--- a/src/fileio.cpp	Fri Mar 16 21:42:11 2007 +0000
+++ b/src/fileio.cpp	Sat Mar 17 11:36:04 2007 +0000
@@ -12,6 +12,7 @@
 #include "debug.h"
 #include "fios.h"
 #ifndef WIN32
+#include <unistd.h>
 #include <sys/stat.h>
 #endif
 
@@ -258,24 +259,98 @@
 	}
 }
 
+#if defined(WIN32) || defined(WINCE)
 /**
  * Determine the base (personal dir and game data dir) paths
- * @note defined in the OS related files (os2.cpp, win32.cpp, unix.cpp etc)
+ * @param exe the path to the executable
  */
-extern void DetermineBasePaths();
+extern void DetermineBasePaths(const char *exe);
+#else /* defined(WIN32) || defined(WINCE) */
+
+/**
+ * Changes the working directory to the path of the give executable.
+ * For OSX application bundles '.app' is the required extension of the bundle,
+ * so when we crop the path to there, when can remove the name of the bundle
+ * in the same way we remove the name from the executable name.
+ * @param exe the path to the executable
+ */
+void ChangeWorkingDirectory(const char *exe)
+{
+#ifdef WITH_COCOA
+	char *app_bundle = strchr(exe, '.');
+	while (app_bundle != NULL && strncasecmp(app_bundle, ".app", 4) != 0) app_bundle = strchr(&app_bundle[1], '.');
+
+	if (app_bundle != NULL) app_bundle[0] = '\0';
+#endif /* WITH_COCOA */
+	char *s = strrchr(exe, PATHSEPCHAR);
+	if (s != NULL) {
+		*s = '\0';
+		chdir(exe);
+		*s = PATHSEPCHAR;
+	}
+#ifdef WITH_COCOA
+	if (app_bundle != NULL) app_bundle[0] = '.';
+#endif /* WITH_COCOA */
+}
+
+/**
+ * Determine the base (personal dir and game data dir) paths
+ * @param exe the path to the executable
+ */
+void DetermineBasePaths(const char *exe)
+{
+	/* Change the working directory to enable doubleclicking in UIs */
+	ChangeWorkingDirectory(exe);
+
+	_paths.game_data_dir = MallocT<char>(MAX_PATH);
+	ttd_strlcpy(_paths.game_data_dir, GAME_DATA_DIR, MAX_PATH);
+#if defined(SECOND_DATA_DIR)
+	_paths.second_data_dir = MallocT<char>(MAX_PATH);
+	ttd_strlcpy(_paths.second_data_dir, SECOND_DATA_DIR, MAX_PATH);
+#endif
+
+#if defined(USE_HOMEDIR)
+	const char *homedir = getenv("HOME");
+
+	if (homedir == NULL) {
+		const struct passwd *pw = getpwuid(getuid());
+		if (pw != NULL) homedir = pw->pw_dir;
+	}
+
+	_paths.personal_dir = str_fmt("%s" PATHSEP "%s", homedir, PERSONAL_DIR);
+#else /* not defined(USE_HOMEDIR) */
+	_paths.personal_dir = MallocT<char>(MAX_PATH);
+	ttd_strlcpy(_paths.personal_dir, PERSONAL_DIR, MAX_PATH);
+
+	/* check if absolute or relative path */
+	const char *s = strchr(_paths.personal_dir, PATHSEPCHAR);
+
+	/* add absolute path */
+	if (s == NULL || _paths.personal_dir != s) {
+		getcwd(_paths.personal_dir, MAX_PATH);
+		AppendPathSeparator(_paths.personal_dir, MAX_PATH);
+		ttd_strlcat(_paths.personal_dir, PERSONAL_DIR, MAX_PATH);
+	}
+#endif /* defined(USE_HOMEDIR) */
+
+	AppendPathSeparator(_paths.personal_dir,  MAX_PATH);
+	AppendPathSeparator(_paths.game_data_dir, MAX_PATH);
+}
+#endif /* defined(WIN32) || defined(WINCE) */
 
 /**
  * Acquire the base paths (personal dir and game data dir),
  * fill all other paths (save dir, autosave dir etc) and
  * make the save and scenario directories.
+ * @param exe the path to the executable
  * @todo for save_dir, autosave_dir, scenario_dir and heightmap_dir the
  *       assumption is that there is no path separator, however for gm_dir
  *       lang_dir and data_dir that assumption is made.
  *       This inconsistency should be resolved.
  */
-void DeterminePaths()
+void DeterminePaths(const char *exe)
 {
-	DetermineBasePaths();
+	DetermineBasePaths(exe);
 
