fixed import_image not generating in CLI

src/script/functions/image.cpp

@@ -19,6 +19,7 @@
 #include <data/format/formats.hpp>
 #include <gfx/generated_image.hpp>
 #include <render/symbol/filter.hpp>
+#include <cli/text_io_handler.hpp> // for MSE_CLI
 
 void parse_enum(const String&, ImageCombine& out);
 
@@ -45,8 +46,12 @@ SCRIPT_FUNCTION(to_card_image) {
 }
 
 SCRIPT_FUNCTION(import_image) {
+  SCRIPT_PARAM(Set*, set);
   SCRIPT_PARAM(String, path);
-  return make_intrusive<ExternalImage>(path);
+  auto extImg = make_intrusive<ExternalImage>(path);
+  if (cli.haveConsole()) // makes sure generate() is called, but only once, when using the CLI
+    extImg->generate(GeneratedImage::Options(0, 0, set->stylesheet.get(), set));
+  return extImg;
 }
 
 // ----------------------------------------------------------------------------- : Image functions