Klaus Halfmann has proposed merging 
lp:~widelands-dev/widelands/bug-1395278-scripting into lp:widelands.

Requested reviews:
  Widelands Developers (widelands-dev)

For more details, see:
https://code.launchpad.net/~widelands-dev/widelands/bug-1395278-scripting/+merge/285909

* Switch from m_<name> to <name>_ mostly in scripting
* Fixed a doc warning for clang in songset.h

I expanded some variables to more expressive names
like m_plr -> player_number_

As lua uses m_ for functions as well the code
should be more readable as well.
-- 
Your team Widelands Developers is requested to review the proposed merge of 
lp:~widelands-dev/widelands/bug-1395278-scripting into lp:widelands.
=== modified file 'src/scripting/logic.cc'
--- src/scripting/logic.cc	2015-01-31 16:03:59 +0000
+++ src/scripting/logic.cc	2016-02-12 17:03:35 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2006-2015 by the Widelands Development Team
+ * Copyright (C) 2006-2016 by the Widelands Development Team
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -63,22 +63,22 @@
 }  // namespace
 
 LuaEditorInterface::LuaEditorInterface(Widelands::EditorGameBase* g)
-	: m_factory(new EditorFactory())
+	: factory_(new EditorFactory())
 {
-	setup_for_editor_and_game(m_L, g);
-	LuaRoot::luaopen_wlroot(m_L, true);
-	LuaEditor::luaopen_wleditor(m_L);
+	setup_for_editor_and_game(lua_state_, g);
+	LuaRoot::luaopen_wlroot(lua_state_, true);
+	LuaEditor::luaopen_wleditor(lua_state_);
 
 	// Push the factory class into the registry
-	lua_pushlightuserdata(m_L, reinterpret_cast<void*>(dynamic_cast<Factory*>(m_factory.get())));
-	lua_setfield(m_L, LUA_REGISTRYINDEX, "factory");
+	lua_pushlightuserdata(lua_state_, reinterpret_cast<void*>(dynamic_cast<Factory*>(factory_.get())));
+	lua_setfield(lua_state_, LUA_REGISTRYINDEX, "factory");
 }
 
 LuaEditorInterface::~LuaEditorInterface() {
 }
 
 std::unique_ptr<LuaTable> LuaEditorInterface::run_script(const std::string& script) {
-	return run_script_maybe_from_map(m_L, script);
+	return run_script_maybe_from_map(lua_state_, script);
 }
 
 // Special handling of math.random.
@@ -125,27 +125,27 @@
 }
 
 LuaGameInterface::LuaGameInterface(Widelands::Game * g)
-	: m_factory(new GameFactory())
+	: factory_(new GameFactory())
 {
-	setup_for_editor_and_game(m_L, g);
+	setup_for_editor_and_game(lua_state_, g);
 
 	// Overwrite math.random
-	lua_getglobal(m_L, "math");
-	lua_pushcfunction(m_L, L_math_random);
-	lua_setfield(m_L, -2, "random");
-	lua_pop(m_L, 1); // pop "math"
+	lua_getglobal(lua_state_, "math");
+	lua_pushcfunction(lua_state_, L_math_random);
+	lua_setfield(lua_state_, -2, "random");
+	lua_pop(lua_state_, 1); // pop "math"
 
-	LuaRoot::luaopen_wlroot(m_L, false);
-	LuaGame::luaopen_wlgame(m_L);
+	LuaRoot::luaopen_wlroot(lua_state_, false);
+	LuaGame::luaopen_wlgame(lua_state_);
 
 	// Push the game into the registry
-	lua_pushlightuserdata(m_L, static_cast<void *>(g));
-	lua_setfield(m_L, LUA_REGISTRYINDEX, "game");
+	lua_pushlightuserdata(lua_state_, static_cast<void *>(g));
+	lua_setfield(lua_state_, LUA_REGISTRYINDEX, "game");
 
 	// Push the factory class into the registry
 	lua_pushlightuserdata
-		(m_L, reinterpret_cast<void *>(dynamic_cast<Factory *>(m_factory.get())));
-	lua_setfield(m_L, LUA_REGISTRYINDEX, "factory");
+		(lua_state_, reinterpret_cast<void *>(dynamic_cast<Factory *>(factory_.get())));
+	lua_setfield(lua_state_, LUA_REGISTRYINDEX, "factory");
 }
 
 LuaGameInterface::~LuaGameInterface() {
@@ -153,7 +153,7 @@
 
 LuaCoroutine* LuaGameInterface::read_coroutine(FileRead& fr) {
 	LuaCoroutine * rv = new LuaCoroutine(nullptr);
-	rv->read(m_L, fr);
+	rv->read(lua_state_, fr);
 	return rv;
 }
 
@@ -167,77 +167,77 @@
 	 uint32_t size)
 {
 	// Clean out the garbage before loading.
-	lua_gc(m_L, LUA_GCCOLLECT, 0);
+	lua_gc(lua_state_, LUA_GCCOLLECT, 0);
 
-	assert(lua_gettop(m_L) == 0); // S:
-	unpersist_object(m_L, fr, mol, size);
-	assert(lua_gettop(m_L) == 1); // S: unpersisted_object
-	luaL_checktype(m_L, -1, LUA_TTABLE);
+	assert(lua_gettop(lua_state_) == 0); // S:
+	unpersist_object(lua_state_, fr, mol, size);
+	assert(lua_gettop(lua_state_) == 1); // S: unpersisted_object
+	luaL_checktype(lua_state_, -1, LUA_TTABLE);
 
 	// Now, we have to merge all keys from the loaded table
 	// into the global table
-	lua_pushnil(m_L);  // S: table nil
-	while (lua_next(m_L, 1) != 0) {
+	lua_pushnil(lua_state_);  // S: table nil
+	while (lua_next(lua_state_, 1) != 0) {
 		// S: table key value
-		lua_rawgeti(m_L, LUA_REGISTRYINDEX, LUA_RIDX_GLOBALS);  // S: table key value globals_table
-		lua_pushvalue(m_L, -3); // S: table key value globals_table key
-		lua_gettable(m_L, -2);  // S: table key value globals_table value_in_globals
-		if (lua_compare(m_L, -1, -3, LUA_OPEQ)) {
-			lua_pop(m_L, 3); // S: table key
+		lua_rawgeti(lua_state_, LUA_REGISTRYINDEX, LUA_RIDX_GLOBALS);  // S: table key value globals_table
+		lua_pushvalue(lua_state_, -3); // S: table key value globals_table key
+		lua_gettable(lua_state_, -2);  // S: table key value globals_table value_in_globals
+		if (lua_compare(lua_state_, -1, -3, LUA_OPEQ)) {
+			lua_pop(lua_state_, 3); // S: table key
 			continue;
 		} else {
 			// Make this a global value
-			lua_pop(m_L, 1);  // S: table key value globals_table
-			lua_pushvalue(m_L, -3);  // S: table key value globals_table key
-			lua_pushvalue(m_L, -3);  // S: table key value globals_table key value
-			lua_settable(m_L, -3);  // S: table key value globals_table
-			lua_pop(m_L, 2);  // S: table key
+			lua_pop(lua_state_, 1);  // S: table key value globals_table
+			lua_pushvalue(lua_state_, -3);  // S: table key value globals_table key
+			lua_pushvalue(lua_state_, -3);  // S: table key value globals_table key value
+			lua_settable(lua_state_, -3);  // S: table key value globals_table
+			lua_pop(lua_state_, 2);  // S: table key
 		}
 	}
 
