Update 'src/main.rs'

src/main.rs

@@ -158,9 +158,6 @@ fn main() -> Result<(), std::io::Error> {
    let mut set_b = false;
    for arg in args.skip(1) {
       let arg = arg.trim();
-      if atty::is(atty::Stream::Stdin) {
-         return Ok(());
-      }
       if arg.starts_with('-') && !arg.starts_with("--") {
          // It's a single dash option
          for ch in arg.chars().skip(1) {
@@ -241,6 +238,9 @@ fn main() -> Result<(), std::io::Error> {
          return Ok(());
       }
    }
+   if atty::is(atty::Stream::Stdin) {
+      return Ok(());
+   }
    let std_out = std::io::stdout();
    let mut n = 0usize;
    while let Some(Ok(byte)) = std::io::Read::bytes(std::io::stdin()).next() {