diff --git a/Parser/Gmsh.tab.cpp b/Parser/Gmsh.tab.cpp
index 2ba868eb83cf50e5f6411649a869760249a255d7..5eae9fc9b2a35d1101db4df30d78c392a041fe7c 100644
--- a/Parser/Gmsh.tab.cpp
+++ b/Parser/Gmsh.tab.cpp
@@ -1,172 +1,171 @@
 
 /*  A Bison parser, made from Gmsh.y
- by  GNU Bison version 1.25
-  */
+    by GNU Bison version 1.28  */
 
 #define YYBISON 1  /* Identify Bison output.  */
 
-#define	tDOUBLE	258
-#define	tSTRING	259
-#define	tBIGSTR	260
-#define	tEND	261
-#define	tAFFECT	262
-#define	tDOTS	263
-#define	tPi	264
-#define	tExp	265
-#define	tLog	266
-#define	tLog10	267
-#define	tSqrt	268
-#define	tSin	269
-#define	tAsin	270
-#define	tCos	271
-#define	tAcos	272
-#define	tTan	273
-#define	tRand	274
-#define	tAtan	275
-#define	tAtan2	276
-#define	tSinh	277
-#define	tCosh	278
-#define	tTanh	279
-#define	tFabs	280
-#define	tFloor	281
-#define	tCeil	282
-#define	tFmod	283
-#define	tModulo	284
-#define	tHypot	285
-#define	tPrintf	286
-#define	tDraw	287
-#define	tSleep	288
-#define	tPoint	289
-#define	tCircle	290
-#define	tEllipsis	291
-#define	tLine	292
-#define	tSurface	293
-#define	tSpline	294
-#define	tVolume	295
-#define	tCharacteristic	296
-#define	tLength	297
-#define	tParametric	298
-#define	tElliptic	299
-#define	tPlane	300
-#define	tRuled	301
-#define	tTransfinite	302
-#define	tComplex	303
-#define	tPhysical	304
-#define	tUsing	305
-#define	tBump	306
-#define	tProgression	307
-#define	tRotate	308
-#define	tTranslate	309
-#define	tSymmetry	310
-#define	tDilate	311
-#define	tExtrude	312
-#define	tDuplicata	313
-#define	tLoop	314
-#define	tInclude	315
-#define	tRecombine	316
-#define	tDelete	317
-#define	tCoherence	318
-#define	tView	319
-#define	tAttractor	320
-#define	tLayers	321
-#define	tScalarTetrahedron	322
-#define	tVectorTetrahedron	323
-#define	tTensorTetrahedron	324
-#define	tScalarTriangle	325
-#define	tVectorTriangle	326
-#define	tTensorTriangle	327
-#define	tScalarLine	328
-#define	tVectorLine	329
-#define	tTensorLine	330
-#define	tScalarPoint	331
-#define	tVectorPoint	332
-#define	tTensorPoint	333
-#define	tBSpline	334
-#define	tNurbs	335
-#define	tOrder	336
-#define	tWith	337
-#define	tBounds	338
-#define	tKnots	339
-#define	tColor	340
-#define	tFor	341
-#define	tEndFor	342
-#define	tScript	343
-#define	tExit	344
-#define	tMerge	345
-#define	tReturn	346
-#define	tCall	347
-#define	tFunction	348
-#define	tB_SPLINE_SURFACE_WITH_KNOTS	349
-#define	tB_SPLINE_CURVE_WITH_KNOTS	350
-#define	tCARTESIAN_POINT	351
-#define	tTRUE	352
-#define	tFALSE	353
-#define	tUNSPECIFIED	354
-#define	tU	355
-#define	tV	356
-#define	tEDGE_CURVE	357
-#define	tVERTEX_POINT	358
-#define	tORIENTED_EDGE	359
-#define	tPLANE	360
-#define	tFACE_OUTER_BOUND	361
-#define	tEDGE_LOOP	362
-#define	tADVANCED_FACE	363
-#define	tVECTOR	364
-#define	tDIRECTION	365
-#define	tAXIS2_PLACEMENT_3D	366
-#define	tISO	367
-#define	tENDISO	368
-#define	tENDSEC	369
-#define	tDATA	370
-#define	tHEADER	371
-#define	tFILE_DESCRIPTION	372
-#define	tFILE_SCHEMA	373
-#define	tFILE_NAME	374
-#define	tMANIFOLD_SOLID_BREP	375
-#define	tCLOSED_SHELL	376
-#define	tADVANCED_BREP_SHAPE_REPRESENTATION	377
-#define	tFACE_BOUND	378
-#define	tCYLINDRICAL_SURFACE	379
-#define	tCONICAL_SURFACE	380
-#define	tCIRCLE	381
-#define	tTRIMMED_CURVE	382
-#define	tGEOMETRIC_SET	383
-#define	tCOMPOSITE_CURVE_SEGMENT	384
-#define	tCONTINUOUS	385
-#define	tCOMPOSITE_CURVE	386
-#define	tTOROIDAL_SURFACE	387
-#define	tPRODUCT_DEFINITION	388
-#define	tPRODUCT_DEFINITION_SHAPE	389
-#define	tSHAPE_DEFINITION_REPRESENTATION	390
-#define	tELLIPSE	391
-#define	tTrimmed	392
-#define	tSolid	393
-#define	tEndSolid	394
-#define	tVertex	395
-#define	tFacet	396
-#define	tNormal	397
-#define	tOuter	398
-#define	tLoopSTL	399
-#define	tEndLoop	400
-#define	tEndFacet	401
-#define	tAND	402
-#define	tOR	403
-#define	tNOTEQUAL	404
-#define	tEQUAL	405
-#define	tAPPROXEQUAL	406
-#define	tAFFECTPLUS	407
-#define	tAFFECTMINUS	408
-#define	tAFFECTTIMES	409