 	_paths.save_dir      = str_fmt("%ssave", _paths.personal_dir);
 	_paths.autosave_dir  = str_fmt("%s" PATHSEP "autosave", _paths.save_dir);

--- a/src/fileio.h	Fri Mar 16 21:42:11 2007 +0000
+++ b/src/fileio.h	Sat Mar 17 11:36:04 2007 +0000
@@ -21,6 +21,6 @@
 void FioCreateDirectory(const char *filename);
 
 void AppendPathSeparator(char *buf, size_t buflen);
-void DeterminePaths();
+void DeterminePaths(const char *exe);
 
 #endif /* FILEIO_H */

--- a/src/openttd.cpp	Fri Mar 16 21:42:11 2007 +0000
+++ b/src/openttd.cpp	Sat Mar 17 11:36:04 2007 +0000
@@ -433,7 +433,7 @@
 		}
 	}
 
-	DeterminePaths();
+	DeterminePaths(argv[0]);
 	CheckExternalFiles();
 
 #if defined(UNIX) && !defined(__MORPHOS__)

--- a/src/os2.cpp	Fri Mar 16 21:42:11 2007 +0000
+++ b/src/os2.cpp	Sat Mar 17 11:36:04 2007 +0000
@@ -122,18 +122,6 @@
 	return ent->d_name[0] == '.';
 }
 
-
-static void ChangeWorkingDirectory(char *exe)
-{
-	char *s = strrchr(exe, PATHSEPCHAR);
-
-	if (s != NULL) {
-		*s = '\0';
-		chdir(exe);
-		*s = PATHSEPCHAR;
-	}
-}
-
 void ShowInfo(const unsigned char *str)
 {
 	HAB hab;
@@ -178,43 +166,6 @@
 	return ttd_main(argc, argv);
 }
 
-void DetermineBasePaths()
-{
-	_paths.game_data_dir = MallocT<char>(MAX_PATH);
-	ttd_strlcpy(_paths.game_data_dir, GAME_DATA_DIR, MAX_PATH);
-#if defined(SECOND_DATA_DIR)
-	_paths.second_data_dir = MallocT<char>(MAX_PATH);
-	ttd_strlcpy(_paths.second_data_dir, SECOND_DATA_DIR, MAX_PATH);
-#endif
-
-#if defined(USE_HOMEDIR)
-	const char *homedir = getenv("HOME");
-
-	if (homedir == NULL) {
-		const struct passwd *pw = getpwuid(getuid());
-		if (pw != NULL) homedir = pw->pw_dir;
-	}
-
-	_paths.personal_dir = str_fmt("%s" PATHSEP "%s", homedir, PERSONAL_DIR);
-#else /* not defined(USE_HOMEDIR) */
-	_paths.personal_dir = MallocT<char>(MAX_PATH);
-	ttd_strlcpy(_paths.personal_dir, PERSONAL_DIR, MAX_PATH);
-
-	/* check if absolute or relative path */
-	const char *s = strchr(_paths.personal_dir, PATHSEPCHAR);
-
-	/* add absolute path */
-	if (s == NULL || _paths.personal_dir != s) {
-		getcwd(_paths.personal_dir, MAX_PATH);
-		AppendPathSeparator(_paths.personal_dir, MAX_PATH);
-		ttd_strlcat(_paths.personal_dir, PERSONAL_DIR, MAX_PATH);
-	}
-#endif /* defined(USE_HOMEDIR) */
-
-	AppendPathSeparator(_paths.personal_dir,  MAX_PATH);
-	AppendPathSeparator(_paths.game_data_dir, MAX_PATH);
-}
-
 /**
  * Insert a chunk of text from the clipboard onto the textbuffer. Get TEXT clipboard
  * and append this up to the maximum length (either absolute or screenlength). If maxlength

--- a/src/unix.cpp	Fri Mar 16 21:42:11 2007 +0000
+++ b/src/unix.cpp	Sat Mar 17 11:36:04 2007 +0000
@@ -7,7 +7,6 @@
 #include "string.h"
 #include "table/strings.h"
 #include "variables.h"
-#include "fileio.h"
 
 #include <dirent.h>
 #include <unistd.h>
@@ -101,18 +100,6 @@
 	return ent->d_name[0] == '.';
 }
 
-#if defined(__BEOS__) || defined(__linux__)
-static void ChangeWorkingDirectory(char *exe)
-{
-	char *s = strrchr(exe, '/');
-	if (s != NULL) {
-		*s = '\0';
-		chdir(exe);
-		*s = '/';
-	}
-}
-#endif
-
 void ShowInfo(const char *str)
 {
 	fprintf(stderr, "%s\n", str);
@@ -131,7 +118,6 @@
 }
 
