Add builtin functions to FUNCTAB and PROCINFO["identifiers"] and doc.

15 files changed, 548 insertions, 424 deletions

diff --git a/ChangeLog b/ChangeLog
index 12ea2778..569fc039 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,19 @@
+2014-09-05         Arnold D. Robbins     <arnold@skeeve.com>
+
+	Add builtin functions to FUNCTAB for consistency.
+
+	* awk.h (Node_builtin_func): New node type.
+	(install_builtins): Declare new function.
+	* awkgram.y [DEBUG_USE]: New flag value for debug functions; they
+	don't go into FUNCTAB.
+	(install_builtins): New function.
+	* eval.c (nodetypes): Add Node_builtin_func.
+	* interpret.h (r_interpret): Rework indirect calls of built-ins
+	since they're now in the symbol table.
+	* main.c (main): Call `install_builtins'.
+	* symbol.c (install): Adjust for Node_builtin_func.
+	(load_symbols): Ditto.
+
 2014-09-04         Arnold D. Robbins     <arnold@skeeve.com>
 
 	* profile.c (pprint): Case Op_K_for: Improve printing of
diff --git a/awk.h b/awk.h
index 60e40d11..4f39ffcf 100644
--- a/awk.h
+++ b/awk.h
@@ -297,6 +297,7 @@ typedef enum nodevals {
 	Node_func,		/* lnode is param. list, rnode is body */
 	Node_ext_func,		/* extension function, code_ptr is builtin code */
 	Node_old_ext_func,	/* extension function, code_ptr is builtin code */
+	Node_builtin_func,	/* built-in function, main use is for FUNCTAB */
 
 	Node_array_ref,		/* array passed by ref as parameter */
 	Node_array_tree,	/* Hashed array tree (HAT) */
@@ -1379,6 +1380,7 @@ extern void valinfo(NODE *n, Func_print print_func, FILE *fp);
 extern void negate_num(NODE *n);
 typedef NODE *(*builtin_func_t)(int);	/* function that implements a built-in */
 extern builtin_func_t lookup_builtin(const char *name);
+extern void install_builtins(void);
 /* builtin.c */
 extern double double_to_int(double d);
 extern NODE *do_exp(int nargs);
diff --git a/awkgram.c b/awkgram.c
index 4bb2fc17..0bf2e5f3 100644
--- a/awkgram.c
+++ b/awkgram.c
@@ -4144,6 +4144,7 @@ struct token {
 #	define	GAWKX		0x0400	/* gawk extension */
 #	define	BREAK		0x0800	/* break allowed inside */
 #	define	CONTINUE	0x1000	/* continue allowed inside */
+#	define	DEBUG_USE	0x2000	/* for use by developers */
 	
 	NODE *(*ptr)(int);	/* function that implements this keyword */
 	NODE *(*ptr2)(int);	/* alternate arbitrary-precision function */
@@ -4182,7 +4183,7 @@ static const struct token tokentab[] = {
 {"END",		Op_rule,	 LEX_END,	0,		0,	0},
 {"ENDFILE",		Op_rule,	 LEX_ENDFILE,	GAWKX,		0,	0},
 #ifdef ARRAYDEBUG
-{"adump",	Op_builtin,    LEX_BUILTIN,	GAWKX|A(1)|A(2),	do_adump,	0},
+{"adump",	Op_builtin,    LEX_BUILTIN,	GAWKX|A(1)|A(2)|DEBUG_USE,	do_adump,	0},
 #endif
 {"and",		Op_builtin,    LEX_BUILTIN,	GAWKX,		do_and,	MPF(and)},
 {"asort",	Op_builtin,	 LEX_BUILTIN,	GAWKX|A(1)|A(2)|A(3),	do_asort,	0},
@@ -4241,7 +4242,7 @@ static const struct token tokentab[] = {
 {"sqrt",	Op_builtin,	 LEX_BUILTIN,	A(1),		do_sqrt,	MPF(sqrt)},
 {"srand",	Op_builtin,	 LEX_BUILTIN,	NOT_OLD|A(0)|A(1), do_srand,	MPF(srand)},
 #if defined(GAWKDEBUG) || defined(ARRAYDEBUG) /* || ... */
-{"stopme",	Op_builtin,	LEX_BUILTIN,	GAWKX|A(0),	stopme,		0},
+{"stopme",	Op_builtin,	LEX_BUILTIN,	GAWKX|A(0)|DEBUG_USE,	stopme,		0},
 #endif
 {"strftime",	Op_builtin,	 LEX_BUILTIN,	GAWKX|A(0)|A(1)|A(2)|A(3), do_strftime,	0},
 {"strtonum",	Op_builtin,    LEX_BUILTIN,	GAWKX|A(1),	do_strtonum, MPF(strtonum)},
@@ -8060,3 +8061,19 @@ lookup_builtin(const char *name)
 
 	return tokentab[mid].ptr;
 }
+
+/* install_builtins --- add built-in functions to FUNCTAB */
+
+void
+install_builtins(void)
+{
+	int i, j;
+
+	j = sizeof(tokentab) / sizeof(tokentab[0]);
+	for (i = 0; i < j; i++) {
+		if (    tokentab[i].class == LEX_BUILTIN
+		    && (tokentab[i].flags & DEBUG_USE) == 0) {
+			(void) install_symbol(tokentab[i].operator, Node_builtin_func);
+		}
+	}
+}
diff --git a/awkgram.y b/awkgram.y
index a0dfc550..6500d1f5 100644
--- a/awkgram.y
+++ b/awkgram.y
@@ -1805,6 +1805,7 @@ struct token {
 #	define	GAWKX		0x0400	/* gawk extension */
 #	define	BREAK		0x0800	/* break allowed inside */
 #	define	CONTINUE	0x1000	/* continue allowed inside */
+#	define	DEBUG_USE	0x2000	/* for use by developers */
 	
 	NODE *(*ptr)(int);	/* function that implements this keyword */
 	NODE *(*ptr2)(int);	/* alternate arbitrary-precision function */
@@ -1843,7 +1844,7 @@ static const struct token tokentab[] = {
 {"END",		Op_rule,	 LEX_END,	0,		0,	0},
 {"ENDFILE",		Op_rule,	 LEX_ENDFILE,	GAWKX,		0,	0},
 #ifdef ARRAYDEBUG
-{"adump",	Op_builtin,    LEX_BUILTIN,	GAWKX|A(1)|A(2),	do_adump,	0},
+{"adump",	Op_builtin,    LEX_BUILTIN,	GAWKX|A(1)|A(2)|DEBUG_USE,	do_adump,	0},
 #endif
 {"and",		Op_builtin,    LEX_BUILTIN,	GAWKX,		do_and,	MPF(and)},
 {"asort",	Op_builtin,	 LEX_BUILTIN,	GAWKX|A(1)|A(2)|A(3),	do_asort,	0},
@@ -1902,7 +1903,7 @@ static const struct token tokentab[] = {
 {"sqrt",	Op_builtin,	 LEX_BUILTIN,	A(1),		do_sqrt,	MPF(sqrt)},
 {"srand",	Op_builtin,	 LEX_BUILTIN,	NOT_OLD|A(0)|A(1), do_srand,	MPF(srand)},
 #if defined(GAWKDEBUG) || defined(ARRAYDEBUG) /* || ... */
-{"stopme",	Op_builtin,	LEX_BUILTIN,	GAWKX|A(0),	stopme,		0},
+{"stopme",	Op_builtin,	LEX_BUILTIN,	GAWKX|A(0)|DEBUG_USE,	stopme,		0},
 #endif
 {"strftime",	Op_builtin,	 LEX_BUILTIN,	GAWKX|A(0)|A(1)|A(2)|A(3), do_strftime,	0},
 {"strtonum",	Op_builtin,    LEX_BUILTIN,	GAWKX|A(1),	do_strtonum, MPF(strtonum)},
@@ -5721,3 +5722,19 @@ lookup_builtin(const char *name)
 
