Merge branch 'gawk-4.0-stable'

7 files changed, 1066 insertions, 1122 deletions

diff --git a/NEWS b/NEWS
index d8c6549a..6b542028 100644
--- a/NEWS
+++ b/NEWS
@@ -30,7 +30,9 @@ Changes from 4.0.1 to 4.1
 Changes from 4.0.1 to 4.0.2
 ---------------------------
 
-1. Infrastructure upgrades: Autoconf 2.69, Automake 1.12.
+1. Infrastructure upgrades: Autoconf 2.69, Automake 1.12,3, bison 2.6.3.
+
+xx. Various minor bug fixes and documentation updates.
  
 Changes from 4.0.0 to 4.0.1
 ---------------------------
diff --git a/command.c b/command.c
index 2872228c..5334978d 100644
--- a/command.c
+++ b/command.c
@@ -1,8 +1,8 @@
-/* A Bison parser, made by GNU Bison 2.5.  */
+/* A Bison parser, made by GNU Bison 2.6.2.  */
 
 /* Bison implementation for Yacc-like parsers in C
    
-      Copyright (C) 1984, 1989-1990, 2000-2011 Free Software Foundation, Inc.
+      Copyright (C) 1984, 1989-1990, 2000-2012 Free Software Foundation, Inc.
    
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -44,7 +44,7 @@
 #define YYBISON 1
 
 /* Bison version.  */
-#define YYBISON_VERSION "2.5"
+#define YYBISON_VERSION "2.6.2"
 
 /* Skeleton name.  */
 #define YYSKELETON_NAME "yacc.c"
@@ -58,8 +58,6 @@
 /* Pull parsers.  */
 #define YYPULL 1
 
-/* Using locations.  */
-#define YYLSP_NEEDED 0
 
 /* Substitute the variable and function names.  */
 #define yyparse         zzparse
@@ -70,10 +68,8 @@
 #define yydebug         zzdebug
 #define yynerrs         zznerrs
 
-
 /* Copy the first part of user declarations.  */
-
-/* Line 268 of yacc.c  */
+/* Line 336 of yacc.c  */
 #line 26 "command.y"
 
 #include "awk.h"
@@ -141,14 +137,16 @@ static void append_cmdarg(CMDARG *arg);
 static int find_argument(CMDARG *arg);
 #define YYSTYPE CMDARG *
 
+/* Line 336 of yacc.c  */
+#line 142 "command.c"
 
-/* Line 268 of yacc.c  */
-#line 147 "command.c"
-
-/* Enabling traces.  */
-#ifndef YYDEBUG
-# define YYDEBUG 0
-#endif
+# ifndef YY_NULL
+#  if defined __cplusplus && 201103L <= __cplusplus
+#   define YY_NULL nullptr
+#  else
+#   define YY_NULL 0
+#  endif
+# endif
 
 /* Enabling verbose error messages.  */
 #ifdef YYERROR_VERBOSE
@@ -158,11 +156,17 @@ static int find_argument(CMDARG *arg);
 # define YYERROR_VERBOSE 0
 #endif
 
-/* Enabling the token table.  */
-#ifndef YYTOKEN_TABLE
-# define YYTOKEN_TABLE 0
+/* In a future release of Bison, this section will be replaced
+   by #include "".  */
+#ifndef ZZ_
+# define ZZ_
+/* Enabling traces.  */
+#ifndef YYDEBUG
+# define YYDEBUG 0
+#endif
+#if YYDEBUG
+extern int zzdebug;
 #endif
-
 
 /* Tokens.  */
 #ifndef YYTOKENTYPE
@@ -268,7 +272,6 @@ static int find_argument(CMDARG *arg);
 
 
 
-
 #if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
 typedef int YYSTYPE;
 # define YYSTYPE_IS_TRIVIAL 1
@@ -276,12 +279,28 @@ typedef int YYSTYPE;
 # define YYSTYPE_IS_DECLARED 1
 #endif
 
+extern YYSTYPE zzlval;
 
-/* Copy the second part of user declarations.  */
+#ifdef YYPARSE_PARAM
+#if defined __STDC__ || defined __cplusplus
+int zzparse (void *YYPARSE_PARAM);
+#else
+int zzparse ();
+#endif
+#else /* ! YYPARSE_PARAM */
+#if defined __STDC__ || defined __cplusplus
+int zzparse (void);
+#else
+int zzparse ();
+#endif
+#endif /* ! YYPARSE_PARAM */
 
+#endif /* !ZZ_  */
 
-/* Line 343 of yacc.c  */
-#line 285 "command.c"
+/* Copy the second part of user declarations.  */
+
+/* Line 353 of yacc.c  */
+#line 304 "command.c"
 
 #ifdef short
 # undef short
@@ -386,6 +405,7 @@ YYID (yyi)
 #    if ! defined _ALLOCA_H && ! defined EXIT_SUCCESS && (defined __STDC__ || defined __C99__FUNC__ \
      || defined __cplusplus || defined _MSC_VER)
 #     include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
+      /* Use EXIT_SUCCESS as a witness for stdlib.h.  */
 #     ifndef EXIT_SUCCESS
 #      define EXIT_SUCCESS 0
 #     endif
@@ -475,20 +495,20 @@ union yyalloc
 #endif
 
 #if defined YYCOPY_NEEDED && YYCOPY_NEEDED
-/* Copy COUNT objects from FROM to TO.  The source and destination do
+/* Copy COUNT objects from SRC to DST.  The source and destination do
    not overlap.  */
 # ifndef YYCOPY
 #  if defined __GNUC__ && 1 < __GNUC__
-#   define YYCOPY(To, From, Count) \
-      __builtin_memcpy (To, From, (Count) * sizeof (*(From)))
+#   define YYCOPY(Dst, Src, Count) \
+      __builtin_memcpy (Dst, Src, (Count) * sizeof (*(Src)))
 #  else
-#   define YYCOPY(To, From, Count)		\
-      do					\
-	{					\
-	  YYSIZE_T yyi;				\
-	  for (yyi = 0; yyi < (Count); yyi++)	\
-	    (To)[yyi] = (From)[yyi];		\
-	}					\
+#   define YYCOPY(Dst, Src, Count)              \
+      do                                        \
+        {                                       \
+          YYSIZE_T yyi;                         \
+          for (yyi = 0; yyi < (Count); yyi++)   \
+            (Dst)[yyi] = (Src)[yyi];            \
+        }                                       \
       while (YYID (0))
 #  endif
 # endif
@@ -640,7 +660,7 @@ static const yytype_uint16 yyrline[] =
 };
 #endif
 
-#if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
+#if YYDEBUG || YYERROR_VERBOSE || 0
 /* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
    First, the terminals, then, starting at YYNTOKENS, nonterminals.  */
 static const char *const yytname[] =
@@ -664,7 +684,7 @@ static const char *const yytname[] =
   "printf_args", "list_args", "integer_range", "opt_integer_list",
   "integer_list", "exp_list", "subscript", "subscript_list", "variable",
   "node", "opt_plus_integer", "opt_integer", "plus_integer", "integer",
-  "nls", 0
+  "nls", YY_NULL
 };
 #endif
 
@@ -916,17 +936,18 @@ static const yytype_uint8 yystos[] =
 
 #define YYRECOVERING()  (!!yyerrstatus)
 
-#define YYBACKUP(Token, Value)					\
-do								\
-  if (yychar == YYEMPTY && yylen == 1)				\
-    {								\
-      yychar = (Token);						\
-      yylval = (Value);						\
-      YYPOPSTACK (1);						\
-      goto yybackup;						\
-    }								\
-  else								\
-    {								\
+#define YYBACKUP(Token, Value)                                  \
+do                                                              \
+  if (yychar == YYEMPTY)                                        \
+    {                                                           \
+      yychar = (Token);                                         \
+      yylval = (Value);                                         \
+      YYPOPSTACK (yylen);                                       \
+      yystate = *yyssp;                                         \
+      goto yybackup;                                            \
+    }                                                           \
+  else                                                          \
+    {                                                           \
       yyerror (YY_("syntax error: cannot back up")); \
       YYERROR;							\
     }								\
@@ -936,32 +957,33 @@ while (YYID (0))
 #define YYTERROR	1
 #define YYERRCODE	256
 
-
 /* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N].
    If N is 0, then set CURRENT to the empty location which ends
    the previous symbol: RHS[0] (always defined).  */
 
-#define YYRHSLOC(Rhs, K) ((Rhs)[K])
 #ifndef YYLLOC_DEFAULT
-# define YYLLOC_DEFAULT(Current, Rhs, N)				\
-    do									\
-      if (YYID (N))                                                    \
-	{								\
-	  (Current).first_line   = YYRHSLOC (Rhs, 1).first_line;	\
-	  (Current).first_column = YYRHSLOC (Rhs, 1).first_column;	\
-	  (Current).last_line    = YYRHSLOC (Rhs, N).last_line;		\
-	  (Current).last_column  = YYRHSLOC (Rhs, N).last_column;	\
-	}								\
-      else								\
-	{								\
-	  (Current).first_line   = (Current).last_line   =		\
-	    YYRHSLOC (Rhs, 0).last_line;				\
-	  (Current).first_column = (Current).last_column =		\
-	    YYRHSLOC (Rhs, 0).last_column;				\
-	}								\
+# define YYLLOC_DEFAULT(Current, Rhs, N)                                \
+    do                                                                  \
+      if (YYID (N))                                                     \
+        {                                                               \
+          (Current).first_line   = YYRHSLOC (Rhs, 1).first_line;        \
+          (Current).first_column = YYRHSLOC (Rhs, 1).first_column;      \
+          (Current).last_line    = YYRHSLOC (Rhs, N).last_line;         \
+          (Current).last_column  = YYRHSLOC (Rhs, N).last_column;       \
+        }                                                               \
+      else                                                              \
+        {                                                               \
+          (Current).first_line   = (Current).last_line   =              \
+            YYRHSLOC (Rhs, 0).last_line;                                \
+          (Current).first_column = (Current).last_column =              \
+            YYRHSLOC (Rhs, 0).last_column;                              \
+        }                                                               \
     while (YYID (0))
 #endif
 
