Add RTL language property

This doesn't have an effect yet, but it'll do things like
right-alignment in textboxes and other design-flipping.

desktop_version/lang/ca/meta.xml

@@ -26,6 +26,9 @@
     <!-- When automatically uppercasing, allow ~ to be used to stop the next letter from being uppercased (for Irish) -->
     <toupper_lower_escape_char>0</toupper_lower_escape_char>
 
+    <!-- Enable for RTL languages like Arabic or Hebrew -->
+    <rtl>0</rtl>
+
     <!-- The indication that a certain menu option or button is selected -->
     <menu_select>[ {label} ]</menu_select>
     <menu_select_tight>[{label}]</menu_select_tight>

desktop_version/lang/cy/meta.xml

@@ -26,6 +26,9 @@
     <!-- When automatically uppercasing, allow ~ to be used to stop the next letter from being uppercased (for Irish) -->
     <toupper_lower_escape_char>0</toupper_lower_escape_char>
 
+    <!-- Enable for RTL languages like Arabic or Hebrew -->
+    <rtl>0</rtl>
+
     <!-- The indication that a certain menu option or button is selected -->
     <menu_select>[ {label} ]</menu_select>
     <menu_select_tight>[{label}]</menu_select_tight>

desktop_version/lang/de/meta.xml

@@ -26,6 +26,9 @@
     <!-- When automatically uppercasing, allow ~ to be used to stop the next letter from being uppercased (for Irish) -->
     <toupper_lower_escape_char>0</toupper_lower_escape_char>
 
+    <!-- Enable for RTL languages like Arabic or Hebrew -->
+    <rtl>0</rtl>
+
     <!-- The indication that a certain menu option or button is selected -->
     <menu_select>[ {label} ]</menu_select>
     <menu_select_tight>[{label}]</menu_select_tight>

desktop_version/lang/en/meta.xml

@@ -26,6 +26,9 @@
     <!-- When automatically uppercasing, allow ~ to be used to stop the next letter from being uppercased (for Irish) -->
     <toupper_lower_escape_char>0</toupper_lower_escape_char>
 
+    <!-- Enable for RTL languages like Arabic or Hebrew -->
+    <rtl>0</rtl>
+
     <!-- The indication that a certain menu option or button is selected -->
     <menu_select>[ {label} ]</menu_select>
     <menu_select_tight>[{label}]</menu_select_tight>

desktop_version/lang/eo/meta.xml

@@ -26,6 +26,9 @@
     <!-- When automatically uppercasing, allow ~ to be used to stop the next letter from being uppercased (for Irish) -->
     <toupper_lower_escape_char>0</toupper_lower_escape_char>
 
+    <!-- Enable for RTL languages like Arabic or Hebrew -->
+    <rtl>0</rtl>
+
     <!-- The indication that a certain menu option or button is selected -->
     <menu_select>[ {label} ]</menu_select>
     <menu_select_tight>[{label}]</menu_select_tight>

desktop_version/lang/es/meta.xml

@@ -26,6 +26,9 @@
     <!-- When automatically uppercasing, allow ~ to be used to stop the next letter from being uppercased (for Irish) -->
     <toupper_lower_escape_char>0</toupper_lower_escape_char>
 
+    <!-- Enable for RTL languages like Arabic or Hebrew -->
+    <rtl>0</rtl>
+
     <!-- The indication that a certain menu option or button is selected -->
     <menu_select>[ {label} ]</menu_select>
     <menu_select_tight>[{label}]</menu_select_tight>

desktop_version/lang/fr/meta.xml

@@ -26,6 +26,9 @@
     <!-- When automatically uppercasing, allow ~ to be used to stop the next letter from being uppercased (for Irish) -->
     <toupper_lower_escape_char>0</toupper_lower_escape_char>
 
+    <!-- Enable for RTL languages like Arabic or Hebrew -->
+    <rtl>0</rtl>
+
     <!-- The indication that a certain menu option or button is selected -->
     <menu_select>[ {label} ]</menu_select>
     <menu_select_tight>[{label}]</menu_select_tight>

desktop_version/lang/ga/meta.xml

@@ -26,6 +26,9 @@
     <!-- When automatically uppercasing, allow ~ to be used to stop the next letter from being uppercased (for Irish) -->
     <toupper_lower_escape_char>1</toupper_lower_escape_char>
 
+    <!-- Enable for RTL languages like Arabic or Hebrew -->
+    <rtl>0</rtl>
+
     <!-- The indication that a certain menu option or button is selected -->
     <menu_select>[ {label} ]</menu_select>
     <menu_select_tight>[{label}]</menu_select_tight>

desktop_version/lang/it/meta.xml

@@ -26,6 +26,9 @@
     <!-- When automatically uppercasing, allow ~ to be used to stop the next letter from being uppercased (for Irish) -->
     <toupper_lower_escape_char>0</toupper_lower_escape_char>
 