-#define	tAFFECTDIVIDE	410
-#define	tLESSOREQUAL	411
-#define	tGREATEROREQUAL	412
-#define	tCROSSPRODUCT	413
-#define	UNARYPREC	414
-#define	tPLUSPLUS	415
-#define	tMINUSMINUS	416
+#define	tDOUBLE	257
+#define	tSTRING	258
+#define	tBIGSTR	259
+#define	tEND	260
+#define	tAFFECT	261
+#define	tDOTS	262
+#define	tPi	263
+#define	tExp	264
+#define	tLog	265
+#define	tLog10	266
+#define	tSqrt	267
+#define	tSin	268
+#define	tAsin	269
+#define	tCos	270
+#define	tAcos	271
+#define	tTan	272
+#define	tRand	273
+#define	tAtan	274
+#define	tAtan2	275
+#define	tSinh	276
+#define	tCosh	277
+#define	tTanh	278
+#define	tFabs	279
+#define	tFloor	280
+#define	tCeil	281
+#define	tFmod	282
+#define	tModulo	283
+#define	tHypot	284
+#define	tPrintf	285
+#define	tDraw	286
+#define	tSleep	287
+#define	tPoint	288
+#define	tCircle	289
+#define	tEllipsis	290
+#define	tLine	291
+#define	tSurface	292
+#define	tSpline	293
+#define	tVolume	294
+#define	tCharacteristic	295
+#define	tLength	296
+#define	tParametric	297
+#define	tElliptic	298
+#define	tPlane	299
+#define	tRuled	300
+#define	tTransfinite	301
+#define	tComplex	302
+#define	tPhysical	303
+#define	tUsing	304
+#define	tBump	305
+#define	tProgression	306
+#define	tRotate	307
+#define	tTranslate	308
+#define	tSymmetry	309
+#define	tDilate	310
+#define	tExtrude	311
+#define	tDuplicata	312
+#define	tLoop	313
+#define	tInclude	314
+#define	tRecombine	315
+#define	tDelete	316
+#define	tCoherence	317
+#define	tView	318
+#define	tAttractor	319
+#define	tLayers	320
+#define	tScalarTetrahedron	321
+#define	tVectorTetrahedron	322
+#define	tTensorTetrahedron	323
+#define	tScalarTriangle	324
+#define	tVectorTriangle	325
+#define	tTensorTriangle	326
+#define	tScalarLine	327
+#define	tVectorLine	328
+#define	tTensorLine	329
+#define	tScalarPoint	330
+#define	tVectorPoint	331
+#define	tTensorPoint	332
+#define	tBSpline	333
+#define	tNurbs	334
+#define	tOrder	335
+#define	tWith	336
+#define	tBounds	337
+#define	tKnots	338
+#define	tColor	339
+#define	tFor	340
+#define	tEndFor	341
+#define	tScript	342
+#define	tExit	343
+#define	tMerge	344
+#define	tReturn	345
+#define	tCall	346
+#define	tFunction	347
+#define	tB_SPLINE_SURFACE_WITH_KNOTS	348
+#define	tB_SPLINE_CURVE_WITH_KNOTS	349
+#define	tCARTESIAN_POINT	350
+#define	tTRUE	351
+#define	tFALSE	352
+#define	tUNSPECIFIED	353
+#define	tU	354
+#define	tV	355
+#define	tEDGE_CURVE	356
+#define	tVERTEX_POINT	357
+#define	tORIENTED_EDGE	358
+#define	tPLANE	359
+#define	tFACE_OUTER_BOUND	360
+#define	tEDGE_LOOP	361
+#define	tADVANCED_FACE	362
+#define	tVECTOR	363
+#define	tDIRECTION	364
+#define	tAXIS2_PLACEMENT_3D	365
+#define	tISO	366
+#define	tENDISO	367
+#define	tENDSEC	368
+#define	tDATA	369
+#define	tHEADER	370
+#define	tFILE_DESCRIPTION	371
+#define	tFILE_SCHEMA	372
+#define	tFILE_NAME	373
+#define	tMANIFOLD_SOLID_BREP	374
+#define	tCLOSED_SHELL	375
+#define	tADVANCED_BREP_SHAPE_REPRESENTATION	376
+#define	tFACE_BOUND	377
+#define	tCYLINDRICAL_SURFACE	378
+#define	tCONICAL_SURFACE	379
+#define	tCIRCLE	380
+#define	tTRIMMED_CURVE	381
+#define	tGEOMETRIC_SET	382
+#define	tCOMPOSITE_CURVE_SEGMENT	383
+#define	tCONTINUOUS	384
+#define	tCOMPOSITE_CURVE	385
+#define	tTOROIDAL_SURFACE	386
+#define	tPRODUCT_DEFINITION	387
+#define	tPRODUCT_DEFINITION_SHAPE	388
+#define	tSHAPE_DEFINITION_REPRESENTATION	389
+#define	tELLIPSE	390
+#define	tTrimmed	391
+#define	tSolid	392
+#define	tEndSolid	393
+#define	tVertex	394
+#define	tFacet	395
+#define	tNormal	396
+#define	tOuter	397
+#define	tLoopSTL	398
+#define	tEndLoop	399
+#define	tEndFacet	400
+#define	tAND	401
+#define	tOR	402
+#define	tNOTEQUAL	403
+#define	tEQUAL	404
+#define	tAPPROXEQUAL	405
+#define	tAFFECTPLUS	406
+#define	tAFFECTMINUS	407
+#define	tAFFECTTIMES	408
+#define	tAFFECTDIVIDE	409
+#define	tLESSOREQUAL	410
+#define	tGREATEROREQUAL	411
+#define	tCROSSPRODUCT	412
+#define	UNARYPREC	413
+#define	tPLUSPLUS	414
+#define	tMINUSMINUS	415
 
