fix(iterm): add Konsole as supported

CHANGELOG.md

@@ -1,3 +1,6 @@
+## next
+- Add `Konsole` as a available terminal for iterm2 images
+
 ## 0.10.0
 - Add `icy_sixel` feature that uses a Rust implementation of Sixel
 - Remove `lazy_static` dependency in favor of `std::sync::LazyLock`

src/printer/iterm.rs

@@ -109,6 +109,15 @@ fn check_iterm_support() -> bool {
             return true;
         }
     }
+
+    // Konsole does not have "TERM_PROGRAM" and only has "TERM=xterm-256color", which is too generic
+    // but in exchange, there is the following Konsole-only environment variable with which we can detect it
+    if let Ok(version) = std::env::var("KONSOLE_VERSION") {
+        if !version.is_empty() {
+            return true;
+        }
+    }
+
     false
 }