README.md

@@ -9,12 +9,18 @@ syntax highlighting.
 
 ## Features
 
-- Treesitter syntax highlighting in fugitive diffs and commit views
+- Treesitter syntax highlighting in `:Git` diffs and commit views
-- Character-level intra-line diff highlighting
+- Diff header highlighting (`diff --git`, `index`, `---`, `+++`)
-- `:Gdiff` unified diff against any revision
+- `:Gdiffsplit` / `:Gvdiffsplit` syntax through diff backgrounds
-- Background-only diff colors for `&diff` buffers
+- `:Gdiff` unified diff against any git revision with syntax highlighting
-- Inline merge conflict detection, highlighting, and resolution
+- Fugitive status buffer keymaps (`du`/`dU`) for unified diffs
-- Vim syntax fallback, context padding, configurable blend/debounce
+- Background-only diff colors for any `&diff` buffer (`:diffthis`, `vimdiff`)
+- Vim syntax fallback for languages without a treesitter parser
+- Hunk header context highlighting (`@@ ... @@ function foo()`)
+- Character-level (intra-line) diff highlighting for changed characters
+- Inline merge conflict detection, highlighting, and resolution keymaps
+- Configurable debouncing, max lines, diff prefix concealment, blend alpha, and
+  highlight overrides
 
 ## Requirements
 

doc/diffs.nvim.txt

@@ -85,7 +85,6 @@ Configuration is done via `vim.g.diffs`. Set this before the plugin loads:
         enabled = true,
         disable_diagnostics = true,
         show_virtual_text = true,
-        show_actions = false,
         keymaps = {
           ours = 'doo',
           theirs = 'dot',
@@ -417,7 +416,6 @@ Configuration: ~
         enabled = true,
         disable_diagnostics = true,
         show_virtual_text = true,
-        show_actions = false,
         keymaps = {
           ours = 'doo',
           theirs = 'dot',
@@ -444,32 +442,9 @@ Configuration: ~
                              diagnostics alone.
 
         {show_virtual_text}  (boolean, default: true)
-                             Show `(current)` and `(incoming)` labels at
+                             Show virtual text labels (" current" and
-                             the end of `<<<<<<<` and `>>>>>>>` marker
+                             " incoming") at the end of `<<<<<<<` and
-                             lines. Also controls hunk hints in merge
+                             `>>>>>>>` marker lines.
-                             diff views.
-
-        {format_virtual_text} (function|nil, default: nil)
-                             Custom formatter for virtual text labels.
-                             Receives `(side, keymap)` where `side` is
-                             `"ours"` or `"theirs"` and `keymap` is the
-                             configured keymap string or `false`. Return
-                             a string (label text without parens) or
-                             `nil` to hide the label. Example: >lua
-                                 format_virtual_text = function(side, keymap)
-                                   if keymap then
-                                     return side .. ' [' .. keymap .. ']'
-                                   end
-                                   return side
-                                 end
-<
-
-        {show_actions}       (boolean, default: false)
-                             Show a codelens-style action line above each
-                             `<<<<<<<` marker listing available resolution
-                             keymaps. Renders as virtual lines using the
-                             `DiffsConflictActions` highlight group.
-                             Only keymaps that are not `false` appear.
 
         {keymaps}            (table, default: see above)
                              Buffer-local keymaps for conflict resolution
@@ -712,10 +687,6 @@ Conflict highlights: ~
                                                       *DiffsConflictBaseNr*
     DiffsConflictBaseNr Line number for base content lines (diff3).
 
-                                                    *DiffsConflictActions*
-    DiffsConflictActions Dimmed foreground (no bold) for the codelens-style
-                        action line shown when `show_actions` is true.
-
 Diff mode window highlights: ~
 These are used for |winhighlight| remapping in `&diff` windows.
 

lua/diffs/conflict.lua

@@ -92,17 +92,6 @@ local function parse_buffer(bufnr)
   return M.parse(lines)
 end
 
