Related to SO question: http://stackoverflow.com/questions/15197131/ruby-and-swig-typeerror-cant-convert-nil-into-string

QxtGlobalShortcut_wrap.diff

--- /Users/phi/Temp/QxtGlobalShortcut_wrap.cxx	2013-03-04 10:01:25.000000000 +0100
+++ /Users/phi/Temp/QxtGlobalShortcut_wrap_debug.cxx	2013-03-05 14:15:39.000000000 +0100
@@ -1863,6 +1863,7 @@
   void *argp1 = 0 ;
   int res1 = 0 ;
   QxtGlobalShortcut *result = 0 ;
+  printf("_wrap_new_QxtGlobalShortcut__SWIG_0 ENTERING\n");
   
   if ((argc < 1) || (argc > 1)) {
     rb_raise(rb_eArgError, "wrong # of arguments(%d for 1)",argc); SWIG_fail;
@@ -1874,8 +1875,10 @@
   arg1 = reinterpret_cast< QObject * >(argp1);
   result = (QxtGlobalShortcut *)new QxtGlobalShortcut(arg1);
   DATA_PTR(self) = result;
+  printf("_wrap_new_QxtGlobalShortcut__SWIG_0 LEAVING\n");
   return self;
 fail:
+  printf("_wrap_new_QxtGlobalShortcut__SWIG_0 FAIL\n");
   return Qnil;
 }
 
@@ -1889,6 +1892,7 @@
   void *argp2 = 0 ;
   int res2 = 0 ;
   QxtGlobalShortcut *result = 0 ;
+  printf("_wrap_new_QxtGlobalShortcut__SWIG_1 ENTERING\n");
   
   if ((argc < 2) || (argc > 2)) {
     rb_raise(rb_eArgError, "wrong # of arguments(%d for 2)",argc); SWIG_fail;
@@ -1908,8 +1912,10 @@
   arg2 = reinterpret_cast< QObject * >(argp2);
   result = (QxtGlobalShortcut *)new QxtGlobalShortcut((QKeySequence const &)*arg1,arg2);
   DATA_PTR(self) = result;
+  printf("_wrap_new_QxtGlobalShortcut__SWIG_1 LEAVING\n");
   return self;
 fail:
+  printf("_wrap_new_QxtGlobalShortcut__SWIG_1 FAIL\n");
   return Qnil;
 }
 
@@ -1937,6 +1943,7 @@
   void *argp1 ;
   int res1 = 0 ;
   QxtGlobalShortcut *result = 0 ;
+  printf("_wrap_new_QxtGlobalShortcut__SWIG_2 ENTERING\n");
   
   if ((argc < 1) || (argc > 1)) {
     rb_raise(rb_eArgError, "wrong # of arguments(%d for 1)",argc); SWIG_fail;
@@ -1951,8 +1958,10 @@
   arg1 = reinterpret_cast< QKeySequence * >(argp1);
   result = (QxtGlobalShortcut *)new QxtGlobalShortcut((QKeySequence const &)*arg1);
   DATA_PTR(self) = result;
+  printf("_wrap_new_QxtGlobalShortcut__SWIG_2 LEAVING\n");
   return self;
 fail:
+  printf("_wrap_new_QxtGlobalShortcut__SWIG_2 FAIL\n");
   return Qnil;
 }
 
@@ -1963,6 +1972,7 @@
   int ii;
   
   argc = nargs;
+  printf("_wrap_new_QxtGlobalShortcut ENTERING with %d arguments\n", argc);
   if (argc > 2) SWIG_fail;
   for (ii = 0; (ii < argc); ++ii) {
     argv[ii] = args[ii];
@@ -1970,8 +1980,10 @@
   if (argc == 1) {
     int _v;
     void *vptr = 0;
+    printf("_wrap_new_QxtGlobalShortcut before ptr convert for _wrap_new_QxtGlobalShortcut__SWIG_0 TYPE=%d\n", TYPE(argv[0]));
     int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_QObject, 0);
     _v = SWIG_CheckState(res);
+    printf("_wrap_new_QxtGlobalShortcut about to call _wrap_new_QxtGlobalShortcut__SWIG_0 state=%d\n", _v);
     if (_v) {
       return _wrap_new_QxtGlobalShortcut__SWIG_0(nargs, args, self);
     }
@@ -1979,8 +1991,10 @@
   if (argc == 1) {
     int _v;
     void *vptr = 0;
+    printf("_wrap_new_QxtGlobalShortcut before ptr convert for _wrap_new_QxtGlobalShortcut__SWIG_2 TYPE=%d\n", TYPE(argv[0]));
     int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_QKeySequence, 0);
     _v = SWIG_CheckState(res);
+    printf("_wrap_new_QxtGlobalShortcut about to call _wrap_new_QxtGlobalShortcut__SWIG_2 state=%d\n", _v);
     if (_v) {
       return _wrap_new_QxtGlobalShortcut__SWIG_2(nargs, args, self);
     }
@@ -1988,12 +2002,16 @@
   if (argc == 2) {
     int _v;
     void *vptr = 0;
+    printf("_wrap_new_QxtGlobalShortcut before ptr convert for p1 _wrap_new_QxtGlobalShortcut__SWIG_1 TYPE=%d\n", TYPE(argv[0]));
     int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_QKeySequence, 0);
     _v = SWIG_CheckState(res);
+    printf("_wrap_new_QxtGlobalShortcut about to call _wrap_new_QxtGlobalShortcut__SWIG_1 state_p1=%d\n", _v);
     if (_v) {
       void *vptr = 0;
+      printf("_wrap_new_QxtGlobalShortcut before ptr convert for p2 _wrap_new_QxtGlobalShortcut__SWIG_1 TYPE=%d\n", TYPE(argv[1]));
       int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_QObject, 0);
       _v = SWIG_CheckState(res);
+      printf("_wrap_new_QxtGlobalShortcut about to call _wrap_new_QxtGlobalShortcut__SWIG_1 state_p2=%d\n", _v);
       if (_v) {
         return _wrap_new_QxtGlobalShortcut__SWIG_1(nargs, args, self);
       }