._attach_lang(buf, lang, regions[lang])
+    M._attach_lang(buf, lang, regions[lang], counts > config.highlight.max_lines)
   end
 end
 
 ---@param buf number
----@param lang? string
+---@param lang string
 ---@param regions quicker.LangRegions
-function M._attach_lang(buf, lang, regions)
-  lang = lang or "markdown"
-  lang = lang == "markdown" and "markdown_inline" or lang
-
+---@param detach boolean
+function M._attach_lang(buf, lang, regions, detach)
   cache[buf] = cache[buf] or {}
 
-  if not cache[buf][lang] then
-    local ok, parser = pcall(vim.treesitter.get_parser, buf, lang)
-    if not ok then
-      return
-    end
-    parser:set_included_regions(vim.deepcopy(regions))
-    cache[buf][lang] = {
-      parser = parser,
-      highlighter = TSHighlighter.new(parser),
-    }
+  local ok, parser
+  if detach then
+    -- This avoids registering callbacks on the languagetree.
+    ok, parser = pcall(vim.treesitter.languagetree.new, buf, lang)
+  else
+    ok, parser = pcall(vim.treesitter.get_parser, buf, lang)
+  end
+  if not ok then
+    return
   end
+  parser:set_included_regions(vim.deepcopy(regions))
+  cache[buf][lang] = {
+    parser = parser,
+    highlighter = TSHighlighter.new(parser),
+  }
   cache[buf][lang].enabled = true
-  local parser = cache[buf][lang].parser
 
-  parser:set_included_regions(vim.deepcopy(regions))
   -- Run a full parse for all included regions. There are two reasons:
   -- 1. When we call `vim.treesitter.get_parser`, we have not set any
   --    injection ranges.

From bbd28401897db3f9122ea2f0c20fdc032022dff1 Mon Sep 17 00:00:00 2001
From: xzb <2598514867@qq.com>
Date: Sun, 16 Feb 2025 12:03:06 +0800
Subject: [PATCH 10/16] cache filetype for each bufnr

---
 lua/quicker/display.lua | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/lua/quicker/display.lua b/lua/quicker/display.lua
index d7e6243..f67953d 100644
--- a/lua/quicker/display.lua
+++ b/lua/quicker/display.lua
@@ -248,6 +248,7 @@ local function highlight_buffer_when_entered(qfbufnr, info)
       info.end_idx = vim.api.nvim_buf_line_count(qfbufnr)
       info.regions = {}
       info.empty_regions = {}
+      info.ft = {}
       schedule_highlights(info)
     end,
   })
@@ -320,7 +321,12 @@ add_qf_highlights = function(info)
         loaded = true
       end
 
-      local ft = vim.filetype.match({ buf = item.bufnr })
+      local ft = info.ft[item.bufnr]
+      if ft == nil then
+        ft = loaded and vim.bo[item.bufnr].filetype or vim.filetype.match({ buf = item.bufnr })
+        info.ft[item.bufnr] = ft
+      end
+
       if config.highlight.treesitter and ft then
         info.regions[ft] = info.regions[ft] or {}
         info.empty_regions[ft] = info.empty_regions[ft] or {}
@@ -428,6 +434,7 @@ end
 ---@field end_idx integer
 ---@field regions table<string, Range4[][]>
 ---@field empty_regions table<string, Range4[][]>
+---@field ft table<integer, string|nil>
 ---@field previous_item QuickFixItem
 ---@field winid integer
 ---@field quickfix 1|0
@@ -594,6 +601,7 @@ function M.quickfixtextfunc(info)
   if info.end_idx == #items then
     info.regions = {}
     info.empty_regions = {}
+    info.ft = {}
     schedule_highlights(info)
 
     if qf_list.qfbufnr > 0 then

From 9a7fa03f3ebc545d396577fe30b00a280fe4deaa Mon Sep 17 00:00:00 2001
From: xzb <2598514867@qq.com>
Date: Sun, 16 Feb 2025 12:34:34 +0800
Subject: [PATCH 11/16] remove empty_regions