----@param side string
----@param config diffs.ConflictConfig
----@return string?
-local function get_virtual_text_label(side, config)
-  if config.format_virtual_text then
-    local keymap = side == 'ours' and config.keymaps.ours or config.keymaps.theirs
-    return config.format_virtual_text(side, keymap)
-  end
-  return side == 'ours' and 'current' or 'incoming'
-end
-
 ---@param bufnr integer
 ---@param regions diffs.ConflictRegion[]
 ---@param config diffs.ConflictConfig
@@ -118,37 +107,10 @@ local function apply_highlights(bufnr, regions, config)
     })
 
     if config.show_virtual_text then
-      local ours_label = get_virtual_text_label('ours', config)
+      pcall(vim.api.nvim_buf_set_extmark, bufnr, ns, region.marker_ours, 0, {
-      if ours_label then
+        virt_text = { { ' (current)', 'DiffsConflictMarker' } },
-        pcall(vim.api.nvim_buf_set_extmark, bufnr, ns, region.marker_ours, 0, {
+        virt_text_pos = 'eol',
-          virt_text = { { ' (' .. ours_label .. ')', 'DiffsConflictMarker' } },
+      })
-          virt_text_pos = 'eol',
-        })
-      end
-    end
-
-    if config.show_actions then
-      local parts = {}
-      local actions = {
-        { 'Current', config.keymaps.ours },
-        { 'Incoming', config.keymaps.theirs },
-        { 'Both', config.keymaps.both },
-        { 'None', config.keymaps.none },
-      }
-      for _, action in ipairs(actions) do
-        if action[2] then
-          if #parts > 0 then
-            table.insert(parts, { ' \226\148\130 ', 'DiffsConflictActions' })
-          end
-          table.insert(parts, { ('%s (%s)'):format(action[1], action[2]), 'DiffsConflictActions' })
-        end
-      end
-      if #parts > 0 then
-        pcall(vim.api.nvim_buf_set_extmark, bufnr, ns, region.marker_ours, 0, {
-          virt_lines = { parts },
-          virt_lines_above = true,
-        })
-      end
     end
 
     for line = region.ours_start, region.ours_end - 1 do
@@ -214,13 +176,10 @@ local function apply_highlights(bufnr, regions, config)
     })
 
     if config.show_virtual_text then
-      local theirs_label = get_virtual_text_label('theirs', config)
+      pcall(vim.api.nvim_buf_set_extmark, bufnr, ns, region.marker_theirs, 0, {
-      if theirs_label then
+        virt_text = { { ' (incoming)', 'DiffsConflictMarker' } },
-        pcall(vim.api.nvim_buf_set_extmark, bufnr, ns, region.marker_theirs, 0, {
+        virt_text_pos = 'eol',
-          virt_text = { { ' (' .. theirs_label .. ')', 'DiffsConflictMarker' } },
+      })
-          virt_text_pos = 'eol',
-        })
-      end
     end
   end
 end

lua/diffs/git.lua

@@ -1,19 +1,13 @@
 local M = {}
 
-local repo_root_cache = {}
-
 ---@param filepath string
 ---@return string?
 function M.get_repo_root(filepath)
   local dir = vim.fn.fnamemodify(filepath, ':h')
-  if repo_root_cache[dir] ~= nil then
-    return repo_root_cache[dir]
-  end
   local result = vim.fn.systemlist({ 'git', '-C', dir, 'rev-parse', '--show-toplevel' })
   if vim.v.shell_error ~= 0 then
     return nil
   end
-  repo_root_cache[dir] = result[1]
   return result[1]
 end
 

lua/diffs/highlight.lua

@@ -238,7 +238,7 @@ local function highlight_vim_syntax(bufnr, ns, hunk, code_lines, covered_lines,
 
   local spans = {}
 
-  pcall(vim.api.nvim_buf_call, scratch, function()
+  vim.api.nvim_buf_call(scratch, function()
     vim.cmd('setlocal syntax=' .. ft)
     vim.cmd('redraw')
 
@@ -256,7 +256,7 @@ local function highlight_vim_syntax(bufnr, ns, hunk, code_lines, covered_lines,
     spans = M.coalesce_syntax_spans(query_fn, code_lines)
   end)
 
-  pcall(vim.api.nvim_buf_delete, scratch, { force = true })
+  vim.api.nvim_buf_delete(scratch, { force = true })
 
   local hunk_line_count = #hunk.lines
   local extmark_count = 0

lua/diffs/init.lua

@@ -41,8 +41,6 @@
 ---@field enabled boolean
 ---@field disable_diagnostics boolean
 ---@field show_virtual_text boolean
----@field format_virtual_text? fun(side: string, keymap: string|false): string?
----@field show_actions boolean
 ---@field keymaps diffs.ConflictKeymaps
 
