fix: offset encoding conversion on nvim 0.11.0 (#308)

* fix: #307

* feat: use vim.fn.has to check version, fallback offset encoding

---------

Co-authored-by: Liam Dyer <[email protected]>

Author: Euro20179

lua/blink/cmp/accept/text-edits.lua

@@ -46,7 +46,11 @@ local function get_line_byte_from_position(position, offset_encoding)
   -- character
   if col > 0 then
     local line = vim.api.nvim_buf_get_lines(bufnr, position.line, position.line + 1, true)[1] or ''
-    return vim.lsp.util._str_byteindex_enc(line, col, offset_encoding or 'utf-16')
+    if vim.fn.has('nvim-0.11.0') == 1 then
+      return vim.str_byteindex(line, offset_encoding or 'utf-16', col, false)
+    else
+      return vim.lsp.util._str_byteindex_enc(line, col, offset_encoding or 'utf-16')
+    end
   end
   return col
 end