[Bug][Windows] Error executing vim.schedule lua callback ....async.lua: The coroutine failed.

[searleser97]

Description

Error executing vim.schedule lua callback: ...ocal/nvim-data/lazy/diffview.nvim/lua/diffview/async.lua:187: The coroutine failed
 with this message:
        context: cur_thread=main co_thread=<thread 0x02698deff6e8> co_func=...iffview.nvim/lua/diffview/scene/views/diff/diff_vi
ew.lua:327
...iffview.nvim/lua/diffview/scene/views/diff/diff_view.lua:426: attempt to index a nil value
stack traceback:
        ...iffview.nvim/lua/diffview/scene/views/diff/diff_view.lua: in function 'func'
        ...ocal/nvim-data/lazy/diffview.nvim/lua/diffview/async.lua:373: in function <...ocal/nvim-data/lazy/diffview.nvim/lua/d
iffview/async.lua:358>
stack traceback:
        [C]: in function 'error'
        ...ocal/nvim-data/lazy/diffview.nvim/lua/diffview/async.lua:187: in function 'raise'
        ...ocal/nvim-data/lazy/diffview.nvim/lua/diffview/async.lua:215: in function 'step'
        ...ocal/nvim-data/lazy/diffview.nvim/lua/diffview/async.lua:247: in function 'notify_all'
        ...ocal/nvim-data/lazy/diffview.nvim/lua/diffview/async.lua:222: in function 'step'
        ...ocal/nvim-data/lazy/diffview.nvim/lua/diffview/async.lua:399: in function <...ocal/nvim-data/lazy/diffview.nvim/lua/d
iffview/async.lua:391>

Expected behavior

No response

Actual behavior

it occassionally shows the error from the description.

Steps to reproduce

Stage a file or a couple of files from the panel on the left within diffview.

Health check

Output of :checkhealth diffview

==============================================================================
diffview:                                   require("diffview.health").check()

Checking plugin dependencies ~
- OK nvim-web-devicons installed.

Checking VCS tools ~
- The plugin requires at least one of the supported VCS tools to be valid.
- OK Git found.
- OK Git is up-to-date. (2.48.1.vfs.0.1)
- WARNING Configured `hg_cmd` is not executable: 'hg'

Log info

Relevant info from :DiffviewLog

[INFO  2025-03-18 09:23:13.447 -0700] .../Local/nvim-data/lazy/diffview.nvim/lua/diffview/lib.lua:24: [command call] :DiffviewOpen 
[INFO  2025-03-18 09:23:15.670 -0700] ...iffview.nvim/lua/diffview/scene/views/diff/diff_view.lua:488: [DiffView] Completed update for 1 files successfully (1135.784 ms)
[INFO  2025-03-18 09:23:33.894 -0700] ...iffview.nvim/lua/diffview/scene/views/diff/diff_view.lua:488: [DiffView] Completed update for 1 files successfully (911.825 ms)
[INFO  2025-03-18 09:23:34.834 -0700] ...iffview.nvim/lua/diffview/scene/views/diff/diff_view.lua:488: [DiffView] Completed update for 1 files successfully (1140.678 ms)
[INFO  2025-03-18 09:23:41.508 -0700] ...iffview.nvim/lua/diffview/scene/views/diff/diff_view.lua:488: [DiffView] Completed update for 1 files successfully (1745.895 ms)
[INFO  2025-03-18 09:26:38.820 -0700] ...iffview.nvim/lua/diffview/scene/views/diff/diff_view.lua:488: [DiffView] Completed update for 0 files successfully (775.599 ms)
[INFO  2025-03-18 09:38:17.889 -0700] .../Local/nvim-data/lazy/diffview.nvim/lua/diffview/lib.lua:24: [command call] :DiffviewOpen 
[INFO  2025-03-18 09:38:19.908 -0700] ...iffview.nvim/lua/diffview/scene/views/diff/diff_view.lua:488: [DiffView] Completed update for 2 files successfully (1046.563 ms)
[INFO  2025-03-18 09:38:25.063 -0700] ...iffview.nvim/lua/diffview/scene/views/diff/diff_view.lua:488: [DiffView] Completed update for 2 files successfully (1183.920 ms)
[INFO  2025-03-18 09:38:43.811 -0700] ...iffview.nvim/lua/diffview/scene/views/diff/diff_view.lua:488: [DiffView] Completed update for 2 files successfully (1305.081 ms)
[INFO  2025-03-18 09:38:44.133 -0700] ...iffview.nvim/lua/diffview/scene/views/diff/diff_view.lua:488: [DiffView] Completed update for 2 files successfully (1092.213 ms)
[INFO  2025-03-18 09:38:49.616 -0700] ...iffview.nvim/lua/diffview/scene/views/diff/diff_view.lua:488: [DiffView] Completed update for 2 files successfully (1526.261 ms)
[ERROR 2025-03-18 09:42:23.520 -0700] ...lazy/diffview.nvim/lua/diffview/vcs/adapters/hg/init.lua:53: [HgAdapter] Configured `hg_cmd` is not executable: 'hg'