-	lua_pop(m_L, 1); // pop the table returned by unpersist_object
+	lua_pop(lua_state_, 1); // pop the table returned by unpersist_object
 
 	// Clean out the garbage before returning.
-	lua_gc(m_L, LUA_GCCOLLECT, 0);
+	lua_gc(lua_state_, LUA_GCCOLLECT, 0);
 }
 
 uint32_t LuaGameInterface::write_global_env
 	(FileWrite & fw, Widelands::MapObjectSaver & mos)
 {
 	// Clean out the garbage before writing.
-	lua_gc(m_L, LUA_GCCOLLECT, 0);
+	lua_gc(lua_state_, LUA_GCCOLLECT, 0);
 
 	// Empty table + object to persist on the stack Stack
-	lua_newtable(m_L);
-	lua_rawgeti(m_L, LUA_REGISTRYINDEX, LUA_RIDX_GLOBALS);
+	lua_newtable(lua_state_);
+	lua_rawgeti(lua_state_, LUA_REGISTRYINDEX, LUA_RIDX_GLOBALS);
 
-	uint32_t nwritten = persist_object(m_L, fw, mos);
+	uint32_t nwritten = persist_object(lua_state_, fw, mos);
 
 	// Garbage collect once more, so we do not return unnecessary stuff.
-	lua_gc(m_L, LUA_GCCOLLECT, 0);
+	lua_gc(lua_state_, LUA_GCCOLLECT, 0);
 
 	return nwritten;
 }
 
 std::unique_ptr<LuaTable> LuaGameInterface::get_hook(const std::string& name) {
-	lua_getglobal(m_L, "hooks");
-	if (lua_isnil(m_L, -1)) {
-		lua_pop(m_L, 1);
-		return std::unique_ptr<LuaTable>();
-	}
-
-	lua_getfield(m_L, -1, name.c_str());
-	if (lua_isnil(m_L, -1)) {
-		lua_pop(m_L, 2);
-		return std::unique_ptr<LuaTable>();
-	}
-	lua_remove(m_L, -2);
-
-	std::unique_ptr<LuaTable> return_value(new LuaTable(m_L));
-	lua_pop(m_L, 1);
+	lua_getglobal(lua_state_, "hooks");
+	if (lua_isnil(lua_state_, -1)) {
+		lua_pop(lua_state_, 1);
+		return std::unique_ptr<LuaTable>();
+	}
+
+	lua_getfield(lua_state_, -1, name.c_str());
+	if (lua_isnil(lua_state_, -1)) {
+		lua_pop(lua_state_, 2);
+		return std::unique_ptr<LuaTable>();
+	}
+	lua_remove(lua_state_, -2);
+
+	std::unique_ptr<LuaTable> return_value(new LuaTable(lua_state_));
+	lua_pop(lua_state_, 1);
 	return return_value;
 }
 
 std::unique_ptr<LuaTable> LuaGameInterface::run_script(const std::string& script) {
-	return run_script_maybe_from_map(m_L, script);
+	return run_script_maybe_from_map(lua_state_, script);
 }

=== modified file 'src/scripting/logic.h'
--- src/scripting/logic.h	2015-01-31 16:03:59 +0000
+++ src/scripting/logic.h	2016-02-12 17:03:35 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2006-2015 by the Widelands Development Team
+ * Copyright (C) 2006-2016 by the Widelands Development Team
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -37,7 +37,7 @@
 	std::unique_ptr<LuaTable> run_script(const std::string& script) override;
 
 private:
-	std::unique_ptr<EditorFactory> m_factory;
+	std::unique_ptr<EditorFactory> factory_;
 };
 
 class LuaGameInterface : public LuaInterface {
@@ -61,7 +61,7 @@
 		(FileWrite &, Widelands::MapObjectSaver &);
 
 private:
-	std::unique_ptr<GameFactory> m_factory;
+	std::unique_ptr<GameFactory> factory_;
 };
 
 #endif  // end of include guard: WL_SCRIPTING_LOGIC_H

=== modified file 'src/scripting/lua.h'
--- src/scripting/lua.h	2015-01-31 16:03:59 +0000
+++ src/scripting/lua.h	2016-02-12 17:03:35 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2006-2015 by the Widelands Development Team
+ * Copyright (C) 2006-2016 by the Widelands Development Team
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License

=== modified file 'src/scripting/lua_bases.cc'
--- src/scripting/lua_bases.cc	2015-11-28 22:29:26 +0000
+++ src/scripting/lua_bases.cc	2016-02-12 17:03:35 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2006-2010 by the Widelands Development Team
+ * Copyright (C) 2006-2016 by the Widelands Development Team
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -280,10 +280,10 @@
 };
 
 void LuaPlayerBase::__persist(lua_State * L) {
-	PERS_UINT32("player", m_pl);
+	PERS_UINT32("player", player_number_);
 }
 void LuaPlayerBase::__unpersist(lua_State * L) {
-	UNPERS_UINT32("player", m_pl);
+	UNPERS_UINT32("player", player_number_);
 }
 
 /*
@@ -297,7 +297,7 @@
 		(RO) The number of this Player.
 */
 int LuaPlayerBase::get_number(lua_State * L) {
-	lua_pushuint32(L, m_pl);
+	lua_pushuint32(L, player_number_);
 	return 1;
 }
 
@@ -578,7 +578,7 @@
 
 	get_egbase(L).conquer_area_no_building
 		(PlayerArea<Area<FCoords> >
-			(m_pl, Area<FCoords>
+			(player_number_, Area<FCoords>
 				((*get_user_class<LuaMaps::LuaField>(L, 2))->fcoords(L), radius))
 	);
 	return 0;
@@ -643,11 +643,11 @@
 Player & LuaPlayerBase::get
 		(lua_State * L, Widelands::EditorGameBase & egbase)
 {
-	if (m_pl > MAX_PLAYERS)
-		report_error(L, "Illegal player number %i",  m_pl);
-	Player * rv = egbase.get_player(m_pl);
+	if (player_number_ > MAX_PLAYERS)
+		report_error(L, "Illegal player number %i",  player_number_);
+	Player * rv = egbase.get_player(player_number_);
 	if (!rv)
-		report_error(L, "Player with the number %i does not exist", m_pl);
+		report_error(L, "Player with the number %i does not exist", player_number_);
 	return *rv;
 }
 

