Merge branch 'gawk-5.1-stable'

1 files changed, 533 insertions, 546 deletions

diff --git a/doc/gawk.info b/doc/gawk.info
index 22a15a62..258ddf71 100644
--- a/doc/gawk.info
+++ b/doc/gawk.info
@@ -4566,19 +4566,6 @@ value of 'RS' has no special effect: it is treated literally.  This is
 required for backwards compatibility with both Unix 'awk' and with
 POSIX.
 
-   When using regular characters as the record separator, there is one
-unusual case that occurs when 'gawk' is being fully POSIX-compliant
-(*note Options::).  Then, the following (extreme) pipeline prints a
-surprising '1':
-
-     $ echo | gawk --posix 'BEGIN { RS = "a" } ; { print NF }'
-     -| 1
-
-   There is one field, consisting of a newline.  The value of the
-built-in variable 'NF' is the number of fields in the current record.
-(In the normal case, 'gawk' treats the newline as whitespace, printing
-'0' as the result.  Most other versions of 'awk' also act this way.)
-
    Reaching the end of an input file terminates the current input
 record, even if the last character in the file is not the character in
 'RS'.  (d.c.)
@@ -35546,7 +35533,7 @@ Index
 * dark corner, escape sequences:         Other Arguments.     (line  46)
 * dark corner, escape sequences, for metacharacters: Escape Sequences.
                                                               (line 144)
-* dark corner, input files:              awk split records.   (line 117)
+* dark corner, input files:              awk split records.   (line 104)
 * dark corner, strings, storing:         gawk split records.  (line  86)
 * dark corner, NF variable, decrementing: Changing Fields.    (line 107)
 * dark corner, ^, in FS:                 Regexp Field Splitting.
@@ -35771,9 +35758,9 @@ Index
 * differences in awk and gawk, regular expressions: Case-sensitivity.
                                                               (line  26)
 * differences in awk and gawk, record separators: awk split records.
-                                                              (line 131)
+                                                              (line 118)
 * differences in awk and gawk, RS/RT variables: awk split records.
-                                                              (line 131)
+                                                              (line 118)
 * differences in awk and gawk, RS/RT variables <1>: gawk split records.
                                                               (line  58)
 * differences in awk and gawk, strings, storing: gawk split records.
@@ -36323,7 +36310,7 @@ Index
 * gawk, regular expressions, case sensitivity: Case-sensitivity.
                                                               (line  26)
 * gawk, IGNORECASE variable in:          Case-sensitivity.    (line  26)
-* gawk, RT variable in:                  awk split records.   (line 131)
+* gawk, RT variable in:                  awk split records.   (line 118)
 * gawk, RT variable in <1>:              gawk split records.  (line  58)
 * gawk, FIELDWIDTHS variable in:         Fixed width data.    (line  17)
 * gawk, FPAT variable in:                Splitting By Content.
@@ -36915,7 +36902,7 @@ Index
 * null strings, in gawk arguments, quoting and: Quoting.      (line  82)
 * null strings, in gawk arguments, quoting and <1>: Other Arguments.
                                                               (line  73)
-* null strings:                          awk split records.   (line 121)
+* null strings:                          awk split records.   (line 108)
 * null strings <1>:                      Regexp Field Splitting.
                                                               (line  43)
 * null strings, converting numbers to strings: Strings And Numbers.
@@ -37326,12 +37313,12 @@ Index
 * record separators, newlines as:        awk split records.   (line  12)
 * record separators, changing:           awk split records.   (line  85)
 * record separators, regular expressions as: awk split records.
-                                                              (line 131)
+                                                              (line 118)
 * record separators, with multiline records: Multiple Line.   (line  10)
 * record separators <1>:                 User-modified.       (line 136)
 * records:                               Reading Files.       (line  14)
 * records, splitting input into:         Records.             (line   6)
-* records, terminating:                  awk split records.   (line 131)
+* records, terminating:                  awk split records.   (line 118)
 * records, treating files as:            gawk split records.  (line  96)
 * records, multiline:                    Multiple Line.       (line   6)
 * records, printing:                     Print.               (line  22)
@@ -37381,7 +37368,7 @@ Index
                                                               (line  73)
 * regular expressions, case sensitivity: Case-sensitivity.    (line   6)
 * regular expressions, as record separators: awk split records.
