Function get_pos 

fn get_pos(mark: &str) -> Result<Pos>

Calls Nvim’s getpos() function for the supplied mark identifier and returns a normalized Pos.

On success, converts the raw 1-based tuple into a 0-based Pos. On failure, emits an error notification via crate::notify::error and wraps the error with additional context using color_eyre::eyre.

Errors

• Calling getpos() fails.
• Deserializing the returned tuple into Pos fails.