 ---@class diffs.Config
@@ -130,7 +128,6 @@ local default_config = {
     enabled = true,
     disable_diagnostics = true,
     show_virtual_text = true,
-    show_actions = false,
     keymaps = {
       ours = 'doo',
       theirs = 'dot',
@@ -203,9 +200,7 @@ local function create_debounced_highlight(bufnr)
           timer = nil
           t:close()
         end
-        if vim.api.nvim_buf_is_valid(bufnr) then
+        highlight_buffer(bufnr)
-          highlight_buffer(bufnr)
-        end
       end)
     )
   end
@@ -279,7 +274,6 @@ local function compute_highlight_groups()
   vim.api.nvim_set_hl(0, 'DiffsConflictTheirs', { default = true, bg = blended_theirs })
   vim.api.nvim_set_hl(0, 'DiffsConflictBase', { default = true, bg = blended_base })
   vim.api.nvim_set_hl(0, 'DiffsConflictMarker', { default = true, fg = 0x808080, bold = true })
-  vim.api.nvim_set_hl(0, 'DiffsConflictActions', { default = true, fg = 0x808080 })
   vim.api.nvim_set_hl(
     0,
     'DiffsConflictOursNr',
@@ -394,8 +388,6 @@ local function init()
       ['conflict.enabled'] = { opts.conflict.enabled, 'boolean', true },
       ['conflict.disable_diagnostics'] = { opts.conflict.disable_diagnostics, 'boolean', true },
       ['conflict.show_virtual_text'] = { opts.conflict.show_virtual_text, 'boolean', true },
-      ['conflict.format_virtual_text'] = { opts.conflict.format_virtual_text, 'function', true },
-      ['conflict.show_actions'] = { opts.conflict.show_actions, 'boolean', true },
       ['conflict.keymaps'] = { opts.conflict.keymaps, 'table', true },
     })
 

lua/diffs/lib.lua

@@ -8,9 +8,6 @@ local cached_handle = nil
 ---@type boolean
 local download_in_progress = false
 
----@type fun(handle: table?)[]
-local pending_callbacks = {}
-
 ---@return string
 local function get_os()
   local os_name = jit.os:lower()
@@ -167,10 +164,9 @@ function M.ensure(callback)
     return
   end
 
-  table.insert(pending_callbacks, callback)
-
   if download_in_progress then
-    dbg('download already in progress, queued callback')
+    dbg('download already in progress')
+    callback(nil)
     return
   end
 
@@ -196,25 +192,21 @@ function M.ensure(callback)
   vim.system(cmd, {}, function(result)
     download_in_progress = false
     vim.schedule(function()
-      local handle = nil
       if result.code ~= 0 then
         vim.notify('[diffs] failed to download libvscode_diff', vim.log.levels.WARN)
         dbg('curl failed: %s', result.stderr or '')
-      else
+        callback(nil)
-        local f = io.open(version_path(), 'w')
+        return
-        if f then
-          f:write(EXPECTED_VERSION)
-          f:close()
-        end
-        vim.notify('[diffs] libvscode_diff downloaded', vim.log.levels.INFO)
-        handle = M.load()
       end
 
-      local cbs = pending_callbacks
+      local f = io.open(version_path(), 'w')
-      pending_callbacks = {}
+      if f then
-      for _, cb in ipairs(cbs) do
+        f:write(EXPECTED_VERSION)
-        cb(handle)
+        f:close()
       end
+
+      vim.notify('[diffs] libvscode_diff downloaded', vim.log.levels.INFO)
+      callback(M.load())
     end)
   end)
 end

lua/diffs/merge.lua

@@ -338,43 +338,6 @@ function M.goto_prev(bufnr)
   vim.api.nvim_win_set_cursor(0, { candidates[#candidates].start_line + 1, 0 })
 end
 
