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Add support of linenoise (replace readline)

see discussion, http://lua-users.org/lists/lua-l/2010-03/msg00879.html

Signed-off-by: Francois Perrad <francois.perrad@gadz.org>

Index: b/src/lua.c
===================================================================
--- a/src/lua.c
+++ b/src/lua.c
@@ -85,6 +85,15 @@
           add_history(lua_tostring(L, idx));  /* add it to history */
 #define lua_freeline(L,b)	((void)L, free(b))

+#elif defined(LUA_USE_LINENOISE)
+
+#include <linenoise.h>
+#define lua_readline(L,b,p)	((void)L, ((b)=linenoise(p)) != NULL)
+#define lua_saveline(L,idx) \
+	if (lua_rawlen(L,idx) > 0)  /* non-empty line? */ \
+	  linenoiseHistoryAdd(lua_tostring(L, idx));  /* add it to history */
+#define lua_freeline(L,b)	((void)L, free(b))
+
 #else				/* }{ */

 #define lua_readline(L,b,p) \