​

src/term/sixel.rs

@@ -44,12 +44,13 @@ impl<T: AsRef<[u8]>, const N: usize> Sixel<T, N> {
         let q = {
             extern crate libc;
             // SAFETY: is stdout a tty
-            (unsafe { libc::isatty(0) } == 1)
+            (unsafe { libc::isatty(1) } == 1)
         };
         #[cfg(not(unix))]
         let q = true;
         let colors = q
-            .then_some(super::query("[?1;1;0S").and_then(|x| {
+            .then(|| {
+                super::query("[?1;1;0S").and_then(|x| {
                     // [?1;0;65536S
                     if let [b'?', b'1', b';', b'0', b';', n @ ..] = x.as_bytes() {
                         Some(
@@ -65,7 +66,8 @@ impl<T: AsRef<[u8]>, const N: usize> Sixel<T, N> {
                     } else {
                         None
                     }
-            }))
+                })
+            })
             .flatten()
             .unwrap_or(255);
         to.write_str("Pq")?;
@@ -104,13 +106,10 @@ impl<T: AsRef<[u8]>, const N: usize> Sixel<T, N> {
             write!(to, "#{i};2;{r};{g};{b}")?;
         }
         for sixel_row in pixels.chunks_exact(self.width() as usize * 6).map(|x| {
-            let mut x = x
-                .iter()
+            x.iter()
                 .zip(0u32..)
                 .map(|(&p, j)| (p, (j % self.width(), j / self.width())))
-                .collect::<Vec<_>>();
-            x.sort_unstable();
-            x
+                .collect::<Vec<_>>()
         }) {
             // extracted
             for samples in Grouped(&sixel_row, |r| r.0) {