Fix crash traveling to Matataki through the town gate

port/CMakeLists.txt

@@ -71,6 +71,10 @@ add_custom_command(OUTPUT ${PORT_OVERRIDES}
 # of ps2/src: it declares what the port defines in place of code PORT leaves
 # out, and supplies or renames what the unit takes from MWCC alone.
 foreach(unit IN LISTS PS2_SOURCES)
+    set(private_overrides "")
+    if(unit STREQUAL "editloop3.cpp")
+        set(private_overrides --private-variables --private-functions)
+    endif()
     set(copy ${CMAKE_BINARY_DIR}/ps2_src/${unit})
     string(REGEX REPLACE "\\.cpp$" ".hpp" header ${CMAKE_SOURCE_DIR}/port/include/stubs/${unit})
     if(EXISTS ${header})
@@ -81,7 +85,7 @@ foreach(unit IN LISTS PS2_SOURCES)
     endif()
     add_custom_command(OUTPUT ${copy}
         COMMAND ${Python3_EXECUTABLE} ${PORT_OVERRIDE_SCRIPT} strip --overrides ${PORT_OVERRIDES} ${stubs}
-            ${port_override_defines} ${PS2_DIR}/${unit} ${copy}
+            ${private_overrides} ${port_override_defines} ${PS2_DIR}/${unit} ${copy}
         DEPENDS ${PS2_DIR}/${unit} ${PORT_OVERRIDES} ${PORT_OVERRIDE_SOURCES} ${PORT_OVERRIDE_SCRIPT} ${header}
         COMMENT "Removing overridden definitions from ps2/src/${unit}"
         VERBATIM)
@@ -97,6 +101,7 @@ endforeach()
 set(PORT_OVERRIDES_CHECKED ${CMAKE_BINARY_DIR}/port_overrides.checked)
 add_custom_command(OUTPUT ${PORT_OVERRIDES_CHECKED}
     COMMAND ${Python3_EXECUTABLE} ${PORT_OVERRIDE_SCRIPT} check --overrides ${PORT_OVERRIDES}
+        --private-variables --private-functions --private-function-unit editloop3.cpp
         --stubs ${CMAKE_SOURCE_DIR}/port/include/stubs ${port_override_defines} ${PS2_DIR}
         -o ${PORT_OVERRIDES_CHECKED}
     DEPENDS ${PS2_ORIGINALS} ${PORT_OVERRIDES} ${PORT_OVERRIDE_SOURCES} ${PORT_OVERRIDE_SCRIPT}

port/include/stubs/edit.hpp

@@ -0,0 +1,3 @@
+#pragma once
+
+#define EdMenuMode PortOriginalEdMenuMode

port/include/stubs/editloop3.hpp

@@ -1,5 +1,8 @@
 #pragma once
 
+#define menu_mode PortEventMenuMode
+#define _WORLD_MAP PortWorldMapCommand
+
 // The port's EdMoveVillager and EdMoveVillagerSubMap (port/src/editloop3.cpp) call this unit's
 // static EdSetVillagerNextPos, which gets a global forwarder; that also keeps clang from dropping
 // the static as unused.

port/src/world_map_result.cpp

@@ -0,0 +1,46 @@
+#include "common.h"
+
+#include <libvu0.h>
+
+#include "battlemenu.hpp"
+#include "edit.hpp"
+#include "runscript.hpp"
+
+/**
+ * Runs the original town menu handler.
+ */
+int PortOriginalEdMenuMode();
+
+/** The menu requested by the current town event. */
+PORT_OVERRIDE int PortEventMenuMode = ED_MENU_NONE;
+
+namespace {
+
+/** The world-map command's native-width script result destination. */
+RS_STACKDATA *world_map_result = nullptr;
+
+} // namespace
+
+/**
+ * Opens the world map while retaining the script result pointer at native width.
+ */
+PORT_OVERRIDE int PortWorldMapCommand(RS_STACKDATA *stack, int argument_count) {
+    if (stack->type != RS_PTR) {
+        return 0;
+    }
+    world_map_result = stack->p;
+    PortEventMenuMode = ED_MENU_WORLD_MAP;
+    return 1;
+}
+
+/**
+ * Publishes the world-map choice when its menu finishes.
+ */
+int EdMenuMode() {
+    const int done = PortOriginalEdMenuMode();
+    if (done && PortEventMenuMode == ED_MENU_WORLD_MAP && world_map_result != nullptr) {
+        world_map_result->i = MenuMapJumpMode + 1;
+        world_map_result = nullptr;
+    }
+    return done;
+}