 #ifdef WITH_COCOA
-void cocoaSetWorkingDirectory();
 void cocoaSetupAutoreleasePool();
 void cocoaReleaseAutoreleasePool();
 #endif
@@ -146,15 +132,9 @@
 	if (argc >= 2 && strncmp(argv[1], "-psn", 4) == 0) {
 		argv[1] = NULL;
 		argc = 1;
-		cocoaSetWorkingDirectory();
 	}
 #endif
 
-	// change the working directory to enable doubleclicking in UIs
-#if defined(__BEOS__) || defined(__linux__)
-	ChangeWorkingDirectory(argv[0]);
-#endif
-
 	_random_seeds[1][1] = _random_seeds[1][0] = _random_seeds[0][1] = _random_seeds[0][0] = time(NULL);
 	SeedMT(_random_seeds[0][1]);
 
@@ -169,43 +149,6 @@
 	return ret;
 }
 
-void DetermineBasePaths()
-{
-	_paths.game_data_dir = MallocT<char>(MAX_PATH);
-	ttd_strlcpy(_paths.game_data_dir, GAME_DATA_DIR, MAX_PATH);
-#if defined(SECOND_DATA_DIR)
-	_paths.second_data_dir = MallocT<char>(MAX_PATH);
-	ttd_strlcpy(_paths.second_data_dir, SECOND_DATA_DIR, MAX_PATH);
-#endif
-
-#if defined(USE_HOMEDIR)
-	const char *homedir = getenv("HOME");
-
-	if (homedir == NULL) {
-		const struct passwd *pw = getpwuid(getuid());
-		if (pw != NULL) homedir = pw->pw_dir;
-	}
-
-	_paths.personal_dir = str_fmt("%s" PATHSEP "%s", homedir, PERSONAL_DIR);
-#else /* not defined(USE_HOMEDIR) */
-	_paths.personal_dir = MallocT<char>(MAX_PATH);
-	ttd_strlcpy(_paths.personal_dir, PERSONAL_DIR, MAX_PATH);
-
-	/* check if absolute or relative path */
-	const char *s = strchr(_paths.personal_dir, PATHSEPCHAR);
-
-	/* add absolute path */
-	if (s == NULL || _paths.personal_dir != s) {
-		getcwd(_paths.personal_dir, MAX_PATH);
-		AppendPathSeparator(_paths.personal_dir, MAX_PATH);
-		ttd_strlcat(_paths.personal_dir, PERSONAL_DIR, MAX_PATH);
-	}
-#endif /* defined(USE_HOMEDIR) */
-
-	AppendPathSeparator(_paths.personal_dir,  MAX_PATH);
-	AppendPathSeparator(_paths.game_data_dir, MAX_PATH);
-}
-
 bool InsertTextBufferClipboard(Textbuf *tb)
 {
 	return false;

--- a/src/video/cocoa_v.mm	Fri Mar 16 21:42:11 2007 +0000
+++ b/src/video/cocoa_v.mm	Sat Mar 17 11:36:04 2007 +0000
@@ -2047,22 +2047,6 @@
 	_cocoa_video_dialog = false;
 }
 
-
-/* This is needed since OS X applications are started with the working dir set to / when double-clicked */
-void cocoaSetWorkingDirectory()
-{
-	char parentdir[MAXPATHLEN];
-	int chdir_ret;
-	CFURLRef url = CFBundleCopyBundleURL(CFBundleGetMainBundle());
-	CFURLRef url2 = CFURLCreateCopyDeletingLastPathComponent(0, url);
-	if (CFURLGetFileSystemRepresentation(url2, true, (unsigned char*)parentdir, MAXPATHLEN)) {
-		chdir_ret = chdir(parentdir); /* chdir to the binary app's parent */
-		assert(chdir_ret == 0);
-	}
-	CFRelease(url);
-	CFRelease(url2);
-}
-
 /* These are called from main() to prevent a _NSAutoreleaseNoPool error when
  * exiting before the cocoa video driver has been loaded
  */

--- a/src/win32.cpp	Fri Mar 16 21:42:11 2007 +0000
+++ b/src/win32.cpp	Sat Mar 17 11:36:04 2007 +0000
@@ -943,7 +943,7 @@
 }
 #endif
 
-void DetermineBasePaths()
+void DetermineBasePaths(const char *exe)
 {
 	_paths.personal_dir = _paths.game_data_dir = MallocT<char>(MAX_PATH);
 #if defined(UNICODE)