fix sixel

Author: o2sh

image/src/lib.rs

@@ -21,12 +21,12 @@ pub trait ImageBackend {
 
 pub fn get_best_backend() -> Option<Box<dyn ImageBackend>> {
     #[cfg(not(windows))]
-    if kitty::KittyBackend::supported() {
+    if sixel::SixelBackend::supported() {
+        Some(Box::new(sixel::SixelBackend::new()))
+    } else if kitty::KittyBackend::supported() {
         Some(Box::new(kitty::KittyBackend::new()))
     } else if iterm::ITermBackend::supported() {
         Some(Box::new(iterm::ITermBackend::new()))
-    } else if sixel::SixelBackend::supported() {
-        Some(Box::new(sixel::SixelBackend::new()))
     } else {
         None
     }

image/src/sixel.rs

@@ -160,7 +160,7 @@ impl super::ImageBackend for SixelBackend {
         }
         image_data.extend(b"\x1B\\");
 
-        image_data.extend(format!("\x1B[{}A", image_rows as u32).as_bytes()); // move cursor to top-left corner
+        image_data.extend(format!("\x1B[{}A", image_rows as u32 - 1).as_bytes()); // move cursor to top-left corner
         image_data.extend(format!("\x1B[{}C", image_columns as u32 + 1).as_bytes()); // move cursor to top-right corner of image
         let mut i = 0;
         for line in &lines {