Add configuration for GNOME

.local/bin/screenshot-window

@@ -0,0 +1,36 @@
+#!/bin/sh
+
+# Take a screenshot of the focused window
+# (i.e., what "<Alt>Print" does)
+#
+# The screenshot machinery lives inside `gnome-shell`
+# and cannot be called directly because
+# its D-Bus methods are restricted to trusted callers
+#
+# => We synthesize the key press instead, after a short delay
+#    so that a launcher's keyboard grab (e.g., `rofi`) is released
+
+set -eu
+
+
+[ "${XDG_SESSION_TYPE:-}" = "x11" ] || {
+    echo "X11 only (xdotool)" >&2
+    exit 1
+}
+
+
+# Optional countdown in seconds (e.g., `screenshot-window 3`),
+# defaulting to 0.2
+countdown="${1:-0.2}"
+
+case "$countdown" in
+    ''|.|*[!0-9.]*|*.*.*)
+        echo "Not a number: $countdown" >&2
+        exit 1
+        ;;
+esac
+
+sleep "$countdown"
+
+
+xdotool key alt+Print