=== modified file 'src/scripting/lua_bases.h'
--- src/scripting/lua_bases.h	2015-04-11 08:58:15 +0000
+++ src/scripting/lua_bases.h	2016-02-12 17:03:35 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2006-2010 by the Widelands Development Team
+ * Copyright (C) 2006-2016 by the Widelands Development Team
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -70,19 +70,19 @@
 
 
 class LuaPlayerBase : public LuaBasesModuleClass {
-	Widelands::PlayerNumber m_pl;
+	Widelands::PlayerNumber player_number_;
 	enum {NONE = -1};
 
 public:
 	LUNA_CLASS_HEAD(LuaPlayerBase);
 
 
-	LuaPlayerBase() : m_pl(NONE) {}
-	LuaPlayerBase (lua_State * L) : m_pl(NONE) {
+	LuaPlayerBase() : player_number_(NONE) {}
+	LuaPlayerBase (lua_State * L) : player_number_(NONE) {
 		report_error(L, "Cannot instantiate a 'PlayerBase' directly!");
 	}
 	LuaPlayerBase(Widelands::PlayerNumber n) {
-		m_pl = n;
+		player_number_ = n;
 	}
 	virtual ~LuaPlayerBase() {}
 
@@ -114,7 +114,7 @@
 	Widelands::Player& get(lua_State* L, Widelands::EditorGameBase&);
 
 protected:
-	inline Widelands::PlayerNumber player_number() {return m_pl;}
+	inline Widelands::PlayerNumber player_number() {return player_number_;}
 };
 
 void luaopen_wlbases(lua_State *);

=== modified file 'src/scripting/lua_coroutine.cc'
--- src/scripting/lua_coroutine.cc	2015-10-18 20:23:10 +0000
+++ src/scripting/lua_coroutine.cc	2016-02-12 17:03:35 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2006-2015 by the Widelands Development Team
+ * Copyright (C) 2006-2016 by the Widelands Development Team
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -60,92 +60,92 @@
 }  // namespace
 
 LuaCoroutine::LuaCoroutine(lua_State * ms)
-	: m_L(ms), m_idx(LUA_REFNIL), m_ninput_args(0), m_nreturn_values(0)
+	: lua_state_(ms), idx_(LUA_REFNIL), ninput_args_(0), nreturn_values_(0)
 {
-	if (m_L) {
-		m_idx = reference_coroutine(m_L);
+	if (lua_state_) {
+		idx_ = reference_coroutine(lua_state_);
 	}
 }
 
 LuaCoroutine::~LuaCoroutine() {
-	unreference_coroutine(m_L, m_idx);
+	unreference_coroutine(lua_state_, idx_);
 }
 
 int LuaCoroutine::get_status() {
-	return lua_status(m_L);
+	return lua_status(lua_state_);
 }
 
 int LuaCoroutine::resume()
 {
-	int rv = lua_resume(m_L, nullptr, m_ninput_args);
-	m_ninput_args = 0;
-	m_nreturn_values = lua_gettop(m_L);
+	int rv = lua_resume(lua_state_, nullptr, ninput_args_);
+	ninput_args_ = 0;
+	nreturn_values_ = lua_gettop(lua_state_);
 
 	if (rv != 0 && rv != YIELDED) {
-		throw LuaError(lua_tostring(m_L, -1));
+		throw LuaError(lua_tostring(lua_state_, -1));
 	}
 
 	return rv;
 }
 
 void LuaCoroutine::push_arg(const Widelands::Player * plr) {
-	to_lua<LuaGame::LuaPlayer>(m_L, new LuaGame::LuaPlayer(plr->player_number()));
-	m_ninput_args++;
+	to_lua<LuaGame::LuaPlayer>(lua_state_, new LuaGame::LuaPlayer(plr->player_number()));
+	ninput_args_++;
 }
 
 void LuaCoroutine::push_arg(const Widelands::Coords & coords) {
-	to_lua<LuaMaps::LuaField>(m_L, new LuaMaps::LuaField(coords));
-	++m_nargs;
-	++m_ninput_args;
+	to_lua<LuaMaps::LuaField>(lua_state_, new LuaMaps::LuaField(coords));
+	++nargs_;
+	++ninput_args_;
 }
 
 void LuaCoroutine::push_arg(const Widelands::BuildingDescr* building_descr) {
 	assert(building_descr != nullptr);
-	to_lua<LuaMaps::LuaBuildingDescription>(m_L, new LuaMaps::LuaBuildingDescription(building_descr));
-	++m_ninput_args;
+	to_lua<LuaMaps::LuaBuildingDescription>(lua_state_, new LuaMaps::LuaBuildingDescription(building_descr));
+	++ninput_args_;
 }
 
 void LuaCoroutine::push_arg(const Widelands::WareDescr* ware_descr) {
 	assert(ware_descr != nullptr);
-	to_lua<LuaMaps::LuaWareDescription>(m_L, new LuaMaps::LuaWareDescription(ware_descr));
-	++m_ninput_args;
+	to_lua<LuaMaps::LuaWareDescription>(lua_state_, new LuaMaps::LuaWareDescription(ware_descr));
+	++ninput_args_;
 }
 
 void LuaCoroutine::push_arg(const Widelands::WorkerDescr* worker_descr) {
 	assert(worker_descr != nullptr);
-	to_lua<LuaMaps::LuaWorkerDescription>(m_L, new LuaMaps::LuaWorkerDescription(worker_descr));
-	++m_ninput_args;
+	to_lua<LuaMaps::LuaWorkerDescription>(lua_state_, new LuaMaps::LuaWorkerDescription(worker_descr));
+	++ninput_args_;
 }
 
 void LuaCoroutine::push_arg(const std::string& string) {
 	assert(!string.empty());
-	lua_pushstring(m_L, string);
-	++m_ninput_args;
+	lua_pushstring(lua_state_, string);
+	++ninput_args_;
 }
 
 std::string LuaCoroutine::pop_string() {
-	if (!m_nreturn_values) {
+	if (!nreturn_values_) {
 		return "";
 	}
-	if (!lua_isstring(m_L, -1)) {
+	if (!lua_isstring(lua_state_, -1)) {
 		throw LuaError("pop_string(), but no string on the stack.");
 	}
-	const std::string return_value = lua_tostring(m_L, -1);
-	lua_pop(m_L, 1);
-	--m_nreturn_values;
+	const std::string return_value = lua_tostring(lua_state_, -1);
+	lua_pop(lua_state_, 1);
+	--nreturn_values_;
 	return return_value;
 }
 
 uint32_t LuaCoroutine::pop_uint32() {
-	if (!m_nreturn_values) {
+	if (!nreturn_values_) {
 		return 0;
 	}
-	if (!lua_isnumber(m_L, -1)) {
+	if (!lua_isnumber(lua_state_, -1)) {
 		throw LuaError("pop_uint32(), but no integer on the stack.");
 	}
-	const uint32_t return_value = luaL_checkuint32(m_L, -1);
-	lua_pop(m_L, 1);
-	--m_nreturn_values;
+	const uint32_t return_value = luaL_checkuint32(lua_state_, -1);
+	lua_pop(lua_state_, 1);
+	--nreturn_values_;
 	return return_value;
 }
 