+    <!-- Enable for RTL languages like Arabic or Hebrew -->
+    <rtl>0</rtl>
+
     <!-- The indication that a certain menu option or button is selected -->
     <menu_select>[ {label} ]</menu_select>
     <menu_select_tight>[{label}]</menu_select_tight>

desktop_version/lang/ja/meta.xml

@@ -27,6 +27,9 @@
     <!-- When automatically uppercasing, allow ~ to be used to stop the next letter from being uppercased (for Irish) -->
     <toupper_lower_escape_char>0</toupper_lower_escape_char>
 
+    <!-- Enable for RTL languages like Arabic or Hebrew -->
+    <rtl>0</rtl>
+
     <!-- The indication that a certain menu option or button is selected -->
     <menu_select>[ {label} ]</menu_select>
     <menu_select_tight>[{label}]</menu_select_tight>

desktop_version/lang/ko/meta.xml

@@ -26,6 +26,9 @@
     <!-- When automatically uppercasing, allow ~ to be used to stop the next letter from being uppercased (for Irish) -->
     <toupper_lower_escape_char>0</toupper_lower_escape_char>
 
+    <!-- Enable for RTL languages like Arabic or Hebrew -->
+    <rtl>0</rtl>
+
     <!-- The indication that a certain menu option or button is selected -->
     <menu_select>[ {label} ]</menu_select>
     <menu_select_tight>[{label}]</menu_select_tight>

desktop_version/lang/nl/meta.xml

@@ -26,6 +26,9 @@
     <!-- When automatically uppercasing, allow ~ to be used to stop the next letter from being uppercased (for Irish) -->
     <toupper_lower_escape_char>0</toupper_lower_escape_char>
 
+    <!-- Enable for RTL languages like Arabic or Hebrew -->
+    <rtl>0</rtl>
+
     <!-- The indication that a certain menu option or button is selected -->
     <menu_select>[ {label} ]</menu_select>
     <menu_select_tight>[{label}]</menu_select_tight>

desktop_version/lang/pl/meta.xml

@@ -26,6 +26,9 @@
     <!-- When automatically uppercasing, allow ~ to be used to stop the next letter from being uppercased (for Irish) -->
     <toupper_lower_escape_char>0</toupper_lower_escape_char>
 
+    <!-- Enable for RTL languages like Arabic or Hebrew -->
+    <rtl>0</rtl>
+
     <!-- The indication that a certain menu option or button is selected -->
     <menu_select>[ {label} ]</menu_select>
     <menu_select_tight>[{label}]</menu_select_tight>

desktop_version/lang/pt_BR/meta.xml

@@ -26,6 +26,9 @@
     <!-- When automatically uppercasing, allow ~ to be used to stop the next letter from being uppercased (for Irish) -->
     <toupper_lower_escape_char>0</toupper_lower_escape_char>
 
+    <!-- Enable for RTL languages like Arabic or Hebrew -->
+    <rtl>0</rtl>
+
     <!-- The indication that a certain menu option or button is selected -->
     <menu_select>[ {label} ]</menu_select>
     <menu_select_tight>[{label}]</menu_select_tight>

desktop_version/lang/pt_PT/meta.xml

@@ -26,6 +26,9 @@
     <!-- When automatically uppercasing, allow ~ to be used to stop the next letter from being uppercased (for Irish) -->
     <toupper_lower_escape_char>0</toupper_lower_escape_char>
 
+    <!-- Enable for RTL languages like Arabic or Hebrew -->
+    <rtl>0</rtl>
+
     <!-- The indication that a certain menu option or button is selected -->
     <menu_select>[ {label} ]</menu_select>
     <menu_select_tight>[{label}]</menu_select_tight>

desktop_version/lang/ru/meta.xml

@@ -26,6 +26,9 @@
     <!-- When automatically uppercasing, allow ~ to be used to stop the next letter from being uppercased (for Irish) -->
     <toupper_lower_escape_char>0</toupper_lower_escape_char>
 
+    <!-- Enable for RTL languages like Arabic or Hebrew -->
+    <rtl>0</rtl>
+
     <!-- The indication that a certain menu option or button is selected -->
     <menu_select>[ {label} ]</menu_select>
     <menu_select_tight>[{label}]</menu_select_tight>

desktop_version/lang/szl/meta.xml

@@ -26,6 +26,9 @@
     <!-- When automatically uppercasing, allow ~ to be used to stop the next letter from being uppercased (for Irish) -->
     <toupper_lower_escape_char>0</toupper_lower_escape_char>
 