 	return tokentab[mid].ptr;
 }
+
+/* install_builtins --- add built-in functions to FUNCTAB */
+
+void
+install_builtins(void)
+{
+	int i, j;
+
+	j = sizeof(tokentab) / sizeof(tokentab[0]);
+	for (i = 0; i < j; i++) {
+		if (    tokentab[i].class == LEX_BUILTIN
+		    && (tokentab[i].flags & DEBUG_USE) == 0) {
+			(void) install_symbol(tokentab[i].operator, Node_builtin_func);
+		}
+	}
+}
diff --git a/doc/ChangeLog b/doc/ChangeLog
index 457ac8ed..661237db 100644
--- a/doc/ChangeLog
+++ b/doc/ChangeLog
@@ -1,3 +1,9 @@
+2014-09-05         Arnold D. Robbins     <arnold@skeeve.com>
+
+	* gawktexi.in: Document builtin functions in FUNCTAB and in
+	PROCINFO["identifiers"].
+	* gawk.1: Ditto.
+
 2014-09-04         Arnold D. Robbins     <arnold@skeeve.com>
 
 	* gawktexi.in: Document that indirect calls now work on built-in
@@ -11,8 +17,7 @@
 2014-09-02         Arnold D. Robbins     <arnold@skeeve.com>
 
 	* gawktexi.in: Corrections to walkthrough in debugger chapter.
-	Thanks to David "bamber" Ward <dlward134@gmail.com> for
-	the problem report.
+	Thanks to David Ward <dlward134@gmail.com> for the problem report.
 
 2014-09-01         Arnold D. Robbins     <arnold@skeeve.com>
 
diff --git a/doc/gawk.1 b/doc/gawk.1
index 4a70c2ed..c35ebf00 100644
--- a/doc/gawk.1
+++ b/doc/gawk.1
@@ -1126,9 +1126,14 @@ For each identifier, the value of the element is one of the following:
 \fB"array"\fR
 The identifier is an array.
 .TP
+\fB"builtin"\fR
+The identifier is a built-in function.
+.TP
 \fB"extension"\fR
 The identifier is an extension function loaded via
-.BR @load .
+.B @load
+or
+.BR \-l .
 .TP
 \fB"scalar"\fR
 The identifier is a scalar.
diff --git a/doc/gawk.info b/doc/gawk.info
index f008ecfa..0d7505a5 100644
--- a/doc/gawk.info
+++ b/doc/gawk.info
@@ -10269,7 +10269,8 @@ Options::), they are not special.
 
 `FUNCTAB #'
      An array whose indices and corresponding values are the names of
-     all the user-defined or extension functions in the program.
+     all the built-in, user-defined and extension functions in the
+     program.
 
           NOTE: Attempting to use the `delete' statement with the
           `FUNCTAB' array causes a fatal error.  Any attempt to assign
@@ -10305,9 +10306,12 @@ Options::), they are not special.
          `"array"'
                The identifier is an array.
 
+         `"builtin"'
+               The identifier is a built-in function.
+
          `"extension"'
                The identifier is an extension function loaded via
-               `@load'.
+               `@load' or `-l'.
 