----@param bufnr integer
----@param config diffs.ConflictConfig
-local function apply_hunk_hints(bufnr, config)
-  if not config.show_virtual_text then
-    return
-  end
-
-  local hunks = M.parse_hunks(bufnr)
-  for _, hunk in ipairs(hunks) do
-    if M.is_resolved(bufnr, hunk.index) then
-      add_resolved_virtual_text(bufnr, hunk)
-    else
-      local parts = {}
-      local actions = {
-        { 'current', config.keymaps.ours },
-        { 'incoming', config.keymaps.theirs },
-        { 'both', config.keymaps.both },
-        { 'none', config.keymaps.none },
-      }
-      for _, action in ipairs(actions) do
-        if action[2] then
-          if #parts > 0 then
-            table.insert(parts, { ' | ', 'Comment' })
-          end
-          table.insert(parts, { ('%s: %s'):format(action[2], action[1]), 'Comment' })
-        end
-      end
-      if #parts > 0 then
-        pcall(vim.api.nvim_buf_set_extmark, bufnr, ns, hunk.start_line, 0, {
-          virt_text = parts,
-          virt_text_pos = 'eol',
-        })
-      end
-    end
-  end
-end
-
 ---@param bufnr integer
 ---@param config diffs.ConflictConfig
 function M.setup_keymaps(bufnr, config)
@@ -395,8 +358,6 @@ function M.setup_keymaps(bufnr, config)
     end
   end
 
-  apply_hunk_hints(bufnr, config)
-
   vim.api.nvim_create_autocmd('BufWipeout', {
     buffer = bufnr,
     callback = function()

spec/conflict_spec.lua

@@ -6,7 +6,6 @@ local function default_config(overrides)
     enabled = true,
     disable_diagnostics = false,
     show_virtual_text = true,
-    show_actions = false,
     keymaps = {
       ours = 'doo',
       theirs = 'dot',
@@ -686,158 +685,4 @@ describe('conflict', function()
       helpers.delete_buffer(bufnr)
     end)
   end)
-
-  describe('virtual text formatting', function()
-    after_each(function()
-      conflict.detach(vim.api.nvim_get_current_buf())
-    end)
-
-    it('default labels show current and incoming without keymaps', function()
-      local bufnr = create_file_buffer({
-        '<<<<<<< HEAD',
-        'local x = 1',
-        '=======',
-        'local x = 2',
-        '>>>>>>> feature',
-      })
-
-      conflict.attach(bufnr, default_config())
-
-      local extmarks = get_extmarks(bufnr)
-      local labels = {}
-      for _, mark in ipairs(extmarks) do
-        if mark[4] and mark[4].virt_text then
-          table.insert(labels, mark[4].virt_text[1][1])
-        end
-      end
-      assert.are.equal(2, #labels)
-      assert.are.equal(' (current)', labels[1])
-      assert.are.equal(' (incoming)', labels[2])
-
-      helpers.delete_buffer(bufnr)
-    end)
-
-    it('uses custom format_virtual_text function', function()
-      local bufnr = create_file_buffer({
-        '<<<<<<< HEAD',
-        'local x = 1',
-        '=======',
-        'local x = 2',
-        '>>>>>>> feature',
-      })
-
-      conflict.attach(
-        bufnr,
-        default_config({
-          format_virtual_text = function(side)
-            return side == 'ours' and 'OURS' or 'THEIRS'
-          end,
-        })
-      )
-
-      local extmarks = get_extmarks(bufnr)
-      local labels = {}
-      for _, mark in ipairs(extmarks) do
-        if mark[4] and mark[4].virt_text then
-          table.insert(labels, mark[4].virt_text[1][1])
-        end
-      end
-      assert.are.equal(2, #labels)
-      assert.are.equal(' (OURS)', labels[1])
-      assert.are.equal(' (THEIRS)', labels[2])
-
-      helpers.delete_buffer(bufnr)
-    end)
-
-    it('hides label when format_virtual_text returns nil', function()
-      local bufnr = create_file_buffer({
-        '<<<<<<< HEAD',
-        'local x = 1',
-        '=======',
-        'local x = 2',
-        '>>>>>>> feature',
-      })
-
-      conflict.attach(
-        bufnr,
-        default_config({
-          format_virtual_text = function()
-            return nil
-          end,
-        })
-      )
-
-      local extmarks = get_extmarks(bufnr)
-      local virt_text_count = 0
-      for _, mark in ipairs(extmarks) do
-        if mark[4] and mark[4].virt_text then
-          virt_text_count = virt_text_count + 1
-        end
-      end
-      assert.are.equal(0, virt_text_count)
-
-      helpers.delete_buffer(bufnr)
-    end)
-  end)
-
-  describe('action lines', function()
-    after_each(function()
-      conflict.detach(vim.api.nvim_get_current_buf())
-    end)
-
-    it('adds virt_lines when show_actions is true', function()
-      local bufnr = create_file_buffer({
-        '<<<<<<< HEAD',
-        'local x = 1',
-        '=======',
-        'local x = 2',
-        '>>>>>>> feature',
-      })
-
-      conflict.attach(bufnr, default_config({ show_actions = true }))
-
-      local extmarks = get_extmarks(bufnr)
-      local virt_lines_count = 0
-      for _, mark in ipairs(extmarks) do
-        if mark[4] and mark[4].virt_lines then
-          virt_lines_count = virt_lines_count + 1
-        end
-      end
-      assert.are.equal(1, virt_lines_count)
-
-      helpers.delete_buffer(bufnr)
-    end)
-
-    it('omits disabled keymaps from action line', function()
-      local bufnr = create_file_buffer({
-        '<<<<<<< HEAD',
-        'local x = 1',
-        '=======',
-        'local x = 2',
-        '>>>>>>> feature',
-      })
-
-      conflict.attach(
-        bufnr,
-        default_config({ show_actions = true, keymaps = { both = false, none = false } })
-      )
-
-      local extmarks = get_extmarks(bufnr)
-      for _, mark in ipairs(extmarks) do
-        if mark[4] and mark[4].virt_lines then
-          local line = mark[4].virt_lines[1]
-          local text = ''
-          for _, chunk in ipairs(line) do
-            text = text .. chunk[1]
-          end
-          assert.is_truthy(text:find('Current'))
-          assert.is_truthy(text:find('Incoming'))
-          assert.is_falsy(text:find('Both'))
-          assert.is_falsy(text:find('None'))
-        end
-      end
-
-      helpers.delete_buffer(bufnr)
-    end)
-  end)
 end)

