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[SCM] gawk branch, gawk-5.1-stable, updated. gawk-4.1.0-4186-gb051339

From: Arnold Robbins
Subject: [SCM] gawk branch, gawk-5.1-stable, updated. gawk-4.1.0-4186-gb051339
Date: Sat, 26 Dec 2020 13:48:21 -0500 (EST)

This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "gawk".

The branch, gawk-5.1-stable has been updated
       via  b051339682f46be6d3cde3d744409e7b4e077167 (commit)
       via  f7a69176569a76daab7b772157a76ddb8f85e046 (commit)
       via  daaaab1ae680cbaf6575741c314a19ae9d57ef8f (commit)
      from  e1be14cd37e0c6c58284e18c859e334d1b5fa97f (commit)

Those revisions listed above that are new to this repository have
not appeared on any other notification email; so we list those
revisions in full, below.

- Log -----------------------------------------------------------------

commit b051339682f46be6d3cde3d744409e7b4e077167
Author: Arnold D. Robbins <>
Date:   Sat Dec 26 20:48:01 2020 +0200

    New test - fpat9.

diff --git a/pc/ChangeLog b/pc/ChangeLog
index 2c0b8b3..c954002 100644
--- a/pc/ChangeLog
+++ b/pc/ChangeLog
@@ -1,3 +1,7 @@
+2020-12-26         Arnold D. Robbins     <>
+       * Makefile.tst: Rebuilt.
 2020-12-20         Arnold D. Robbins     <>
        * Makefile.tst: Rebuilt.
diff --git a/pc/Makefile.tst b/pc/Makefile.tst
index 0d5cef1..890c2ff 100644
--- a/pc/Makefile.tst
+++ b/pc/Makefile.tst
@@ -197,7 +197,7 @@ GAWK_EXT_TESTS = \
        dbugeval dbugeval2 dbugeval3 dbugtypedre1 dbugtypedre2 delsub \
        devfd devfd1 devfd2 dfacheck1 dumpvars \
        errno exit fieldwdth forcenum \
-       fpat1 fpat2 fpat3 fpat4 fpat5 fpat6 fpat7 fpat8 fpatnull \
+       fpat1 fpat2 fpat3 fpat4 fpat5 fpat6 fpat7 fpat8 fpat9 fpatnull \
        fsfwfs funlen functab1 functab2 functab3 \
        fwtest fwtest2 fwtest3 fwtest4 fwtest5 fwtest6 fwtest7 fwtest8 \
        genpot gensub gensub2 gensub3 getlndir gnuops2 gnuops3 gnureops gsubind 
@@ -2707,6 +2707,11 @@ fpat8:
        @AWKPATH="$(srcdir)" $(AWK) -f $@.awk  < "$(srcdir)"/$ >_$@ 2>&1 || 
echo EXIT CODE: $$? >>_$@
        @-$(CMP) "$(srcdir)"/$@.ok _$@ && rm -f _$@
+       @echo $@
+       @AWKPATH="$(srcdir)" $(AWK) -f $@.awk  < "$(srcdir)"/$ >_$@ 2>&1 || 
echo EXIT CODE: $$? >>_$@
+       @-$(CMP) "$(srcdir)"/$@.ok _$@ && rm -f _$@
        @echo $@
        @AWKPATH="$(srcdir)" $(AWK) -f $@.awk  < "$(srcdir)"/$ >_$@ 2>&1 || 
echo EXIT CODE: $$? >>_$@
diff --git a/test/ b/test/
index 097dc26..2b1f141 100644
--- a/test/
+++ b/test/
@@ -376,6 +376,9 @@ EXTRA_DIST = \
        fpat8.awk \ \
        fpat8.ok \
+       fpat9.awk \
+ \
+       fpat9.ok \
        fpatnull.awk \ \
        fpatnull.ok \
@@ -1424,7 +1427,7 @@ GAWK_EXT_TESTS = \
        dbugeval dbugeval2 dbugeval3 dbugtypedre1 dbugtypedre2 delsub \
        devfd devfd1 devfd2 dfacheck1 dumpvars \
        errno exit fieldwdth forcenum \
-       fpat1 fpat2 fpat3 fpat4 fpat5 fpat6 fpat7 fpat8 fpatnull \
+       fpat1 fpat2 fpat3 fpat4 fpat5 fpat6 fpat7 fpat8 fpat9 fpatnull \
        fsfwfs funlen functab1 functab2 functab3 \
        fwtest fwtest2 fwtest3 fwtest4 fwtest5 fwtest6 fwtest7 fwtest8 \
        genpot gensub gensub2 gensub3 getlndir gnuops2 gnuops3 gnureops gsubind 
diff --git a/test/ b/test/
index 871e5a4..b96b7d0 100644
--- a/test/
+++ b/test/
@@ -639,6 +639,9 @@ EXTRA_DIST = \
        fpat8.awk \ \