          `"scalar"'
                The identifier is a scalar.
@@ -31836,7 +31840,7 @@ Index
                                                               (line  46)
 * dark corner, FILENAME variable <1>:    Auto-set.            (line  90)
 * dark corner, FILENAME variable:        Getline Notes.       (line  19)
-* dark corner, FNR/NR variables:         Auto-set.            (line 301)
+* dark corner, FNR/NR variables:         Auto-set.            (line 305)
 * dark corner, format-control characters: Control Letters.    (line  18)
 * dark corner, FS as null string:        Single Character Fields.
                                                               (line  20)
@@ -32050,7 +32054,7 @@ Index
                                                               (line 260)
 * differences in awk and gawk, print/printf statements: Format Modifiers.
                                                               (line  13)
-* differences in awk and gawk, PROCINFO array: Auto-set.      (line 128)
+* differences in awk and gawk, PROCINFO array: Auto-set.      (line 129)
 * differences in awk and gawk, read timeouts: Read Timeout.   (line   6)
 * differences in awk and gawk, record separators: awk split records.
                                                               (line 124)
@@ -32060,7 +32064,7 @@ Index
                                                               (line  26)
 * differences in awk and gawk, RS/RT variables: gawk split records.
                                                               (line  58)
-* differences in awk and gawk, RT variable: Auto-set.         (line 257)
+* differences in awk and gawk, RT variable: Auto-set.         (line 261)
 * differences in awk and gawk, single-character fields: Single Character Fields.
                                                               (line   6)
 * differences in awk and gawk, split() function: String Functions.
@@ -32068,7 +32072,7 @@ Index
 * differences in awk and gawk, strings:  Scalar Constants.    (line  20)
 * differences in awk and gawk, strings, storing: gawk split records.
                                                               (line  77)
-* differences in awk and gawk, SYMTAB variable: Auto-set.     (line 261)
+* differences in awk and gawk, SYMTAB variable: Auto-set.     (line 265)
 * differences in awk and gawk, TEXTDOMAIN variable: User-modified.
                                                               (line 152)
 * differences in awk and gawk, trunc-mod operation: Arithmetic Ops.
@@ -32107,8 +32111,8 @@ Index
 * dynamically loaded extensions:         Dynamic Extensions.  (line   6)
 * e debugger command (alias for enable): Breakpoint Control.  (line  73)
 * EBCDIC:                                Ordinal Functions.   (line  45)
-* effective group ID of gawk user:       Auto-set.            (line 133)
-* effective user ID of gawk user:        Auto-set.            (line 137)
+* effective group ID of gawk user:       Auto-set.            (line 134)
+* effective user ID of gawk user:        Auto-set.            (line 138)
 * egrep utility <1>:                     Egrep Program.       (line   6)
 * egrep utility:                         Bracket Expressions. (line  26)
 * egrep.awk program:                     Egrep Program.       (line  54)
@@ -32223,7 +32227,7 @@ Index
                                                               (line   6)
 * extension API version:                 Extension Versioning.
                                                               (line   6)
-* extension API, version number:         Auto-set.            (line 224)
+* extension API, version number:         Auto-set.            (line 228)
 * extension example:                     Extension Example.   (line   6)
 * extension registration:                Registration Functions.
                                                               (line   6)
@@ -32375,7 +32379,7 @@ Index
                                                               (line  12)
 * FNR variable <1>:                      Auto-set.            (line  99)
 * FNR variable:                          Records.             (line   6)
-* FNR variable, changing:                Auto-set.            (line 301)
+* FNR variable, changing:                Auto-set.            (line 305)
 * for statement:                         For Statement.       (line   6)
 * for statement, looping over arrays:    Scanning an Array.   (line  20)
 * fork() extension function:             Extension Sample Fork.
@@ -32476,7 +32480,7 @@ Index
 * G-d:                                   Acknowledgments.     (line  92)
 * Garfinkle, Scott:                      Contributors.        (line  34)
 * gawk program, dynamic profiling:       Profiling.           (line 179)
-* gawk version:                          Auto-set.            (line 199)
+* gawk version:                          Auto-set.            (line 203)
 * gawk, ARGIND variable in:              Other Arguments.     (line  12)
 * gawk, awk and <1>:                     This Manual.         (line  14)
 * gawk, awk and:                         Preface.             (line  21)
@@ -32545,7 +32549,7 @@ Index
 * gawk, OS/2 version of:                 PC Using.            (line  16)
 * gawk, PROCINFO array in <1>:           Two-way I/O.         (line  99)
 * gawk, PROCINFO array in <2>:           Time Functions.      (line  47)
-* gawk, PROCINFO array in:               Auto-set.            (line 128)
+* gawk, PROCINFO array in:               Auto-set.            (line 129)
 * gawk, regexp constants and:            Using Constant Regexps.
                                                               (line  28)
 * gawk, regular expressions, case sensitivity: Case-sensitivity.
@@ -32553,14 +32557,14 @@ Index
 * gawk, regular expressions, operators:  GNU Regexp Operators.
                                                               (line   6)
 * gawk, regular expressions, precedence: Regexp Operators.    (line 161)
-* gawk, RT variable in <1>:              Auto-set.            (line 257)
+* gawk, RT variable in <1>:              Auto-set.            (line 261)
 * gawk, RT variable in <2>:              Multiple Line.       (line 129)
 * gawk, RT variable in:                  awk split records.   (line 124)
 * gawk, See Also awk:                    Preface.             (line  34)
 * gawk, source code, obtaining:          Getting.             (line   6)
 * gawk, splitting fields and:            Constant Size.       (line  88)
 * gawk, string-translation functions:    I18N Functions.      (line   6)
-* gawk, SYMTAB array in:                 Auto-set.            (line 261)
+* gawk, SYMTAB array in:                 Auto-set.            (line 265)
 * gawk, TEXTDOMAIN variable in:          User-modified.       (line 152)
 * gawk, timestamps:                      Time Functions.      (line   6)
 * gawk, uses for:                        Preface.             (line  34)
@@ -32646,7 +32650,7 @@ Index
 * Grigera, Juan:                         Contributors.        (line  57)
 * group database, reading:               Group Functions.     (line   6)
 * group file:                            Group Functions.     (line   6)
-* group ID of gawk user:                 Auto-set.            (line 172)
+* group ID of gawk user:                 Auto-set.            (line 176)
 * groups, information about:             Group Functions.     (line   6)
 * gsub <1>:                              String Functions.    (line 139)
 * gsub:                                  Using Constant Regexps.
@@ -32940,7 +32944,7 @@ Index
 * mawk utility <3>:                      Concatenation.       (line  36)
 * mawk utility <4>:                      Getline/Pipe.        (line  62)
 * mawk utility:                          Escape Sequences.    (line 130)
-* maximum precision supported by MPFR library: Auto-set.      (line 213)
+* maximum precision supported by MPFR library: Auto-set.      (line 217)
 * McIlroy, Doug:                         Glossary.            (line 149)
 * McPhee, Patrick:                       Contributors.        (line 100)
 * message object files:                  Explaining gettext.  (line  42)
@@ -32953,7 +32957,7 @@ Index
 * messages from extensions:              Printing Messages.   (line   6)
 * metacharacters in regular expressions: Regexp Operators.    (line   6)
 * metacharacters, escape sequences for:  Escape Sequences.    (line 136)
-* minimum precision supported by MPFR library: Auto-set.      (line 216)
+* minimum precision supported by MPFR library: Auto-set.      (line 220)
 * mktime:                                Time Functions.      (line  25)
 * modifiers, in format specifiers:       Format Modifiers.    (line   6)
 * monetary information, localization:    Explaining gettext.  (line 104)
@@ -33013,9 +33017,9 @@ Index
 * non-existent array elements:           Reference to Elements.
                                                               (line  23)
 * not Boolean-logic operator:            Boolean Ops.         (line   6)
-* NR variable <1>:                       Auto-set.            (line 123)
+* NR variable <1>:                       Auto-set.            (line 124)
 * NR variable:                           Records.             (line   6)
-* NR variable, changing:                 Auto-set.            (line 301)
+* NR variable, changing:                 Auto-set.            (line 305)
 * null strings <1>:                      Basic Data Typing.   (line  26)
 * null strings <2>:                      Truth Values.        (line   6)
 * null strings <3>:                      Regexp Field Splitting.
@@ -33129,7 +33133,7 @@ Index
 * p debugger command (alias for print):  Viewing And Changing Data.
                                                               (line  36)
 * Papadopoulos, Panos:                   Contributors.        (line 128)
-* parent process ID of gawk process:     Auto-set.            (line 181)
+* parent process ID of gawk process:     Auto-set.            (line 185)
 * parentheses (), in a profile:          Profiling.           (line 146)
