Error: Index out of range when trying to accept suggestions inside comments

[cgimenes]

Copilot.lua version: f8d8d87
Neovim: 0.10.2

Error:

Error  19:46:32 msg_show.lua_error Error executing vim.schedule lua callback: .../neovim/0.10.2_1/share/nvim/runtime/lua/vim/lsp/util.lua:485: index out of range
stack traceback:
	[C]: in function 'get_line_byte_from_position'
	.../neovim/0.10.2_1/share/nvim/runtime/lua/vim/lsp/util.lua:485: in function 'apply_text_edits'
	...l/share/nvim/lazy/copilot.lua/lua/copilot/suggestion.lua:489: in function ''
	vim/_editor.lua: in function <vim/_editor.lua:0>

[xebecnan]

I encountered the same error, which in my case appears randomly. It seems that the occurrence of this error is not related to whether I attempt to accept suggestions within or outside of comments.

from example, when I am editing a python file on this line:

df = pd.read_excel(FILE_NAME, sheet_name='中文字符').d

and try to accept the suggestion of "dropna(how='all')" using <M-l> key, and this error occured. However, if I accept by word, things goes well.

update: it seems related to the Chinese character I use in the line. When replace them to English characters, the error disappeared.

btw, I found the offset_encoding argument passed to vim.lsp.util.apply_text_edits() is 'utf-16', but my actual encoding is 'utf-8', not sure is this related to the problem.

[xebecnan]

I changed the encoding from 'utf-16' to 'utf-8' at line 489 in lua/copilot/suggestion.lua, and it seems to work well now. This change likely resolves the issue. I'm not sure if there is a way to get the actual encoding used in the buffer, I will try to investigate this further.

[xebecnan]

This works for me. I'll try to send a pull requset :)

change line 489 of lua/copilot/suggestion.lua from

    vim.lsp.util.apply_text_edits({ { range = range, newText = newText } }, vim.api.nvim_get_current_buf(), "utf-16")

to:

    local encoding = vim.api.nvim_buf_get_option(0, "fileencoding") or 'utf-8'
    vim.lsp.util.apply_text_edits({ { range = range, newText = newText } }, vim.api.nvim_get_current_buf(), encoding)

[xebecnan]

the doc says nvim_buf_get_option is deprecated, so I changed to nvim_get_option_value instead:

    local encoding = vim.api.nvim_get_option_value("fileencoding", {}) or 'utf-8'
    vim.lsp.util.apply_text_edits({ { range = range, newText = newText } }, vim.api.nvim_get_current_buf(), encoding)

[xebecnan]

just found this problem is already solved in #336 >_<

[Syu-fu]

I have encountered a similar problem where an error occurs when the `fileencoding' buffer is empty. This typically happens when opening a new, unsaved file.