---
 lua/quicker/display.lua | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/lua/quicker/display.lua b/lua/quicker/display.lua
index f67953d..a45604a 100644
--- a/lua/quicker/display.lua
+++ b/lua/quicker/display.lua
@@ -247,7 +247,6 @@ local function highlight_buffer_when_entered(qfbufnr, info)
       info.start_idx = 1
       info.end_idx = vim.api.nvim_buf_line_count(qfbufnr)
       info.regions = {}
-      info.empty_regions = {}
       info.ft = {}
       schedule_highlights(info)
     end,
@@ -329,7 +328,6 @@ add_qf_highlights = function(info)
 
       if config.highlight.treesitter and ft then
         info.regions[ft] = info.regions[ft] or {}
-        info.empty_regions[ft] = info.empty_regions[ft] or {}
         local filename = vim.split(line, EM_QUAD, { plain = true })[1]
 
         -- Note: we must include the new line character, when multiple lines are treated as one
@@ -386,8 +384,6 @@ add_qf_highlights = function(info)
     end
   end
   if config.highlight.treesitter then
-    -- cleanup previous regions each time we call setqflist.
-    require("quicker.treesitter").attach(qf_list.qfbufnr, info.empty_regions)
     require("quicker.treesitter").attach(qf_list.qfbufnr, info.regions)
   end
 
@@ -433,7 +429,6 @@ end
 ---@field start_idx integer
 ---@field end_idx integer
 ---@field regions table<string, Range4[][]>
----@field empty_regions table<string, Range4[][]>
 ---@field ft table<integer, string|nil>
 ---@field previous_item QuickFixItem
 ---@field winid integer
@@ -600,7 +595,6 @@ function M.quickfixtextfunc(info)
   -- If we just rendered the last item, add highlights
   if info.end_idx == #items then
     info.regions = {}
-    info.empty_regions = {}
     info.ft = {}
     schedule_highlights(info)
 

From ab48e858a63a8e664ecbc44073188395e3fc2357 Mon Sep 17 00:00:00 2001
From: xzb <2598514867@qq.com>
Date: Sun, 16 Feb 2025 12:43:54 +0800
Subject: [PATCH 12/16] Revert "remove empty_regions"

This reverts commit 9a7fa03f3ebc545d396577fe30b00a280fe4deaa.
---
 lua/quicker/display.lua | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lua/quicker/display.lua b/lua/quicker/display.lua
index a45604a..f67953d 100644
--- a/lua/quicker/display.lua
+++ b/lua/quicker/display.lua
@@ -247,6 +247,7 @@ local function highlight_buffer_when_entered(qfbufnr, info)
       info.start_idx = 1
       info.end_idx = vim.api.nvim_buf_line_count(qfbufnr)
       info.regions = {}
+      info.empty_regions = {}
       info.ft = {}
       schedule_highlights(info)
     end,
@@ -328,6 +329,7 @@ add_qf_highlights = function(info)
 
       if config.highlight.treesitter and ft then
         info.regions[ft] = info.regions[ft] or {}
+        info.empty_regions[ft] = info.empty_regions[ft] or {}
         local filename = vim.split(line, EM_QUAD, { plain = true })[1]
 
         -- Note: we must include the new line character, when multiple lines are treated as one
@@ -384,6 +386,8 @@ add_qf_highlights = function(info)
     end
   end
   if config.highlight.treesitter then
+    -- cleanup previous regions each time we call setqflist.
+    require("quicker.treesitter").attach(qf_list.qfbufnr, info.empty_regions)
     require("quicker.treesitter").attach(qf_list.qfbufnr, info.regions)
   end
 