 #line 1 "Gmsh.y"
- /* $Id: Gmsh.tab.cpp,v 1.33 2000-12-08 22:29:50 geuzaine Exp $ */
+ /* $Id: Gmsh.tab.cpp,v 1.34 2000-12-08 22:31:19 geuzaine Exp $ */
 
 #include <stdarg.h>
 
@@ -250,7 +249,7 @@ typedef union {
 #define	YYFLAG		-32768
 #define	YYNTBASE	180
 
-#define YYTRANSLATE(x) ((unsigned)(x) <= 416 ? yytranslate[x] : 258)
+#define YYTRANSLATE(x) ((unsigned)(x) <= 415 ? yytranslate[x] : 258)
 
 static const short yytranslate[] = {     0,
      2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
@@ -278,23 +277,23 @@ static const short yytranslate[] = {     0,
      2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
      2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
      2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
-     2,     2,     2,     2,     2,     1,     2,     3,     4,     5,
-     6,     7,     8,     9,    10,    11,    12,    13,    14,    15,
-    16,    17,    18,    19,    20,    21,    22,    23,    24,    25,
-    26,    27,    28,    29,    30,    31,    32,    33,    34,    35,
-    36,    37,    38,    39,    40,    41,    42,    43,    44,    45,
-    46,    47,    48,    49,    50,    51,    52,    53,    54,    55,
-    56,    57,    58,    59,    60,    61,    62,    63,    64,    65,
-    66,    67,    68,    69,    70,    71,    72,    73,    74,    75,
-    76,    77,    78,    79,    80,    81,    82,    83,    84,    85,
-    86,    87,    88,    89,    90,    91,    92,    93,    94,    95,
-    96,    97,    98,    99,   100,   101,   102,   103,   104,   105,
-   106,   107,   108,   109,   110,   111,   112,   113,   114,   115,
-   116,   117,   118,   119,   120,   121,   122,   123,   124,   125,
-   126,   127,   128,   129,   130,   131,   132,   133,   134,   135,
-   136,   137,   138,   139,   140,   141,   142,   143,   144,   145,
-   146,   148,   149,   150,   151,   152,   153,   154,   155,   156,
-   159,   160,   166,   167,   170,   171
+     2,     2,     2,     2,     2,     1,     3,     4,     5,     6,
+     7,     8,     9,    10,    11,    12,    13,    14,    15,    16,
+    17,    18,    19,    20,    21,    22,    23,    24,    25,    26,
+    27,    28,    29,    30,    31,    32,    33,    34,    35,    36,
+    37,    38,    39,    40,    41,    42,    43,    44,    45,    46,
+    47,    48,    49,    50,    51,    52,    53,    54,    55,    56,
+    57,    58,    59,    60,    61,    62,    63,    64,    65,    66,
+    67,    68,    69,    70,    71,    72,    73,    74,    75,    76,
+    77,    78,    79,    80,    81,    82,    83,    84,    85,    86,
+    87,    88,    89,    90,    91,    92,    93,    94,    95,    96,
+    97,    98,    99,   100,   101,   102,   103,   104,   105,   106,
+   107,   108,   109,   110,   111,   112,   113,   114,   115,   116,
+   117,   118,   119,   120,   121,   122,   123,   124,   125,   126,
+   127,   128,   129,   130,   131,   132,   133,   134,   135,   136,
+   137,   138,   139,   140,   141,   142,   143,   144,   145,   146,
+   148,   149,   150,   151,   152,   153,   154,   155,   156,   159,
+   160,   166,   167,   170,   171
 };
 