-                                                              (line 131)
+                                                              (line 118)
 * regular expressions, as field separators: Field Separators. (line  50)
 * regular expressions, as field separators <1>: Regexp Field Splitting.
                                                               (line   6)
@@ -37442,7 +37429,7 @@ Index
 * rshift:                                Bitwise Functions.   (line  54)
 * RSTART variable:                       Auto-set.            (line 341)
 * RSTART variable, match() function and: String Functions.    (line 234)
-* RT variable:                           awk split records.   (line 131)
+* RT variable:                           awk split records.   (line 118)
 * RT variable <1>:                       gawk split records.  (line  58)
 * RT variable <2>:                       Multiple Line.       (line 139)
 * RT variable <3>:                       Auto-set.            (line 348)
@@ -37494,7 +37481,7 @@ Index
 * separators, for records:               awk split records.   (line   6)
 * separators, for records <1>:           awk split records.   (line  85)
 * separators, for records, regular expressions as: awk split records.
-                                                              (line 131)
+                                                              (line 118)
 * separators, field, FS variable and:    Default Field Splitting.
                                                               (line   6)
 * separators, for statements in actions: Action Overview.     (line  19)
@@ -37701,7 +37688,7 @@ Index
 * string-manipulation functions:         String Functions.    (line   6)
 * string-matching operators:             Regexp Usage.        (line  19)
 * string-translation functions:          I18N Functions.      (line   6)
-* strings, empty:                        awk split records.   (line 121)
+* strings, empty:                        awk split records.   (line 108)
 * strings, null:                         Regexp Field Splitting.
                                                               (line  43)
 * strings, length limitations:           Scalar Constants.    (line  20)
@@ -37754,7 +37741,7 @@ Index
 * tee utility:                           Tee Program.         (line   6)
 * tee.awk program:                       Tee Program.         (line  26)
 * temporary breakpoint:                  Breakpoint Control.  (line  90)
-* terminating records:                   awk split records.   (line 131)
+* terminating records:                   awk split records.   (line 118)
 * testbits.awk program:                  Bitwise Functions.   (line  69)
 * testext extension:                     Extension Sample API Tests.
                                                               (line   6)
@@ -38108,527 +38095,527 @@ Node: Regexp Summary199533
 Node: Reading Files200999
 Node: Records203268
 Node: awk split records204343
-Node: gawk split records209618
-Ref: gawk split records-Footnote-1214351
-Node: Fields214388
-Node: Nonconstant Fields217129
-Ref: Nonconstant Fields-Footnote-1219365
-Node: Changing Fields219569
-Node: Field Separators225600
-Node: Default Field Splitting228298
-Node: Regexp Field Splitting229416
-Node: Single Character Fields232769
-Node: Command Line Field Separator233829
-Node: Full Line Fields237047
-Ref: Full Line Fields-Footnote-1238569
-Ref: Full Line Fields-Footnote-2238615
-Node: Field Splitting Summary238716
-Node: Constant Size240790
-Node: Fixed width data241522
-Node: Skipping intervening244989
-Node: Allowing trailing data245787
-Node: Fields with fixed data246824
-Node: Splitting By Content248342
-Ref: Splitting By Content-Footnote-1252125
-Node: More CSV252288
-Node: Testing field creation253598
-Node: Multiple Line255223
-Node: Getline261500
-Node: Plain Getline263969
-Node: Getline/Variable266542
-Node: Getline/File267693
-Node: Getline/Variable/File269081
-Ref: Getline/Variable/File-Footnote-1270686
-Node: Getline/Pipe270774
-Node: Getline/Variable/Pipe273478
-Node: Getline/Coprocess274613
-Node: Getline/Variable/Coprocess275880
-Node: Getline Notes276622
-Node: Getline Summary279419
