bug: extra backslash in stdpath in repro.lua

[S1M0N38]

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• I have read all the lazy.nvim docs
• I have updated the plugin to the latest version before submitting this issue
• I have searched the existing issues of lazy.nvim
• I have searched the existing issues of plugins related to this issue

Neovim version (nvim -v)

NVIM v0.10.1 Build type: Release LuaJIT 2.1.1725453128

Operating system/version

MacOS 14.4.1

Describe the bug

repro.lua suggested on https://lazy.folke.io/developers#reprolua modify XDG wrongly.

An extra backslash is inserted between .repro and its subdirs.

I encounter this bug when I was trying to install molten.nvim which is a rplugin. Neovim was not able to find path for rplugin.nvim manifest file (Issue)

Steps To Reproduce

Run the following repro.lua with nvim -u repro.lua

In my case I got

/Users/my-user/Developer/test-lazyvim/.repro//data/nvim
/Users/my-user/Developer/test-lazyvim/.repro//config/nvim
/Users/my-user/Developer/test-lazyvim/.repro//cache/nvim

Expected Behavior

Valid paths would be

/Users/my-user/Developer/test-lazyvim/.repro/data/nvim
/Users/my-user/Developer/test-lazyvim/.repro/config/nvim
/Users/my-user/Developer/test-lazyvim/.repro/cache/nvim

Repro

vim.env.LAZY_STDPATH = ".repro"

load(vim.fn.system("curl -s https://raw.githubusercontent.com/folke/lazy.nvim/main/bootstrap.lua"))()
require("lazy.minit").repro({ spec = { } })

vim.cmd('echo stdpath("data")  ')
vim.cmd('echo stdpath("config")')
vim.cmd('echo stdpath("cache") ')