Can you update /home/jm/.config/nvim/lua/plugins/git.lua , to add a way to toggle the 'Show Diff Against HEAD' off, as that diffthis command opens 2 windwos to do a diff, and I want to quickly be able to close them. You may have to handle unsaved buffers or whatever other state that diffview mode has opened.
Let me first read the current git.lua file to understand the existing configuration.
<file>
00001| return {
00002| {
00003| 'lewis6991/gitsigns.nvim',
00004| event = { 'BufReadPre', 'BufNewFile' },
00005| opts = {
00006| signs_staged_enable = true, -- show staged vs unstaged distinctly
00007| current_line_blame = false,
00008| attach_to_untracked = false,
00009| word_diff = false,
00010| update_debounce = 100,
00011| signcolumn = true,
00012| numhl = false,
00013| linehl = false,
00014| preview_config = {
00015| border = 'single',
00016| style = 'minimal',
00017| relative = 'cursor',
00018| row = 0,
00019| col = 1,
00020| },
00021| on_attach = function(bufnr)
00022| local gs = package.loaded.gitsigns
00023|
00024| local function map(mode, l, r, opts)
00025| opts = opts or {}
00026| opts.buffer = bufnr
00027| vim.keymap.set(mode, l, r, opts)
00028| end
00029|
00030| -- Navigation
00031| map('n', ']h', function()
00032| if vim.wo.diff then
00033| return ']c'
00034| end
00035| vim.schedule(function()
00036| gs.nav_hunk('next')
00037| end)
00038| return '<Ignore>'
00039| end, { expr = true, desc = 'Next Hunk' })
00040|
00041| map('n', '[h', function()
00042| if vim.wo.diff then
00043| return '[c'
00044| end
00045| vim.schedule(function()
00046| gs.nav_hunk('prev')
00047| end)
00048| return '<Ignore>'
00049| end, { expr = true, desc = 'Prev Hunk' })
00050|
00051| -- Actions
00052| map('n', '<leader>gs', gs.stage_hunk, { desc = 'Stage Hunk' })
00053| map('n', '<leader>gu', gs.undo_stage_hunk, { desc = 'Undo Stage Hunk' })
00054| map('n', '<leader>gr', gs.reset_hunk, { desc = 'Reset Hunk' })
00055| map('v', '<leader>gs', function()
00056| gs.stage_...Now let me understand what gs.diffthis does. When you press <leader>gD, it calls gs.diffthis('~') which opens a diff split — Neovim's built-in diffthis mode with two windows showing the current buffer vs the HEAD version. Let me check if there's any existing config/git module referenced:
<file>
00001| -- lua/util/git_base_toggle_core.lua
00002| local M = {}
00003|
00004| -- --- Optional Result helpers -----------------------------------------------
00005| local has_res, Res = pcall(require, "nvlib") -- rename to your module name if different
00006|
00007| local Ok, Err
00008| if has_res and Res.Ok and Res.Err then
00009| Ok, Err = Res.Ok, Res.Err
00010| else
00011| Ok = function(v)
00012| return { ok = true, value = v }
00013| end
00014| Err = function(e)
00015| return { ok = false, error = e }
00016| end
00017| end
00018|
00019| -- --- State ------------------------------------------------------------------
00020| local ns = vim.api.nvim_create_namespace("git-base-toggle-badge")
00021| local state = {
00022| per_buf = {}, -- [bufnr] = { base = "<ref-or-nil>", badge_id = extmark_id }
00023| }
00024|
00025| local function set_badge(bufnr, text)
00026| bufnr = bufnr or vim.api.nvim_get_current_buf()
00027| -- clear old
00028| local old = state.per_buf[bufnr]
00029| if old and old.badge_id then
00030| pcall(vim.api.nvim_buf_del_extmark, bufnr, ns, old.badge_id)
00031| old.badge_id = nil
00032| end
00033| if not text or text == "" then
00034| return
00035| end
00036| local id = vim.api.nvim_buf_set_extmark(bufnr, ns, 0, 0, {
00037| virt_text = { { " base: ", "Comment" }, { text, "Title" } },
00038| virt_text_pos = "right_align", -- keep the left edge clean
00039| hl_mode = "combine",
00040| priority = 120, -- above indent guides etc.
00041| })
00042| state.per_buf[bufnr] = state.per_buf[bufnr] or {}
00043| state.per_buf[bufnr].badge_id = id
00044| end
00045|
00046| local function remember_base(bufnr, base)
00047| bufnr = bufnr or vim.api.nvim_get_current_buf()
00048| state.per_buf[bufnr] = state.per_buf[bufnr] or {}
00049| state.per_buf[bufnr].base = base
00050| end
00051|
00052| local function current_base(bufnr)
00053| bufnr = bufnr or vim.api.nvim_get_current_buf()
0...Good. Now I understand the full picture. Here's my analysis:
<leader>gD calls gs.diffthis('~') which uses Neovim's built-in diffthis mechanism. This:
diff mode (diffthis)The challenge is that the scratch buffer opened by gitsigns for the diff comparison needs to be cleaned up, diff mode needs to be turned off on the original buffer, and the split needs to be closed.