-Ref: table-getline-variants279843
-Node: Read Timeout280591
-Ref: Read Timeout-Footnote-1284497
-Node: Retrying Input284555
-Node: Command-line directories285754
-Node: Input Summary286660
-Node: Input Exercises289832
-Node: Printing290266
-Node: Print292100
-Node: Print Examples293557
-Node: Output Separators296337
-Node: OFMT298354
-Node: Printf299710
-Node: Basic Printf300495
-Node: Control Letters302069
-Node: Format Modifiers307231
-Node: Printf Examples313246
-Node: Redirection315732
-Node: Special FD322573
-Ref: Special FD-Footnote-1325741
-Node: Special Files325815
-Node: Other Inherited Files326432
-Node: Special Network327433
-Node: Special Caveats328293
-Node: Close Files And Pipes329242
-Ref: table-close-pipe-return-values336149
-Ref: Close Files And Pipes-Footnote-1336962
-Ref: Close Files And Pipes-Footnote-2337110
-Node: Nonfatal337262
-Node: Output Summary339600
-Node: Output Exercises340822
-Node: Expressions341501
-Node: Values342689
-Node: Constants343367
-Node: Scalar Constants344058
-Ref: Scalar Constants-Footnote-1346568
-Node: Nondecimal-numbers346818
-Node: Regexp Constants349819
-Node: Using Constant Regexps350345
-Node: Standard Regexp Constants350967
-Node: Strong Regexp Constants354155
-Node: Variables357167
-Node: Using Variables357824
-Node: Assignment Options359734
-Node: Conversion362205
-Node: Strings And Numbers362729
-Ref: Strings And Numbers-Footnote-1365792
-Node: Locale influences conversions365901
-Ref: table-locale-affects368659
-Node: All Operators369277
-Node: Arithmetic Ops369906
-Node: Concatenation372622
-Ref: Concatenation-Footnote-1375469
-Node: Assignment Ops375576
-Ref: table-assign-ops380567
-Node: Increment Ops381880
-Node: Truth Values and Conditions385340
-Node: Truth Values386414
-Node: Typing and Comparison387462
-Node: Variable Typing388282
-Ref: Variable Typing-Footnote-1394745
-Ref: Variable Typing-Footnote-2394817
-Node: Comparison Operators394894
-Ref: table-relational-ops395313
-Node: POSIX String Comparison398808
-Ref: POSIX String Comparison-Footnote-1400503
-Ref: POSIX String Comparison-Footnote-2400642
-Node: Boolean Ops400726
-Ref: Boolean Ops-Footnote-1405208
-Node: Conditional Exp405300
-Node: Function Calls407036
-Node: Precedence410913
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-Node: Expressions Summary416204
-Node: Patterns and Actions418777
-Node: Pattern Overview419897
-Node: Regexp Patterns421574
-Node: Expression Patterns422116
-Node: Ranges425897
-Node: BEGIN/END429005
-Node: Using BEGIN/END429766
-Ref: Using BEGIN/END-Footnote-1432520
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-Node: BEGINFILE/ENDFILE434939
-Node: Empty438170
-Node: Using Shell Variables438487
-Node: Action Overview440761
-Node: Statements443086
-Node: If Statement444934
-Node: While Statement446429
-Node: Do Statement448457
-Node: For Statement449605
-Node: Switch Statement452776
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-Node: Continue Statement457309
-Node: Next Statement459136
-Node: Nextfile Statement461519
-Node: Exit Statement464208
-Node: Built-in Variables466611
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-Node: Auto-set475511
-Ref: Auto-set-Footnote-1492318
-Ref: Auto-set-Footnote-2492524
-Node: ARGC and ARGV492580
-Node: Pattern Action Summary496793
-Node: Arrays499223
-Node: Array Basics500552
-Node: Array Intro501396
-Ref: figure-array-elements503371
-Ref: Array Intro-Footnote-1506075
-Node: Reference to Elements506203
-Node: Assigning Elements508667
-Node: Array Example509158
-Node: Scanning an Array510917
-Node: Controlling Scanning513939
-Ref: Controlling Scanning-Footnote-1520395
-Node: Numeric Array Subscripts520711
-Node: Uninitialized Subscripts522895
-Node: Delete524514
-Ref: Delete-Footnote-1527266
-Node: Multidimensional527323
-Node: Multiscanning530418
-Node: Arrays of Arrays532009
-Node: Arrays Summary536777
-Node: Functions538870
-Node: Built-in539908
-Node: Calling Built-in540989
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-Ref: Numeric Functions-Footnote-1547011
-Ref: Numeric Functions-Footnote-2547659
-Ref: Numeric Functions-Footnote-3547707
-Node: String Functions547979
-Ref: String Functions-Footnote-1572120