@@ -153,9 +153,9 @@
 void LuaCoroutine::write(FileWrite& fw) {
 	fw.unsigned_8(kCoroutineDataPacketVersion);
 
-	fw.unsigned_32(m_ninput_args);
-	fw.unsigned_32(m_nreturn_values);
-	fw.unsigned_32(m_idx);
+	fw.unsigned_32(ninput_args_);
+	fw.unsigned_32(nreturn_values_);
+	fw.unsigned_32(idx_);
 }
 
 void LuaCoroutine::read(lua_State* parent, FileRead& fr) {
@@ -164,12 +164,12 @@
 	if (version != kCoroutineDataPacketVersion)
 		throw wexception("Unhandled data packet version: %i\n", version);
 
-	m_ninput_args = fr.unsigned_32();
-	m_nreturn_values = fr.unsigned_32();
-	m_idx = fr.unsigned_32();
+	ninput_args_ = fr.unsigned_32();
+	nreturn_values_ = fr.unsigned_32();
+	idx_ = fr.unsigned_32();
 
 	lua_getglobal(parent, kReferenceTableName);
-	lua_rawgeti(parent, -1, m_idx);
-	m_L = luaL_checkthread(parent, -1);
+	lua_rawgeti(parent, -1, idx_);
+	lua_state_ = luaL_checkthread(parent, -1);
 	lua_pop(parent, 2);
 }

=== modified file 'src/scripting/lua_coroutine.h'
--- src/scripting/lua_coroutine.h	2015-10-17 11:01:14 +0000
+++ src/scripting/lua_coroutine.h	2016-02-12 17:03:35 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2006-2015 by the Widelands Development Team
+ * Copyright (C) 2006-2016 by the Widelands Development Team
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -79,11 +79,11 @@
 	void write(FileWrite&);
 	void read(lua_State*, FileRead&);
 
-	lua_State* m_L;
-	uint32_t m_idx;
-	uint32_t m_nargs;
-	uint32_t m_ninput_args;
-	uint32_t m_nreturn_values;
+	lua_State* lua_state_;
+	uint32_t idx_;
+	uint32_t nargs_;
+	uint32_t ninput_args_;
+	uint32_t nreturn_values_;
 };
 
 #endif  // end of include guard: WL_SCRIPTING_LUA_COROUTINE_H

=== modified file 'src/scripting/lua_game.cc'
--- src/scripting/lua_game.cc	2016-01-28 05:24:34 +0000
+++ src/scripting/lua_game.cc	2016-02-12 17:03:35 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2006-2010 by the Widelands Development Team
+ * Copyright (C) 2006-2016 by the Widelands Development Team
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -958,14 +958,14 @@
 };
 
 LuaObjective::LuaObjective(const Widelands::Objective& o) {
-	m_name = o.name();
+	name_ = o.name();
 }
 
 void LuaObjective::__persist(lua_State * L) {
-	PERS_STRING("name", m_name);
+	PERS_STRING("name", name_);
 }
 void LuaObjective::__unpersist(lua_State * L) {
-	UNPERS_STRING("name", m_name);
+	UNPERS_STRING("name", name_);
 }
 
 
@@ -1075,16 +1075,16 @@
 	Game & g = get_game(L);
 	// The next call checks if the Objective still exists
 	get(L, g);
-	g.map().mutable_objectives()->erase(m_name);
+	g.map().mutable_objectives()->erase(name_);
 	return 0;
 }
 
 int LuaObjective::__eq(lua_State * L) {
 	const Map::Objectives& objectives = get_game(L).map().objectives();
 
-	const Map::Objectives::const_iterator me = objectives.find(m_name);
+	const Map::Objectives::const_iterator me = objectives.find(name_);
 	const Map::Objectives::const_iterator other =
-		objectives.find((*get_user_class<LuaObjective>(L, 2))->m_name);
+		objectives.find((*get_user_class<LuaObjective>(L, 2))->name_);
 
 	lua_pushboolean(L,
 	                (me != objectives.end() && other != objectives.end()) &&
@@ -1099,10 +1099,10 @@
  */
 Objective & LuaObjective::get(lua_State * L, Widelands::Game & g) {
 	Map::Objectives* objectives = g.map().mutable_objectives();
-	Map::Objectives::iterator i = objectives->find(m_name);
+	Map::Objectives::iterator i = objectives->find(name_);
 	if (i == objectives->end()) {
 		report_error
-			(L, "Objective with name '%s' doesn't exist!", m_name.c_str());
+			(L, "Objective with name '%s' doesn't exist!", name_.c_str());
 	}
 	return *i->second;
 }
@@ -1132,19 +1132,19 @@
 };
 
 LuaMessage::LuaMessage(uint8_t plr, MessageId id) {
-	m_plr = plr;
-	m_mid = id;
+	player_number_ = plr;
+	message_id_    = id;
 }
 
 void LuaMessage::__persist(lua_State * L) {
-	PERS_UINT32("player", m_plr);
-	PERS_UINT32("msg_idx", get_mos(L)->message_savers[m_plr - 1][m_mid].value());
+	PERS_UINT32("player", player_number_);
+	PERS_UINT32("msg_idx", get_mos(L)->message_savers[player_number_ - 1][message_id_].value());
 }
 void LuaMessage::__unpersist(lua_State * L) {
-	UNPERS_UINT32("player", m_plr);
+	UNPERS_UINT32("player", player_number_);
 	uint32_t midx = 0;
 	UNPERS_UINT32("msg_idx", midx);
-	m_mid = MessageId(midx);
+	message_id_ = MessageId(midx);
 }
 
 /*
@@ -1220,7 +1220,7 @@
 	else if (s == "archived") status = Message::Status::kArchived;
 	else report_error(L, "Invalid message status <%s>!", s.c_str());
 
-	get_plr(L, get_game(L)).messages().set_message_status(m_mid, status);
+	get_plr(L, get_game(L)).messages().set_message_status(message_id_, status);
 
 	return 0;
 }
@@ -1253,7 +1253,7 @@
  ==========================================================
  */
 int LuaMessage::__eq(lua_State * L) {
-	lua_pushboolean(L, m_mid == (*get_user_class<LuaMessage>(L, 2))->m_mid);
+	lua_pushboolean(L, message_id_ == (*get_user_class<LuaMessage>(L, 2))->message_id_);
 	return 1;
 }
 