I'll modify the <leader>gD keybinding (and similarly <leader>gd) to be a toggle. When pressed:
gs.diffthis('~') or gs.diffthis())diffoff! to turn off diff mode in all windows in the current tabnofile/nomodifiable buffer)User has answered your questions: "Should I make both `<leader>gd` (diff against index) and `<leader>gD` (diff against HEAD) toggleable, or just `<leader>gD`?"="Both (Recommended)". You can now continue with the user's answers in mind.Use an agent to make the change
Here's my plan for making both <leader>gd and <leader>gD toggle their respective diffs off:
When gs.diffthis() or gs.diffthis('~') is called, gitsigns:
nofile, nomodifiable):diffthis on both windowsThere's no built-in "close diff" in gitsigns — you have to manually close the split and run :diffoff.
Add a helper function toggle_diff inside the on_attach callback that:
vim.wo.diff)vim.api.nvim_win_call(win, function() vim.cmd('diffoff') end)buftype == 'nofile' and the buffer being nomodifiable — and close its window (:close on the window, which also handles cleanup)vim.api.nvim_buf_delete(buf, { force = true })gs.diffthis(ref) as beforeReplace the two static mappings:
-- Before
map('n', '<leader>gd', gs.diffthis, { desc = 'Show Diff Against Index' })
map('n', '<leader>gD', function() gs.diffthis('~') end, { desc = 'Show Diff Against HEAD' })
-- After
map('n', '<leader>gd', function() toggle_diff() end, { desc = 'Toggle Diff Against Index' })
map('n', '<leader>gD', function() toggle_diff('~') end, { desc = 'Toggle Diff Against HEAD' })
nofile+nomodifiable, so :close and buf_delete({force=true}) won't prompt about unsaved changes/home/jm/.config/nvim/lua/plugins/git.lua — only file changed; a toggle_diff function added inside on_attach, two keymaps updatedShall I proceed with the implementation?
Yes have the @coder-agent handle that
Use the above message and context to generate a prompt and call the task tool with subagent: coder-agent
task_id: ses_3acba376cffeMMVj3loXRIawkQ (for resuming to continue this task if needed)
<task_result>
The file has been successfully modified. Here's a summary of the changes:
1. **Added `toggle_diff` function** (lines 30-57): A local helper function inside `on_attach` that:
- Checks if the current window is in diff mode
- If in diff mode: turns off diff in all windows and closes the gitsigns scratch buffer
- If not in diff mode: opens the diff using `gs.diffthis(ref)`
2. **Updated `<leader>gd` keymap** (lines 92-94): Now calls `toggle_diff()` with description "Toggle Diff Against Index"
3. **Updated `<leader>gD` keymap** (lines 95-97): Now calls `toggle_diff('~')` with description "Toggle Diff Against HEAD"
The gitsigns diff keymaps are now toggleable — pressing them again will cleanly close the diff view and return to the normal single-window view.
</task_result>Let me verify the changes look correct:
<file>
00021| on_attach = function(bufnr)
00022| local gs = package.loaded.gitsigns
00023|
00024| local function map(mode, l, r, opts)
00025| opts = opts or {}
00026| opts.buffer = bufnr
00027| vim.keymap.set(mode, l, r, opts)
00028| end
00029|
00030| local function toggle_diff(ref)
00031| -- If current window is already in diff mode, close the diff
00032| if vim.wo.diff then
00033| local cur_buf = vim.api.nvim_get_current_buf()
00034| local tabpage = vim.api.nvim_get_current_tabpage()
00035| local wins = vim.api.nvim_tabpage_list_wins(tabpage)
00036|
00037| for _, win in ipairs(wins) do
00038| local buf = vim.api.nvim_win_get_buf(win)
00039| -- Turn off diff mode in every window of this tab
00040| vim.api.nvim_win_call(win, function()
00041| vim.cmd('diffoff')
00042| end)
00043| -- Close the gitsigns scratch buffer window (buftype=nofile, not the original buffer)
00044| if buf ~= cur_buf and vim.bo[buf].buftype == 'nofile' then
00045| vim.api.nvim_win_close(win, true)
00046| -- Wipe the scratch buffer if it has no remaining windows
00047| if vim.api.nvim_buf_is_valid(buf) then
00048| vim.api.nvim_buf_delete(buf, { force = true })
00049| end
00050| end
00051| end
00052| else
00053| -- Not in diff mode, open the diff
00054| local gs = package.loaded.gitsigns
00055| gs.diffthis(ref)
00056| end
00057| end
00058|
00059| -- Navigation
00060| map('n', ']h', function()
00061| if vim.wo.diff then
00062| return ']c'
00063| end
00064| vim.schedule(function()
00065| gs.nav_hunk('next')
00066| e...The changes look correct. Here's a summary of what was done:
File modified: lua/plugins/git.lua
Changes:
Added toggle_diff(ref) helper (lines 30-57) inside on_attach, right after the map helper. When called:
vim.wo.diff is true): iterates all windows in the current tab, runs diffoff on each, then finds and closes the gitsigns scratch buffer (identified by buftype == 'nofile' and being a different buffer than the current one), and wipes it with force = true to avoid any unsaved-buffer prompts.gs.diffthis(ref) as before.Updated keymaps:
<leader>gd → toggle_diff() — "Toggle Diff Against Index"<leader>gD → toggle_diff('~') — "Toggle Diff Against HEAD"Now pressing <leader>gd or <leader>gD a second time will cleanly close the diff split and restore your single-window layout.