-Ref: String Functions-Footnote-2572248
-Ref: String Functions-Footnote-3572496
-Node: Gory Details572583
-Ref: table-sub-escapes574374
-Ref: table-sub-proposed575893
-Ref: table-posix-sub577256
-Ref: table-gensub-escapes578797
-Ref: Gory Details-Footnote-1579620
-Node: I/O Functions579774
-Ref: table-system-return-values586228
-Ref: I/O Functions-Footnote-1588308
-Ref: I/O Functions-Footnote-2588456
-Node: Time Functions588576
-Ref: Time Functions-Footnote-1599247
-Ref: Time Functions-Footnote-2599315
-Ref: Time Functions-Footnote-3599473
-Ref: Time Functions-Footnote-4599584
-Ref: Time Functions-Footnote-5599696
-Ref: Time Functions-Footnote-6599923
-Node: Bitwise Functions600189
-Ref: table-bitwise-ops600783
-Ref: Bitwise Functions-Footnote-1606846
-Ref: Bitwise Functions-Footnote-2607019
-Node: Type Functions607210
-Node: I18N Functions610073
-Node: User-defined611724
-Node: Definition Syntax612536
-Ref: Definition Syntax-Footnote-1618230
-Node: Function Example618301
-Ref: Function Example-Footnote-1621223
-Node: Function Calling621245
-Node: Calling A Function621833
-Node: Variable Scope622791
-Node: Pass By Value/Reference625785
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-Ref: Function Caveats-Footnote-1630476
-Node: Return Statement630596
-Node: Dynamic Typing633575
-Node: Indirect Calls634505
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-Node: Functions Summary644885
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-Ref: Library Functions-Footnote-2651340
-Node: Library Names651511
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-Ref: Library Names-Footnote-2655401
-Node: General Functions655487
-Node: Strtonum Function656590
-Node: Assert Function659612
-Node: Round Function662938
-Node: Cliff Random Function664478
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-Ref: Ordinal Functions-Footnote-1668557
-Ref: Ordinal Functions-Footnote-2668809
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-Ref: Join Function-Footnote-1670789
-Node: Getlocaltime Function670989
-Node: Readfile Function674731
-Node: Shell Quoting676708
-Node: Data File Management678109
-Node: Filetrans Function678741
-Node: Rewind Function682837
-Node: File Checking684746
-Ref: File Checking-Footnote-1686080
-Node: Empty Files686281
-Node: Ignoring Assigns688260
-Node: Getopt Function689810
-Ref: Getopt Function-Footnote-1705021
-Node: Passwd Functions705221
-Ref: Passwd Functions-Footnote-1714060
-Node: Group Functions714148
-Ref: Group Functions-Footnote-1722046
-Node: Walking Arrays722253
-Node: Library Functions Summary725261
-Node: Library Exercises726667
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-Node: Running Examples727902
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-Node: Cut Program729854
-Node: Egrep Program739994
-Node: Id Program749005
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-Ref: Split Program-Footnote-1768842
-Node: Tee Program769015
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-Node: Bytes vs. Characters779790
-Node: Using extensions781338
-Node: wc program782092
-Node: Miscellaneous Programs786957
-Node: Dupword Program788170
-Node: Alarm Program790200
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-Ref: Translate Program-Footnote-1799620
-Node: Labels Program799890
-Ref: Labels Program-Footnote-1803241
-Node: Word Sorting803325
-Node: History Sorting807397
-Node: Extract Program809622
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-Node: Igawk Program820750
-Ref: Igawk Program-Footnote-1835081
-Ref: Igawk Program-Footnote-2835283
-Ref: Igawk Program-Footnote-3835405
-Node: Anagram Program835520
-Node: Signature Program838582
-Node: Programs Summary839829
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-Ref: Programs Exercises-Footnote-1845173
-Node: Advanced Features845259
-Node: Nondecimal Data847326
-Node: Array Sorting848917
-Node: Controlling Array Traversal849617
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-Node: Array Sorting Functions858103
-Ref: Array Sorting Functions-Footnote-1863194
-Node: Two-way I/O863390
-Ref: Two-way I/O-Footnote-1871111
-Ref: Two-way I/O-Footnote-2871298