+#define YYRHSLOC(Rhs, K) ((Rhs)[K])
+
+
 
 /* This macro is provided for backward compatibility. */
 
@@ -1020,6 +1042,8 @@ yy_symbol_value_print (yyoutput, yytype, yyvaluep)
     YYSTYPE const * const yyvaluep;
 #endif
 {
+  FILE *yyo = yyoutput;
+  YYUSE (yyo);
   if (!yyvaluep)
     return;
 # ifdef YYPRINT
@@ -1266,12 +1290,12 @@ static int
 yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg,
                 yytype_int16 *yyssp, int yytoken)
 {
-  YYSIZE_T yysize0 = yytnamerr (0, yytname[yytoken]);
+  YYSIZE_T yysize0 = yytnamerr (YY_NULL, yytname[yytoken]);
   YYSIZE_T yysize = yysize0;
   YYSIZE_T yysize1;
   enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
   /* Internationalized format string. */
-  const char *yyformat = 0;
+  const char *yyformat = YY_NULL;
   /* Arguments of yyformat. */
   char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
   /* Number of reported tokens (one for the "unexpected", one per
@@ -1331,7 +1355,7 @@ yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg,
                     break;
                   }
                 yyarg[yycount++] = yytname[yyx];
-                yysize1 = yysize + yytnamerr (0, yytname[yyx]);
+                yysize1 = yysize + yytnamerr (YY_NULL, yytname[yyx]);
                 if (! (yysize <= yysize1
                        && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
                   return 2;
@@ -1422,20 +1446,6 @@ yydestruct (yymsg, yytype, yyvaluep)
 }
 
 
-/* Prevent warnings from -Wmissing-prototypes.  */
-#ifdef YYPARSE_PARAM
-#if defined __STDC__ || defined __cplusplus
-int yyparse (void *YYPARSE_PARAM);
-#else
-int yyparse ();
-#endif
-#else /* ! YYPARSE_PARAM */
-#if defined __STDC__ || defined __cplusplus
-int yyparse (void);
-#else
-int yyparse ();
-#endif
-#endif /* ! YYPARSE_PARAM */
 
 
 /* The lookahead symbol.  */
@@ -1480,7 +1490,7 @@ yyparse ()
        `yyss': related to states.
        `yyvs': related to semantic values.
 
-       Refer to the stacks thru separate pointers, to allow yyoverflow
+       Refer to the stacks through separate pointers, to allow yyoverflow
        to reallocate them elsewhere.  */
 
     /* The state stack.  */
@@ -1534,7 +1544,6 @@ yyparse ()
      The wasted elements are never initialized.  */
   yyssp = yyss;
   yyvsp = yyvs;
-
   goto yysetstate;
 
 /*------------------------------------------------------------.
@@ -1712,8 +1721,7 @@ yyreduce:
   switch (yyn)
     {
         case 3:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 109 "command.y"
     {
 		cmd_idx = -1;
@@ -1732,8 +1740,7 @@ yyreduce:
     break;
 
   case 5:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 128 "command.y"
     {
 		if (errcount == 0 && cmd_idx >= 0) {
@@ -1787,8 +1794,7 @@ yyreduce:
     break;
 
   case 6:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 178 "command.y"
     {
 		yyerrok;
@@ -1796,15 +1802,13 @@ yyreduce:
     break;
 
   case 22:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 212 "command.y"
     { want_nodeval = true; }
     break;
 
   case 23:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 217 "command.y"
     {
 		if (errcount == 0) {
@@ -1824,8 +1828,7 @@ yyreduce:
     break;
 
   case 24:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 236 "command.y"
     {
 		(yyval) = append_statement(arg_list, (char *) start_EVAL);
@@ -1837,15 +1840,13 @@ yyreduce:
     break;
 
   case 25:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 243 "command.y"
     { (yyval) = append_statement((yyvsp[(1) - (2)]), lexptr_begin); }
     break;
 
   case 26:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 244 "command.y"
     {
 		(yyval) = (yyvsp[(3) - (4)]);
@@ -1853,8 +1854,7 @@ yyreduce:
     break;
 
   case 27:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 251 "command.y"
     {
 		arg_list = append_statement((yyvsp[(2) - (3)]), (char *) end_EVAL);
@@ -1874,8 +1874,7 @@ yyreduce:
     break;
 
   case 28:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 267 "command.y"
     {
 		NODE *n;
@@ -1890,8 +1889,7 @@ yyreduce:
     break;
 
   case 34:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 286 "command.y"
     {
 		if (cmdtab[cmd_idx].class == D_FRAME
@@ -1901,8 +1899,7 @@ yyreduce:
     break;
 
   case 35:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 292 "command.y"
     {
 		int idx = find_argument((yyvsp[(2) - (2)]));
@@ -1918,50 +1915,43 @@ yyreduce:
     break;
 
   case 38:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 305 "command.y"
     { want_nodeval = true; }
     break;
 
   case 40:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 306 "command.y"
     { want_nodeval = true; }
     break;
 
   case 46:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 311 "command.y"
     { want_nodeval = true; }
     break;
 
   case 49:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 313 "command.y"
     { want_nodeval = true; }
     break;
 
   case 51:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 314 "command.y"
     { want_nodeval = true; }
     break;
 
   case 53:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 315 "command.y"
     { want_nodeval = true; }
     break;
 
   case 57:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 319 "command.y"
     {
 		if (in_cmd_src((yyvsp[(2) - (2)])->a_string))
@@ -1970,8 +1960,7 @@ yyreduce:
     break;
 
   case 58:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 324 "command.y"
     {
 		if (! input_from_tty)
@@ -1980,8 +1969,7 @@ yyreduce:
     break;
 
   case 59:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 329 "command.y"
     {
 		int type = 0;
@@ -2011,8 +1999,7 @@ yyreduce:
     break;
 
   case 60:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 355 "command.y"
     {
 		if (! in_commands)
@@ -2026,8 +2013,7 @@ yyreduce:
     break;
 
   case 61:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 365 "command.y"
     {
 		if (! in_commands)
@@ -2036,8 +2022,7 @@ yyreduce:
     break;
 
   case 62:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 370 "command.y"
     {
 		int idx = find_argument((yyvsp[(2) - (2)]));
@@ -2053,15 +2038,13 @@ yyreduce:
     break;
 
   case 63:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 381 "command.y"
     { want_nodeval = true; }
     break;
 
   case 64:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 382 "command.y"
     {
 		int type;
@@ -2073,8 +2056,7 @@ yyreduce:
     break;
 
   case 65:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 390 "command.y"
     {
 		if (in_commands) {
@@ -2089,8 +2071,7 @@ yyreduce:
     break;
 
   case 66:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 404 "command.y"
     {
 		if ((yyvsp[(1) - (1)]) != NULL) {
@@ -2104,43 +2085,37 @@ yyreduce:
     break;
 
   case 68:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 418 "command.y"
     {	(yyval) = NULL; }
     break;
 
   case 69:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 423 "command.y"
     { (yyval) = NULL; }
     break;
 
   case 74:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 432 "command.y"
     { (yyval) = NULL; }
     break;
 
   case 75:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 437 "command.y"
     { (yyval) = NULL; }
     break;
 
   case 77:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 440 "command.y"
     { (yyval) = NULL; }
     break;
 
   case 78:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 445 "command.y"
     {
 		NODE *n;
@@ -2151,15 +2126,13 @@ yyreduce:
     break;
 
   case 79:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 455 "command.y"
     { (yyval) = NULL; }
     break;
 
   case 80:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 457 "command.y"
     {
 		if (find_option((yyvsp[(1) - (1)])->a_string) < 0)
@@ -2168,8 +2141,7 @@ yyreduce:
     break;
 
   case 81:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 462 "command.y"
     {
 		if (find_option((yyvsp[(1) - (3)])->a_string) < 0)
@@ -2178,8 +2150,7 @@ yyreduce:
     break;
 
   case 82:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 470 "command.y"
     {
 		NODE *n;
@@ -2196,57 +2167,49 @@ yyreduce:
     break;
 
   case 83:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 486 "command.y"
     { (yyval) = NULL; }
     break;
 
   case 88:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 495 "command.y"
     { (yyval) = NULL; }
     break;
 
   case 89:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 496 "command.y"
     { want_nodeval = true; }
     break;
 
   case 92:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 498 "command.y"
     { want_nodeval = true; }
     break;
 
   case 95:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 504 "command.y"
     { (yyval) = NULL; }
     break;
 
   case 97:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 510 "command.y"
     { (yyval) = NULL; }
     break;
 
   case 99:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 516 "command.y"
     { (yyval) = NULL; }
     break;
 
   case 104:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 528 "command.y"
     {
 		int idx = find_argument((yyvsp[(1) - (2)]));
@@ -2262,8 +2225,7 @@ yyreduce:
     break;
 