spec/merge_spec.lua

@@ -6,7 +6,6 @@ local function default_config(overrides)
     enabled = true,
     disable_diagnostics = false,
     show_virtual_text = true,
-    show_actions = false,
     keymaps = {
       ours = 'doo',
       theirs = 'dot',
@@ -618,65 +617,6 @@ describe('merge', function()
     end)
   end)
 
-  describe('hunk hints', function()
-    it('adds keymap hints on hunk header lines', function()
-      local d_bufnr = create_diff_buffer({
-        'diff --git a/file.lua b/file.lua',
-        '--- a/file.lua',
-        '+++ b/file.lua',
-        '@@ -1,1 +1,1 @@',
-        '-local x = 1',
-        '+local x = 2',
-      })
-
-      merge.setup_keymaps(d_bufnr, default_config())
-
-      local extmarks =
-        vim.api.nvim_buf_get_extmarks(d_bufnr, merge.get_namespace(), 0, -1, { details = true })
-      local hint_marks = {}
-      for _, mark in ipairs(extmarks) do
-        if mark[4] and mark[4].virt_text then
-          local text = ''
-          for _, chunk in ipairs(mark[4].virt_text) do
-            text = text .. chunk[1]
-          end
-          table.insert(hint_marks, { line = mark[2], text = text })
-        end
-      end
-      assert.are.equal(1, #hint_marks)
-      assert.are.equal(3, hint_marks[1].line)
-      assert.is_truthy(hint_marks[1].text:find('doo'))
-      assert.is_truthy(hint_marks[1].text:find('dot'))
-
-      helpers.delete_buffer(d_bufnr)
-    end)
-
-    it('does not add hints when show_virtual_text is false', function()
-      local d_bufnr = create_diff_buffer({
-        'diff --git a/file.lua b/file.lua',
-        '--- a/file.lua',
-        '+++ b/file.lua',
-        '@@ -1,1 +1,1 @@',
-        '-local x = 1',
-        '+local x = 2',
-      })
-
-      merge.setup_keymaps(d_bufnr, default_config({ show_virtual_text = false }))
-
-      local extmarks =
-        vim.api.nvim_buf_get_extmarks(d_bufnr, merge.get_namespace(), 0, -1, { details = true })
-      local virt_text_count = 0
-      for _, mark in ipairs(extmarks) do
-        if mark[4] and mark[4].virt_text then
-          virt_text_count = virt_text_count + 1
-        end
-      end
-      assert.are.equal(0, virt_text_count)
-
-      helpers.delete_buffer(d_bufnr)
-    end)
-  end)
-
   describe('fugitive integration', function()
     it('parse_file_line returns status for unmerged files', function()
       local fugitive = require('diffs.fugitive')