@@ -1263,15 +1263,15 @@
  ==========================================================
  */
 Player & LuaMessage::get_plr(lua_State * L, Widelands::Game & game) {
-	if (m_plr > MAX_PLAYERS)
-		report_error(L, "Illegal player number %i",  m_plr);
-	Player * rv = game.get_player(m_plr);
+	if (player_number_ > MAX_PLAYERS)
+		report_error(L, "Illegal player number %i",  player_number_);
+	Player * rv = game.get_player(player_number_);
 	if (!rv)
-		report_error(L, "Player with the number %i does not exist", m_plr);
+		report_error(L, "Player with the number %i does not exist", player_number_);
 	return *rv;
 }
 const Message & LuaMessage::get(lua_State * L, Widelands::Game & game) {
-	const Message * rv = get_plr(L, game).messages()[m_mid];
+	const Message * rv = get_plr(L, game).messages()[message_id_];
 	if (!rv)
 		report_error(L, "This message has been deleted!");
 	return *rv;

=== modified file 'src/scripting/lua_game.h'
--- src/scripting/lua_game.h	2015-12-04 18:27:36 +0000
+++ src/scripting/lua_game.h	2016-02-12 17:03:35 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2006-2010 by the Widelands Development Team
+ * Copyright (C) 2006-2016 by the Widelands Development Team
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -102,7 +102,7 @@
 };
 
 class LuaObjective : public LuaGameModuleClass {
-	std::string m_name;
+	std::string name_;
 
 public:
 	LUNA_CLASS_HEAD(LuaObjective);
@@ -110,7 +110,7 @@
 	virtual ~LuaObjective() {}
 
 	LuaObjective(const Widelands::Objective& n);
-	LuaObjective() : m_name("") {}
+	LuaObjective() : name_("") {}
 	LuaObjective(lua_State * L) {
 		report_error(L, "Cannot instantiate a '%s' directly!", className);
 	}
@@ -144,15 +144,15 @@
 };
 
 class LuaMessage : public LuaGameModuleClass {
-	uint32_t m_plr;
-	Widelands::MessageId m_mid;
+	uint32_t             player_number_; // TODO(Hasi50): in CTor this is uint8_t, well
+	Widelands::MessageId message_id_;
 
 public:
 	LUNA_CLASS_HEAD(LuaMessage);
 	virtual ~LuaMessage() {}
 
 	LuaMessage(uint8_t, Widelands::MessageId);
-	LuaMessage() : m_plr(0), m_mid(0) {}
+	LuaMessage() : player_number_(0), message_id_(0) {}
 	LuaMessage(lua_State * L) {
 		report_error(L, "Cannot instantiate a '%s' directly!", className);
 	}

=== modified file 'src/scripting/lua_interface.cc'
--- src/scripting/lua_interface.cc	2015-03-21 13:18:02 +0000
+++ src/scripting/lua_interface.cc	2016-02-12 17:03:35 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2006-2010, 2013 by the Widelands Development Team
+ * Copyright (C) 2006-2016, 2013 by the Widelands Development Team
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -52,46 +52,46 @@
 
 
 LuaInterface::LuaInterface() {
-	m_L = luaL_newstate();
+	lua_state_ = luaL_newstate();
 
 	// Open the Lua libraries
-	open_lua_library(m_L, "", luaopen_base, false);
-	open_lua_library(m_L, LUA_TABLIBNAME, luaopen_table, true);
-	open_lua_library(m_L, LUA_STRLIBNAME, luaopen_string, true);
-	open_lua_library(m_L, LUA_MATHLIBNAME, luaopen_math, true);
-	open_lua_library(m_L, LUA_DBLIBNAME, luaopen_debug, true);
-	open_lua_library(m_L, LUA_COLIBNAME, luaopen_coroutine, true);
+	open_lua_library(lua_state_, "", luaopen_base, false);
+	open_lua_library(lua_state_, LUA_TABLIBNAME, luaopen_table, true);
+	open_lua_library(lua_state_, LUA_STRLIBNAME, luaopen_string, true);
+	open_lua_library(lua_state_, LUA_MATHLIBNAME, luaopen_math, true);
+	open_lua_library(lua_state_, LUA_DBLIBNAME, luaopen_debug, true);
+	open_lua_library(lua_state_, LUA_COLIBNAME, luaopen_coroutine, true);
 
 	// Push the instance of this class into the registry
 	// MSVC2008 requires that stored and retrieved types are
 	// same, so use LuaInterface* on both sides.
 	lua_pushlightuserdata
-		(m_L, reinterpret_cast<void *>(dynamic_cast<LuaInterface *>(this)));
-	lua_setfield(m_L, LUA_REGISTRYINDEX, "lua_interface");
+		(lua_state_, reinterpret_cast<void *>(dynamic_cast<LuaInterface *>(this)));
+	lua_setfield(lua_state_, LUA_REGISTRYINDEX, "lua_interface");
 
 	// Now our own
-	LuaGlobals::luaopen_globals(m_L);
+	LuaGlobals::luaopen_globals(lua_state_);
 
 	// And helper methods.
-	LuaPath::luaopen_path(m_L);
+	LuaPath::luaopen_path(lua_state_);
 
 	// Also push the "wl" and the "hooks" table.
-	lua_newtable(m_L);
-	lua_setglobal(m_L, "wl");
+	lua_newtable(lua_state_);
+	lua_setglobal(lua_state_, "wl");
 
-	lua_newtable(m_L);
-	lua_setglobal(m_L, "hooks");
+	lua_newtable(lua_state_);
+	lua_setglobal(lua_state_, "hooks");
 }
 
 LuaInterface::~LuaInterface() {
-	lua_close(m_L);
+	lua_close(lua_state_);
 }
 
 void LuaInterface::interpret_string(const std::string& cmd) {
-	int rv = luaL_dostring(m_L, cmd.c_str());
-	check_return_value_for_errors(m_L, rv);
+	int rv = luaL_dostring(lua_state_, cmd.c_str());
+	check_return_value_for_errors(lua_state_, rv);
 }
 
 std::unique_ptr<LuaTable> LuaInterface::run_script(const std::string& path) {
-	return ::run_script(m_L, path, g_fs);
+	return ::run_script(lua_state_, path, g_fs);
 }

=== modified file 'src/scripting/lua_interface.h'
--- src/scripting/lua_interface.h	2015-01-31 16:03:59 +0000
+++ src/scripting/lua_interface.h	2016-02-12 17:03:35 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2006-2010 by the Widelands Development Team
+ * Copyright (C) 2006-2016 by the Widelands Development Team
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -41,7 +41,7 @@
 	virtual std::unique_ptr<LuaTable> run_script(const std::string& script);
 
 protected:
-	lua_State* m_L;
+	lua_State* lua_state_;
 };
 
 #endif  // end of include guard: WL_SCRIPTING_LUA_INTERFACE_H

=== modified file 'src/scripting/lua_map.cc'
--- src/scripting/lua_map.cc	2016-02-11 06:50:56 +0000
+++ src/scripting/lua_map.cc	2016-02-12 17:03:35 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2006-2010, 2013 by the Widelands Development Team
+ * Copyright (C) 2006-2016 by the Widelands Development Team
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -2509,7 +2509,7 @@
 	Game & game = get_game(L);
 
 	uint32_t idx = 0;
-	if (MapObject* obj = m_ptr.get(game))
+	if (MapObject* obj = ptr_.get(game))
 		idx = mos.get_object_file_index(*obj);
 
