Creating a filetype based on a directory path

I am investigating the minisnip plug in and I thought I would use it to learn some vimscript as well.

Since minisnip doesn't use file extensions for its snippets, it defines a global path for them (g:minisnip_dir).

I created the following ftdetect file:

" get the snippets directory
let snippet_dir = expand(g:minisnip_dir) . "*"

execute 'autocmd BufRead,BufNewFile ' . snippet_dir . ' set filetype=minisnip'

macOS:

works as is

Windows:

I have to add to following in my vimrc for it to work:

let g:minisnip_dir = '/path/to/minisnip'

Someone else testing gets the following error:

Error detected while processing /home/joe/.config/nvim/plugged/vim-minisnip/ftdetect/minisnip.vim:
line 11:
E121: Undefined variable: g:minisnip_dir
E116: Invalid arguments for function expand
E15: Invalid expression: expand(g:minisnip_dir) . "**/*"
line 13:
E121: Undefined variable: snippet_dir
E15: Invalid expression: 'autocmd BufRead,BufNewFile ' . snippet_dir . ' set filetype=minisnip'
Press ENTER or type command to continue

If I do:

:let snippet_dir = expand(g:minisnip_dir) . "*"
:echo snippet_dir

It expands to the correct directory in ALL of the cases. :(

So I am stumped.

Help?

Thanks!

Bob

--
--
You received this message from the "vim_use" maillist.
Do not top-post! Type your reply below the text you are replying to.
For more information, visit http://www.vim.org/maillist.php

---
You received this message because you are subscribed to the Google Groups "vim_use" group.
To unsubscribe from this group and stop receiving emails from it, send an email to vim_use+unsubscribe@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.