 #if YYDEBUG != 0
@@ -2619,7 +2618,8 @@ static const short yycheck[] = {     7,
     -1,   169
 };
 /* -*-C-*-  Note some compilers choke on comments on `#line' lines.  */
-#line 3 "bison.simple"
+#line 3 "/usr/lib/bison.simple"
+/* This file comes from bison-1.28.  */
 
 /* Skeleton output parser for bison,
    Copyright (C) 1984, 1989, 1990 Free Software Foundation, Inc.
@@ -2636,46 +2636,66 @@ static const short yycheck[] = {     7,
 
    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
-   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+   Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
 
 /* As a special exception, when this file is copied by Bison into a
    Bison output file, you may use that output file without restriction.
    This special exception was added by the Free Software Foundation
    in version 1.24 of Bison.  */
 
-#ifndef alloca
+/* This is the parser code that is written into each bison parser
+  when the %semantic_parser declaration is not specified in the grammar.
+  It was written by Richard Stallman by simplifying the hairy parser
+  used when %semantic_parser is specified.  */
+
+#ifndef YYSTACK_USE_ALLOCA
+#ifdef alloca
+#define YYSTACK_USE_ALLOCA
+#else /* alloca not defined */
 #ifdef __GNUC__
+#define YYSTACK_USE_ALLOCA
 #define alloca __builtin_alloca
 #else /* not GNU C.  */
-#if (!defined (__STDC__) && defined (sparc)) || defined (__sparc__) || defined (__sparc) || defined (__sgi)
+#if (!defined (__STDC__) && defined (sparc)) || defined (__sparc__) || defined (__sparc) || defined (__sgi) || (defined (__sun) && defined (__i386))
+#define YYSTACK_USE_ALLOCA
 #include <alloca.h>
 #else /* not sparc */
-#if defined (MSDOS) && !defined (__TURBOC__)
+/* We think this test detects Watcom and Microsoft C.  */
+/* This used to test MSDOS, but that is a bad idea
+   since that symbol is in the user namespace.  */
+#if (defined (_MSDOS) || defined (_MSDOS_)) && !defined (__TURBOC__)
+#if 0 /* No need for malloc.h, which pollutes the namespace;
+	 instead, just don't use alloca.  */
 #include <malloc.h>
+#endif
 #else /* not MSDOS, or __TURBOC__ */
 #if defined(_AIX)
-#include <malloc.h>
+/* I don't know what this was needed for, but it pollutes the namespace.
+   So I turned it off.   rms, 2 May 1997.  */
+/* #include <malloc.h>  */
  #pragma alloca
-#else /* not MSDOS, __TURBOC__, or _AIX */
-#ifdef __hpux
-#ifdef __cplusplus
-extern "C" {
-void *alloca (unsigned int);
-};
-#else /* not __cplusplus */
-void *alloca ();
-#endif /* not __cplusplus */
+#define YYSTACK_USE_ALLOCA
+#else /* not MSDOS, or __TURBOC__, or _AIX */
+#if 0
+#ifdef __hpux /* haible@ilog.fr says this works for HPUX 9.05 and up,
+		 and on HPUX 10.  Eventually we can turn this on.  */
+#define YYSTACK_USE_ALLOCA
+#define alloca __builtin_alloca
 #endif /* __hpux */
+#endif
 #endif /* not _AIX */
 #endif /* not MSDOS, or __TURBOC__ */
-#endif /* not sparc.  */
-#endif /* not GNU C.  */
-#endif /* alloca not defined.  */
+#endif /* not sparc */
+#endif /* not GNU C */
+#endif /* alloca not defined */
+#endif /* YYSTACK_USE_ALLOCA not defined */
 
-/* This is the parser code that is written into each bison parser
-  when the %semantic_parser declaration is not specified in the grammar.
-  It was written by Richard Stallman by simplifying the hairy parser
-  used when %semantic_parser is specified.  */
+#ifdef YYSTACK_USE_ALLOCA
+#define YYSTACK_ALLOC alloca
+#else
+#define YYSTACK_ALLOC malloc
+#endif
 
 /* Note: there must be only one dollar sign in this file.
    It is replaced by the list of actions, each action
@@ -2685,8 +2705,8 @@ void *alloca ();
 #define yyclearin	(yychar = YYEMPTY)
 #define YYEMPTY		-2
 #define YYEOF		0
-#define YYACCEPT	return(0)
-#define YYABORT 	return(1)
+#define YYACCEPT	goto yyacceptlab
+#define YYABORT 	goto yyabortlab
 #define YYERROR		goto yyerrlab1
 /* Like YYERROR except do call yyerror.
    This remains here temporarily to ease the
@@ -2767,12 +2787,12 @@ int yydebug;			/*  nonzero means print parse trace	*/
 #ifndef YYMAXDEPTH
 #define YYMAXDEPTH 10000
 #endif
-
-/* Prevent warning if -Wstrict-prototypes.  */
-#ifdef __GNUC__
-int yyparse (void);
-#endif
 
