Function expand_path 

pub fn expand_path(path: &str) -> PathBuf

Expand a path by resolving ~ and environment variables.

This function expands:

• ~ at the start to the user’s home directory
• $VAR or ${VAR} to the value of the environment variable VAR

Example

use click::utils::expand_path;

let path = expand_path("~/.config/myapp");
// Returns something like "/home/user/.config/myapp"

// With environment variables
std::env::set_var("MY_DIR", "/custom");
let path = expand_path("$MY_DIR/file.txt");
// Returns "/custom/file.txt"