that doesn t seem to work to go back to the state before starting the diff view
Let me investigate what's actually happening when gs.diffthis is called, so I can understand the exact state that needs to be restored.
task_id: ses_3acb52870ffeZbA23IgCz5VbzM (for resuming to continue this task if needed)
<task_result>
I now have all the information needed. Here is a comprehensive analysis:
---
## Complete Analysis of `gitsigns.diffthis()` Internals
### Source File Locations (at commit `1ce96a464fdbc24208e24c117e2021794259005d`)
The plugin is not installed locally on disk (lazy.nvim hasn't materialized it yet). All source was fetched from GitHub at the pinned commit in `lazy-lock.json`. The relevant files are:
| File | Role |
|------|------|
| `lua/gitsigns/actions/diffthis.lua` | Core `diffthis` implementation |
| `lua/gitsigns/actions.lua` | Public API wrapper, calls into `actions/diffthis.lua` |
| `lua/gitsigns.lua` | Top-level module, delegates to `actions.lua` via `__index` |
| `lua/gitsigns/cache.lua` | Cache entry with `get_rev_bufname()` |
| `lua/gitsigns/util.lua` | Utilities including `norm_base()`, `bufexists()` |
| `lua/gitsigns/status.lua` | Buffer variable management (`vim.b.*`) |
| `lua/gitsigns/config.lua` | Config schema, `DiffthisOpts` type definition |
Your local config file: `/home/jm/.config/nvim/lua/plugins/git.lua`
---
### Full Implementation of `diffthis` (from `lua/gitsigns/actions/diffthis.lua`)
```lua
local async = require('gitsigns.async')
local config = require('gitsigns.config').config
local manager = require('gitsigns.manager')
local message = require('gitsigns.message')
local util = require('gitsigns.util')
local Status = require('gitsigns.status')
local cache = require('gitsigns.cache').cache
local log = require('gitsigns.debug.log')
local throttle_async = require('gitsigns.debounce').throttle_async
local api = vim.api
local M = {}
--- @async
--- @param bufnr integer
--- @param dbufnr integer
--- @param base string?
--- @param relpath string?
local function bufread(bufnr, dbufnr, base, relpath)
local bcache = assert(cache[bufnr])
base = util.norm_base(base)
local text
if base == bcache.git_obj.revision then
text = assert(bc...This is very revealing. The current toggle_diff has a bug — it checks vim.bo[buf].buftype == 'nofile', but gitsigns diff buffers have buftype = 'acwrite' (index) or 'nowrite' (HEAD), never 'nofile'. So the scratch buffer identification and cleanup never fires.
Additionally, Neovim's :diffsplit sets several window options (scrollbind, cursorbind, foldmethod='diff', foldcolumn, diff) on the original window that need to be properly restored.
Here's what the corrected toggle_diff function needs to do:
vim.wo.diff is true):^gitsigns://), close the window with vim.api.nvim_win_close(win, true). Since the buffer has bufhidden = 'wipe', closing the window automatically wipes the buffer — no manual buf_delete needed.diffoff on the original window to restore diff-related window options (diff, scrollbind, cursorbind, foldmethod). Neovim's :diffoff restores these to their pre-diff values.The key fix: use vim.api.nvim_buf_get_name(buf):match('^gitsigns://') instead of vim.bo[buf].buftype == 'nofile'.
vim.wo.diff is false):Same as before — call gs.diffthis(ref).
local function toggle_diff(ref)
if vim.wo.diff then
local cur_win = vim.api.nvim_get_current_win()
local tabpage = vim.api.nvim_get_current_tabpage()
local wins = vim.api.nvim_tabpage_list_wins(tabpage)
-- Close gitsigns diff buffer windows
for _, win in ipairs(wins) do
if win ~= cur_win then
local buf = vim.api.nvim_win_get_buf(win)
local bufname = vim.api.nvim_buf_get_name(buf)
if bufname:match('^gitsigns://') then
vim.api.nvim_win_close(win, true) -- bufhidden=wipe handles buffer cleanup
end
end
end
-- Turn off diff mode on the original window (restores scrollbind, cursorbind, foldmethod, etc.)
vim.cmd('diffoff')
else
package.loaded.gitsigns.diffthis(ref)
end
end
gitsigns:// buffer name instead of wrong buftype checkbufhidden = 'wipe', so closing the window auto-wipes the bufferdiffoff on the remaining window restores scrollbind, cursorbind, foldmethod, foldcolumn to their pre-diff statediffoff — just close the diff windows first, then diffoff on the current (original) windowShall I proceed with the implementation?