fix: calculate blob line without strdisplaywidth

[aileot]

Sorry, vim.fn.getline() did not solve the issue #23.
I checked out at a wrong path due to lazy.nvim dev option :(

Try opening a luac file under ~/.cache/nvim/luac/.

[Bekaboo]

Cannot reproduce:

https://asciinema.org/a/z7s9MvvQtz4LGhV8JimntfJij

minimal.lua:

local tmp = vim.env.TMPDIR or vim.env.TEMPDIR or vim.env.TMP or vim.env.TEMP or "/tmp"
local data = tmp .. "/" .. (vim.env.NVIM_APPNAME or "nvim")
local packages_root = data .. "/site"
local cloned_root = packages_root .. "/pack/packages/start"
local cloned_path = cloned_root .. "/deadcolumn.nvim"
local url = "https://github.com/Bekaboo/deadcolumn.nvim.git"

vim.opt.rtp:prepend(packages_root)
if not vim.loop.fs_stat(cloned_path) then
	vim.fn.mkdir(cloned_root, "p")
	vim.fn.system({ "git", "clone", url, cloned_path })
end
vim.opt.rtp:prepend(cloned_path)

require("deadcolumn").setup()

[aileot]

It turns out that the issue only happens with vim.tbl_map().
https://asciinema.org/a/py7SGUREbB0tSds34hJXLwZGJ

To reproduce the issue, the minimal.lua requires some changes:

local tmp = vim.env.TMPDIR or vim.env.TEMPDIR or vim.env.TMP or vim.env.TEMP or "/tmp"
local data = tmp .. "/" .. (vim.env.NVIM_APPNAME or "nvim")
local packages_root = data .. "/site"
local cloned_root = packages_root .. "/pack/packages/start"
local cloned_path = cloned_root .. "/deadcolumn.nvim"
local url = "https://github.com/Bekaboo/deadcolumn.nvim.git"

vim.opt.rtp:prepend(packages_root)
if not vim.loop.fs_stat(cloned_path) then
  vim.fn.mkdir(cloned_root, "p")
  vim.fn.system({ "git", "clone", url, cloned_path })
end
vim.opt.rtp:prepend(cloned_path)

-- Just change here.
-- require("deadcolumn").setup()
require("deadcolumn").setup({ scope = "buffer" })
vim.o.colorcolumn = "1"

[Bekaboo]

Ahh good catch!

It turns out that the issue only happens with vim.tbl_map()

I forget to use vim.fn.line() instead of the api function to get lines in other scope configs. vim.tbl_map() is not the culprit.