 	PERS_UINT32("file_index", idx);
@@ -2519,10 +2519,10 @@
 	UNPERS_UINT32("file_index", idx);
 
 	if (!idx)
-		m_ptr = nullptr;
+		ptr_ = nullptr;
 	else {
 		MapObjectLoader& mol = *get_mol(L);
-		m_ptr = &mol.get<MapObject>(idx);
+		ptr_ = &mol.get<MapObject>(idx);
 	}
 }
 
@@ -2679,7 +2679,7 @@
 	return o;
 }
 MapObject* LuaMapObject::m_get_or_zero(EditorGameBase& egbase) {
-	return m_ptr.get(egbase);
+	return ptr_.get(egbase);
 }
 
 /* RST
@@ -4338,11 +4338,11 @@
 
 
 void LuaField::__persist(lua_State * L) {
-	PERS_INT32("x", m_c.x); PERS_INT32("y", m_c.y);
+	PERS_INT32("x", coords_.x); PERS_INT32("y", coords_.y);
 }
 
 void LuaField::__unpersist(lua_State * L) {
-	UNPERS_INT32("x", m_c.x); UNPERS_INT32("y", m_c.y);
+	UNPERS_INT32("x", coords_.x); UNPERS_INT32("y", coords_.y);
 }
 
 /*
@@ -4352,7 +4352,7 @@
  */
 // Hash is used to identify a class in a Set
 int LuaField::get___hash(lua_State * L) {
-	const std::string pushme = (boost::format("%i_%i") % m_c.x % m_c.y).str();
+	const std::string pushme = (boost::format("%i_%i") % coords_.x % coords_.y).str();
 	lua_pushstring(L, pushme.c_str());
 	return 1;
 }
@@ -4362,8 +4362,8 @@
 
 		(RO) The x/y coordinate of this field
 */
-int LuaField::get_x(lua_State * L) {lua_pushuint32(L, m_c.x); return 1;}
-int LuaField::get_y(lua_State * L) {lua_pushuint32(L, m_c.y); return 1;}
+int LuaField::get_x(lua_State * L) {lua_pushuint32(L, coords_.x); return 1;}
+int LuaField::get_y(lua_State * L) {lua_pushuint32(L, coords_.y); return 1;}
 
 /* RST
 	.. attribute:: height
@@ -4430,13 +4430,13 @@
 */
 int LuaField::get_viewpoint_x(lua_State * L) {
 	int32_t px, py;
-	MapviewPixelFunctions::get_save_pix(get_egbase(L).map(), m_c, px, py);
+	MapviewPixelFunctions::get_save_pix(get_egbase(L).map(), coords_, px, py);
 	lua_pushint32(L, px);
 	return 1;
 }
 int LuaField::get_viewpoint_y(lua_State * L) {
 	int32_t px, py;
-	MapviewPixelFunctions::get_save_pix(get_egbase(L).map(), m_c, px, py);
+	MapviewPixelFunctions::get_save_pix(get_egbase(L).map(), coords_, px, py);
 	lua_pushint32(L, py);
 	return 1;
 }
@@ -4524,7 +4524,7 @@
 		to remove an immovable, you can use :func:`wl.map.MapObject.remove`.
 */
 int LuaField::get_immovable(lua_State * L) {
-	BaseImmovable * bi = get_egbase(L).map().get_immovable(m_c);
+	BaseImmovable * bi = get_egbase(L).map().get_immovable(coords_);
 
 	if (!bi)
 		return 0;
@@ -4627,7 +4627,7 @@
 */
 #define GET_X_NEIGHBOUR(X) int LuaField::get_ ##X(lua_State* L) { \
    Coords n; \
-   get_egbase(L).map().get_ ##X(m_c, &n); \
+   get_egbase(L).map().get_ ##X(coords_, &n); \
 	to_lua<LuaField>(L, new LuaField(n.x, n.y)); \
 	return 1; \
 }
@@ -4673,7 +4673,7 @@
 	iterate_players_existing(other_p, map.get_nrplayers(), egbase, plr)
 		claimers.push_back
 			(PlrInfluence(plr->player_number(), plr->military_influence
-					(map.get_index(m_c, map.get_width()))
+					(map.get_index(coords_, map.get_width()))
 			)
 		);
 
@@ -4700,12 +4700,12 @@
  ==========================================================
  */
 int LuaField::__eq(lua_State * L) {
-	lua_pushboolean(L, (*get_user_class<LuaField>(L, -1))->m_c == m_c);
+	lua_pushboolean(L, (*get_user_class<LuaField>(L, -1))->coords_ == coords_);
 	return 1;
 }
 
 int LuaField::__tostring(lua_State * L) {
-	const std::string pushme = (boost::format("Field(%i,%i)") % m_c.x % m_c.y).str();
+	const std::string pushme = (boost::format("Field(%i,%i)") % coords_.x % coords_.y).str();
 	lua_pushstring(L, pushme);
 	return 1;
 }
@@ -4820,7 +4820,7 @@
 	(lua_State * L, uint32_t radius, uint32_t inner_radius)
 {
 	Map & map = get_egbase(L).map();
-	HollowArea<Area<> > har(Area<>(m_c, radius), inner_radius);
+	HollowArea<Area<> > har(Area<>(coords_, radius), inner_radius);
 
 	MapHollowRegion<Area<> > mr(map, har);
 
@@ -4836,7 +4836,7 @@
 }
 
 const Widelands::FCoords LuaField::fcoords(lua_State * L) {
-	return get_egbase(L).map().get_fcoords(m_c);
+	return get_egbase(L).map().get_fcoords(coords_);
 }
 
 
@@ -4864,11 +4864,11 @@
 };
 
 void LuaPlayerSlot::__persist(lua_State * L) {
-	PERS_UINT32("player", m_plr);
+	PERS_UINT32("player", player_number_);
 }
 
 void LuaPlayerSlot::__unpersist(lua_State * L) {
-	UNPERS_UINT32("player", m_plr);
+	UNPERS_UINT32("player", player_number_);
 }
 
 /*
@@ -4882,7 +4882,7 @@
 		(RO) The name of the tribe suggested for this player in this map
 */
 int LuaPlayerSlot::get_tribe_name(lua_State * L) {
-	lua_pushstring(L, get_egbase(L).get_map()->get_scenario_player_tribe(m_plr));
+	lua_pushstring(L, get_egbase(L).get_map()->get_scenario_player_tribe(player_number_));
 	return 1;
 }
 
@@ -4892,7 +4892,7 @@
 		(RO) The name for this player as suggested in this map
 */
 int LuaPlayerSlot::get_name(lua_State * L) {
-	lua_pushstring(L, get_egbase(L).get_map()->get_scenario_player_name(m_plr));
+	lua_pushstring(L, get_egbase(L).get_map()->get_scenario_player_name(player_number_));
 	return 1;
 }
 