+/* Define __yy_memcpy.  Note that the size argument
+   should be passed with type unsigned int, because that is what the non-GCC
+   definitions require.  With GCC, __builtin_memcpy takes an arg
+   of type size_t, but it can handle unsigned int.  */
+
 #if __GNUC__ > 1		/* GNU C and GNU C++ define this.  */
 #define __yy_memcpy(TO,FROM,COUNT)	__builtin_memcpy(TO,FROM,COUNT)
 #else				/* not GNU C or C++ */
@@ -2784,7 +2804,7 @@ static void
 __yy_memcpy (to, from, count)
      char *to;
      char *from;
-     int count;
+     unsigned int count;
 {
   register char *f = from;
   register char *t = to;
@@ -2799,10 +2819,10 @@ __yy_memcpy (to, from, count)
 /* This is the most reliable way to avoid incompatibilities
    in available built-in functions on various systems.  */
 static void
-__yy_memcpy (char *to, char *from, int count)
+__yy_memcpy (char *to, char *from, unsigned int count)
 {
-  register char *f = from;
   register char *t = to;
+  register char *f = from;
   register int i = count;
 
   while (i-- > 0)
@@ -2812,7 +2832,7 @@ __yy_memcpy (char *to, char *from, int count)
 #endif
 #endif
 
-#line 196 "bison.simple"
+#line 217 "/usr/lib/bison.simple"
 
 /* The user can define YYPARSE_PARAM as the name of an argument to be passed
    into yyparse.  The argument should have type void *.
@@ -2833,6 +2853,15 @@ __yy_memcpy (char *to, char *from, int count)
 #define YYPARSE_PARAM_DECL
 #endif /* not YYPARSE_PARAM */
 
+/* Prevent warning if -Wstrict-prototypes.  */
+#ifdef __GNUC__
+#ifdef YYPARSE_PARAM
+int yyparse (void *);
+#else
+int yyparse (void);
+#endif
+#endif
+
 int
 yyparse(YYPARSE_PARAM_ARG)
      YYPARSE_PARAM_DECL
@@ -2861,6 +2890,7 @@ yyparse(YYPARSE_PARAM_ARG)
 #endif
 
   int yystacksize = YYINITDEPTH;
+  int yyfree_stacks = 0;
 
 #ifdef YYPURE
   int yychar;
@@ -2945,18 +2975,32 @@ yynewstate:
       if (yystacksize >= YYMAXDEPTH)
 	{
 	  yyerror("parser stack overflow");
+	  if (yyfree_stacks)
+	    {
+	      free (yyss);
+	      free (yyvs);
+#ifdef YYLSP_NEEDED
+	      free (yyls);
+#endif
+	    }
 	  return 2;
 	}
       yystacksize *= 2;
       if (yystacksize > YYMAXDEPTH)
 	yystacksize = YYMAXDEPTH;
-      yyss = (short *) alloca (yystacksize * sizeof (*yyssp));
-      __yy_memcpy ((char *)yyss, (char *)yyss1, size * sizeof (*yyssp));
-      yyvs = (YYSTYPE *) alloca (yystacksize * sizeof (*yyvsp));
-      __yy_memcpy ((char *)yyvs, (char *)yyvs1, size * sizeof (*yyvsp));
+#ifndef YYSTACK_USE_ALLOCA
+      yyfree_stacks = 1;
+#endif
+      yyss = (short *) YYSTACK_ALLOC (yystacksize * sizeof (*yyssp));
+      __yy_memcpy ((char *)yyss, (char *)yyss1,
+		   size * (unsigned int) sizeof (*yyssp));
+      yyvs = (YYSTYPE *) YYSTACK_ALLOC (yystacksize * sizeof (*yyvsp));
+      __yy_memcpy ((char *)yyvs, (char *)yyvs1,
+		   size * (unsigned int) sizeof (*yyvsp));
 #ifdef YYLSP_NEEDED
-      yyls = (YYLTYPE *) alloca (yystacksize * sizeof (*yylsp));
-      __yy_memcpy ((char *)yyls, (char *)yyls1, size * sizeof (*yylsp));
+      yyls = (YYLTYPE *) YYSTACK_ALLOC (yystacksize * sizeof (*yylsp));
+      __yy_memcpy ((char *)yyls, (char *)yyls1,
+		   size * (unsigned int) sizeof (*yylsp));
 #endif
 #endif /* no yyoverflow */
 
@@ -5784,7 +5828,7 @@ case 326:
     break;}
 }
    /* the action file gets copied in in place of this dollarsign */
-#line 498 "bison.simple"
+#line 543 "/usr/lib/bison.simple"
 
   yyvsp -= yylen;
   yyssp -= yylen;
@@ -5979,6 +6023,30 @@ yyerrhandle:
 
   yystate = yyn;
   goto yynewstate;
+
+ yyacceptlab:
+  /* YYACCEPT comes here.  */
+  if (yyfree_stacks)
+    {
+      free (yyss);
+      free (yyvs);
+#ifdef YYLSP_NEEDED
+      free (yyls);
+#endif
+    }
+  return 0;
+
+ yyabortlab:
+  /* YYABORT comes here.  */
+  if (yyfree_stacks)
+    {
+      free (yyss);
+      free (yyvs);
+#ifdef YYLSP_NEEDED
+      free (yyls);
+#endif
+    }
+  return 1;
 }
 #line 2517 "Gmsh.y"
 
