diff -burN lua-5.2.0/src/llex.c lua-5.2.0-mod/src/llex.c
--- lua-5.2.0/src/llex.c	2011年11月30日 07:43:51 -0500
+++ lua-5.2.0-mod/src/llex.c	2012年01月07日 09:57:11 -0500
@@ -415,6 +415,40 @@
 next(ls); /* skip until end of line (or end of file) */
 break;
 }
+
+ /* bn 01/2012: added C++-style comments */
+#if defined(LUA_CPPCOMT_SHORT) || defined(LUA_CPPCOMT_LONG)
+ case '/': { /* '/' or '/''/' (line comment) or '/''*' (long comment) */
+ next(ls);
+#if defined(LUA_CPPCOMT_SHORT)
+ if (ls->current == '/') {
+ /* line comment */
+ next(ls);
+ while (!currIsNewline(ls) && ls->current != EOZ)
+ next(ls); /* skip until end of line (or end of file) */
+ } else
+#endif /* LUA_CPPCOMT_SHORT */
+#if defined(LUA_CPPCOMT_LONG)
+ if (ls->current == '*') {
+ /* long comment */
+ next(ls);
+ int last = 0;
+ while (ls->current != EOZ) {
+ if (last == '*' && ls->current == '/') break;
+ last = ls->current;
+ next(ls); /* skip until closing marker (or end of file) */
+ }
+ if (ls->current == EOZ)
+ lexerror(ls, "unfinished long comment", TK_EOS);
+ else next(ls);
+ } else
+#endif /* LUA_CPPCOMT_LONG */
+ return '/';
+ break;
+ }
+#endif /* LUA_CPPCOMT_SHORT || LUA_CPPCOMT_LONG */
+ /* end changes */
+
 case '[': { /* long string or simply '[' */
 int sep = skip_sep(ls);
 if (sep>= 0) {
diff -burN lua-5.2.0/src/llex.h lua-5.2.0-mod/src/llex.h
--- lua-5.2.0/src/llex.h	2011年11月30日 07:43:51 -0500
+++ lua-5.2.0-mod/src/llex.h	2012年01月07日 09:57:20 -0500
@@ -15,6 +15,11 @@
 
 
 
+/* bn 01/2012: added C++-style comments */
+#define LUA_CPPCOMT_SHORT
+#define LUA_CPPCOMT_LONG
+/* end changes */
+
 /*
 * WARNING: if you change the order of this enumeration,
 * grep "ORDER RESERVED"
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