Neovim version

0.11.0

Operating system and version

Windows

Minimal config

-- #######################################
-- ### USAGE: nvim --clean -u mini.lua ###
-- #######################################

local root = vim.fn.stdpath("run") .. "/nvim/diffview.nvim"
local plugin_dir = root .. "/plugins"
vim.fn.mkdir(plugin_dir, "p")

for _, name in ipairs({ "config", "data", "state", "cache" }) do
  vim.env[("XDG_%s_HOME"):format(name:upper())] = root .. "/" .. name
end

local plugins = {
  { "nvim-web-devicons", url = "https://github.com/nvim-tree/nvim-web-devicons.git" },
  { "diffview.nvim", url = "https://github.com/sindrets/diffview.nvim.git" },
  -- ##################################################################
  -- ### ADD PLUGINS THAT ARE _NECESSARY_ FOR REPRODUCING THE ISSUE ###
  -- ##################################################################
}

for _, spec in ipairs(plugins) do
  local install_path = plugin_dir .. "/" .. spec[1]
  if vim.fn.isdirectory(install_path) ~= 1 then
    if spec.url then
      print(string.format("Installing '%s'...", spec[1]))
      vim.fn.system({ "git", "clone", "--depth=1", spec.url, install_path })
    end
  end
  vim.opt.runtimepath:append(spec.path or install_path)
end

require("diffview").setup({
  -- ##############################################################################
  -- ### ADD DIFFVIEW.NVIM CONFIG THAT IS _NECESSARY_ FOR REPRODUCING THE ISSUE ###
  -- ##############################################################################
})

vim.opt.termguicolors = true
vim.cmd("colorscheme " .. (vim.fn.has("nvim-0.8") == 1 and "habamax" or "slate"))

-- ############################################################################
-- ### ADD INIT.LUA SETTINGS THAT ARE _NECESSARY_ FOR REPRODUCING THE ISSUE ###
-- ############################################################################

print("Ready!")

[searleser97]

Probably related to #528

[zdm]

Same problem

[zdm]

Ok, this is a problem with cygwin based git (mimgw or msys2 distributions).
It can return absolute paths in cygwin format: c:/aaa/bbb returned as /c/aaa/ccc.
So, when parse paths from the git output under Windows and relative path is expected and path starts with / - you need to convert it to the Windows form.
Something like this:

if vim.fn.has('win32') == 1 and string.sub(path, 1, 1) == '/' then
    path = string.gsub(string.sub(path, 2, 2) .. ':' .. string.sub(path, 3), '/', '\\')
end

[searleser97]

Ok, this is a problem with cygwin based git (mimgw or msys2 distributions). It can return absolute paths in cygwin format: c:/aaa/bbb returned as /c/aaa/ccc. So, when parse paths from the git output under Windows and relative path is expected and path starts with / - you need to convert it to the Windows form. Something like this:

if vim.fn.has('win32') == 1 and string.sub(path, 1, 1) == '/' then
path = string.gsub(string.sub(path, 2, 2) .. ':' .. string.sub(path, 3), '/', '\')
end

@zdm it seems you found the issue, could you raise a PR with the fix ?

[zdm]

PE: #574