 * parentheses (), regexp operator:       Regexp Operators.    (line  81)
 * password file:                         Passwd Functions.    (line  16)
@@ -33292,24 +33296,24 @@ Index
 * printing, unduplicated lines of text:  Uniq Program.        (line   6)
 * printing, user information:            Id Program.          (line   6)
 * private variables:                     Library Names.       (line  11)
-* process group idIDof gawk process:     Auto-set.            (line 175)
-* process ID of gawk process:            Auto-set.            (line 178)
+* process group idIDof gawk process:     Auto-set.            (line 179)
+* process ID of gawk process:            Auto-set.            (line 182)
 * processes, two-way communications with: Two-way I/O.        (line   6)
 * processing data:                       Basic High Level.    (line   6)
 * PROCINFO array <1>:                    Passwd Functions.    (line   6)
 * PROCINFO array <2>:                    Time Functions.      (line  47)
-* PROCINFO array:                        Auto-set.            (line 128)
+* PROCINFO array:                        Auto-set.            (line 129)
 * PROCINFO array, and communications via ptys: Two-way I/O.   (line  99)
 * PROCINFO array, and group membership:  Group Functions.     (line   6)
 * PROCINFO array, and user and group ID numbers: Id Program.  (line  15)
 * PROCINFO array, testing the field splitting: Passwd Functions.
                                                               (line 161)
-* PROCINFO array, uses:                  Auto-set.            (line 234)
+* PROCINFO array, uses:                  Auto-set.            (line 238)
 * PROCINFO, values of sorted_in:         Controlling Scanning.
                                                               (line  26)
 * profiling awk programs:                Profiling.           (line   6)
 * profiling awk programs, dynamically:   Profiling.           (line 179)
-* program identifiers:                   Auto-set.            (line 146)
+* program identifiers:                   Auto-set.            (line 147)
 * program, definition of:                Getting Started.     (line  21)
 * programming conventions, --non-decimal-data option: Nondecimal Data.
                                                               (line  36)
@@ -33468,7 +33472,7 @@ Index
 * right shift:                           Bitwise Functions.   (line  52)
 * right shift, bitwise:                  Bitwise Functions.   (line  32)
 * Ritchie, Dennis:                       Basic Data Typing.   (line  54)
-* RLENGTH variable:                      Auto-set.            (line 244)
+* RLENGTH variable:                      Auto-set.            (line 248)
 * RLENGTH variable, match() function and: String Functions.   (line 224)
 * Robbins, Arnold <1>:                   Future Extensions.   (line   6)
 * Robbins, Arnold <2>:                   Bugs.                (line  32)
@@ -33494,9 +33498,9 @@ Index
 * RS variable:                           awk split records.   (line  12)
 * RS variable, multiline records and:    Multiple Line.       (line  17)
 * rshift:                                Bitwise Functions.   (line  52)
-* RSTART variable:                       Auto-set.            (line 250)
+* RSTART variable:                       Auto-set.            (line 254)
 * RSTART variable, match() function and: String Functions.    (line 224)
-* RT variable <1>:                       Auto-set.            (line 257)
+* RT variable <1>:                       Auto-set.            (line 261)
 * RT variable <2>:                       Multiple Line.       (line 129)
 * RT variable:                           awk split records.   (line 124)
 * Rubin, Paul <1>:                       Contributors.        (line  15)
@@ -33516,7 +33520,7 @@ Index
 * scanning arrays:                       Scanning an Array.   (line   6)
 * scanning multidimensional arrays:      Multiscanning.       (line  11)
 * Schorr, Andrew <1>:                    Contributors.        (line 133)
-* Schorr, Andrew <2>:                    Auto-set.            (line 284)
+* Schorr, Andrew <2>:                    Auto-set.            (line 288)
 * Schorr, Andrew:                        Acknowledgments.     (line  60)
 * Schreiber, Bert:                       Acknowledgments.     (line  38)
 * Schreiber, Rita:                       Acknowledgments.     (line  38)
@@ -33600,7 +33604,7 @@ Index
                                                               (line 116)
 * sidebar, Changing FS Does Not Affect the Fields: Field Splitting Summary.
                                                               (line  38)
-* sidebar, Changing NR and FNR:          Auto-set.            (line 299)
+* sidebar, Changing NR and FNR:          Auto-set.            (line 303)
 * sidebar, Controlling Output Buffering with system(): I/O Functions.
                                                               (line 138)
 * sidebar, Escape Sequences for Metacharacters: Escape Sequences.
@@ -33763,9 +33767,9 @@ Index
 * substr:                                String Functions.    (line 479)
 * substring:                             String Functions.    (line 479)
 * Sumner, Andrew:                        Other Versions.      (line  64)
-* supplementary groups of gawk process:  Auto-set.            (line 229)
+* supplementary groups of gawk process:  Auto-set.            (line 233)
 * switch statement:                      Switch Statement.    (line   6)
-* SYMTAB array:                          Auto-set.            (line 261)
+* SYMTAB array:                          Auto-set.            (line 265)
 * syntactic ambiguity: /= operator vs. /=.../ regexp constant: Assignment Ops.
                                                               (line 148)
 * system:                                I/O Functions.       (line  75)
@@ -33943,10 +33947,10 @@ Index
 * variables, uninitialized, as array subscripts: Uninitialized Subscripts.
                                                               (line   6)
 * variables, user-defined:               Variables.           (line   6)
-* version of gawk:                       Auto-set.            (line 199)
-* version of gawk extension API:         Auto-set.            (line 224)
-* version of GNU MP library:             Auto-set.            (line 210)
-* version of GNU MPFR library:           Auto-set.            (line 206)
+* version of gawk:                       Auto-set.            (line 203)
+* version of gawk extension API:         Auto-set.            (line 228)
+* version of GNU MP library:             Auto-set.            (line 214)
+* version of GNU MPFR library:           Auto-set.            (line 210)
 * vertical bar (|):                      Regexp Operators.    (line  70)
 * vertical bar (|), | operator (I/O) <1>: Precedence.         (line  65)
 * vertical bar (|), | operator (I/O):    Getline/Pipe.        (line   9)
@@ -34231,355 +34235,355 @@ Node: Built-in Variables426497
 Node: User-modified427624
 Ref: User-modified-Footnote-1435313
 Node: Auto-set435375
-Ref: Auto-set-Footnote-1447957
-Ref: Auto-set-Footnote-2448162
-Node: ARGC and ARGV448218
-Node: Pattern Action Summary452122
-Node: Arrays454345
-Node: Array Basics455894
-Node: Array Intro456720
-Ref: figure-array-elements458693
-Ref: Array Intro-Footnote-1461217
-Node: Reference to Elements461345
-Node: Assigning Elements463795
-Node: Array Example464286
-Node: Scanning an Array466018
-Node: Controlling Scanning469019
-Ref: Controlling Scanning-Footnote-1474192
-Node: Delete474508
-Ref: Delete-Footnote-1477259
-Node: Numeric Array Subscripts477316
-Node: Uninitialized Subscripts479499
-Node: Multidimensional481126
-Node: Multiscanning484239
-Node: Arrays of Arrays485828
-Node: Arrays Summary490491
-Node: Functions492596
-Node: Built-in493469
-Node: Calling Built-in494547
-Node: Numeric Functions496535
-Ref: Numeric Functions-Footnote-1500569
-Ref: Numeric Functions-Footnote-2500926
-Ref: Numeric Functions-Footnote-3500974
-Node: String Functions501243
-Ref: String Functions-Footnote-1524240
-Ref: String Functions-Footnote-2524369
-Ref: String Functions-Footnote-3524617
-Node: Gory Details524704
-Ref: table-sub-escapes526477
-Ref: table-sub-proposed527997
-Ref: table-posix-sub529361
-Ref: table-gensub-escapes530901
-Ref: Gory Details-Footnote-1532077
-Node: I/O Functions532228
-Ref: I/O Functions-Footnote-1539338
-Node: Time Functions539485
-Ref: Time Functions-Footnote-1549949
-Ref: Time Functions-Footnote-2550017
-Ref: Time Functions-Footnote-3550175
-Ref: Time Functions-Footnote-4550286
-Ref: Time Functions-Footnote-5550398
-Ref: Time Functions-Footnote-6550625
-Node: Bitwise Functions550891
-Ref: table-bitwise-ops551453
-Ref: Bitwise Functions-Footnote-1555698
-Node: Type Functions555882
-Node: I18N Functions557024
-Node: User-defined558669
-Node: Definition Syntax559473
-Ref: Definition Syntax-Footnote-1564786
-Node: Function Example564855
-Ref: Function Example-Footnote-1567495
-Node: Function Caveats567517
-Node: Calling A Function568035
-Node: Variable Scope568990
-Node: Pass By Value/Reference571978
-Node: Return Statement575488
-Node: Dynamic Typing578472
-Node: Indirect Calls579401
-Ref: Indirect Calls-Footnote-1589117
-Node: Functions Summary589245
-Node: Library Functions591895
-Ref: Library Functions-Footnote-1595513
-Ref: Library Functions-Footnote-2595656
-Node: Library Names595827
-Ref: Library Names-Footnote-1599300
-Ref: Library Names-Footnote-2599520
-Node: General Functions599606
-Node: Strtonum Function600634
-Node: Assert Function603508
-Node: Round Function606834
-Node: Cliff Random Function608375
-Node: Ordinal Functions609391
-Ref: Ordinal Functions-Footnote-1612456
-Ref: Ordinal Functions-Footnote-2612708
-Node: Join Function612919
-Ref: Join Function-Footnote-1614690
-Node: Getlocaltime Function614890
-Node: Readfile Function618626
-Node: Data File Management620465
-Node: Filetrans Function621097
-Node: Rewind Function625166
-Node: File Checking626724
-Ref: File Checking-Footnote-1627856
-Node: Empty Files628057
-Node: Ignoring Assigns630036
-Node: Getopt Function631590
-Ref: Getopt Function-Footnote-1642854