@@ -4905,7 +4905,7 @@
 		wherever it want. This field is only centered when the game starts.
 */
 int LuaPlayerSlot::get_starting_field(lua_State * L) {
-	to_lua<LuaField>(L, new LuaField(get_egbase(L).map().get_starting_pos(m_plr)));
+	to_lua<LuaField>(L, new LuaField(get_egbase(L).map().get_starting_pos(player_number_)));
 	return 1;
 }
 

=== modified file 'src/scripting/lua_map.h'
--- src/scripting/lua_map.h	2016-01-22 19:53:32 +0000
+++ src/scripting/lua_map.h	2016-02-12 17:03:35 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2006-2010 by the Widelands Development Team
+ * Copyright (C) 2006-2016 by the Widelands Development Team
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -522,20 +522,20 @@
 }
 
 class LuaMapObject : public LuaMapModuleClass {
-	Widelands::ObjectPointer m_ptr;
+	Widelands::ObjectPointer ptr_;
 
 public:
 	LUNA_CLASS_HEAD(LuaMapObject);
 
-	LuaMapObject() : m_ptr(nullptr) {}
+	LuaMapObject() : ptr_(nullptr) {}
 	LuaMapObject(Widelands::MapObject & mo) {
-		m_ptr = &mo;
+		ptr_ = &mo;
 	}
-	LuaMapObject(lua_State * L) : m_ptr(nullptr) {
+	LuaMapObject(lua_State * L) : ptr_(nullptr) {
 		report_error(L, "Cannot instantiate a '%s' directly!", className);
 	}
 	virtual ~LuaMapObject() {
-		m_ptr = nullptr;
+		ptr_ = nullptr;
 	}
 
 	void __persist(lua_State * L) override;
@@ -992,14 +992,14 @@
 #undef CASTED_GET
 
 class LuaField : public LuaMapModuleClass {
-	Widelands::Coords m_c;
+	Widelands::Coords coords_;
 public:
 	LUNA_CLASS_HEAD(LuaField);
 
 	LuaField() {}
 	LuaField (int16_t x, int16_t y) :
-		m_c(Widelands::Coords(x, y)) {}
-	LuaField (Widelands::Coords c) : m_c(c) {}
+		coords_(Widelands::Coords(x, y)) {}
+	LuaField (Widelands::Coords c) : coords_(c) {}
 	LuaField(lua_State * L) {
 		report_error(L, "Cannot instantiate a 'Field' directly!");
 	}
@@ -1051,7 +1051,7 @@
 	/*
 	 * C methods
 	 */
-	inline const Widelands::Coords & coords() {return m_c;}
+	inline const Widelands::Coords & coords() {return coords_;}
 	const Widelands::FCoords fcoords(lua_State * L);
 
 private:
@@ -1060,14 +1060,14 @@
 };
 
 class LuaPlayerSlot : public LuaMapModuleClass {
-	Widelands::PlayerNumber m_plr;
+	Widelands::PlayerNumber player_number_;
 
 public:
 	LUNA_CLASS_HEAD(LuaPlayerSlot);
 
-	LuaPlayerSlot() : m_plr(0) {}
-	LuaPlayerSlot(Widelands::PlayerNumber plr) : m_plr(plr) {}
-	LuaPlayerSlot(lua_State * L) : m_plr(0) {
+	LuaPlayerSlot() : player_number_(0) {}
+	LuaPlayerSlot(Widelands::PlayerNumber plr) : player_number_(plr) {}
+	LuaPlayerSlot(lua_State * L) : player_number_(0) {
 		report_error(L, "Cannot instantiate a 'PlayerSlot' directly!");
 	}
 	virtual ~LuaPlayerSlot() {}

=== modified file 'src/scripting/lua_ui.cc'
--- src/scripting/lua_ui.cc	2015-08-06 17:14:34 +0000
+++ src/scripting/lua_ui.cc	2016-02-12 17:03:35 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2006-2011 by the Widelands Development Team
+ * Copyright (C) 2006-20116 by the Widelands Development Team
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -122,10 +122,10 @@
 	}
 }
 int LuaPanel::get_buttons(lua_State * L) {
-	assert(m_panel);
+	assert(panel_);
 
 	lua_newtable(L);
-	_put_all_visible_buttons_into_table(L, m_panel);
+	_put_all_visible_buttons_into_table(L, panel_);
 
 	return 1;
 }
@@ -153,10 +153,10 @@
 	}
 }
 int LuaPanel::get_tabs(lua_State * L) {
-	assert(m_panel);
+	assert(panel_);
 
 	lua_newtable(L);
-	_put_all_tabs_into_table(L, m_panel);
+	_put_all_tabs_into_table(L, panel_);
 
 	return 1;
 }
@@ -185,10 +185,10 @@
 	}
 }
 int LuaPanel::get_windows(lua_State * L) {
-	assert(m_panel);
+	assert(panel_);
 
 	lua_newtable(L);
-	_put_all_visible_windows_into_table(L, m_panel);
+	_put_all_visible_windows_into_table(L, panel_);
 
 	return 1;
 }
@@ -199,27 +199,27 @@
 		(RW) The current mouse position relative to this Panels position
 */
 int LuaPanel::get_mouse_position_x(lua_State * L) {
-	assert(m_panel);
-	lua_pushint32(L, m_panel->get_mouse_position().x);
+	assert(panel_);
+	lua_pushint32(L, panel_->get_mouse_position().x);
 	return 1;
 }
 int LuaPanel::set_mouse_position_x(lua_State * L) {
-	assert(m_panel);
-	Point p = m_panel->get_mouse_position();
+	assert(panel_);
+	Point p = panel_->get_mouse_position();
 	p.x = luaL_checkint32(L, -1);
-	m_panel->set_mouse_pos(p);
+	panel_->set_mouse_pos(p);
 	return 1;
 }
 int LuaPanel::get_mouse_position_y(lua_State * L) {
-	assert(m_panel);
-	lua_pushint32(L, m_panel->get_mouse_position().y);
+	assert(panel_);
+	lua_pushint32(L, panel_->get_mouse_position().y);
 	return 1;
 }
 int LuaPanel::set_mouse_position_y(lua_State * L) {
-	assert(m_panel);
-	Point p = m_panel->get_mouse_position();
+	assert(panel_);
+	Point p = panel_->get_mouse_position();
 	p.y = luaL_checkint32(L, -1);
-	m_panel->set_mouse_pos(p);
+	panel_->set_mouse_pos(p);
 	return 1;
 }
 