-Node: TCP/IP Networking871380
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-Ref: Explaining gettext-Footnote-1895316
-Ref: Explaining gettext-Footnote-2895501
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-Node: Translator i18n900664
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-Node: Printf Ordering902676
-Ref: Printf Ordering-Footnote-1905462
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-Node: I18N Example908045
-Ref: I18N Example-Footnote-1911320
-Ref: I18N Example-Footnote-2911393
-Node: Gawk I18N911502
-Node: I18N Summary912151
-Node: Debugger913492
-Node: Debugging914492
-Node: Debugging Concepts914933
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-Node: Awk Debugging919317
-Ref: Awk Debugging-Footnote-1920262
-Node: Sample Debugging Session920394
-Node: Debugger Invocation920928
-Node: Finding The Bug922314
-Node: List of Debugger Commands928788
-Node: Breakpoint Control930121
-Node: Debugger Execution Control933815
-Node: Viewing And Changing Data937177
-Node: Execution Stack940718
-Node: Debugger Info942355
-Node: Miscellaneous Debugger Commands946426
-Node: Readline Support951488
-Node: Limitations952384
-Node: Debugging Summary954938
-Node: Namespaces956217
-Node: Global Namespace957328
-Node: Qualified Names958726
-Node: Default Namespace959725
-Node: Changing The Namespace960466
-Node: Naming Rules962080
-Node: Internal Name Management963928
-Node: Namespace Example964970
-Node: Namespace And Features967532
-Node: Namespace Summary968967
-Node: Arbitrary Precision Arithmetic970444
-Node: Computer Arithmetic971931
-Ref: table-numeric-ranges975697
-Ref: table-floating-point-ranges976190
-Ref: Computer Arithmetic-Footnote-1976848
-Node: Math Definitions976905
-Ref: table-ieee-formats979881
-Node: MPFR features980448
-Node: FP Math Caution982166
-Ref: FP Math Caution-Footnote-1983238
-Node: Inexactness of computations983607
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-Node: Comparing FP Values985998
-Node: Errors accumulate987239
-Node: Strange values988695
-Ref: Strange values-Footnote-1991283
-Node: Getting Accuracy991388
-Node: Try To Round994098
-Node: Setting precision994997
-Ref: table-predefined-precision-strings995694
-Node: Setting the rounding mode997524
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-Node: Floating point summary1011129
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-Node: Extension API Functions Introduction1023806
-Ref: table-api-std-headers1025642
-Node: General Data Types1029891
-Ref: General Data Types-Footnote-11038521
-Node: Memory Allocation Functions1038820
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-Node: Constructor Functions1043420
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-Node: Extension Functions1048899
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-Ref: Symbol table by name-Footnote-11084141
-Node: Symbol table by cookie1084269
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-Node: History summary1220464
-Node: Installation1221844
-Node: Gawk Distribution1222788
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-Node: Extracting1224235
-Node: Distribution contents1225873
-Node: Unix Installation1232353
-Node: Quick Installation1233035
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-Node: Additional Configuration Options1236538
-Node: Configuration Philosophy1238853
-Node: Non-Unix Installation1241222
-Node: PC Installation1241682
-Node: PC Binary Installation1242520
-Node: PC Compiling1242955
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-Node: Cygwin1247625
-Node: MSYS1248849
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-Node: Bug address1261615
-Node: Usenet1264597
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-Node: Installation summary1273874
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-Node: Accessing The Source1277584
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-Node: Extension Other Design Decisions1304162
-Node: Extension Future Growth1306275
-Node: Notes summary1306881
-Node: Basic Concepts1308039
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+Node: GNU Free Documentation License1385354
+Node: Index1410474
 
 End Tag Table