-Node: Passwd Functions643057
-Ref: Passwd Functions-Footnote-1652036
-Node: Group Functions652124
-Ref: Group Functions-Footnote-1660055
-Node: Walking Arrays660268
-Node: Library Functions Summary661871
-Node: Library Exercises663259
-Node: Sample Programs664539
-Node: Running Examples665309
-Node: Clones666037
-Node: Cut Program667261
-Node: Egrep Program677119
-Ref: Egrep Program-Footnote-1684706
-Node: Id Program684816
-Node: Split Program688470
-Ref: Split Program-Footnote-1692008
-Node: Tee Program692136
-Node: Uniq Program694923
-Node: Wc Program702346
-Ref: Wc Program-Footnote-1706611
-Node: Miscellaneous Programs706703
-Node: Dupword Program707916
-Node: Alarm Program709947
-Node: Translate Program714751
-Ref: Translate Program-Footnote-1719142
-Ref: Translate Program-Footnote-2719412
-Node: Labels Program719551
-Ref: Labels Program-Footnote-1722912
-Node: Word Sorting722996
-Node: History Sorting727039
-Node: Extract Program728875
-Node: Simple Sed736411
-Node: Igawk Program739473
-Ref: Igawk Program-Footnote-1753777
-Ref: Igawk Program-Footnote-2753978
-Node: Anagram Program754116
-Node: Signature Program757184
-Node: Programs Summary758431
-Node: Programs Exercises759646
-Ref: Programs Exercises-Footnote-1764033
-Node: Advanced Features764124
-Node: Nondecimal Data766072
-Node: Array Sorting767649
-Node: Controlling Array Traversal768346
-Node: Array Sorting Functions776626
-Ref: Array Sorting Functions-Footnote-1780533
-Node: Two-way I/O780727
-Ref: Two-way I/O-Footnote-1785671
-Ref: Two-way I/O-Footnote-2785850
-Node: TCP/IP Networking785932
-Node: Profiling788777
-Node: Advanced Features Summary796319
-Node: Internationalization798183
-Node: I18N and L10N799663
-Node: Explaining gettext800349
-Ref: Explaining gettext-Footnote-1805375
-Ref: Explaining gettext-Footnote-2805559
-Node: Programmer i18n805724
-Ref: Programmer i18n-Footnote-1810518
-Node: Translator i18n810567
-Node: String Extraction811361
-Ref: String Extraction-Footnote-1812494
-Node: Printf Ordering812580
-Ref: Printf Ordering-Footnote-1815362
-Node: I18N Portability815426
-Ref: I18N Portability-Footnote-1817875
-Node: I18N Example817938
-Ref: I18N Example-Footnote-1820644
-Node: Gawk I18N820716
-Node: I18N Summary821354
-Node: Debugger822693
-Node: Debugging823715
-Node: Debugging Concepts824156
-Node: Debugging Terms826012
-Node: Awk Debugging828609
-Node: Sample Debugging Session829501
-Node: Debugger Invocation830021
-Node: Finding The Bug831357
-Node: List of Debugger Commands837836
-Node: Breakpoint Control839168
-Node: Debugger Execution Control842832
-Node: Viewing And Changing Data846192
-Node: Execution Stack849550
-Node: Debugger Info851063
-Node: Miscellaneous Debugger Commands855057
-Node: Readline Support860241
-Node: Limitations861133
-Node: Debugging Summary863406
-Node: Arbitrary Precision Arithmetic864574
-Node: Computer Arithmetic866061
-Ref: Computer Arithmetic-Footnote-1870448
-Node: Math Definitions870505
-Ref: table-ieee-formats873794
-Ref: Math Definitions-Footnote-1874334
-Node: MPFR features874437
-Node: FP Math Caution876054
-Ref: FP Math Caution-Footnote-1877104
-Node: Inexactness of computations877473
-Node: Inexact representation878421
-Node: Comparing FP Values879776
-Node: Errors accumulate880740
-Node: Getting Accuracy882173
-Node: Try To Round884832
-Node: Setting precision885731
-Ref: table-predefined-precision-strings886413
-Node: Setting the rounding mode888206
-Ref: table-gawk-rounding-modes888570
-Ref: Setting the rounding mode-Footnote-1892024
-Node: Arbitrary Precision Integers892203
-Ref: Arbitrary Precision Integers-Footnote-1895184
-Node: POSIX Floating Point Problems895333
-Ref: POSIX Floating Point Problems-Footnote-1899209
-Node: Floating point summary899247
-Node: Dynamic Extensions901451
-Node: Extension Intro903003
-Node: Plugin License904268
-Node: Extension Mechanism Outline904953
-Ref: figure-load-extension905377
-Ref: figure-load-new-function906862
-Ref: figure-call-new-function907864
-Node: Extension API Description909848
-Node: Extension API Functions Introduction911298
-Node: General Data Types916165
-Ref: General Data Types-Footnote-1921858
-Node: Requesting Values922157
-Ref: table-value-types-returned922894
-Node: Memory Allocation Functions923852
-Ref: Memory Allocation Functions-Footnote-1926599
-Node: Constructor Functions926695
-Node: Registration Functions928453
-Node: Extension Functions929138
-Node: Exit Callback Functions931440
-Node: Extension Version String932688
-Node: Input Parsers933338
-Node: Output Wrappers943152
-Node: Two-way processors947668
-Node: Printing Messages949872
-Ref: Printing Messages-Footnote-1950949
-Node: Updating `ERRNO'951101
-Node: Accessing Parameters951840
-Node: Symbol Table Access953070
-Node: Symbol table by name953584
-Node: Symbol table by cookie955560
-Ref: Symbol table by cookie-Footnote-1959693
-Node: Cached values959756
-Ref: Cached values-Footnote-1963260
-Node: Array Manipulation963351
-Ref: Array Manipulation-Footnote-1964449
-Node: Array Data Types964488
-Ref: Array Data Types-Footnote-1967191
-Node: Array Functions967283
-Node: Flattening Arrays971157
-Node: Creating Arrays978009
-Node: Extension API Variables982740
-Node: Extension Versioning983376
-Node: Extension API Informational Variables985277
-Node: Extension API Boilerplate986363
-Node: Finding Extensions990167
-Node: Extension Example990727
-Node: Internal File Description991457
-Node: Internal File Ops995548
-Ref: Internal File Ops-Footnote-11006980
-Node: Using Internal File Ops1007120
-Ref: Using Internal File Ops-Footnote-11009467
-Node: Extension Samples1009735
-Node: Extension Sample File Functions1011259
-Node: Extension Sample Fnmatch1018827
-Node: Extension Sample Fork1020309
-Node: Extension Sample Inplace1021522
-Node: Extension Sample Ord1023197
-Node: Extension Sample Readdir1024033
-Ref: table-readdir-file-types1024889
-Node: Extension Sample Revout1025688
-Node: Extension Sample Rev2way1026279
-Node: Extension Sample Read write array1027020
-Node: Extension Sample Readfile1028899
-Node: Extension Sample API Tests1029999
-Node: Extension Sample Time1030524
-Node: gawkextlib1031839
-Node: Extension summary1034652
-Node: Extension Exercises1038345
-Node: Language History1039067
-Node: V7/SVR3.11040710
-Node: SVR41043030
-Node: POSIX1044472
-Node: BTL1045858
-Node: POSIX/GNU1046592
-Node: Feature History1052308
-Node: Common Extensions1065399
-Node: Ranges and Locales1066711
-Ref: Ranges and Locales-Footnote-11071328
-Ref: Ranges and Locales-Footnote-21071355
-Ref: Ranges and Locales-Footnote-31071589
-Node: Contributors1071810
-Node: History summary1077235
-Node: Installation1078604
-Node: Gawk Distribution1079555
-Node: Getting1080039
-Node: Extracting1080863
-Node: Distribution contents1082505
-Node: Unix Installation1088222
-Node: Quick Installation1088839
-Node: Additional Configuration Options1091281
-Node: Configuration Philosophy1093019
-Node: Non-Unix Installation1095370
-Node: PC Installation1095828
-Node: PC Binary Installation1097139
-Node: PC Compiling1098987
-Ref: PC Compiling-Footnote-11101986
-Node: PC Testing1102091
-Node: PC Using1103267
-Node: Cygwin1107419
-Node: MSYS1108228
-Node: VMS Installation1108742
-Node: VMS Compilation1109538
-Ref: VMS Compilation-Footnote-11110760
-Node: VMS Dynamic Extensions1110818
-Node: VMS Installation Details1112191
-Node: VMS Running1114443
-Node: VMS GNV1117277
-Node: VMS Old Gawk1118000
-Node: Bugs1118470
-Node: Other Versions1122474
-Node: Installation summary1128701
-Node: Notes1129757
-Node: Compatibility Mode1130622
-Node: Additions1131404
-Node: Accessing The Source1132329
-Node: Adding Code1133765
-Node: New Ports1139943
-Node: Derived Files1144424
-Ref: Derived Files-Footnote-11149505
-Ref: Derived Files-Footnote-21149539
-Ref: Derived Files-Footnote-31150135
-Node: Future Extensions1150249
-Node: Implementation Limitations1150855
-Node: Extension Design1152103
-Node: Old Extension Problems1153257
-Ref: Old Extension Problems-Footnote-11154774
-Node: Extension New Mechanism Goals1154831
-Ref: Extension New Mechanism Goals-Footnote-11158191
-Node: Extension Other Design Decisions1158380
-Node: Extension Future Growth1160486
-Node: Old Extension Mechanism1161322
-Node: Notes summary1163084
-Node: Basic Concepts1164270
-Node: Basic High Level1164951
-Ref: figure-general-flow1165223
-Ref: figure-process-flow1165822
-Ref: Basic High Level-Footnote-11169051
-Node: Basic Data Typing1169236
-Node: Glossary1172564
-Node: Copying1197716
-Node: GNU Free Documentation License1235272
-Node: Index1260408
+Ref: Auto-set-Footnote-1448057
+Ref: Auto-set-Footnote-2448262
+Node: ARGC and ARGV448318
+Node: Pattern Action Summary452222
+Node: Arrays454445
+Node: Array Basics455994
+Node: Array Intro456820
+Ref: figure-array-elements458793
+Ref: Array Intro-Footnote-1461317
+Node: Reference to Elements461445
+Node: Assigning Elements463895
+Node: Array Example464386
+Node: Scanning an Array466118
+Node: Controlling Scanning469119
+Ref: Controlling Scanning-Footnote-1474292
+Node: Delete474608
+Ref: Delete-Footnote-1477359
+Node: Numeric Array Subscripts477416
+Node: Uninitialized Subscripts479599
+Node: Multidimensional481226
+Node: Multiscanning484339
+Node: Arrays of Arrays485928
+Node: Arrays Summary490591
+Node: Functions492696
+Node: Built-in493569
+Node: Calling Built-in494647
+Node: Numeric Functions496635
+Ref: Numeric Functions-Footnote-1500669
+Ref: Numeric Functions-Footnote-2501026
+Ref: Numeric Functions-Footnote-3501074
+Node: String Functions501343
+Ref: String Functions-Footnote-1524340
+Ref: String Functions-Footnote-2524469
+Ref: String Functions-Footnote-3524717
+Node: Gory Details524804
+Ref: table-sub-escapes526577
+Ref: table-sub-proposed528097
+Ref: table-posix-sub529461
+Ref: table-gensub-escapes531001
+Ref: Gory Details-Footnote-1532177
+Node: I/O Functions532328
+Ref: I/O Functions-Footnote-1539438
+Node: Time Functions539585
+Ref: Time Functions-Footnote-1550049
+Ref: Time Functions-Footnote-2550117
+Ref: Time Functions-Footnote-3550275
+Ref: Time Functions-Footnote-4550386
+Ref: Time Functions-Footnote-5550498