@@ -229,23 +229,23 @@
 		(RW) The dimensions of this panel in pixels
 */
 int LuaPanel::get_width(lua_State * L) {
-	assert(m_panel);
-	lua_pushint32(L, m_panel->get_w());
+	assert(panel_);
+	lua_pushint32(L, panel_->get_w());
 	return 1;
 }
 int LuaPanel::set_width(lua_State * L) {
-	assert(m_panel);
-	m_panel->set_size(luaL_checkint32(L, -1), m_panel->get_h());
+	assert(panel_);
+	panel_->set_size(luaL_checkint32(L, -1), panel_->get_h());
 	return 1;
 }
 int LuaPanel::get_height(lua_State * L) {
-	assert(m_panel);
-	lua_pushint32(L, m_panel->get_h());
+	assert(panel_);
+	lua_pushint32(L, panel_->get_h());
 	return 1;
 }
 int LuaPanel::set_height(lua_State * L) {
-	assert(m_panel);
-	m_panel->set_size(m_panel->get_w(), luaL_checkint32(L, -1));
+	assert(panel_);
+	panel_->set_size(panel_->get_w(), luaL_checkint32(L, -1));
 	return 1;
 }
 
@@ -256,29 +256,29 @@
 		parent's element inner canvas.
 */
 int LuaPanel::get_position_x(lua_State * L) {
-	assert(m_panel);
-	Point p = m_panel->to_parent(Point(0, 0));
+	assert(panel_);
+	Point p = panel_->to_parent(Point(0, 0));
 
 	lua_pushint32(L, p.x);
 	return 1;
 }
 int LuaPanel::set_position_x(lua_State * L) {
-	assert(m_panel);
-	Point p(luaL_checkint32(L, -1) - m_panel->get_lborder(), m_panel->get_y());
-	m_panel->set_pos(p);
+	assert(panel_);
+	Point p(luaL_checkint32(L, -1) - panel_->get_lborder(), panel_->get_y());
+	panel_->set_pos(p);
 	return 1;
 }
 int LuaPanel::get_position_y(lua_State * L) {
-	assert(m_panel);
-	Point p = m_panel->to_parent(Point(0, 0));
+	assert(panel_);
+	Point p = panel_->to_parent(Point(0, 0));
 
 	lua_pushint32(L, p.y);
 	return 1;
 }
 int LuaPanel::set_position_y(lua_State * L) {
-	assert(m_panel);
-	Point p(m_panel->get_x(), luaL_checkint32(L, -1) - m_panel->get_tborder());
-	m_panel->set_pos(p);
+	assert(panel_);
+	Point p(panel_->get_x(), luaL_checkint32(L, -1) - panel_->get_tborder());
+	panel_->set_pos(p);
 	return 1;
 }
 
@@ -298,12 +298,12 @@
 		:rtype: both are :class:`integers`
 */
 int LuaPanel::get_descendant_position(lua_State * L) {
-	assert(m_panel);
+	assert(panel_);
 
-	UI::Panel * cur = (*get_base_user_class<LuaPanel>(L, 2))->m_panel;
+	UI::Panel * cur = (*get_base_user_class<LuaPanel>(L, 2))->panel_;
 
 	Point cp = Point(0, 0);
-	while (cur && cur != m_panel) {
+	while (cur && cur != panel_) {
 		cp += cur->to_parent(Point(0, 0));
 		cur = cur->get_parent();
 	}
@@ -482,8 +482,8 @@
 		not use it any longer.
 */
 int LuaWindow::close(lua_State * /* L */) {
-	delete m_panel;
-	m_panel = nullptr;
+	delete panel_;
+	panel_ = nullptr;
 	return 0;
 }
 
@@ -526,7 +526,7 @@
 void LuaMapView::__unpersist(lua_State* L)
 {
 	Widelands::Game & game = get_game(L);
-	m_panel = game.get_ibase();
+	panel_ = game.get_ibase();
 }
 
 

=== modified file 'src/scripting/lua_ui.h'
--- src/scripting/lua_ui.h	2015-01-31 16:03:59 +0000
+++ src/scripting/lua_ui.h	2016-02-12 17:03:35 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2006-2010 by the Widelands Development Team
+ * Copyright (C) 2006-2016 by the Widelands Development Team
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -40,14 +40,14 @@
 
 class LuaPanel : public LuaUiModuleClass {
 protected:
-	UI::Panel * m_panel;
+	UI::Panel * panel_;
 
 public:
 	LUNA_CLASS_HEAD(LuaPanel);
 
-	LuaPanel() : m_panel(nullptr) {}
-	LuaPanel(UI::Panel * p) : m_panel(p) {}
-	LuaPanel(lua_State * L) : m_panel(nullptr) {
+	LuaPanel() : panel_(nullptr) {}
+	LuaPanel(UI::Panel * p) : panel_(p) {}
+	LuaPanel(lua_State * L) : panel_(nullptr) {
 		report_error(L, "Cannot instantiate a '%s' directly!", className);
 	}
 	virtual ~LuaPanel() {}
@@ -114,7 +114,7 @@
 	/*
 	 * C Methods
 	 */
-	UI::Button * get() {return static_cast<UI::Button *>(m_panel);}
+	UI::Button * get() {return static_cast<UI::Button *>(panel_);}
 };
 
 class LuaTab : public LuaPanel {
@@ -140,7 +140,7 @@
 	/*
 	 * C Methods
 	 */
-	UI::Tab * get() {return static_cast<UI::Tab *>(m_panel);}
+	UI::Tab * get() {return static_cast<UI::Tab *>(panel_);}
 };
 
 class LuaWindow : public LuaPanel {
@@ -165,7 +165,7 @@
 	/*
 	 * C Methods
 	 */
-	UI::Window * get() {return static_cast<UI::Window *>(m_panel);}
+	UI::Window * get() {return static_cast<UI::Window *>(panel_);}
 };
 
 
@@ -207,7 +207,7 @@
 	/*
 	 * C Methods
 	 */
-	InteractiveBase * get() {return static_cast<InteractiveBase *>(m_panel);}
+	InteractiveBase * get() {return static_cast<InteractiveBase *>(panel_);}
 };
 
 void luaopen_wlui(lua_State *);

=== modified file 'src/scripting/luna.h'
--- src/scripting/luna.h	2015-04-18 11:20:53 +0000
+++ src/scripting/luna.h	2016-02-12 17:03:35 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2006-2010 by the Widelands Development Team
+ * Copyright (C) 2006-2016 by the Widelands Development Team
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License

=== modified file 'src/scripting/luna_impl.h'
--- src/scripting/luna_impl.h	2015-01-31 16:03:59 +0000
+++ src/scripting/luna_impl.h	2016-02-12 17:03:35 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2006-2010 by the Widelands Development Team
+ * Copyright (C) 2006-2016 by the Widelands Development Team
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License

=== modified file 'src/sound/songset.h'
--- src/sound/songset.h	2014-07-05 16:41:51 +0000
+++ src/sound/songset.h	2016-02-12 17:03:35 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2006, 2008 by the Widelands Development Team
+ * Copyright (C) 2006-2016 by the Widelands Development Team
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -35,7 +35,7 @@
  * music, e.g. all songs that might be played while the main menu is being
  * shown. It is possible to access those songs one after another or in
  * random order. The fact that a Songset really contains several different
- * songs is hidden from the outside.\n
+ * songs is hidden from the outside.
  * A songset does not contain the audio data itself, to not use huge amounts of
  * memory. Instead, each song is loaded on request and the data is free()d
  * afterwards

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