diff --git a/Parser/Gmsh.tab.cpp.h b/Parser/Gmsh.tab.cpp.h
index 3dbfd324b02bee0117e0c5633f658557a99cf178..9a9f530bbb1371f53cd97a3a70f921aa63d067a5 100644
--- a/Parser/Gmsh.tab.cpp.h
+++ b/Parser/Gmsh.tab.cpp.h
@@ -7,165 +7,165 @@ typedef union {
   Shape    s;
   List_T  *l;
 } YYSTYPE;
-#define	tDOUBLE	257
-#define	tSTRING	258
-#define	tBIGSTR	259
-#define	tEND	260
-#define	tAFFECT	261
-#define	tDOTS	262
-#define	tPi	263
-#define	tExp	264
-#define	tLog	265
-#define	tLog10	266
-#define	tSqrt	267
-#define	tSin	268
-#define	tAsin	269
-#define	tCos	270
-#define	tAcos	271
-#define	tTan	272
-#define	tRand	273
-#define	tAtan	274
-#define	tAtan2	275
-#define	tSinh	276
-#define	tCosh	277
-#define	tTanh	278
-#define	tFabs	279
-#define	tFloor	280
-#define	tCeil	281
-#define	tFmod	282
-#define	tModulo	283
-#define	tHypot	284
-#define	tPrintf	285
-#define	tDraw	286
-#define	tSleep	287
-#define	tPoint	288
-#define	tCircle	289
-#define	tEllipsis	290
-#define	tLine	291
-#define	tSurface	292
-#define	tSpline	293
-#define	tVolume	294
-#define	tCharacteristic	295
-#define	tLength	296
-#define	tParametric	297
-#define	tElliptic	298
-#define	tPlane	299
-#define	tRuled	300
-#define	tTransfinite	301
-#define	tComplex	302
-#define	tPhysical	303
-#define	tUsing	304
-#define	tBump	305
-#define	tProgression	306
-#define	tRotate	307
-#define	tTranslate	308
-#define	tSymmetry	309
-#define	tDilate	310
-#define	tExtrude	311
-#define	tDuplicata	312
-#define	tLoop	313
-#define	tInclude	314
-#define	tRecombine	315
-#define	tDelete	316
-#define	tCoherence	317
-#define	tView	318
-#define	tAttractor	319
-#define	tLayers	320
-#define	tScalarTetrahedron	321
-#define	tVectorTetrahedron	322
-#define	tTensorTetrahedron	323
-#define	tScalarTriangle	324
-#define	tVectorTriangle	325
-#define	tTensorTriangle	326
-#define	tScalarLine	327
-#define	tVectorLine	328
-#define	tTensorLine	329
-#define	tScalarPoint	330
-#define	tVectorPoint	331
-#define	tTensorPoint	332
-#define	tBSpline	333
-#define	tNurbs	334
-#define	tOrder	335
-#define	tWith	336
-#define	tBounds	337
-#define	tKnots	338
-#define	tColor	339
-#define	tFor	340
-#define	tEndFor	341
-#define	tScript	342
-#define	tExit	343
-#define	tMerge	344
-#define	tReturn	345
-#define	tCall	346
-#define	tFunction	347
-#define	tB_SPLINE_SURFACE_WITH_KNOTS	348
-#define	tB_SPLINE_CURVE_WITH_KNOTS	349
-#define	tCARTESIAN_POINT	350
-#define	tTRUE	351
-#define	tFALSE	352
-#define	tUNSPECIFIED	353
-#define	tU	354
-#define	tV	355
-#define	tEDGE_CURVE	356
-#define	tVERTEX_POINT	357
-#define	tORIENTED_EDGE	358
-#define	tPLANE	359
-#define	tFACE_OUTER_BOUND	360
-#define	tEDGE_LOOP	361
-#define	tADVANCED_FACE	362
-#define	tVECTOR	363
-#define	tDIRECTION	364
-#define	tAXIS2_PLACEMENT_3D	365
-#define	tISO	366
-#define	tENDISO	367
-#define	tENDSEC	368
-#define	tDATA	369
-#define	tHEADER	370
-#define	tFILE_DESCRIPTION	371
-#define	tFILE_SCHEMA	372
-#define	tFILE_NAME	373
-#define	tMANIFOLD_SOLID_BREP	374
-#define	tCLOSED_SHELL	375
-#define	tADVANCED_BREP_SHAPE_REPRESENTATION	376
-#define	tFACE_BOUND	377
-#define	tCYLINDRICAL_SURFACE	378
-#define	tCONICAL_SURFACE	379
-#define	tCIRCLE	380
-#define	tTRIMMED_CURVE	381
-#define	tGEOMETRIC_SET	382
-#define	tCOMPOSITE_CURVE_SEGMENT	383
-#define	tCONTINUOUS	384
-#define	tCOMPOSITE_CURVE	385
-#define	tTOROIDAL_SURFACE	386
-#define	tPRODUCT_DEFINITION	387
-#define	tPRODUCT_DEFINITION_SHAPE	388
-#define	tSHAPE_DEFINITION_REPRESENTATION	389
-#define	tELLIPSE	390
-#define	tTrimmed	391
-#define	tSolid	392
-#define	tEndSolid	393
-#define	tVertex	394
-#define	tFacet	395
-#define	tNormal	396
-#define	tOuter	397
-#define	tLoopSTL	398
-#define	tEndLoop	399
-#define	tEndFacet	400
-#define	tAND	401
-#define	tOR	402
-#define	tNOTEQUAL	403
-#define	tEQUAL	404
-#define	tAPPROXEQUAL	405
-#define	tAFFECTPLUS	406
-#define	tAFFECTMINUS	407
-#define	tAFFECTTIMES	408
-#define	tAFFECTDIVIDE	409
