Add ~user

Cargo.toml

@@ -1,12 +1,12 @@
 [package]
 name = "sush"
-version = "2025.1.0"
+version = "2025.1.6"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-nix = { version = "0.28.0", features = ["fs", "process", "signal", "term"]}
-termion = "3.0.0"
+nix = { version = "0.28.0", features = ["fs", "process", "signal", "term", "user"]}
+termion = "4.0.3"
 unicode-width = "0.1.11"
 signal-hook = "0.3.17"

src/elements/word/tilde_expansion.rs

@@ -3,6 +3,7 @@
 
 use crate::ShellCore;
 use crate::elements::word::Word;
+use nix::unistd::User;
 use super::subword::simple::SimpleSubword;
 
 pub fn eval(word: &mut Word, core: &mut ShellCore) {
@@ -40,8 +41,18 @@ fn get_value(text: &str, core: &mut ShellCore) -> String {
         "" => "HOME",
         "+" => "PWD",
         "-" => "OLDPWD",
-        _ => return "".to_string(),
+        _ => return get_home_dir(text),
     };
 
     core.data.get_param(key).to_string()
 }
+
+fn get_home_dir(user: &str) -> String {
+    match User::from_name(user) {
+        Ok(Some(u)) => u.dir
+                        .into_os_string()
+                        .into_string()
+                        .unwrap(),
+        _ => String::new(),
+    }
+}