Fix: Small order list arrow was wrong direction for RTL text. (#14174)

Add sprite for small left arrow and use for small order list when using an RTL language.

media/baseset/openttd.grf.hash

@@ -1 +1 @@
-019dba4830a64ee4345d3d647633e1da
+ff92f892a34a3b9d7a08e68281a7e9b1

media/baseset/openttd/chars.nfo

@@ -840,3 +840,7 @@
    -1 sprites/chars.png 8bpp 630  400   6  21   0  -2 normal
    -1 sprites/mono.png 8bpp 325  270   7  13   0   0 normal
    -1 sprites/mono.png 8bpp 340  270   7  13   0   0 normal
+
+// U+E29D: Small left arrow
+   -1 * 6   12 01 01 01 9D E2
+   -1 sprites/chars.png 8bpp  10  430   5  5   0   1 normal

src/lang/english.txt

@@ -5888,6 +5888,7 @@ STR_CURRENCY_SHORT_GIGA                                         :{NBSP}bn
 STR_CURRENCY_SHORT_TERA                                         :{NBSP}tn
 
 STR_JUST_CARGO                                                  :{CARGO_LONG}
+STR_JUST_LEFT_ARROW                                             :{LEFT_ARROW}
 STR_JUST_RIGHT_ARROW                                            :{RIGHT_ARROW}
 STR_JUST_CHECKMARK                                              :{CHECKMARK}
 STR_JUST_COMMA                                                  :{COMMA}

src/table/control_codes.h

@@ -171,6 +171,7 @@ enum StringControlCode : uint16_t {
 	 * These are mapped to the original glyphs */
 	SCC_LESS_THAN        = SCC_SPRITE_START + 0x3C,
 	SCC_GREATER_THAN     = SCC_SPRITE_START + 0x3E,
+	SCC_LEFT_ARROW       = SCC_SPRITE_START + 0x9D,
 	SCC_UP_ARROW         = SCC_SPRITE_START + 0xA0,
 	SCC_DOWN_ARROW       = SCC_SPRITE_START + 0xAA,
 	SCC_CHECKMARK        = SCC_SPRITE_START + 0xAC,

src/table/strgen_tables.h

@@ -142,6 +142,7 @@ static const CmdStruct _cmd_structs[] = {
 	{"DOWN_ARROW",        EmitSingleChar, SCC_DOWN_ARROW,         0, std::nullopt, {CmdFlag::DontCount}},
 	{"CHECKMARK",         EmitSingleChar, SCC_CHECKMARK,          0, std::nullopt, {CmdFlag::DontCount}},
 	{"CROSS",             EmitSingleChar, SCC_CROSS,              0, std::nullopt, {CmdFlag::DontCount}},
+	{"LEFT_ARROW",        EmitSingleChar, SCC_LEFT_ARROW,         0, std::nullopt, {CmdFlag::DontCount}},
 	{"RIGHT_ARROW",       EmitSingleChar, SCC_RIGHT_ARROW,        0, std::nullopt, {CmdFlag::DontCount}},
 	{"SMALL_LEFT_ARROW",  EmitSingleChar, SCC_LESS_THAN,          0, std::nullopt, {CmdFlag::DontCount}},
 	{"SMALL_RIGHT_ARROW", EmitSingleChar, SCC_GREATER_THAN,       0, std::nullopt, {CmdFlag::DontCount}},

src/vehicle_gui.cpp

@@ -477,7 +477,7 @@ Dimension BaseVehicleListWindow::GetActionDropdownSize(bool show_autoreplace, bo
 
 void BaseVehicleListWindow::OnInit()
 {
-	this->order_arrow_width = GetStringBoundingBox(STR_JUST_RIGHT_ARROW, FS_SMALL).width;
+	this->order_arrow_width = std::max(GetStringBoundingBox(STR_JUST_LEFT_ARROW, FS_SMALL).width, GetStringBoundingBox(STR_JUST_RIGHT_ARROW, FS_SMALL).width);
 	this->SetCargoFilterArray();
 }
 
@@ -1666,7 +1666,7 @@ static void DrawSmallOrderList(const Vehicle *v, int left, int right, int y, uin
 	VehicleOrderID oid = start;
 
 	do {
-		if (oid == v->cur_real_order_index) DrawString(left, right, y, STR_JUST_RIGHT_ARROW, TC_BLACK, SA_LEFT, false, FS_SMALL);
+		if (oid == v->cur_real_order_index) DrawString(left, right, y, rtl ? STR_JUST_LEFT_ARROW : STR_JUST_RIGHT_ARROW, TC_BLACK, SA_LEFT, false, FS_SMALL);
 
 		if (order->IsType(OT_GOTO_STATION)) {
 			DrawString(left + l_offset, right - r_offset, y, GetString(STR_STATION_NAME, order->GetDestination()), TC_BLACK, SA_LEFT, false, FS_SMALL);