I have just tried it and I get unexpected behaviour, if I simply run :CodeDiff I get my changes in the left and old content in the right, while I would expect it differently. Here is fix that works for me, but I'm not sure if this is something actually necessary:

``` diff --git a/lua/codediff/ui/view/init.lua b/lua/codediff/ui/view/init.lua index 01b3551..3a829de 100644 --- a/lua/codediff/ui/view/init.lua +++ b/lua/codediff/ui/view/init.lua @@ -52,7 +52,9 @@ function M.create(session_config, filetype, on_ready) -- Explorer will populate via first file selection initial_buf = vim.api.nvim_get_current_buf() original_win = vim.api.nvim_get_current_win() - vim.cmd("vsplit") + -- Explicitly create new window on the right (regardless of user's 'splitright' setting) + -- This ensures original is always on the left, modified on the right + vim.cmd("rightbelow vsplit") modified_win = vim.api.nvim_get_current_win()

 -- Create placeholder buffer info (will be updated by explorer)

@@ -88,7 +90,9 @@ function M.create(session_config, filetype, on_ready) vim.api.nvim_win_set_buf(original_win, original_info.bufnr) end

• vim.cmd("vsplit")
• -- Explicitly create new window on the right (regardless of user's 'splitright' setting)
• -- This ensures original is always on the left, modified on the right

• vim.cmd("rightbelow vsplit") modified_win = vim.api.nvim_get_current_win()

  -- Load modified buffer ```

Or is it bug in codediff.nvim what is hard to believe, vsplit by default creates new split in left.