   case 106:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 544 "command.y"
     {
 		(yyvsp[(2) - (2)])->type = D_array;	/* dump all items */
@@ -2272,8 +2234,7 @@ yyreduce:
     break;
 
   case 107:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 549 "command.y"
     {
 		(yyvsp[(2) - (3)])->type = D_array;
@@ -2282,22 +2243,19 @@ yyreduce:
     break;
 
   case 117:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 575 "command.y"
     { (yyval) = NULL; }
     break;
 
   case 118:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 577 "command.y"
     { (yyval) = NULL; }
     break;
 
   case 119:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 579 "command.y"
     {
 		CMDARG *a;
@@ -2308,8 +2266,7 @@ yyreduce:
     break;
 
   case 126:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 595 "command.y"
     {
 		if ((yyvsp[(1) - (3)])->a_int > (yyvsp[(3) - (3)])->a_int)
@@ -2322,29 +2279,25 @@ yyreduce:
     break;
 
   case 127:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 607 "command.y"
     { (yyval) = NULL; }
     break;
 
   case 134:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 621 "command.y"
     { (yyval) = (yyvsp[(1) - (1)]); }
     break;
 
   case 135:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 623 "command.y"
     { (yyval) = (yyvsp[(1) - (3)]); }
     break;
 
   case 137:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 629 "command.y"
     {
 		CMDARG *a;
@@ -2363,22 +2316,19 @@ yyreduce:
     break;
 
   case 139:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 648 "command.y"
     { (yyval) = (yyvsp[(1) - (1)]); num_dim = 1; }
     break;
 
   case 140:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 650 "command.y"
     {	(yyval) = (yyvsp[(1) - (2)]); num_dim++; }
     break;
 
   case 142:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 656 "command.y"
     {
 		NODE *n = (yyvsp[(2) - (2)])->a_node;
@@ -2391,8 +2341,7 @@ yyreduce:
     break;
 
   case 143:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 665 "command.y"
     {
 		/* a_string is array name, a_count is dimension count */
@@ -2403,15 +2352,13 @@ yyreduce:
     break;
 
   case 144:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 675 "command.y"
     { (yyval) = (yyvsp[(1) - (1)]); }
     break;
 
   case 145:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 677 "command.y"
     { 
 		NODE *n = (yyvsp[(2) - (2)])->a_node;
@@ -2422,8 +2369,7 @@ yyreduce:
     break;
 
   case 146:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 684 "command.y"
     { 
 		NODE *n = (yyvsp[(2) - (2)])->a_node;
@@ -2436,36 +2382,31 @@ yyreduce:
     break;
 
   case 147:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 696 "command.y"
     { (yyval) = NULL; }
     break;
 
   case 148:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 698 "command.y"
     { (yyval) = (yyvsp[(1) - (1)]); }
     break;
 
   case 149:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 703 "command.y"
     { (yyval) = NULL; }
     break;
 
   case 150:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 705 "command.y"
     { (yyval) = (yyvsp[(1) - (1)]); }
     break;
 
   case 151:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 710 "command.y"
     {
 		if ((yyvsp[(1) - (1)])->a_int == 0)
@@ -2475,8 +2416,7 @@ yyreduce:
     break;
 
   case 152:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 716 "command.y"
     {
 		if ((yyvsp[(2) - (2)])->a_int == 0)
@@ -2486,22 +2426,19 @@ yyreduce:
     break;
 
   case 153:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 725 "command.y"
     { (yyval) = (yyvsp[(1) - (1)]); }
     break;
 
   case 154:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 727 "command.y"
     { (yyval) = (yyvsp[(2) - (2)]); }
     break;
 
   case 155:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 729 "command.y"
     {
 		(yyvsp[(2) - (2)])->a_int = - (yyvsp[(2) - (2)])->a_int;
@@ -2510,8 +2447,7 @@ yyreduce:
     break;
 
   case 156:
-
-/* Line 1806 of yacc.c  */
+/* Line 1787 of yacc.c  */
 #line 737 "command.y"
     {
 		if (lexptr_begin != NULL) {
@@ -2524,9 +2460,8 @@ yyreduce:
     break;
 
 
-
-/* Line 1806 of yacc.c  */
-#line 2542 "command.c"
+/* Line 1787 of yacc.c  */
+#line 2477 "command.c"
       default: break;
     }
   /* User semantic actions sometimes alter yychar, and that requires
@@ -2713,7 +2648,7 @@ yyabortlab:
   yyresult = 1;
   goto yyreturn;
 
-#if !defined(yyoverflow) || YYERROR_VERBOSE
+#if !defined yyoverflow || YYERROR_VERBOSE
 /*-------------------------------------------------.
 | yyexhaustedlab -- memory exhaustion comes here.  |
 `-------------------------------------------------*/
@@ -2755,8 +2690,7 @@ yyreturn:
 }
 
 
-
-/* Line 2067 of yacc.c  */
+/* Line 2048 of yacc.c  */
 #line 747 "command.y"
 
 
@@ -3704,4 +3638,3 @@ history_expand_line(char **line)
 }
 
 #endif
-
diff --git a/doc/gawk.info b/doc/gawk.info
index 4c10ab10..797a35a6 100644
--- a/doc/gawk.info
+++ b/doc/gawk.info
@@ -89,14 +89,14 @@ texts being (a) (see below), and with the Back-Cover Texts being (b)
 * Functions::                      Built-in and user-defined functions.
 * Internationalization::           Getting `gawk' to speak your
                                    language.
-* Arbitrary Precision Arithmetic:: Arbitrary precision arithmetic with
-                                   `gawk'.
 * Advanced Features::              Stuff for advanced users, specific to
                                    `gawk'.
 * Library Functions::              A Library of `awk' Functions.
 * Sample Programs::                Many `awk' programs with complete
                                    explanations.
 * Debugger::                       The `gawk' debugger.
+* Arbitrary Precision Arithmetic:: Arbitrary precision arithmetic with
+                                   `gawk'.
 * Dynamic Extensions::             Adding new built-in functions to
                                    `gawk'.
 * Language History::               The evolution of the `awk'
@@ -361,29 +361,6 @@ texts being (a) (see below), and with the Back-Cover Texts being (b)
 * I18N Portability::               `awk'-level portability issues.
 * I18N Example::                   A simple i18n example.
 * Gawk I18N::                      `gawk' is also internationalized.
-* General Arithmetic::             An introduction to computer arithmetic.
-* Floating Point Issues::          Stuff to know about floating-point numbers.
-* String Conversion Precision::    The String Value Can Lie.
-* Unexpected Results::             Floating Point Numbers Are Not Abstract
-                                   Numbers.
-* POSIX Floating Point Problems::  Standards Versus Existing Practice.
-* Integer Programming::            Effective integer programming.
-* Floating-point Programming::     Effective Floating-point Programming.
-* Floating-point Representation::  Binary floating-point representation.
-* Floating-point Context::         Floating-point context.
-* Rounding Mode::                  Floating-point rounding mode.
-* Gawk and MPFR::                  How `gawk' provides
-                                   aribitrary-precision arithmetic.
-* Arbitrary Precision Floats::     Arbitrary Precision Floating-point
-                                   Arithmetic with `gawk'.
-* Setting Precision::              Setting the working precision.
-* Setting Rounding Mode::          Setting the rounding mode.
-* Floating-point Constants::       Representing floating-point constants.
-* Changing Precision::             Changing the precision of a number.
-* Exact Arithmetic::               Exact arithmetic with floating-point
-                                   numbers.
-* Arbitrary Precision Integers::   Arbitrary Precision Integer Arithmetic with
-                                   `gawk'.
 * Nondecimal Data::                Allowing nondecimal input data.
 * Array Sorting::                  Facilities for controlling array traversal
                                    and sorting arrays.
@@ -465,6 +442,29 @@ texts being (a) (see below), and with the Back-Cover Texts being (b)
 * Miscellaneous Debugger Commands:: Miscellaneous Commands.
 * Readline Support::               Readline support.
 * Limitations::                    Limitations and future plans.
+* General Arithmetic::             An introduction to computer arithmetic.
+* Floating Point Issues::          Stuff to know about floating-point numbers.
+* String Conversion Precision::    The String Value Can Lie.
+* Unexpected Results::             Floating Point Numbers Are Not Abstract
+                                   Numbers.
+* POSIX Floating Point Problems::  Standards Versus Existing Practice.
+* Integer Programming::            Effective integer programming.
+* Floating-point Programming::     Effective Floating-point Programming.
+* Floating-point Representation::  Binary floating-point representation.
+* Floating-point Context::         Floating-point context.
+* Rounding Mode::                  Floating-point rounding mode.
+* Gawk and MPFR::                  How `gawk' provides
+                                   aribitrary-precision arithmetic.
+* Arbitrary Precision Floats::     Arbitrary Precision Floating-point
+                                   Arithmetic with `gawk'.
+* Setting Precision::              Setting the working precision.
+* Setting Rounding Mode::          Setting the rounding mode.
+* Floating-point Constants::       Representing floating-point constants.
+* Changing Precision::             Changing the precision of a number.
+* Exact Arithmetic::               Exact arithmetic with floating-point
+                                   numbers.
+* Arbitrary Precision Integers::   Arbitrary Precision Integer Arithmetic with
+                                   `gawk'.
 * Plugin License::                 A note about licensing.
 * Sample Library::                 A example of new functions.
 * Internal File Description::      What the new functions will do.
@@ -878,6 +878,9 @@ real problems.
    *note Arbitrary Precision Arithmetic::, describes advanced
 arithmetic facilities provided by `gawk'.
 
