addition of '.0' to float representation done by the kernel

lauxlib.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lauxlib.c,v 1.261 2014/04/01 18:55:06 roberto Exp roberto $
+** $Id: lauxlib.c,v 1.262 2014/04/15 18:25:49 roberto Exp roberto $
 ** Auxiliary functions for building Lua libraries
 ** See Copyright Notice in lua.h
 */
@@ -757,13 +757,8 @@ LUALIB_API const char *luaL_tolstring (lua_State *L, int idx, size_t *len) {
       case LUA_TNUMBER: {
         if (lua_isinteger(L, idx))
           lua_pushfstring(L, "%I", lua_tointeger(L, idx));
-        else {
-          const char *s = lua_pushfstring(L, "%f", lua_tonumber(L, idx));
-          if (s[strspn(s, "-0123456789")] == '\0') {  /* looks like an int? */
-            lua_pushliteral(L, ".0");  /* add a '.0' to result */
-            lua_concat(L, 2);
-          }
-        }
+        else
+          lua_pushfstring(L, "%f", lua_tonumber(L, idx));
         break;
       }
       case LUA_TSTRING:

lobject.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lobject.c,v 2.84 2014/05/01 18:18:06 roberto Exp roberto $
+** $Id: lobject.c,v 2.85 2014/05/12 21:22:05 roberto Exp roberto $
 ** Some generic functions over Lua objects
 ** See Copyright Notice in lua.h
 */
@@ -356,14 +356,17 @@ const char *luaO_pushvfstring (lua_State *L, const char *fmt, va_list argp) {
       }
       case 'd': {
         setivalue(L->top++, cast_int(va_arg(argp, int)));
+        luaV_tostring(L, L->top - 1);
         break;
       }
       case 'I': {
         setivalue(L->top++, cast(lua_Integer, va_arg(argp, l_uacInt)));
+        luaV_tostring(L, L->top - 1);
         break;
       }
       case 'f': {
         setfltvalue(L->top++, cast_num(va_arg(argp, l_uacNumber)));
+        luaV_tostring(L, L->top - 1);
         break;
       }
       case 'p': {

lvm.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lvm.c,v 2.207 2014/05/12 19:13:32 roberto Exp roberto $
+** $Id: lvm.c,v 2.208 2014/05/12 21:22:05 roberto Exp roberto $
 ** Lua virtual machine
 ** See Copyright Notice in lua.h
 */
@@ -135,9 +135,16 @@ int luaV_tostring (lua_State *L, StkId obj) {
     return 0;
   else {
     char buff[MAXNUMBER2STR];
-    size_t len = (ttisinteger(obj))
-                 ? lua_integer2str(buff, ivalue(obj))
-                 : lua_number2str(buff, fltvalue(obj));
+    size_t len;
+    if (ttisinteger(obj))
+      len = lua_integer2str(buff, ivalue(obj));
+    else {
+      len = lua_number2str(buff, fltvalue(obj));
+      if (buff[strspn(buff, "-0123456789")] == '\0') {  /* looks like an int? */
+        buff[len++] = '.';
+        buff[len++] = '0';  /* adds '.0' to result */
+      }
+    }
     setsvalue2s(L, obj, luaS_newlstr(L, buff, len));
     return 1;
   }