fix: fix cpath component on windows (#166)

closes #164

Author: madmaxieee

doc/fff.nvim.txt

@@ -1,4 +1,4 @@
-*fff.nvim.txt*       For Neovim >= 0.10.0       Last change: 2025 September 17
+*fff.nvim.txt*        For Neovim >= 0.10.0        Last change: 2025 October 04
 
 ==============================================================================
 Table of Contents                                 *fff.nvim-table-of-contents*

lua/fff/download.lua

@@ -187,4 +187,11 @@ function M.get_binary_path()
   return get_binary_path(plugin_dir)
 end
 
+function M.get_binary_cpath_component()
+  local plugin_dir = vim.fn.fnamemodify(debug.getinfo(1, 'S').source:sub(2), ':h:h')
+  local binary_dir = get_binary_dir(plugin_dir)
+  local extension = system.get_lib_extension()
+  return binary_dir .. '/lib?.' .. extension
+end
+
 return M

lua/fff/rust/init.lua

@@ -12,7 +12,7 @@ end
 local base_path = debug.getinfo(1).source:match('@?(.*/)')
 
 local paths = {
-  download.get_binary_path(),
+  download.get_binary_cpath_component(),
   base_path .. '../../../target/release/lib?' .. get_lib_extension(),
   base_path .. '../../../target/release/?' .. get_lib_extension(),
 }