@@ -429,6 +433,7 @@ end
 ---@field start_idx integer
 ---@field end_idx integer
 ---@field regions table<string, Range4[][]>
+---@field empty_regions table<string, Range4[][]>
 ---@field ft table<integer, string|nil>
 ---@field previous_item QuickFixItem
 ---@field winid integer
@@ -595,6 +600,7 @@ function M.quickfixtextfunc(info)
   -- If we just rendered the last item, add highlights
   if info.end_idx == #items then
     info.regions = {}
+    info.empty_regions = {}
     info.ft = {}
     schedule_highlights(info)
 

From a38c08aa9d21122b95caf9e3ad5560fada7f27e4 Mon Sep 17 00:00:00 2001
From: xzb <2598514867@qq.com>
Date: Sun, 16 Feb 2025 14:00:54 +0800
Subject: [PATCH 13/16] caculate regions count early

---
 lua/quicker/display.lua    |  9 ++++++--
 lua/quicker/treesitter.lua | 45 +++++++++++++++++++-------------------
 2 files changed, 29 insertions(+), 25 deletions(-)

diff --git a/lua/quicker/display.lua b/lua/quicker/display.lua
index f67953d..4ed2167 100644
--- a/lua/quicker/display.lua
+++ b/lua/quicker/display.lua
@@ -247,6 +247,7 @@ local function highlight_buffer_when_entered(qfbufnr, info)
       info.start_idx = 1
       info.end_idx = vim.api.nvim_buf_line_count(qfbufnr)
       info.regions = {}
+      info.region_count = 0
       info.empty_regions = {}
       info.ft = {}
       schedule_highlights(info)
@@ -329,6 +330,7 @@ add_qf_highlights = function(info)
 
       if config.highlight.treesitter and ft then
         info.regions[ft] = info.regions[ft] or {}
+        info.region_count = info.region_count + 1
         info.empty_regions[ft] = info.empty_regions[ft] or {}
         local filename = vim.split(line, EM_QUAD, { plain = true })[1]
 
@@ -386,9 +388,10 @@ add_qf_highlights = function(info)
     end
   end
   if config.highlight.treesitter then
+    local register_cbs = info.region_count <= config.highlight.max_lines
     -- cleanup previous regions each time we call setqflist.
-    require("quicker.treesitter").attach(qf_list.qfbufnr, info.empty_regions)
-    require("quicker.treesitter").attach(qf_list.qfbufnr, info.regions)
+    require("quicker.treesitter").attach(qf_list.qfbufnr, info.empty_regions, register_cbs)
+    require("quicker.treesitter").attach(qf_list.qfbufnr, info.regions, register_cbs)
   end
 
   vim.api.nvim_buf_clear_namespace(qf_list.qfbufnr, ns, info.end_idx, -1)
@@ -433,6 +436,7 @@ end
 ---@field start_idx integer
 ---@field end_idx integer
 ---@field regions table<string, Range4[][]>
+---@field region_count integer
 ---@field empty_regions table<string, Range4[][]>
 ---@field ft table<integer, string|nil>
 ---@field previous_item QuickFixItem
@@ -600,6 +604,7 @@ function M.quickfixtextfunc(info)
   -- If we just rendered the last item, add highlights
   if info.end_idx == #items then
     info.regions = {}
+    info.region_count = 0
     info.empty_regions = {}
     info.ft = {}
     schedule_highlights(info)
diff --git a/lua/quicker/treesitter.lua b/lua/quicker/treesitter.lua
index dd37d40..20dfc51 100644
--- a/lua/quicker/treesitter.lua
+++ b/lua/quicker/treesitter.lua
@@ -46,47 +46,46 @@ end
 
 ---@param buf number
 ---@param regions quicker.LangRegions
-function M.attach(buf, regions)
+---@param register_cbs boolean
+function M.attach(buf, regions, register_cbs)
   M.setup()
   cache[buf] = cache[buf] or {}
   for lang in pairs(cache[buf]) do
     cache[buf][lang].enabled = regions[lang] ~= nil
   end
 