+   *note Dynamic Extensions::, describes how to add new variables and
+functions to `gawk' by writing extensions in C.
+
    *note Language History::, describes how the `awk' language has
 evolved since its first release to present.  It also describes how
 `gawk' has acquired features over time.
@@ -13180,7 +13183,7 @@ example, in the following case:
 `gawk' will look up the actual function to call only once.
 
 
-File: gawk.info,  Node: Internationalization,  Next: Arbitrary Precision Arithmetic,  Prev: Functions,  Up: Top
+File: gawk.info,  Node: Internationalization,  Next: Advanced Features,  Prev: Functions,  Up: Top
 
 10 Internationalization with `gawk'
 ***********************************
@@ -13760,7 +13763,7 @@ writing, the latest version of GNU `gettext' is version 0.18.1
 usage messages, warnings, and fatal errors in the local language.
 
 
-File: gawk.info,  Node: Advanced Features,  Next: Library Functions,  Prev: Arbitrary Precision Arithmetic,  Up: Top
+File: gawk.info,  Node: Advanced Features,  Next: Library Functions,  Prev: Internationalization,  Up: Top
 
 11 Advanced Features of `gawk'
 ******************************
@@ -18982,7 +18985,7 @@ supplies the following copyright terms:
    We leave it to you to determine what the program does.
 
 
-File: gawk.info,  Node: Debugger,  Next: Dynamic Extensions,  Prev: Sample Programs,  Up: Top
+File: gawk.info,  Node: Debugger,  Next: Arbitrary Precision Arithmetic,  Prev: Sample Programs,  Up: Top
 
 14 Debugging `awk' Programs
 ***************************
@@ -20034,402 +20037,9 @@ features may be added, and of course feel free to try to add them
 yourself!
 
 
-File: gawk.info,  Node: Dynamic Extensions,  Next: Language History,  Prev: Debugger,  Up: Top
-
-15 Writing Extensions for `gawk'
-********************************
-
-This chapter is a placeholder, pending a rewrite for the new API.  Some
-of the old bits remain, since they can be partially reused.
-
-   It is possible to add new built-in functions to `gawk' using
-dynamically loaded libraries. This facility is available on systems
-(such as GNU/Linux) that support the C `dlopen()' and `dlsym()'
-functions.  This major node describes how to write and use dynamically
-loaded extensions for `gawk'.  Experience with programming in C or C++
-is necessary when reading this minor node.
-
-     NOTE: When `--sandbox' is specified, extensions are disabled
-     (*note Options::.
-
-* Menu:
-
-* Plugin License::              A note about licensing.
-* Sample Library::              A example of new functions.
-
-
-File: gawk.info,  Node: Plugin License,  Next: Sample Library,  Up: Dynamic Extensions
-
-15.1 Extension Licensing
-========================
-
-Every dynamic extension should define the global symbol
-`plugin_is_GPL_compatible' to assert that it has been licensed under a
-GPL-compatible license.  If this symbol does not exist, `gawk' will
-emit a fatal error and exit.
-
-   The declared type of the symbol should be `int'.  It does not need
-to be in any allocated section, though.  The code merely asserts that
-the symbol exists in the global scope.  Something like this is enough:
-
-     int plugin_is_GPL_compatible;
-
-
-File: gawk.info,  Node: Sample Library,  Prev: Plugin License,  Up: Dynamic Extensions
-
-15.2 Example: Directory and File Operation Built-ins
-====================================================
-
-Two useful functions that are not in `awk' are `chdir()' (so that an
-`awk' program can change its directory) and `stat()' (so that an `awk'
-program can gather information about a file).  This minor node
-implements these functions for `gawk' in an external extension library.
-
-* Menu:
-
-* Internal File Description::   What the new functions will do.
-* Internal File Ops::           The code for internal file operations.
-* Using Internal File Ops::     How to use an external extension.
-
-
-File: gawk.info,  Node: Internal File Description,  Next: Internal File Ops,  Up: Sample Library
-
-15.2.1 Using `chdir()' and `stat()'
------------------------------------
-
-This minor node shows how to use the new functions at the `awk' level
-once they've been integrated into the running `gawk' interpreter.
-Using `chdir()' is very straightforward. It takes one argument, the new
-directory to change to:
-
-     ...
-     newdir = "/home/arnold/funstuff"
-     ret = chdir(newdir)
-     if (ret < 0) {
-         printf("could not change to %s: %s\n",
-                        newdir, ERRNO) > "/dev/stderr"
-         exit 1
-     }
-     ...
-
-   The return value is negative if the `chdir' failed, and `ERRNO'
-(*note Built-in Variables::) is set to a string indicating the error.
-
-   Using `stat()' is a bit more complicated.  The C `stat()' function
-fills in a structure that has a fair amount of information.  The right
-way to model this in `awk' is to fill in an associative array with the
-appropriate information:
-
-     file = "/home/arnold/.profile"
-     fdata[1] = "x"    # force `fdata' to be an array
-     ret = stat(file, fdata)
-     if (ret < 0) {
-         printf("could not stat %s: %s\n",
-                  file, ERRNO) > "/dev/stderr"
-         exit 1
-     }
-     printf("size of %s is %d bytes\n", file, fdata["size"])
-
-   The `stat()' function always clears the data array, even if the
-`stat()' fails.  It fills in the following elements:
-
-`"name"'
-     The name of the file that was `stat()''ed.
-
-`"dev"'
-`"ino"'
-     The file's device and inode numbers, respectively.
-
-`"mode"'
-     The file's mode, as a numeric value. This includes both the file's
-     type and its permissions.
-
-`"nlink"'
-     The number of hard links (directory entries) the file has.
-
-`"uid"'
-`"gid"'
-     The numeric user and group ID numbers of the file's owner.
-
-`"size"'
-     The size in bytes of the file.
-
-`"blocks"'
-     The number of disk blocks the file actually occupies. This may not
-     be a function of the file's size if the file has holes.
-
-`"atime"'
-`"mtime"'
-`"ctime"'
-     The file's last access, modification, and inode update times,
-     respectively.  These are numeric timestamps, suitable for
-     formatting with `strftime()' (*note Built-in::).
-
-`"pmode"'
-     The file's "printable mode."  This is a string representation of
-     the file's type and permissions, such as what is produced by `ls
-     -l'--for example, `"drwxr-xr-x"'.
-
-`"type"'
-     A printable string representation of the file's type.  The value
-     is one of the following:
-
-    `"blockdev"'
-    `"chardev"'
-          The file is a block or character device ("special file").
-
-    `"directory"'
-          The file is a directory.
-
-    `"fifo"'
-          The file is a named-pipe (also known as a FIFO).
-
-    `"file"'
-          The file is just a regular file.
-
-    `"socket"'
-          The file is an `AF_UNIX' ("Unix domain") socket in the
-          filesystem.
-
-    `"symlink"'
-          The file is a symbolic link.
-
-   Several additional elements may be present depending upon the
-operating system and the type of the file.  You can test for them in
-your `awk' program by using the `in' operator (*note Reference to
-Elements::):
-
-`"blksize"'
-     The preferred block size for I/O to the file. This field is not
-     present on all POSIX-like systems in the C `stat' structure.
-
-`"linkval"'
-     If the file is a symbolic link, this element is the name of the
-     file the link points to (i.e., the value of the link).
-
-`"rdev"'
-`"major"'
-`"minor"'
-     If the file is a block or character device file, then these values
-     represent the numeric device number and the major and minor
-     components of that number, respectively.
-
-
-File: gawk.info,  Node: Internal File Ops,  Next: Using Internal File Ops,  Prev: Internal File Description,  Up: Sample Library
-
-15.2.2 C Code for `chdir()' and `stat()'
-----------------------------------------
-
-Here is the C code for these extensions.  They were written for
-GNU/Linux.  The code needs some more work for complete portability to
-other POSIX-compliant systems:(1)
-
-     #include "awk.h"
-
-     #include <sys/sysmacros.h>
-
-     int plugin_is_GPL_compatible;
-
-     /*  do_chdir --- provide dynamically loaded chdir() builtin for gawk */
-
-     static NODE *
-     do_chdir(int nargs)
-     {
-         NODE *newdir;
-         int ret = -1;
-
-         if (do_lint && nargs != 1)
-             lintwarn("chdir: called with incorrect number of arguments");
-
-         newdir = get_scalar_argument(0, FALSE);
-
-   The file includes the `"awk.h"' header file for definitions for the
-`gawk' internals.  It includes `<sys/sysmacros.h>' for access to the
-`major()' and `minor'() macros.
-
-   By convention, for an `awk' function `foo', the function that
-implements it is called `do_foo'.  The function should take a `int'
-argument, usually called `nargs', that represents the number of defined
-arguments for the function.  The `newdir' variable represents the new
-directory to change to, retrieved with `get_scalar_argument()'.  Note
-that the first argument is numbered zero.
-
-   This code actually accomplishes the `chdir()'. It first forces the
-argument to be a string and passes the string value to the `chdir()'
-system call. If the `chdir()' fails, `ERRNO' is updated.
-
-         (void) force_string(newdir);
-         ret = chdir(newdir->stptr);
-         if (ret < 0)
-             update_ERRNO_int(errno);
-
-   Finally, the function returns the return value to the `awk' level:
-
-         return make_number((AWKNUM) ret);
-     }
-
-   The `stat()' built-in is more involved.  First comes a function that
-turns a numeric mode into a printable representation (e.g., 644 becomes
-`-rw-r--r--'). This is omitted here for brevity:
-
-     /* format_mode --- turn a stat mode field into something readable */
-
-     static char *
-     format_mode(unsigned long fmode)
-     {
-         ...
-     }
-
-   Next comes the `do_stat()' function. It starts with variable
-declarations and argument checking:
-
-     /* do_stat --- provide a stat() function for gawk */
-
-     static NODE *
-     do_stat(int nargs)
-     {
-         NODE *file, *array, *tmp;
-         struct stat sbuf;
-         int ret;
-         NODE **aptr;
-         char *pmode;    /* printable mode */
-         char *type = "unknown";
-
-         if (do_lint && nargs > 2)
-             lintwarn("stat: called with too many arguments");
-
-   Then comes the actual work. First, the function gets the arguments.
-Then, it always clears the array.  The code use `lstat()' (instead of
-`stat()') to get the file information, in case the file is a symbolic
-link.  If there's an error, it sets `ERRNO' and returns:
-
-         /* file is first arg, array to hold results is second */
-         file = get_scalar_argument(0, FALSE);
-         array = get_array_argument(1, FALSE);
-
-         /* empty out the array */
-         assoc_clear(array);
-
-         /* lstat the file, if error, set ERRNO and return */
-         (void) force_string(file);
-         ret = lstat(file->stptr, & sbuf);
-         if (ret < 0) {
-             update_ERRNO_int(errno);
-             return make_number((AWKNUM) ret);
-         }
-
-   Now comes the tedious part: filling in the array.  Only a few of the
-calls are shown here, since they all follow the same pattern:
-
-         /* fill in the array */
-         aptr = assoc_lookup(array, tmp = make_string("name", 4));
-         *aptr = dupnode(file);
-         unref(tmp);
-
-         aptr = assoc_lookup(array, tmp = make_string("mode", 4));
-         *aptr = make_number((AWKNUM) sbuf.st_mode);
-         unref(tmp);
-
-         aptr = assoc_lookup(array, tmp = make_string("pmode", 5));
-         pmode = format_mode(sbuf.st_mode);
-         *aptr = make_string(pmode, strlen(pmode));
-         unref(tmp);
-
-   When done, return the `lstat()' return value:
-
-
-         return make_number((AWKNUM) ret);
-     }
-
-   Finally, it's necessary to provide the "glue" that loads the new
-function(s) into `gawk'.  By convention, each library has a routine
-named `dl_load()' that does the job.  The simplest way is to use the
-`dl_load_func' macro in `gawkapi.h'.
-
-   And that's it!  As an exercise, consider adding functions to
-implement system calls such as `chown()', `chmod()', and `umask()'.
-
-   ---------- Footnotes ----------
-
-   (1) This version is edited slightly for presentation.  See
-`extension/filefuncs.c' in the `gawk' distribution for the complete
-version.
-
-
-File: gawk.info,  Node: Using Internal File Ops,  Prev: Internal File Ops,  Up: Sample Library
-
-15.2.3 Integrating the Extensions
----------------------------------
-
-Now that the code is written, it must be possible to add it at runtime
-to the running `gawk' interpreter.  First, the code must be compiled.
-Assuming that the functions are in a file named `filefuncs.c', and IDIR
-is the location of the `gawk' include files, the following steps create
-a GNU/Linux shared library:
+File: gawk.info,  Node: Arbitrary Precision Arithmetic,  Next: Dynamic Extensions,  Prev: Debugger,  Up: Top
 