-#define	tLESSOREQUAL	410
-#define	tGREATEROREQUAL	411
-#define	tCROSSPRODUCT	412
-#define	UNARYPREC	413
-#define	tPLUSPLUS	414
-#define	tMINUSMINUS	415
+#define	tDOUBLE	258
+#define	tSTRING	259
+#define	tBIGSTR	260
+#define	tEND	261
+#define	tAFFECT	262
+#define	tDOTS	263
+#define	tPi	264
+#define	tExp	265
+#define	tLog	266
+#define	tLog10	267
+#define	tSqrt	268
+#define	tSin	269
+#define	tAsin	270
+#define	tCos	271
+#define	tAcos	272
+#define	tTan	273
+#define	tRand	274
+#define	tAtan	275
+#define	tAtan2	276
+#define	tSinh	277
+#define	tCosh	278
+#define	tTanh	279
+#define	tFabs	280
+#define	tFloor	281
+#define	tCeil	282
+#define	tFmod	283
+#define	tModulo	284
+#define	tHypot	285
+#define	tPrintf	286
+#define	tDraw	287
+#define	tSleep	288
+#define	tPoint	289
+#define	tCircle	290
+#define	tEllipsis	291
+#define	tLine	292
+#define	tSurface	293
+#define	tSpline	294
+#define	tVolume	295
+#define	tCharacteristic	296
+#define	tLength	297
+#define	tParametric	298
+#define	tElliptic	299
+#define	tPlane	300
+#define	tRuled	301
+#define	tTransfinite	302
+#define	tComplex	303
+#define	tPhysical	304
+#define	tUsing	305
+#define	tBump	306
+#define	tProgression	307
+#define	tRotate	308
+#define	tTranslate	309
+#define	tSymmetry	310
+#define	tDilate	311
+#define	tExtrude	312
+#define	tDuplicata	313
+#define	tLoop	314
+#define	tInclude	315
+#define	tRecombine	316
+#define	tDelete	317
+#define	tCoherence	318
+#define	tView	319
+#define	tAttractor	320
+#define	tLayers	321
+#define	tScalarTetrahedron	322
+#define	tVectorTetrahedron	323
+#define	tTensorTetrahedron	324
+#define	tScalarTriangle	325
+#define	tVectorTriangle	326
+#define	tTensorTriangle	327
+#define	tScalarLine	328
+#define	tVectorLine	329
+#define	tTensorLine	330
+#define	tScalarPoint	331
+#define	tVectorPoint	332
+#define	tTensorPoint	333
+#define	tBSpline	334
+#define	tNurbs	335
+#define	tOrder	336
+#define	tWith	337
+#define	tBounds	338
+#define	tKnots	339
+#define	tColor	340
+#define	tFor	341
+#define	tEndFor	342
+#define	tScript	343
+#define	tExit	344
+#define	tMerge	345
+#define	tReturn	346
+#define	tCall	347
+#define	tFunction	348
+#define	tB_SPLINE_SURFACE_WITH_KNOTS	349
+#define	tB_SPLINE_CURVE_WITH_KNOTS	350
+#define	tCARTESIAN_POINT	351
+#define	tTRUE	352
+#define	tFALSE	353
+#define	tUNSPECIFIED	354
+#define	tU	355
+#define	tV	356
+#define	tEDGE_CURVE	357
+#define	tVERTEX_POINT	358
+#define	tORIENTED_EDGE	359
+#define	tPLANE	360
+#define	tFACE_OUTER_BOUND	361
+#define	tEDGE_LOOP	362
+#define	tADVANCED_FACE	363
+#define	tVECTOR	364
+#define	tDIRECTION	365
+#define	tAXIS2_PLACEMENT_3D	366
+#define	tISO	367
+#define	tENDISO	368
+#define	tENDSEC	369
+#define	tDATA	370
+#define	tHEADER	371
+#define	tFILE_DESCRIPTION	372
+#define	tFILE_SCHEMA	373
+#define	tFILE_NAME	374
+#define	tMANIFOLD_SOLID_BREP	375
+#define	tCLOSED_SHELL	376
+#define	tADVANCED_BREP_SHAPE_REPRESENTATION	377
+#define	tFACE_BOUND	378
+#define	tCYLINDRICAL_SURFACE	379
+#define	tCONICAL_SURFACE	380
+#define	tCIRCLE	381
+#define	tTRIMMED_CURVE	382
+#define	tGEOMETRIC_SET	383
+#define	tCOMPOSITE_CURVE_SEGMENT	384
+#define	tCONTINUOUS	385
+#define	tCOMPOSITE_CURVE	386
+#define	tTOROIDAL_SURFACE	387
+#define	tPRODUCT_DEFINITION	388
+#define	tPRODUCT_DEFINITION_SHAPE	389
+#define	tSHAPE_DEFINITION_REPRESENTATION	390
+#define	tELLIPSE	391
+#define	tTrimmed	392
+#define	tSolid	393
+#define	tEndSolid	394
+#define	tVertex	395
+#define	tFacet	396
+#define	tNormal	397
+#define	tOuter	398
+#define	tLoopSTL	399
+#define	tEndLoop	400
+#define	tEndFacet	401
+#define	tAND	402
+#define	tOR	403
+#define	tNOTEQUAL	404
+#define	tEQUAL	405
+#define	tAPPROXEQUAL	406
+#define	tAFFECTPLUS	407
+#define	tAFFECTMINUS	408
+#define	tAFFECTTIMES	409
+#define	tAFFECTDIVIDE	410
+#define	tLESSOREQUAL	411
+#define	tGREATEROREQUAL	412
+#define	tCROSSPRODUCT	413
+#define	UNARYPREC	414
+#define	tPLUSPLUS	415
+#define	tMINUSMINUS	416
 
