Merge pull request #622 from himikof/fix-env

Fix `env -` option handling case

src/env/env.rs

@@ -116,7 +116,7 @@ pub fn uumain(args: Vec<String>) -> i32 {
                 }
             }
         } else if opt.starts_with("-") {
-            if opt.len() == 0 {
+            if opt.len() == 1 {
                 // implies -i and stop parsing opts
                 wait_cmd = true;
                 opts.ignore_env = true;

test/env.rs

@@ -35,6 +35,14 @@ fn test_ignore_environment() {
 
     let out = str::from_utf8(&po.stdout[..]).unwrap();
     assert_eq!(out, "");
+
+    let po = Command::new(PROGNAME)
+        .arg("-")
+        .output()
+        .unwrap_or_else(|err| panic!("{}", err));
+
+    let out = str::from_utf8(&po.stdout[..]).unwrap();
+    assert_eq!(out, "");
 }
 
 #[test]