-     $ gcc -fPIC -shared -DHAVE_CONFIG_H -c -O -g -IIDIR filefuncs.c
-     $ ld -o filefuncs.so -shared filefuncs.o
-
-   Once the library exists, it is loaded by calling the `extension()'
-built-in function.  This function takes two arguments: the name of the
-library to load and the name of a function to call when the library is
-first loaded. This function adds the new functions to `gawk'.  It
-returns the value returned by the initialization function within the
-shared library:
-
-     # file testff.awk
-     BEGIN {
-         extension("./filefuncs.so", "dl_load")
-
-         chdir(".")  # no-op
-
-         data[1] = 1 # force `data' to be an array
-         print "Info for testff.awk"
-         ret = stat("testff.awk", data)
-         print "ret =", ret
-         for (i in data)
-             printf "data[\"%s\"] = %s\n", i, data[i]
-         print "testff.awk modified:",
-             strftime("%m %d %y %H:%M:%S", data["mtime"])
-
-         print "\nInfo for JUNK"
-         ret = stat("JUNK", data)
-         print "ret =", ret
-         for (i in data)
-             printf "data[\"%s\"] = %s\n", i, data[i]
-         print "JUNK modified:", strftime("%m %d %y %H:%M:%S", data["mtime"])
-     }
-
-   Here are the results of running the program:
-
-     $ gawk -f testff.awk
-     -| Info for testff.awk
-     -| ret = 0
-     -| data["size"] = 607
-     -| data["ino"] = 14945891
-     -| data["name"] = testff.awk
-     -| data["pmode"] = -rw-rw-r--
-     -| data["nlink"] = 1
-     -| data["atime"] = 1293993369
-     -| data["mtime"] = 1288520752
-     -| data["mode"] = 33204
-     -| data["blksize"] = 4096
-     -| data["dev"] = 2054
-     -| data["type"] = file
-     -| data["gid"] = 500
-     -| data["uid"] = 500
-     -| data["blocks"] = 8
-     -| data["ctime"] = 1290113572
-     -| testff.awk modified: 10 31 10 12:25:52
-     -|
-     -| Info for JUNK
-     -| ret = -1
-     -| JUNK modified: 01 01 70 02:00:00
-
-
-File: gawk.info,  Node: Arbitrary Precision Arithmetic,  Next: Advanced Features,  Prev: Internationalization,  Up: Top
-
-16 Arithmetic and Arbitrary Precision Arithmetic with `gawk'
+15 Arithmetic and Arbitrary Precision Arithmetic with `gawk'
 ************************************************************
 
      There's a credibility gap: We don't know how much of the
@@ -20470,7 +20080,7 @@ feature which is specific to `gawk'.
 
 File: gawk.info,  Node: General Arithmetic,  Next: Floating-point Programming,  Up: Arbitrary Precision Arithmetic
 
-16.1 A General Description of Computer Arithmetic
+15.1 A General Description of Computer Arithmetic
 =================================================
 
 Within computers, there are two kinds of numeric values: "integers" and
@@ -20506,7 +20116,7 @@ precision" floating-point numbers.
 
 File: gawk.info,  Node: Floating Point Issues,  Next: Integer Programming,  Up: General Arithmetic
 
-16.1.1 Floating-Point Number Caveats
+15.1.1 Floating-Point Number Caveats
 ------------------------------------
 
 As mentioned earlier, floating-point numbers represent what are called
@@ -20532,7 +20142,7 @@ in computer science.
 
 File: gawk.info,  Node: String Conversion Precision,  Next: Unexpected Results,  Up: Floating Point Issues
 
-16.1.1.1 The String Value Can Lie
+15.1.1.1 The String Value Can Lie
 .................................
 
 Internally, `awk' keeps both the numeric value (double precision
@@ -20584,7 +20194,7 @@ doubt that you need to worry about this.
 
 File: gawk.info,  Node: Unexpected Results,  Next: POSIX Floating Point Problems,  Prev: String Conversion Precision,  Up: Floating Point Issues
 
-16.1.1.2 Floating Point Numbers Are Not Abstract Numbers
+15.1.1.2 Floating Point Numbers Are Not Abstract Numbers
 ........................................................
 
 Unlike numbers in the abstract sense (such as what you studied in high
@@ -20638,7 +20248,7 @@ noted and can affect comparisons.
 
 File: gawk.info,  Node: POSIX Floating Point Problems,  Prev: Unexpected Results,  Up: Floating Point Issues
 
-16.1.1.3 Standards Versus Existing Practice
+15.1.1.3 Standards Versus Existing Practice
 ...........................................
 
 Historically, `awk' has converted any non-numeric looking string to the
@@ -20726,7 +20336,7 @@ as follows:
 
 File: gawk.info,  Node: Integer Programming,  Prev: Floating Point Issues,  Up: General Arithmetic
 
-16.1.2 Mixing Integers And Floating-point
+15.1.2 Mixing Integers And Floating-point
 -----------------------------------------
 
 As has been mentioned already, `gawk' ordinarily uses hardware double
@@ -20762,7 +20372,7 @@ around on your screen.
 
 File: gawk.info,  Node: Floating-point Programming,  Next: Gawk and MPFR,  Prev: General Arithmetic,  Up: Arbitrary Precision Arithmetic
 
-16.2 Understanding Floating-point Programming
+15.2 Understanding Floating-point Programming
 =============================================
 
 Numerical programming is an extensive area; if you need to develop
@@ -20922,7 +20532,7 @@ more information.
 
 File: gawk.info,  Node: Floating-point Representation,  Next: Floating-point Context,  Up: Floating-point Programming
 
-16.2.1 Binary Floating-point Representation
+15.2.1 Binary Floating-point Representation
 -------------------------------------------
 
 Although floating-point representations vary from machine to machine,
@@ -20951,7 +20561,7 @@ the first bit is always a one.
 
