Is rnvim_home correct on Windows?

[jalvesaq]

When converting VimScript to Lua in zotcite, the command vim.fn.expand("<script>:h:h") (used in R.nvim) didn't work as expected and the solution that I found was to extract the correct path from the vim.o.runtimepath. So, my question is: Does vim.fn.expand("<script>:h:h") work on Windows as it does in R.nvim on Linux? The command to allow one to answer the question is:

RConfigShow rnvim_home

The code used in zotcite is:

    local p = vim.o.runtimepath
    p = p:gsub(".*,(.*zotcite.*)", "%1")
    p = p:gsub(",.*", "")
    config.zotcite_home = p .. "/python3"

Even if the value of rnvim_home is correct on Windows, perhaps it would be safer to use the algorithm above in R.nvim too...

[jalvesaq]

Is this a better option?

diff --git a/lua/r/config.lua b/lua/r/config.lua
index e4704a6..72579be 100644
--- a/lua/r/config.lua
+++ b/lua/r/config.lua
@@ -292,7 +292,7 @@ local do_common_global = function()
     config.is_darwin = config.uname == "Darwin"
 
     -- config.rnvim_home should be the directory where the plugin files are.
-    config.rnvim_home = vim.fn.expand("<script>:h:h")
+    config.rnvim_home = debug.getinfo(1).short_src:gsub("/lua.*", "")
 
     -- config.uservimfiles must be a writable directory. It will be config.rnvim_home
     -- unless it's not writable. Then it wil be ~/.vim or ~/vimfiles.

@akthe-at, could you check this, please?

[akthe-at]

If I use debug.getinfo(1).short_src:gsub("/lua.*", "") it creates an odd shortened path of "...010/AppData/Local/nvim-data/lazy/R.nvim"
and errors out when trying to read an R file.

For reference my full path would be C:\Users\ARK010\AppData\Local\nvim-data\lazy\R.nvim
So you can see where its cutting off at with the ...

Did I understand what you were asking me to check correctly or did you want me to install zotcite and check there?

[jalvesaq]

It was just that. No need to install zotcite. The path, although odd, seems to be correct. Is it the same of vim.fn.expand("<script>:h:h")?

[akthe-at]

It seems like a broken path to me:

    -- config.rnvim_home should be the directory where the plugin files are.
    config.rnvim_home = debug.getinfo(1).short_src:gsub("/lua.*", "")
    vim.notify("test 1: " .. config.rnvim_home)

    config.rnvim_home = vim.fn.expand("<script>:h:h")
    vim.notify("test 2: " .. config.rnvim_home)

 Info 12:21:35 PM notify.info test 1: ...010/AppData/Local/nvim-data/lazy/R.nvim
 Info 12:21:35 PM notify.info test 2: C:\Users\ARK010\AppData\Local\nvim-data\lazy\R.nvim

[jalvesaq]

Yes, it's broken. Perhaps because we are using the field short_src and not source. Anyway, the relevant information is that vim.fn.expand("<script>:h:h") works which means that we don't have to change anything.

Thank you!