+Ref: Time Functions-Footnote-6550725
+Node: Bitwise Functions550991
+Ref: table-bitwise-ops551553
+Ref: Bitwise Functions-Footnote-1555798
+Node: Type Functions555982
+Node: I18N Functions557124
+Node: User-defined558769
+Node: Definition Syntax559573
+Ref: Definition Syntax-Footnote-1564886
+Node: Function Example564955
+Ref: Function Example-Footnote-1567595
+Node: Function Caveats567617
+Node: Calling A Function568135
+Node: Variable Scope569090
+Node: Pass By Value/Reference572078
+Node: Return Statement575588
+Node: Dynamic Typing578572
+Node: Indirect Calls579501
+Ref: Indirect Calls-Footnote-1589217
+Node: Functions Summary589345
+Node: Library Functions591995
+Ref: Library Functions-Footnote-1595613
+Ref: Library Functions-Footnote-2595756
+Node: Library Names595927
+Ref: Library Names-Footnote-1599400
+Ref: Library Names-Footnote-2599620
+Node: General Functions599706
+Node: Strtonum Function600734
+Node: Assert Function603608
+Node: Round Function606934
+Node: Cliff Random Function608475
+Node: Ordinal Functions609491
+Ref: Ordinal Functions-Footnote-1612556
+Ref: Ordinal Functions-Footnote-2612808
+Node: Join Function613019
+Ref: Join Function-Footnote-1614790
+Node: Getlocaltime Function614990
+Node: Readfile Function618726
+Node: Data File Management620565
+Node: Filetrans Function621197
+Node: Rewind Function625266
+Node: File Checking626824
+Ref: File Checking-Footnote-1627956
+Node: Empty Files628157
+Node: Ignoring Assigns630136
+Node: Getopt Function631690
+Ref: Getopt Function-Footnote-1642954
+Node: Passwd Functions643157
+Ref: Passwd Functions-Footnote-1652136
+Node: Group Functions652224
+Ref: Group Functions-Footnote-1660155
+Node: Walking Arrays660368
+Node: Library Functions Summary661971
+Node: Library Exercises663359
+Node: Sample Programs664639
+Node: Running Examples665409
+Node: Clones666137
+Node: Cut Program667361
+Node: Egrep Program677219
+Ref: Egrep Program-Footnote-1684806
+Node: Id Program684916
+Node: Split Program688570
+Ref: Split Program-Footnote-1692108
+Node: Tee Program692236
+Node: Uniq Program695023
+Node: Wc Program702446
+Ref: Wc Program-Footnote-1706711
+Node: Miscellaneous Programs706803
+Node: Dupword Program708016
+Node: Alarm Program710047
+Node: Translate Program714851
+Ref: Translate Program-Footnote-1719242
+Ref: Translate Program-Footnote-2719512
+Node: Labels Program719651
+Ref: Labels Program-Footnote-1723012
+Node: Word Sorting723096
+Node: History Sorting727139
+Node: Extract Program728975
+Node: Simple Sed736511
+Node: Igawk Program739573
+Ref: Igawk Program-Footnote-1753877
+Ref: Igawk Program-Footnote-2754078
+Node: Anagram Program754216
+Node: Signature Program757284
+Node: Programs Summary758531
+Node: Programs Exercises759746
+Ref: Programs Exercises-Footnote-1764133
+Node: Advanced Features764224
+Node: Nondecimal Data766172
+Node: Array Sorting767749
+Node: Controlling Array Traversal768446
+Node: Array Sorting Functions776726
+Ref: Array Sorting Functions-Footnote-1780633
+Node: Two-way I/O780827
+Ref: Two-way I/O-Footnote-1785771
+Ref: Two-way I/O-Footnote-2785950
+Node: TCP/IP Networking786032
+Node: Profiling788877
+Node: Advanced Features Summary796419
+Node: Internationalization798283
+Node: I18N and L10N799763
+Node: Explaining gettext800449
+Ref: Explaining gettext-Footnote-1805475
+Ref: Explaining gettext-Footnote-2805659
+Node: Programmer i18n805824
+Ref: Programmer i18n-Footnote-1810618
+Node: Translator i18n810667
+Node: String Extraction811461
+Ref: String Extraction-Footnote-1812594
+Node: Printf Ordering812680
+Ref: Printf Ordering-Footnote-1815462
+Node: I18N Portability815526
+Ref: I18N Portability-Footnote-1817975
+Node: I18N Example818038
+Ref: I18N Example-Footnote-1820744
+Node: Gawk I18N820816
+Node: I18N Summary821454
+Node: Debugger822793
+Node: Debugging823815
+Node: Debugging Concepts824256
+Node: Debugging Terms826112
+Node: Awk Debugging828709
+Node: Sample Debugging Session829601
+Node: Debugger Invocation830121
+Node: Finding The Bug831457
+Node: List of Debugger Commands837936
+Node: Breakpoint Control839268
+Node: Debugger Execution Control842932
+Node: Viewing And Changing Data846292
+Node: Execution Stack849650
+Node: Debugger Info851163
+Node: Miscellaneous Debugger Commands855157
+Node: Readline Support860341
+Node: Limitations861233
+Node: Debugging Summary863506
+Node: Arbitrary Precision Arithmetic864674
+Node: Computer Arithmetic866161
+Ref: Computer Arithmetic-Footnote-1870548
+Node: Math Definitions870605
+Ref: table-ieee-formats873894
+Ref: Math Definitions-Footnote-1874434
+Node: MPFR features874537
+Node: FP Math Caution876154
+Ref: FP Math Caution-Footnote-1877204
+Node: Inexactness of computations877573
+Node: Inexact representation878521
+Node: Comparing FP Values879876
+Node: Errors accumulate880840
+Node: Getting Accuracy882273
+Node: Try To Round884932
+Node: Setting precision885831
+Ref: table-predefined-precision-strings886513
+Node: Setting the rounding mode888306
+Ref: table-gawk-rounding-modes888670
+Ref: Setting the rounding mode-Footnote-1892124
+Node: Arbitrary Precision Integers892303
+Ref: Arbitrary Precision Integers-Footnote-1895284
+Node: POSIX Floating Point Problems895433
+Ref: POSIX Floating Point Problems-Footnote-1899309
+Node: Floating point summary899347
+Node: Dynamic Extensions901551
+Node: Extension Intro903103
+Node: Plugin License904368
+Node: Extension Mechanism Outline905053
+Ref: figure-load-extension905477
+Ref: figure-load-new-function906962
+Ref: figure-call-new-function907964
+Node: Extension API Description909948
+Node: Extension API Functions Introduction911398
+Node: General Data Types916265
+Ref: General Data Types-Footnote-1921958
+Node: Requesting Values922257
+Ref: table-value-types-returned922994
+Node: Memory Allocation Functions923952
+Ref: Memory Allocation Functions-Footnote-1926699
+Node: Constructor Functions926795
+Node: Registration Functions928553
+Node: Extension Functions929238
+Node: Exit Callback Functions931540
+Node: Extension Version String932788
+Node: Input Parsers933438
+Node: Output Wrappers943252
+Node: Two-way processors947768
+Node: Printing Messages949972
+Ref: Printing Messages-Footnote-1951049
+Node: Updating `ERRNO'951201
+Node: Accessing Parameters951940
+Node: Symbol Table Access953170
+Node: Symbol table by name953684
+Node: Symbol table by cookie955660
+Ref: Symbol table by cookie-Footnote-1959793
+Node: Cached values959856
+Ref: Cached values-Footnote-1963360
+Node: Array Manipulation963451
+Ref: Array Manipulation-Footnote-1964549
+Node: Array Data Types964588
+Ref: Array Data Types-Footnote-1967291
+Node: Array Functions967383
+Node: Flattening Arrays971257
+Node: Creating Arrays978109
+Node: Extension API Variables982840
+Node: Extension Versioning983476
+Node: Extension API Informational Variables985377
+Node: Extension API Boilerplate986463
+Node: Finding Extensions990267
+Node: Extension Example990827
+Node: Internal File Description991557
+Node: Internal File Ops995648
+Ref: Internal File Ops-Footnote-11007080
+Node: Using Internal File Ops1007220
+Ref: Using Internal File Ops-Footnote-11009567
+Node: Extension Samples1009835
+Node: Extension Sample File Functions1011359
+Node: Extension Sample Fnmatch1018927
+Node: Extension Sample Fork1020409
+Node: Extension Sample Inplace1021622
+Node: Extension Sample Ord1023297
+Node: Extension Sample Readdir1024133
+Ref: table-readdir-file-types1024989
+Node: Extension Sample Revout1025788
+Node: Extension Sample Rev2way1026379
+Node: Extension Sample Read write array1027120
+Node: Extension Sample Readfile1028999
+Node: Extension Sample API Tests1030099
+Node: Extension Sample Time1030624
+Node: gawkextlib1031939
+Node: Extension summary1034752
+Node: Extension Exercises1038445
+Node: Language History1039167
+Node: V7/SVR3.11040810
+Node: SVR41043130
+Node: POSIX1044572
+Node: BTL1045958
+Node: POSIX/GNU1046692
+Node: Feature History1052408
+Node: Common Extensions1065499
+Node: Ranges and Locales1066811
+Ref: Ranges and Locales-Footnote-11071428
+Ref: Ranges and Locales-Footnote-21071455
+Ref: Ranges and Locales-Footnote-31071689
+Node: Contributors1071910
+Node: History summary1077335
+Node: Installation1078704
+Node: Gawk Distribution1079655
+Node: Getting1080139
+Node: Extracting1080963
+Node: Distribution contents1082605
+Node: Unix Installation1088322
+Node: Quick Installation1088939
+Node: Additional Configuration Options1091381
+Node: Configuration Philosophy1093119
+Node: Non-Unix Installation1095470
+Node: PC Installation1095928
+Node: PC Binary Installation1097239
+Node: PC Compiling1099087
+Ref: PC Compiling-Footnote-11102086
+Node: PC Testing1102191
+Node: PC Using1103367
+Node: Cygwin1107519
+Node: MSYS1108328
+Node: VMS Installation1108842
+Node: VMS Compilation1109638
+Ref: VMS Compilation-Footnote-11110860
+Node: VMS Dynamic Extensions1110918
+Node: VMS Installation Details1112291
+Node: VMS Running1114543
+Node: VMS GNV1117377
+Node: VMS Old Gawk1118100
+Node: Bugs1118570
+Node: Other Versions1122574
+Node: Installation summary1128801
+Node: Notes1129857
+Node: Compatibility Mode1130722
+Node: Additions1131504
+Node: Accessing The Source1132429
+Node: Adding Code1133865
+Node: New Ports1140043
+Node: Derived Files1144524
+Ref: Derived Files-Footnote-11149605
+Ref: Derived Files-Footnote-21149639
+Ref: Derived Files-Footnote-31150235
+Node: Future Extensions1150349
+Node: Implementation Limitations1150955
+Node: Extension Design1152203
+Node: Old Extension Problems1153357
+Ref: Old Extension Problems-Footnote-11154874
+Node: Extension New Mechanism Goals1154931
+Ref: Extension New Mechanism Goals-Footnote-11158291
+Node: Extension Other Design Decisions1158480
+Node: Extension Future Growth1160586
+Node: Old Extension Mechanism1161422
+Node: Notes summary1163184
+Node: Basic Concepts1164370
+Node: Basic High Level1165051
+Ref: figure-general-flow1165323
+Ref: figure-process-flow1165922
+Ref: Basic High Level-Footnote-11169151
+Node: Basic Data Typing1169336
+Node: Glossary1172664
+Node: Copying1197816
+Node: GNU Free Documentation License1235372
+Node: Index1260508
 