 File: gawk.info,  Node: Floating-point Context,  Next: Rounding Mode,  Prev: Floating-point Representation,  Up: Floating-point Programming
 
-16.2.2 Floating-point Context
+15.2.2 Floating-point Context
 -----------------------------
 
 A floating-point "context" defines the environment for arithmetic
@@ -20983,7 +20593,7 @@ Single         32             24             -126           +127
 Double         64             53             -1022          +1023
 Quadruple      128            113            -16382         +16383
 
-Table 16.1: Basic IEEE Format Context Values
+Table 15.1: Basic IEEE Format Context Values
 
      NOTE: The precision numbers include the implied leading one that
      gives them one extra bit of significand.
@@ -21007,7 +20617,7 @@ corresponding to 64-bit binary with 53 bits of precision.
 
 File: gawk.info,  Node: Rounding Mode,  Prev: Floating-point Context,  Up: Floating-point Programming
 
-16.2.3 Floating-point Rounding Mode
+15.2.3 Floating-point Rounding Mode
 -----------------------------------
 
 The "rounding mode" specifies the behavior for the results of numerical
@@ -21025,7 +20635,7 @@ Round toward zero                `roundTowardZero'
 Round to nearest, ties away      `roundTiesToAway'
 from zero                        
 
-Table 16.2: IEEE 754 Rounding Modes
+Table 15.2: IEEE 754 Rounding Modes
 
    The default mode `roundTiesToEven' is the most preferred, but the
 least intuitive. This method does the obvious thing for most values, by
@@ -21094,7 +20704,7 @@ to round halfway cases for `printf()'.
 
 File: gawk.info,  Node: Gawk and MPFR,  Next: Arbitrary Precision Floats,  Prev: Floating-point Programming,  Up: Arbitrary Precision Arithmetic
 
-16.3 `gawk' + MPFR = Powerful Arithmetic
+15.3 `gawk' + MPFR = Powerful Arithmetic
 ========================================
 
 The rest of this major node decsribes how to use the arbitrary precision
@@ -21124,7 +20734,7 @@ Auto-set::, for more information.
 
 File: gawk.info,  Node: Arbitrary Precision Floats,  Next: Arbitrary Precision Integers,  Prev: Gawk and MPFR,  Up: Arbitrary Precision Arithmetic
 
-16.4 Arbitrary Precision Floating-point Arithmetic with `gawk'
+15.4 Arbitrary Precision Floating-point Arithmetic with `gawk'
 ==============================================================
 
 `gawk' uses the GNU MPFR library for arbitrary precision floating-point
@@ -21177,7 +20787,7 @@ and subnormal numbers are not implemented.
 
 File: gawk.info,  Node: Setting Precision,  Next: Setting Rounding Mode,  Up: Arbitrary Precision Floats
 
-16.4.1 Setting the Working Precision
+15.4.1 Setting the Working Precision
 ------------------------------------
 
 `gawk' uses a global working precision; it does not keep track of the
@@ -21239,7 +20849,7 @@ issues that occur because numbers are stored internally in binary.
 
 File: gawk.info,  Node: Setting Rounding Mode,  Next: Floating-point Constants,  Prev: Setting Precision,  Up: Arbitrary Precision Floats
 
-16.4.2 Setting the Rounding Mode
+15.4.2 Setting the Rounding Mode
 --------------------------------
 
 The `ROUNDMODE' variable provides program level control over the
@@ -21255,11 +20865,11 @@ Round toward zero                `roundTowardZero'      `"Z"' or `"z"'
 Round to nearest, ties away      `roundTiesToAway'      `"A"' or `"a"'
 from zero                                               
 
-Table 16.3: `gawk' Rounding Modes
+Table 15.3: `gawk' Rounding Modes
 
    `ROUNDMODE' has the default value `"N"', which selects the IEEE-754
 rounding mode `roundTiesToEven'.  Besides the values listed in *note
-Table 16.3: table-gawk-rounding-modes, `gawk' also accepts `"A"' to
+Table 15.3: table-gawk-rounding-modes, `gawk' also accepts `"A"' to
 select the IEEE-754 mode `roundTiesToAway' if your version of the MPFR
 library supports it; otherwise setting `ROUNDMODE' to this value has no
 effect. *Note Rounding Mode::, for the meanings of the various rounding
@@ -21274,7 +20884,7 @@ modes.
 
 File: gawk.info,  Node: Floating-point Constants,  Next: Changing Precision,  Prev: Setting Rounding Mode,  Up: Arbitrary Precision Floats
 
-16.4.3 Representing Floating-point Constants
+15.4.3 Representing Floating-point Constants
 --------------------------------------------
 
 Be wary of floating-point constants! When reading a floating-point
@@ -21304,7 +20914,7 @@ of 53.
 
 File: gawk.info,  Node: Changing Precision,  Next: Exact Arithmetic,  Prev: Floating-point Constants,  Up: Arbitrary Precision Floats
 
-16.4.4 Changing the Precision of a Number
+15.4.4 Changing the Precision of a Number
 -----------------------------------------
 
      The point is that in any variable-precision package, a decision is
@@ -21343,7 +20953,7 @@ Volume 28, pp. 168-173, 2008.
 
 File: gawk.info,  Node: Exact Arithmetic,  Prev: Changing Precision,  Up: Arbitrary Precision Floats
 
-16.4.5 Exact Arithmetic with Floating-point Numbers
+15.4.5 Exact Arithmetic with Floating-point Numbers
 ---------------------------------------------------
 
      CAUTION: Never depend on the exactness of floating-point
@@ -21414,7 +21024,7 @@ hand is often the correct approach in such situations.
 
 File: gawk.info,  Node: Arbitrary Precision Integers,  Prev: Arbitrary Precision Floats,  Up: Arbitrary Precision Arithmetic
 
-16.5 Arbitrary Precision Integer Arithmetic with `gawk'
+15.5 Arbitrary Precision Integer Arithmetic with `gawk'
 =======================================================
 
 If the option `--bignum' or `-M' is specified, `gawk' performs all
@@ -21489,6 +21099,399 @@ Wolfram Web Resource.
 `http://mathworld.wolfram.com/SylvestersSequence.html'
 