 
 extern YYSTYPE yylval;
diff --git a/Parser/Gmsh.y b/Parser/Gmsh.y
index b96b14ce9f8a9c79d961435839933483954d2c71..ccce4006f6847962c2e37e44985f5432f85075ec 100644
--- a/Parser/Gmsh.y
+++ b/Parser/Gmsh.y
@@ -1,4 +1,4 @@
-%{ /* $Id: Gmsh.y,v 1.31 2000-12-08 22:17:47 geuzaine Exp $ */
+%{ /* $Id: Gmsh.y,v 1.32 2000-12-08 22:29:50 geuzaine Exp $ */
 
 #include <stdarg.h>
 
@@ -2254,7 +2254,7 @@ FExpr_Range :
 VExpr :
     VExpr_Single
     {
-      $$ = $1;
+      for(i=0 ; i<6 ; i++) $$[i] = $1[i];
     }
   | '-' VExpr %prec UNARYPREC
     {
@@ -2262,7 +2262,7 @@ VExpr :
     }
   | '+' VExpr %prec UNARYPREC
     { 
-      $$ = $2;
+      for(i=0 ; i<6 ; i++) $$[i] = $2[i];
     }
   | VExpr '-' VExpr
     { 
diff --git a/Parser/Gmsh.yy.cpp b/Parser/Gmsh.yy.cpp
index 7d790e876e5d4b99986171422b367afa97e42635..cca4365d9efc09ad5ad00d3b187bf3749c25712b 100644
--- a/Parser/Gmsh.yy.cpp
+++ b/Parser/Gmsh.yy.cpp
@@ -2,7 +2,7 @@
 /* A lexical scanner generated by flex */
 
 /* Scanner skeleton version:
- * $Header: /cvsroot/gmsh/Parser/Gmsh.yy.cpp,v 1.32 2000-12-08 22:17:48 geuzaine Exp $
+ * $Header: /cvsroot/gmsh/Parser/Gmsh.yy.cpp,v 1.33 2000-12-08 22:29:50 geuzaine Exp $
  */
 
 #define FLEX_SCANNER
@@ -1166,7 +1166,7 @@ YY_MALLOC_DECL
 YY_DECL
 	{
 	register yy_state_type yy_current_state;
-	register char *yy_cp = NULL, *yy_bp = NULL;
+	register char *yy_cp, *yy_bp;
 	register int yy_act;
 
 #line 60 "Gmsh.l"
@@ -2530,6 +2530,20 @@ static int input()
 #endif
 	{
 	int c;
+	static int _xpg = -1;
+
+	if (_xpg == -1)
+		{
+			char *_xpgenv = getenv("_XPG");
+			if (_xpgenv == NULL)
+				_xpg = 0;
+			else
+				{
+				_xpg = atoi(_xpgenv);
+				if (_xpg < 0)
+					_xpg = 0;
+				}
+		}
 
 	*yy_c_buf_p = yy_hold_char;
 
@@ -2567,18 +2581,21 @@ static int input()
 					/* fall through */
 
 				case EOB_ACT_END_OF_FILE:
-					{
-					if ( yywrap() )
-						return EOF;
-
-					if ( ! yy_did_buffer_switch_on_eof )
-						YY_NEW_FILE;
+					if (_xpg)
+						return 0;
+					else
+						{
+						if ( yywrap() )
+							return 0;
+
+						if ( ! yy_did_buffer_switch_on_eof )
+							YY_NEW_FILE;
 #ifdef __cplusplus
-					return yyinput();
+						return yyinput();
 #else
-					return input();
+						return input();
 #endif
-					}
+						}
 
 				case EOB_ACT_CONTINUE_SCAN:
 					yy_c_buf_p = yytext_ptr + offset;