From 6fb0b1135090b1e4543438c56ae3e444abb5477d Mon Sep 17 00:00:00 2001
From: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Tue, 4 Jun 2013 16:36:42 -0300
Subject: string contatenation handles conversion of integers to strings +
 floats always format as floats (with decimal dot or exponent)

---
 lauxlib.c | 15 +++++----------
 1 file changed, 5 insertions(+), 10 deletions(-)

(limited to 'lauxlib.c')

diff --git a/lauxlib.c b/lauxlib.c
index c2620357..db46e167 100644
--- a/lauxlib.c
+++ b/lauxlib.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lauxlib.c,v 1.248 2013/03/21 13:54:57 roberto Exp roberto $
+** $Id: lauxlib.c,v 1.249 2013/04/25 13:53:13 roberto Exp roberto $
 ** Auxiliary functions for building Lua libraries
 ** See Copyright Notice in lua.h
 */
@@ -737,15 +737,10 @@ LUALIB_API int luaL_len (lua_State *L, int idx) {
 LUALIB_API const char *luaL_tolstring (lua_State *L, int idx, size_t *len) {
   if (!luaL_callmeta(L, idx, "__tostring")) {  /* no metafield? */
     switch (lua_type(L, idx)) {
-      case LUA_TNUMBER: {
-        if (lua_isinteger(L, idx)) {
-          lua_Integer n = lua_tointeger(L, idx);
-          lua_pushfstring(L, "%I", n);
-        }
-        else {
-          lua_Number n = lua_tonumber(L, idx);
-          lua_pushfstring(L, "%f", n);
-        }
+      case LUA_TNUMBER: {  /* concatenate with empty string to convert */
+        lua_pushvalue(L, idx);
+        lua_pushliteral(L, "");
+        lua_concat(L, 2);
         break;
       }
       case LUA_TSTRING:
-- 
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