 
+File: gawk.info,  Node: Dynamic Extensions,  Next: Language History,  Prev: Arbitrary Precision Arithmetic,  Up: Top
+
+16 Writing Extensions for `gawk'
+********************************
+
+This chapter is a placeholder, pending a rewrite for the new API.  Some
+of the old bits remain, since they can be partially reused.
+
+   It is possible to add new built-in functions to `gawk' using
+dynamically loaded libraries. This facility is available on systems
+(such as GNU/Linux) that support the C `dlopen()' and `dlsym()'
+functions.  This major node describes how to write and use dynamically
+loaded extensions for `gawk'.  Experience with programming in C or C++
+is necessary when reading this minor node.
+
+     NOTE: When `--sandbox' is specified, extensions are disabled
+     (*note Options::.
+
+* Menu:
+
+* Plugin License::              A note about licensing.
+* Sample Library::              A example of new functions.
+
+
+File: gawk.info,  Node: Plugin License,  Next: Sample Library,  Up: Dynamic Extensions
+
+16.1 Extension Licensing
+========================
+
+Every dynamic extension should define the global symbol
+`plugin_is_GPL_compatible' to assert that it has been licensed under a
+GPL-compatible license.  If this symbol does not exist, `gawk' will
+emit a fatal error and exit.
+
+   The declared type of the symbol should be `int'.  It does not need
+to be in any allocated section, though.  The code merely asserts that
+the symbol exists in the global scope.  Something like this is enough:
+
+     int plugin_is_GPL_compatible;
+
+
+File: gawk.info,  Node: Sample Library,  Prev: Plugin License,  Up: Dynamic Extensions
+
+16.2 Example: Directory and File Operation Built-ins
+====================================================
+
+Two useful functions that are not in `awk' are `chdir()' (so that an
+`awk' program can change its directory) and `stat()' (so that an `awk'
+program can gather information about a file).  This minor node
+implements these functions for `gawk' in an external extension library.
+
+* Menu:
+
+* Internal File Description::   What the new functions will do.
+* Internal File Ops::           The code for internal file operations.
+* Using Internal File Ops::     How to use an external extension.
+
+
+File: gawk.info,  Node: Internal File Description,  Next: Internal File Ops,  Up: Sample Library
+
+16.2.1 Using `chdir()' and `stat()'
+-----------------------------------
+
+This minor node shows how to use the new functions at the `awk' level
+once they've been integrated into the running `gawk' interpreter.
+Using `chdir()' is very straightforward. It takes one argument, the new
+directory to change to:
+
+     ...
+     newdir = "/home/arnold/funstuff"
+     ret = chdir(newdir)
+     if (ret < 0) {
+         printf("could not change to %s: %s\n",
+                        newdir, ERRNO) > "/dev/stderr"
+         exit 1
+     }
+     ...
+
+   The return value is negative if the `chdir' failed, and `ERRNO'
+(*note Built-in Variables::) is set to a string indicating the error.
+
+   Using `stat()' is a bit more complicated.  The C `stat()' function
+fills in a structure that has a fair amount of information.  The right
+way to model this in `awk' is to fill in an associative array with the
+appropriate information:
+
+     file = "/home/arnold/.profile"
+     fdata[1] = "x"    # force `fdata' to be an array
+     ret = stat(file, fdata)
+     if (ret < 0) {
+         printf("could not stat %s: %s\n",
+                  file, ERRNO) > "/dev/stderr"
+         exit 1
+     }
+     printf("size of %s is %d bytes\n", file, fdata["size"])
+
+   The `stat()' function always clears the data array, even if the
+`stat()' fails.  It fills in the following elements:
+
+`"name"'
+     The name of the file that was `stat()''ed.
+
+`"dev"'
+`"ino"'
+     The file's device and inode numbers, respectively.
+
+`"mode"'
+     The file's mode, as a numeric value. This includes both the file's
+     type and its permissions.
+
+`"nlink"'
+     The number of hard links (directory entries) the file has.
+
+`"uid"'
+`"gid"'
+     The numeric user and group ID numbers of the file's owner.
+
+`"size"'
+     The size in bytes of the file.
+
+`"blocks"'
+     The number of disk blocks the file actually occupies. This may not
+     be a function of the file's size if the file has holes.
+
+`"atime"'
+`"mtime"'
+`"ctime"'
+     The file's last access, modification, and inode update times,
+     respectively.  These are numeric timestamps, suitable for
+     formatting with `strftime()' (*note Built-in::).
+
+`"pmode"'
+     The file's "printable mode."  This is a string representation of
+     the file's type and permissions, such as what is produced by `ls
+     -l'--for example, `"drwxr-xr-x"'.
+
+`"type"'
+     A printable string representation of the file's type.  The value
+     is one of the following:
+
+    `"blockdev"'
+    `"chardev"'
+          The file is a block or character device ("special file").
+
+    `"directory"'
+          The file is a directory.
+
+    `"fifo"'
+          The file is a named-pipe (also known as a FIFO).
+
+    `"file"'
+          The file is just a regular file.
+
+    `"socket"'
+          The file is an `AF_UNIX' ("Unix domain") socket in the
+          filesystem.
+
+    `"symlink"'
+          The file is a symbolic link.
+
+   Several additional elements may be present depending upon the
+operating system and the type of the file.  You can test for them in
+your `awk' program by using the `in' operator (*note Reference to
+Elements::):
+
+`"blksize"'
+     The preferred block size for I/O to the file. This field is not
+     present on all POSIX-like systems in the C `stat' structure.
+
+`"linkval"'
+     If the file is a symbolic link, this element is the name of the
+     file the link points to (i.e., the value of the link).
+
+`"rdev"'
+`"major"'
+`"minor"'
+     If the file is a block or character device file, then these values
+     represent the numeric device number and the major and minor
+     components of that number, respectively.
+
+
+File: gawk.info,  Node: Internal File Ops,  Next: Using Internal File Ops,  Prev: Internal File Description,  Up: Sample Library
+
+16.2.2 C Code for `chdir()' and `stat()'
+----------------------------------------
+
+Here is the C code for these extensions.  They were written for
+GNU/Linux.  The code needs some more work for complete portability to
+other POSIX-compliant systems:(1)
+
+     #include "awk.h"
+
+     #include <sys/sysmacros.h>
+
+     int plugin_is_GPL_compatible;
+
+     /*  do_chdir --- provide dynamically loaded chdir() builtin for gawk */
+
+     static NODE *
+     do_chdir(int nargs)
+     {
+         NODE *newdir;
+         int ret = -1;
+
+         if (do_lint && nargs != 1)
+             lintwarn("chdir: called with incorrect number of arguments");
+
+         newdir = get_scalar_argument(0, FALSE);
+
+   The file includes the `"awk.h"' header file for definitions for the
+`gawk' internals.  It includes `<sys/sysmacros.h>' for access to the
+`major()' and `minor'() macros.
+
+   By convention, for an `awk' function `foo', the function that
+implements it is called `do_foo'.  The function should take a `int'
+argument, usually called `nargs', that represents the number of defined
+arguments for the function.  The `newdir' variable represents the new
+directory to change to, retrieved with `get_scalar_argument()'.  Note
+that the first argument is numbered zero.
+
+   This code actually accomplishes the `chdir()'. It first forces the
+argument to be a string and passes the string value to the `chdir()'
+system call. If the `chdir()' fails, `ERRNO' is updated.
+
+         (void) force_string(newdir);
+         ret = chdir(newdir->stptr);
+         if (ret < 0)
+             update_ERRNO_int(errno);
+
+   Finally, the function returns the return value to the `awk' level:
+
+         return make_number((AWKNUM) ret);
+     }
+
+   The `stat()' built-in is more involved.  First comes a function that
+turns a numeric mode into a printable representation (e.g., 644 becomes
+`-rw-r--r--'). This is omitted here for brevity:
+
+     /* format_mode --- turn a stat mode field into something readable */
+
+     static char *
+     format_mode(unsigned long fmode)
+     {
+         ...
+     }
+
+   Next comes the `do_stat()' function. It starts with variable
+declarations and argument checking:
+
+     /* do_stat --- provide a stat() function for gawk */
+
+     static NODE *
+     do_stat(int nargs)
+     {
+         NODE *file, *array, *tmp;
+         struct stat sbuf;
+         int ret;
+         NODE **aptr;
+         char *pmode;    /* printable mode */
+         char *type = "unknown";
+
+         if (do_lint && nargs > 2)
+             lintwarn("stat: called with too many arguments");
+
+   Then comes the actual work. First, the function gets the arguments.
+Then, it always clears the array.  The code use `lstat()' (instead of
+`stat()') to get the file information, in case the file is a symbolic
+link.  If there's an error, it sets `ERRNO' and returns:
+
+         /* file is first arg, array to hold results is second */
+         file = get_scalar_argument(0, FALSE);
+         array = get_array_argument(1, FALSE);
+
+         /* empty out the array */
+         assoc_clear(array);
+
+         /* lstat the file, if error, set ERRNO and return */
+         (void) force_string(file);
+         ret = lstat(file->stptr, & sbuf);
+         if (ret < 0) {
+             update_ERRNO_int(errno);
+             return make_number((AWKNUM) ret);
+         }
+
+   Now comes the tedious part: filling in the array.  Only a few of the
+calls are shown here, since they all follow the same pattern:
+
+         /* fill in the array */
+         aptr = assoc_lookup(array, tmp = make_string("name", 4));
+         *aptr = dupnode(file);
+         unref(tmp);
+
+         aptr = assoc_lookup(array, tmp = make_string("mode", 4));
+         *aptr = make_number((AWKNUM) sbuf.st_mode);
+         unref(tmp);
+
+         aptr = assoc_lookup(array, tmp = make_string("pmode", 5));
+         pmode = format_mode(sbuf.st_mode);
+         *aptr = make_string(pmode, strlen(pmode));
+         unref(tmp);
+
+   When done, return the `lstat()' return value:
+
+
+         return make_number((AWKNUM) ret);
+     }
+
+   Finally, it's necessary to provide the "glue" that loads the new
+function(s) into `gawk'.  By convention, each library has a routine
+named `dl_load()' that does the job.  The simplest way is to use the
+`dl_load_func' macro in `gawkapi.h'.
+
+   And that's it!  As an exercise, consider adding functions to
+implement system calls such as `chown()', `chmod()', and `umask()'.
+
+   ---------- Footnotes ----------
+
+   (1) This version is edited slightly for presentation.  See
+`extension/filefuncs.c' in the `gawk' distribution for the complete
+version.
+
+
+File: gawk.info,  Node: Using Internal File Ops,  Prev: Internal File Ops,  Up: Sample Library
+
+16.2.3 Integrating the Extensions
+---------------------------------
+
+Now that the code is written, it must be possible to add it at runtime
+to the running `gawk' interpreter.  First, the code must be compiled.
+Assuming that the functions are in a file named `filefuncs.c', and IDIR
+is the location of the `gawk' include files, the following steps create
+a GNU/Linux shared library:
+
+     $ gcc -fPIC -shared -DHAVE_CONFIG_H -c -O -g -IIDIR filefuncs.c
+     $ ld -o filefuncs.so -shared filefuncs.o
+
+   Once the library exists, it is loaded by calling the `extension()'
+built-in function.  This function takes two arguments: the name of the
+library to load and the name of a function to call when the library is
+first loaded. This function adds the new functions to `gawk'.  It
+returns the value returned by the initialization function within the
+shared library:
+
+     # file testff.awk
+     BEGIN {
+         extension("./filefuncs.so", "dl_load")
+
+         chdir(".")  # no-op
+
+         data[1] = 1 # force `data' to be an array
+         print "Info for testff.awk"
+         ret = stat("testff.awk", data)
+         print "ret =", ret
+         for (i in data)
+             printf "data[\"%s\"] = %s\n", i, data[i]
+         print "testff.awk modified:",
+             strftime("%m %d %y %H:%M:%S", data["mtime"])
+
+         print "\nInfo for JUNK"
+         ret = stat("JUNK", data)
+         print "ret =", ret
+         for (i in data)
+             printf "data[\"%s\"] = %s\n", i, data[i]
+         print "JUNK modified:", strftime("%m %d %y %H:%M:%S", data["mtime"])
+     }
+
+   Here are the results of running the program:
+
+     $ gawk -f testff.awk
+     -| Info for testff.awk
+     -| ret = 0
+     -| data["size"] = 607
+     -| data["ino"] = 14945891
+     -| data["name"] = testff.awk
+     -| data["pmode"] = -rw-rw-r--
+     -| data["nlink"] = 1
+     -| data["atime"] = 1293993369
+     -| data["mtime"] = 1288520752
+     -| data["mode"] = 33204
+     -| data["blksize"] = 4096
+     -| data["dev"] = 2054
+     -| data["type"] = file
+     -| data["gid"] = 500
+     -| data["uid"] = 500
+     -| data["blocks"] = 8
+     -| data["ctime"] = 1290113572
+     -| testff.awk modified: 10 31 10 12:25:52
+     -|
+     -| Info for JUNK
+     -| ret = -1
+     -| JUNK modified: 01 01 70 02:00:00
+
+
 File: gawk.info,  Node: Language History,  Next: Installation,  Prev: Dynamic Extensions,  Up: Top
 