+    <!-- Enable for RTL languages like Arabic or Hebrew -->
+    <rtl>0</rtl>
+
     <!-- The indication that a certain menu option or button is selected -->
     <menu_select>[ {label} ]</menu_select>
     <menu_select_tight>[{label}]</menu_select_tight>

desktop_version/lang/tr/meta.xml

@@ -26,6 +26,9 @@
     <!-- When automatically uppercasing, allow ~ to be used to stop the next letter from being uppercased (for Irish) -->
     <toupper_lower_escape_char>0</toupper_lower_escape_char>
 
+    <!-- Enable for RTL languages like Arabic or Hebrew -->
+    <rtl>0</rtl>
+
     <!-- The indication that a certain menu option or button is selected -->
     <menu_select>[ {label} ]</menu_select>
     <menu_select_tight>[{label}]</menu_select_tight>

desktop_version/lang/uk/meta.xml

@@ -26,6 +26,9 @@
     <!-- When automatically uppercasing, allow ~ to be used to stop the next letter from being uppercased (for Irish) -->
     <toupper_lower_escape_char>0</toupper_lower_escape_char>
 
+    <!-- Enable for RTL languages like Arabic or Hebrew -->
+    <rtl>0</rtl>
+
     <!-- The indication that a certain menu option or button is selected -->
     <menu_select>[ {label} ]</menu_select>
     <menu_select_tight>[{label}]</menu_select_tight>

desktop_version/lang/zh/meta.xml

@@ -26,6 +26,9 @@
     <!-- When automatically uppercasing, allow ~ to be used to stop the next letter from being uppercased (for Irish) -->
     <toupper_lower_escape_char>0</toupper_lower_escape_char>
 
+    <!-- Enable for RTL languages like Arabic or Hebrew -->
+    <rtl>0</rtl>
+
     <!-- The indication that a certain menu option or button is selected -->
     <menu_select>[ {label} ]</menu_select>
     <menu_select_tight>[{label}]</menu_select_tight>

desktop_version/lang/zh_TW/meta.xml

@@ -26,6 +26,9 @@
     <!-- When automatically uppercasing, allow ~ to be used to stop the next letter from being uppercased (for Irish) -->
     <toupper_lower_escape_char>0</toupper_lower_escape_char>
 
+    <!-- Enable for RTL languages like Arabic or Hebrew -->
+    <rtl>0</rtl>
+
     <!-- The indication that a certain menu option or button is selected -->
     <menu_select>[ {label} ]</menu_select>
     <menu_select_tight>[{label}]</menu_select_tight>

desktop_version/src/Localization.h

@@ -27,6 +27,7 @@ struct LangMeta
     bool toupper; // = true; enable automatic full-caps for menu options
     bool toupper_i_dot; // = false; enable Turkish i mapping when uppercasing
     bool toupper_lower_escape_char; // = false; enable ~ to mark lowercase letters for uppercasing
+    bool rtl; // = false; enable for RTL languages like Arabic or Hebrew
     std::string menu_select;
     std::string menu_select_tight;
     uint8_t font_idx;

desktop_version/src/LocalizationMaint.cpp

@@ -96,6 +96,8 @@ static void sync_lang_file(const std::string& langcode)
                 pElem->SetText((int) langmeta.toupper_i_dot);
             else if (SDL_strcmp(pKey, "toupper_lower_escape_char") == 0)
                 pElem->SetText((int) langmeta.toupper_lower_escape_char);
+            else if (SDL_strcmp(pKey, "rtl") == 0)
+                pElem->SetText((int) langmeta.rtl);
             else if (SDL_strcmp(pKey, "menu_select") == 0)
                 pElem->SetText(langmeta.menu_select.c_str());
             else if (SDL_strcmp(pKey, "menu_select_tight") == 0)

desktop_version/src/LocalizationStorage.cpp

@@ -67,6 +67,7 @@ static void loadmeta(LangMeta& meta, const std::string& langcode = lang)
     meta.toupper = true;
     meta.toupper_i_dot = false;
     meta.toupper_lower_escape_char = false;
+    meta.rtl = false;
     meta.menu_select = "[ {label} ]";
     meta.menu_select_tight = "[{label}]";
     meta.font_idx = font::get_font_idx_8x8();
@@ -107,6 +108,8 @@ static void loadmeta(LangMeta& meta, const std::string& langcode = lang)
             meta.toupper_i_dot = help.Int(pText);
         else if (SDL_strcmp(pKey, "toupper_lower_escape_char") == 0)
             meta.toupper_lower_escape_char = help.Int(pText);
+        else if (SDL_strcmp(pKey, "rtl") == 0)
+            meta.rtl = help.Int(pText);
         else if (SDL_strcmp(pKey, "menu_select") == 0)
             meta.menu_select = std::string(pText);
         else if (SDL_strcmp(pKey, "menu_select_tight") == 0)