diff --git a/src/town_cmd.cpp b/src/town_cmd.cpp
--- a/src/town_cmd.cpp
+++ b/src/town_cmd.cpp
@@ -1928,7 +1928,7 @@ static bool IsUniqueTownName(const std::
  * @param text Custom name for the town. If empty, the town name parts will be used.
  * @return the cost of this operation or an error
  */
-CommandCost CmdFoundTown(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
+CommandCost CmdFoundTown(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const std::string &text)
 {
 	TownSize size = Extract<TownSize, 0, 2>(p1);
 	bool city = HasBit(p1, 2);
@@ -1953,7 +1953,7 @@ CommandCost CmdFoundTown(TileIndex tile,
 		return CMD_ERROR;
 	}
 
-	if (StrEmpty(text)) {
+	if (text.empty()) {
 		/* If supplied name is empty, townnameparts has to generate unique automatic name */
 		if (!VerifyTownName(townnameparts, &par)) return_cmd_error(STR_ERROR_NAME_MUST_BE_UNIQUE);
 	} else {
@@ -2003,7 +2003,7 @@ CommandCost CmdFoundTown(TileIndex tile,
 		UpdateNearestTownForRoadTiles(false);
 		old_generating_world.Restore();
 
-		if (t != nullptr && !StrEmpty(text)) {
+		if (t != nullptr && !text.empty()) {
 			t->name = text;
 			t->UpdateVirtCoord();
 		}
@@ -2743,12 +2743,12 @@ void ClearTownHouse(Town *t, TileIndex t
  * @param text the new name or an empty string when resetting to the default
  * @return the cost of this operation or an error
  */
-CommandCost CmdRenameTown(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
+CommandCost CmdRenameTown(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const std::string &text)
 {
 	Town *t = Town::GetIfValid(p1);
 	if (t == nullptr) return CMD_ERROR;
 
-	bool reset = StrEmpty(text);
+	bool reset = text.empty();
 
 	if (!reset) {
 		if (Utf8StringLength(text) >= MAX_LENGTH_TOWN_NAME_CHARS) return CMD_ERROR;
@@ -2796,7 +2796,7 @@ const CargoSpec *FindFirstCargoWithTownE
  * @param text Unused.
  * @return Empty cost or an error.
  */
-CommandCost CmdTownCargoGoal(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
+CommandCost CmdTownCargoGoal(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const std::string &text)
 {
 	if (_current_company != OWNER_DEITY) return CMD_ERROR;
 
@@ -2829,7 +2829,7 @@ CommandCost CmdTownCargoGoal(TileIndex t
  * @param text The new text (empty to remove the text).
  * @return Empty cost or an error.
  */
-CommandCost CmdTownSetText(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
+CommandCost CmdTownSetText(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const std::string &text)
 {
 	if (_current_company != OWNER_DEITY) return CMD_ERROR;
 	Town *t = Town::GetIfValid(p1);
@@ -2837,7 +2837,7 @@ CommandCost CmdTownSetText(TileIndex til
 
 	if (flags & DC_EXEC) {
 		t->text.clear();
-		if (!StrEmpty(text)) t->text = text;
+		if (!text.empty()) t->text = text;
 		InvalidateWindowData(WC_TOWN_VIEW, p1);
 	}
 
@@ -2853,7 +2853,7 @@ CommandCost CmdTownSetText(TileIndex til
  * @param text Unused.
  * @return Empty cost or an error.
  */
-CommandCost CmdTownGrowthRate(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
+CommandCost CmdTownGrowthRate(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const std::string &text)
 {
 	if (_current_company != OWNER_DEITY) return CMD_ERROR;
 	if (GB(p2, 16, 16) != 0) return CMD_ERROR;
@@ -2893,7 +2893,7 @@ CommandCost CmdTownGrowthRate(TileIndex 
  * @param text Unused.
  * @return Empty cost or an error.
  */
-CommandCost CmdTownRating(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
+CommandCost CmdTownRating(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const std::string &text)
 {
 	if (_current_company != OWNER_DEITY) return CMD_ERROR;
 
@@ -2922,7 +2922,7 @@ CommandCost CmdTownRating(TileIndex tile
  * @param text Unused.
  * @return Empty cost or an error.
  */
-CommandCost CmdExpandTown(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
+CommandCost CmdExpandTown(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const std::string &text)
 {
 	if (_game_mode != GM_EDITOR && _current_company != OWNER_DEITY) return CMD_ERROR;
 	Town *t = Town::GetIfValid(p1);
@@ -2962,7 +2962,7 @@ CommandCost CmdExpandTown(TileIndex tile
  * @param text Unused.
  * @return Empty cost or an error.
  */
-CommandCost CmdDeleteTown(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
+CommandCost CmdDeleteTown(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const std::string &text)
 {
 	if (_game_mode != GM_EDITOR && !_generating_world) return CMD_ERROR;
 	Town *t = Town::GetIfValid(p1);
@@ -3351,7 +3351,7 @@ uint GetMaskOfTownActions(int *nump, Com
  * @param text unused
  * @return the cost of this operation or an error
  */
-CommandCost CmdDoTownAction(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
+CommandCost CmdDoTownAction(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const std::string &text)
 {
 	Town *t = Town::GetIfValid(p1);
 	if (t == nullptr || p2 >= lengthof(_town_action_proc)) return CMD_ERROR;