-  local counts = 0
-  for _, region in pairs(regions) do
-    counts = counts + #vim.iter(region):flatten():totable()
-  end
-
   for lang in pairs(regions) do
-    M._attach_lang(buf, lang, regions[lang], counts > config.highlight.max_lines)
+    M._attach_lang(buf, lang, regions[lang], register_cbs)
   end
 end
 
 ---@param buf number
 ---@param lang string
 ---@param regions quicker.LangRegions
----@param detach boolean
-function M._attach_lang(buf, lang, regions, detach)
+---@param register_cbs boolean
+function M._attach_lang(buf, lang, regions, register_cbs)
   cache[buf] = cache[buf] or {}
 
-  local ok, parser
-  if detach then
-    -- This avoids registering callbacks on the languagetree.
-    ok, parser = pcall(vim.treesitter.languagetree.new, buf, lang)
-  else
-    ok, parser = pcall(vim.treesitter.get_parser, buf, lang)
-  end
-  if not ok then
-    return
+  if not cache[buf][lang] then
+    local ok, parser
+    if register_cbs then
+      ok, parser = pcall(vim.treesitter.get_parser, buf, lang)
+    else
+      ok, parser = pcall(vim.treesitter.languagetree.new, buf, lang)
+    end
+    if not ok then
+      return
+    end
+    parser:set_included_regions(vim.deepcopy(regions))
+    cache[buf][lang] = {
+      parser = parser,
+      highlighter = TSHighlighter.new(parser),
+    }
   end
-  parser:set_included_regions(vim.deepcopy(regions))
-  cache[buf][lang] = {
-    parser = parser,
-    highlighter = TSHighlighter.new(parser),
-  }
   cache[buf][lang].enabled = true
+  local parser = cache[buf][lang].parser
 
+  parser:set_included_regions(vim.deepcopy(regions))
   -- Run a full parse for all included regions. There are two reasons:
   -- 1. When we call `vim.treesitter.get_parser`, we have not set any
   --    injection ranges.

From 81ecc67797a7822cc8f3e512e6d925a61cb3763a Mon Sep 17 00:00:00 2001
From: xzb <2598514867@qq.com>
Date: Mon, 17 Feb 2025 02:35:56 +0800
Subject: [PATCH 14/16] HACK: manually perform an edit after parsing

---
 lua/quicker/treesitter.lua | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lua/quicker/treesitter.lua b/lua/quicker/treesitter.lua
index 20dfc51..c041eb8 100644
--- a/lua/quicker/treesitter.lua
+++ b/lua/quicker/treesitter.lua
@@ -93,6 +93,11 @@ function M._attach_lang(buf, lang, regions, register_cbs)
   --    which means it only parses visible areas (the on_win and on_line callback),
   --    so if we modify the buffer, unvisited area's state get unsynced.
   pcall(parser.parse, parser, true)
+  -- Hack: we need to manually perform an edit, otherwise delete an entire line
+  -- will cause all highlights to disappear.
+  vim.api.nvim_buf_call(buf, function()
+    vim.cmd([[norm! "_xu]])
+  end)
 end
 
 return M

From 532b66e57d366342862f1c9727a4823c53bb3f75 Mon Sep 17 00:00:00 2001
From: xzb <2598514867@qq.com>
Date: Wed, 5 Mar 2025 05:25:54 +0800
Subject: [PATCH 15/16] Revert "fix: EM_QUAD doesn't need a space"

