File completion and tilde (home repository)

[gwenn]

To handle file completion like this ls ~userX/.

users = "0.5.1"

if let Some(user) = users::get_user_by_name("userX") {
    let home_dir = user.home_dir();
    // ...
}

[sector-f]

Seems like a good idea.

I should point out that zsh and bash handle this sort of thing differently: Bash's approach is "Try to expand, but leave it unchanged if there's nothing to expand." Zsh, on the other hand, gives an error, e.g. zsh: no such user or named directory: foo. At least, this is the default behavior; I'm unaware if it can be changed (but would not be surprised if it can).