 End Tag Table
diff --git a/doc/gawk.texi b/doc/gawk.texi
index 6e917e44..1ecfbb84 100644
--- a/doc/gawk.texi
+++ b/doc/gawk.texi
@@ -14724,7 +14724,7 @@ current record. @xref{Changing Fields}.
 @cindex differences in @command{awk} and @command{gawk}, @code{FUNCTAB} variable
 @item @code{FUNCTAB #}
 An array whose indices and corresponding values are the names of all
-the user-defined or extension functions in the program.
+the built-in, user-defined and extension functions in the program.
 
 @quotation NOTE
 Attempting to use the @code{delete} statement with the @code{FUNCTAB}
@@ -14772,9 +14772,12 @@ text of the AWK program.  For each identifier, the value of the element is one o
 @item "array"
 The identifier is an array.
 
+@item "builtin"
+The identifier is a built-in function.
+
 @item "extension"
 The identifier is an extension function loaded via
-@code{@@load}.
+@code{@@load} or @option{-l}.
 
 @item "scalar"
 The identifier is a scalar.
diff --git a/doc/gawktexi.in b/doc/gawktexi.in
index a6ece064..31faa324 100644
--- a/doc/gawktexi.in
+++ b/doc/gawktexi.in
@@ -14058,7 +14058,7 @@ current record. @xref{Changing Fields}.
 @cindex differences in @command{awk} and @command{gawk}, @code{FUNCTAB} variable
 @item @code{FUNCTAB #}
 An array whose indices and corresponding values are the names of all
-the user-defined or extension functions in the program.
+the built-in, user-defined and extension functions in the program.
 