This reverts commit 5e9ed34e306190523f96518fbb0f93b0171688ff.
---
 lua/quicker/display.lua | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/lua/quicker/display.lua b/lua/quicker/display.lua
index 4ed2167..7fcfb2d 100644
--- a/lua/quicker/display.lua
+++ b/lua/quicker/display.lua
@@ -5,7 +5,9 @@ local util = require("quicker.util")
 
 local M = {}
 
-local EM_QUAD = " "
+-- A EM_QUAD and a space, we include an extra space before the real text, because it
+-- avoids strange cases such as no highlight when insert at start of qf text.
+local EM_QUAD = "  "
 local EM_QUAD_LEN = EM_QUAD:len()
 M.EM_QUAD = EM_QUAD
 M.EM_QUAD_LEN = EM_QUAD_LEN
@@ -343,7 +345,7 @@ add_qf_highlights = function(info)
         -- The parser will treat this as "-- a commentlocal a = 1".
         local region = {
           i - 1,
-          filename:len() + EM_QUAD_LEN,
+          filename:len() + EM_QUAD_LEN - 1, -- skip EM_QUAD but include a space
           i,
           0,
         }
@@ -485,7 +487,7 @@ function M.quickfixtextfunc(info)
     if user_data.header == "hard" then
       -- Header when expanded QF list
       local pieces = {
-        string.rep(b.strong_header, col_width + 1),
+        string.rep(b.strong_header, col_width + 2),
         b.strong_cross,
         string.rep(b.strong_header, lnum_width),
       }
@@ -500,7 +502,7 @@ function M.quickfixtextfunc(info)
     elseif user_data.header == "soft" then
       -- Soft header when expanded QF list
       local pieces = {
-        string.rep(b.soft_header, col_width + 1),
+        string.rep(b.soft_header, col_width + 2),
         b.soft_cross,
         string.rep(b.soft_header, lnum_width),
       }

From 260bfa4fcc4a488bd016929cae067f2a69854079 Mon Sep 17 00:00:00 2001
From: xzb <2598514867@qq.com>
Date: Wed, 5 Mar 2025 05:25:34 +0800
Subject: [PATCH 16/16] conceal spaces

---
 lua/quicker/config.lua  |  1 +
 lua/quicker/display.lua | 12 ++++++++++--
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/lua/quicker/config.lua b/lua/quicker/config.lua
index 67310d0..424b50f 100644
--- a/lua/quicker/config.lua
+++ b/lua/quicker/config.lua
@@ -3,6 +3,7 @@ local default_config = {
   opts = {
     buflisted = false,
     number = false,
+    concealcursor = "nvic",
     relativenumber = false,
     signcolumn = "auto",
     winfixheight = true,
diff --git a/lua/quicker/display.lua b/lua/quicker/display.lua
index 7fcfb2d..f603d02 100644
--- a/lua/quicker/display.lua
+++ b/lua/quicker/display.lua
@@ -487,7 +487,7 @@ function M.quickfixtextfunc(info)
     if user_data.header == "hard" then
       -- Header when expanded QF list
       local pieces = {
-        string.rep(b.strong_header, col_width + 2),
+        string.rep(b.strong_header, col_width + 1),
         b.strong_cross,
         string.rep(b.strong_header, lnum_width),
       }
@@ -502,7 +502,7 @@ function M.quickfixtextfunc(info)
     elseif user_data.header == "soft" then
       -- Soft header when expanded QF list
       local pieces = {
-        string.rep(b.soft_header, col_width + 2),
+        string.rep(b.soft_header, col_width + 1),
         b.soft_cross,
         string.rep(b.soft_header, lnum_width),
       }
@@ -578,6 +578,10 @@ function M.quickfixtextfunc(info)
             virt_text_pos = "inline",
             invalidate = true,
           })
+        vim.api.nvim_buf_set_extmark(qf_list.qfbufnr, ns, lnum - 1, end_col, {
+          end_col = end_col + EM_QUAD_LEN - 1,
+          conceal = "",
+        })
         idmap[id] = lnum
 
         -- Highlight the filename
@@ -598,6 +602,10 @@ function M.quickfixtextfunc(info)
           virt_lines = { header },
           virt_lines_above = true,
         })
+        -- vim.api.nvim_buf_set_extmark(qf_list.qfbufnr, ns, lnum - 1, end_col, {
+        --   end_col = end_col + EM_QUAD_LEN - 1,
+        --   conceal = "",
+        -- })
       end
     end
   end