 Appendix A The Evolution of the `awk' Language
@@ -28429,441 +28432,441 @@ Node: History39607
 Node: Names41998
 Ref: Names-Footnote-143475
 Node: This Manual43547
-Ref: This Manual-Footnote-148556
-Node: Conventions48656
-Node: Manual History50790
-Ref: Manual History-Footnote-154060
-Ref: Manual History-Footnote-254101
-Node: How To Contribute54175
-Node: Acknowledgments55319
-Node: Getting Started59815
-Node: Running gawk62194
-Node: One-shot63380
-Node: Read Terminal64605
-Ref: Read Terminal-Footnote-166255
-Ref: Read Terminal-Footnote-266531
-Node: Long66702
-Node: Executable Scripts68078
-Ref: Executable Scripts-Footnote-169947
-Ref: Executable Scripts-Footnote-270049
-Node: Comments70596
-Node: Quoting73063
-Node: DOS Quoting77686
-Node: Sample Data Files78361
-Node: Very Simple81393
-Node: Two Rules85992
-Node: More Complex88139
-Ref: More Complex-Footnote-191069
-Node: Statements/Lines91154
-Ref: Statements/Lines-Footnote-195616
-Node: Other Features95881
-Node: When96809
-Node: Invoking Gawk98956
-Node: Command Line100417
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+Ref: Passwd Functions-Footnote-1658558
+Node: Group Functions658646
+Node: Walking Arrays666730
+Node: Sample Programs668299
+Node: Running Examples668964
+Node: Clones669692
+Node: Cut Program670916
+Node: Egrep Program680761
+Ref: Egrep Program-Footnote-1688534
+Node: Id Program688644
+Node: Split Program692260
+Ref: Split Program-Footnote-1695779
+Node: Tee Program695907
+Node: Uniq Program698710
+Node: Wc Program706139
+Ref: Wc Program-Footnote-1710405
+Ref: Wc Program-Footnote-2710605
+Node: Miscellaneous Programs710697
+Node: Dupword Program711885
+Node: Alarm Program713916
+Node: Translate Program718665
+Ref: Translate Program-Footnote-1723052
+Ref: Translate Program-Footnote-2723280
+Node: Labels Program723414
+Ref: Labels Program-Footnote-1726785
+Node: Word Sorting726869
+Node: History Sorting730753
+Node: Extract Program732592
+Ref: Extract Program-Footnote-1740075
+Node: Simple Sed740203
+Node: Igawk Program743265
+Ref: Igawk Program-Footnote-1758422
+Ref: Igawk Program-Footnote-2758623
+Node: Anagram Program758761
+Node: Signature Program761829
+Node: Debugger762929
+Node: Debugging763895
+Node: Debugging Concepts764328
+Node: Debugging Terms766184
+Node: Awk Debugging768781
+Node: Sample Debugging Session769673
+Node: Debugger Invocation770193
+Node: Finding The Bug771522
+Node: List of Debugger Commands778010
+Node: Breakpoint Control779344
+Node: Debugger Execution Control783008
+Node: Viewing And Changing Data786368
+Node: Execution Stack789724
+Node: Debugger Info791191
+Node: Miscellaneous Debugger Commands795172
+Node: Readline Support800617
+Node: Limitations801448
+Node: Arbitrary Precision Arithmetic803700
+Ref: Arbitrary Precision Arithmetic-Footnote-1805341
+Node: General Arithmetic805489
+Node: Floating Point Issues807209
+Node: String Conversion Precision808304
+Ref: String Conversion Precision-Footnote-1810010
+Node: Unexpected Results810119
+Node: POSIX Floating Point Problems812272
+Ref: POSIX Floating Point Problems-Footnote-1816097
+Node: Integer Programming816135
+Node: Floating-point Programming817883
+Ref: Floating-point Programming-Footnote-1824147
+Node: Floating-point Representation824411
+Node: Floating-point Context825578
+Ref: table-ieee-formats826420
+Node: Rounding Mode827804
+Ref: table-rounding-modes828283
+Ref: Rounding Mode-Footnote-1831287
+Node: Gawk and MPFR831468
+Node: Arbitrary Precision Floats832709
+Ref: Arbitrary Precision Floats-Footnote-1835131
+Node: Setting Precision835442
+Node: Setting Rounding Mode838169
+Ref: table-gawk-rounding-modes838573
+Node: Floating-point Constants839770
+Node: Changing Precision841192
+Ref: Changing Precision-Footnote-1842592
+Node: Exact Arithmetic842766
+Node: Arbitrary Precision Integers845864
+Ref: Arbitrary Precision Integers-Footnote-1848946
+Node: Dynamic Extensions849093
+Node: Plugin License850011
+Node: Sample Library850625
+Node: Internal File Description851309
+Node: Internal File Ops855022
+Ref: Internal File Ops-Footnote-1859585
+Node: Using Internal File Ops859725
+Node: Language History862101
+Node: V7/SVR3.1863623
+Node: SVR4865944
+Node: POSIX867386
+Node: BTL868394
+Node: POSIX/GNU869128
+Node: Common Extensions874663
+Node: Ranges and Locales875770
+Ref: Ranges and Locales-Footnote-1880388
+Ref: Ranges and Locales-Footnote-2880415
+Ref: Ranges and Locales-Footnote-3880675
+Node: Contributors880896
+Node: Installation885192
+Node: Gawk Distribution886086
+Node: Getting886570
+Node: Extracting887396
+Node: Distribution contents889088
+Node: Unix Installation894310
+Node: Quick Installation894927
+Node: Additional Configuration Options896889
+Node: Configuration Philosophy898366
+Node: Non-Unix Installation900708
+Node: PC Installation901166
+Node: PC Binary Installation902465
+Node: PC Compiling904313
+Node: PC Testing907257
+Node: PC Using908433
+Node: Cygwin912618
+Node: MSYS913618
+Node: VMS Installation914132
+Node: VMS Compilation914735
+Ref: VMS Compilation-Footnote-1915742
+Node: VMS Installation Details915800
+Node: VMS Running917435
+Node: VMS Old Gawk919042
+Node: Bugs919516
+Node: Other Versions923368
+Node: Notes928683
+Node: Compatibility Mode929270
+Node: Additions930053
+Node: Accessing The Source930980
+Node: Adding Code932405
+Node: New Ports938413
+Node: Derived Files942548
+Ref: Derived Files-Footnote-1947852
+Ref: Derived Files-Footnote-2947886
+Ref: Derived Files-Footnote-3948486
+Node: Future Extensions948584
+Node: Basic Concepts950071
+Node: Basic High Level950752
+Ref: Basic High Level-Footnote-1954787
+Node: Basic Data Typing954972
+Node: Glossary958327
+Node: Copying983303
+Node: GNU Free Documentation License1020860
+Node: Index1045997
 
 End Tag Table
diff --git a/test/ChangeLog b/test/ChangeLog
index 5414bfce..680954ed 100644
--- a/test/ChangeLog
+++ b/test/ChangeLog
@@ -1,3 +1,9 @@
+2012-08-26         Arnold D. Robbins     <arnold@skeeve.com>
+
+	* Makefile.am (charasbytes): Revise test to canonicalize
+	whitespace. (For Mac OS X 10.5, at least.)
+	* charasbytes.ok: Updated.
+
 2012-08-23         Arnold D. Robbins     <arnold@skeeve.com>
 
 	* Makefile.am (revout, revtwoway): New tests.
diff --git a/test/Makefile.am b/test/Makefile.am
index ef833ef4..5f62852d 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -1661,7 +1661,7 @@ charasbytes:
 	@echo $@
 	@[ -z "$$GAWKLOCALE" ] && GAWKLOCALE=en_US.UTF-8; \
 	AWKPATH=$(srcdir) $(AWK) -b -f $@.awk $(srcdir)/$@.in | \
-	od -c -t x1 >_$@ 2>&1 || echo EXIT CODE: $$? >>_$@
+	od -c -t x1 | sed -e 's/  */ /g' -e 's/ *$$//' >_$@ 2>&1 || echo EXIT CODE: $$? >>_$@
 	@-$(CMP) $(srcdir)/$@.ok _$@ && rm -f _$@
 
 # Targets generated for other tests:
diff --git a/test/Makefile.in b/test/Makefile.in
index c4b1bb60..35c7b201 100644
--- a/test/Makefile.in
+++ b/test/Makefile.in
@@ -2043,7 +2043,7 @@ charasbytes:
 	@echo $@
 	@[ -z "$$GAWKLOCALE" ] && GAWKLOCALE=en_US.UTF-8; \
 	AWKPATH=$(srcdir) $(AWK) -b -f $@.awk $(srcdir)/$@.in | \
-	od -c -t x1 >_$@ 2>&1 || echo EXIT CODE: $$? >>_$@
+	od -c -t x1 | sed -e 's/  */ /g' -e 's/ *$$//' >_$@ 2>&1 || echo EXIT CODE: $$? >>_$@
 	@-$(CMP) $(srcdir)/$@.ok _$@ && rm -f _$@
 Gt-dummy:
 # file Maketests, generated from Makefile.am by the Gentests program
diff --git a/test/charasbytes.ok b/test/charasbytes.ok
index a1702e64..f60f2ab4 100644
--- a/test/charasbytes.ok
+++ b/test/charasbytes.ok
@@ -1,3 +1,3 @@
-0000000   Z   Z   Z  \n
-         5a  5a  5a  0a
+0000000 Z Z Z \n
+ 5a 5a 5a 0a
 0000004