 @quotation NOTE
 Attempting to use the @code{delete} statement with the @code{FUNCTAB}
@@ -14106,9 +14106,12 @@ text of the AWK program.  For each identifier, the value of the element is one o
 @item "array"
 The identifier is an array.
 
+@item "builtin"
+The identifier is a built-in function.
+
 @item "extension"
 The identifier is an extension function loaded via
-@code{@@load}.
+@code{@@load} or @option{-l}.
 
 @item "scalar"
 The identifier is a scalar.
diff --git a/eval.c b/eval.c
index 16a928d0..5649797f 100644
--- a/eval.c
+++ b/eval.c
@@ -241,6 +241,7 @@ static const char *const nodetypes[] = {
 	"Node_func",
 	"Node_ext_func",
 	"Node_old_ext_func",
+	"Node_builtin_func",
 	"Node_array_ref",
 	"Node_array_tree",
 	"Node_array_leaf",
diff --git a/interpret.h b/interpret.h
index fee8136e..28804330 100644
--- a/interpret.h
+++ b/interpret.h
@@ -1039,12 +1039,13 @@ match_re:
 			}
 
 			if (f == NULL) {
+				fatal(_("`%s' is not a function, so it cannot be called indirectly"),
+						t1->stptr);
+			} else if (f->type == Node_builtin_func) {
 				int arg_count = (pc + 1)->expr_count;
 				builtin_func_t the_func = lookup_builtin(t1->stptr);
 				
-				if (the_func == NULL)
-					fatal(_("`%s' is not a user-defined function, so it cannot be called indirectly"),
-						t1->stptr);
+				assert(the_func != NULL);
 
 				/* call it */
 				r = the_func(arg_count);
diff --git a/main.c b/main.c
index 4ce39ba0..129382c1 100644
--- a/main.c
+++ b/main.c
@@ -705,6 +705,8 @@ out:
 	if (do_intl)
 		exit(EXIT_SUCCESS);
 
+	install_builtins();
+
 	if (do_lint)
 		shadow_funcs();
 
diff --git a/symbol.c b/symbol.c
index efb48c95..5add8968 100644
--- a/symbol.c
+++ b/symbol.c
@@ -307,7 +307,9 @@ install(char *name, NODE *parm, NODETYPE type)
 
 	if (type == Node_param_list) {
 		table = param_table;
-	} else if (type == Node_func || type == Node_ext_func) {
+	} else if (   type == Node_func
+		   || type == Node_ext_func
+		   || type == Node_builtin_func) {
 		table = func_table;
 	} else if (installing_specials) {
 		table = global_table;
@@ -320,7 +322,7 @@ install(char *name, NODE *parm, NODETYPE type)
 		r = make_symbol(name, type);
 		if (type == Node_func)
 			func_count++;
-		if (type != Node_ext_func && table != global_table)
+		if (type != Node_ext_func && type != Node_builtin_func && table != global_table)
 			var_count++;	/* total, includes Node_func */
 	}
 
@@ -393,7 +395,7 @@ get_symbols(SYMBOL_TYPE what, bool sort)
 
 		for (i = count = 0; i < max; i += 2) {
 			r = list[i+1];
-			if (r->type == Node_ext_func)
+			if (r->type == Node_ext_func || r->type == Node_builtin_func)
 				continue;
 			assert(r->type == Node_func);
 			table[count++] = r;
@@ -539,7 +541,7 @@ load_symbols()
 	NODE *sym_array;
 	NODE **aptr;
 	long i, j, max;
-	NODE *user, *extension, *untyped, *scalar, *array;
+	NODE *user, *extension, *untyped, *scalar, *array, *built_in;
 	NODE **list;
 	NODE *tables[4];
 
@@ -570,6 +572,7 @@ load_symbols()
 	scalar = make_string("scalar", 6);
 	untyped = make_string("untyped", 7);
 	array = make_string("array", 5);
+	built_in = make_string("builtin", 7);
 
 	for (i = 0; tables[i] != NULL; i++) {
 		list = assoc_list(tables[i], "@unsorted", ASORTI);
@@ -580,6 +583,7 @@ load_symbols()
 			r = list[j+1];
 			if (   r->type == Node_ext_func
 			    || r->type == Node_func
+			    || r->type == Node_builtin_func
 			    || r->type == Node_var
 			    || r->type == Node_var_array
 			    || r->type == Node_var_new) {
@@ -594,6 +598,9 @@ load_symbols()
 				case Node_func:
 					*aptr = dupnode(user);
 					break;
+				case Node_builtin_func:
+					*aptr = dupnode(built_in);
+					break;
 				case Node_var:
 					*aptr = dupnode(scalar);
 					break;
diff --git a/test/ChangeLog b/test/ChangeLog
index ae1232c6..fce42e04 100644
--- a/test/ChangeLog
+++ b/test/ChangeLog
@@ -7,6 +7,7 @@
 	Sort of related:
 
 	* indirectcall2.awk, indirectcall2.ok: New files.
+	* id.ok: Updated.
 
 2014-09-04         Arnold D. Robbins     <arnold@skeeve.com>
 
diff --git a/test/id.ok b/test/id.ok
index d31573de..a9f540e7 100644
--- a/test/id.ok
+++ b/test/id.ok
@@ -1,32 +1,72 @@
-FUNCTAB -> array
-ARGV -> array
-SYMTAB -> array
-ORS -> scalar
-ROUNDMODE -> scalar
-i -> untyped
 OFS -> scalar
+rand -> builtin
+ARGC -> scalar
+dcgettext -> builtin
+gsub -> builtin
+PREC -> scalar
+match -> builtin
+ARGIND -> scalar
+int -> builtin
 ERRNO -> scalar
+ARGV -> array
+log -> builtin
+sprintf -> builtin
+ROUNDMODE -> scalar
+strftime -> builtin
+systime -> builtin
+and -> builtin
+srand -> builtin
 FNR -> scalar
+asort -> builtin
+atan2 -> builtin
+cos -> builtin
+TEXTDOMAIN -> scalar
+ORS -> scalar
+split -> builtin
+RSTART -> scalar
+compl -> builtin
+bindtextdomain -> builtin
+exp -> builtin
+or -> builtin
+fflush -> builtin
+gensub -> builtin
 LINT -> scalar
+dcngettext -> builtin
+index -> builtin
 IGNORECASE -> scalar
-NR -> scalar
-function1 -> user
-ARGIND -> scalar
-NF -> scalar
-TEXTDOMAIN -> scalar
+system -> builtin
 CONVFMT -> scalar
+sqrt -> builtin
+rshift -> builtin
+tolower -> builtin
+FS -> scalar
+BINMODE -> scalar
+sin -> builtin
+asorti -> builtin
 FIELDWIDTHS -> scalar
-ARGC -> scalar
+function1 -> user
+FILENAME -> scalar
+close -> builtin
+mktime -> builtin
+FUNCTAB -> array
+NF -> scalar
+isarray -> builtin
 an_array -> untyped
-PROCINFO -> array
-PREC -> scalar
+patsplit -> builtin
+NR -> scalar
 SUBSEP -> scalar
-FPAT -> scalar
-RS -> scalar
-FS -> scalar
+extension -> builtin
+i -> untyped
+sub -> builtin
 OFMT -> scalar
 RLENGTH -> scalar
+substr -> builtin
+FPAT -> scalar
+RS -> scalar
+xor -> builtin
 RT -> scalar
-BINMODE -> scalar
-FILENAME -> scalar
-RSTART -> scalar
+PROCINFO -> array
+lshift -> builtin
+SYMTAB -> array
+strtonum -> builtin
+toupper -> builtin