        fpat8.ok \
+       fpat9.awk \
+ \
+       fpat9.ok \
        fpatnull.awk \ \
        fpatnull.ok \
@@ -1687,7 +1690,7 @@ GAWK_EXT_TESTS = \
        dbugeval dbugeval2 dbugeval3 dbugtypedre1 dbugtypedre2 delsub \
        devfd devfd1 devfd2 dfacheck1 dumpvars \
        errno exit fieldwdth forcenum \
-       fpat1 fpat2 fpat3 fpat4 fpat5 fpat6 fpat7 fpat8 fpatnull \
+       fpat1 fpat2 fpat3 fpat4 fpat5 fpat6 fpat7 fpat8 fpat9 fpatnull \
        fsfwfs funlen functab1 functab2 functab3 \
        fwtest fwtest2 fwtest3 fwtest4 fwtest5 fwtest6 fwtest7 fwtest8 \
        genpot gensub gensub2 gensub3 getlndir gnuops2 gnuops3 gnureops gsubind 
@@ -4366,6 +4369,11 @@ fpat8:
        @AWKPATH="$(srcdir)" $(AWK) -f $@.awk  < "$(srcdir)"/$ >_$@ 2>&1 || 
echo EXIT CODE: $$? >>_$@
        @-$(CMP) "$(srcdir)"/$@.ok _$@ && rm -f _$@
+       @echo $@
+       @AWKPATH="$(srcdir)" $(AWK) -f $@.awk  < "$(srcdir)"/$ >_$@ 2>&1 || 
echo EXIT CODE: $$? >>_$@
+       @-$(CMP) "$(srcdir)"/$@.ok _$@ && rm -f _$@
        @echo $@
        @AWKPATH="$(srcdir)" $(AWK) -f $@.awk  < "$(srcdir)"/$ >_$@ 2>&1 || 
echo EXIT CODE: $$? >>_$@
diff --git a/test/Maketests b/test/Maketests
index 90599c4..363a275 100644
--- a/test/Maketests
+++ b/test/Maketests
@@ -1451,6 +1451,11 @@ fpat8:
        @AWKPATH="$(srcdir)" $(AWK) -f $@.awk  < "$(srcdir)"/$ >_$@ 2>&1 || 
echo EXIT CODE: $$? >>_$@
        @-$(CMP) "$(srcdir)"/$@.ok _$@ && rm -f _$@
+       @echo $@
+       @AWKPATH="$(srcdir)" $(AWK) -f $@.awk  < "$(srcdir)"/$ >_$@ 2>&1 || 
echo EXIT CODE: $$? >>_$@
+       @-$(CMP) "$(srcdir)"/$@.ok _$@ && rm -f _$@
        @echo $@
        @AWKPATH="$(srcdir)" $(AWK) -f $@.awk  < "$(srcdir)"/$ >_$@ 2>&1 || 
echo EXIT CODE: $$? >>_$@
diff --git a/test/fpat9.awk b/test/fpat9.awk
new file mode 100644
index 0000000..06142b8
--- /dev/null
+++ b/test/fpat9.awk
@@ -0,0 +1,22 @@
+#! /bin/gawk  -f
+# Modified version of program from Arthur Schwarz <>.
+BEGIN {                                         # program constants
+         FPAT         = "([^,]*)|(\"([^\"]|\"\")+\")" # CSV field separator
+         print "FPAT = ", FPAT;
+        print "------------------------------------------------\n"
+        print $0;
+        printf("%3d:   \n", NF);
+        for (i = 1; i <= NF; i++) {
+           if (substr($i, 1, 1) == "\"") {
+              len = length($i)         # BUG FIX, was length($1)
+              $i = substr($i, 2, len - 2);
+            gsub(/""/, "\"", $i)       # embedded "" --> "
+           }
+           printf("      <%d: %s>\n", i, $i);
+        }
+        print " ";
diff --git a/test/ b/test/
new file mode 100644
index 0000000..70440d8
--- /dev/null
+++ b/test/
@@ -0,0 +1,7 @@
+"line 1",,,"http://file.a/A%20Guide%20";
+"line 2",,,"https://www.whitgt.pdf";
+"line 3, and xyz",,,"http://www.c/main.pdf";
+"line 4 "" and abc",,,http://file.a/A%20Guide%20
+line 5,,,https://www.whitgt.pdf
+line 6,,,http://file.a/A%20Guide%20
diff --git a/test/fpat9.ok b/test/fpat9.ok
new file mode 100644
index 0000000..e1f705e
--- /dev/null
+++ b/test/fpat9.ok
@@ -0,0 +1,64 @@
+FPAT =  ([^,]*)|("([^"]|"")+")
+  4:   
+      <1: PDQ>
+      <2: >
+      <3: >
+      <4: >
+"line 1",,,"http://file.a/A%20Guide%20";
+  4:   
+      <1: line 1>
+      <2: >
+      <3: >
+      <4: http://file.a/A%20Guide%20>
+"line 2",,,"https://www.whitgt.pdf";
+  4:   
+      <1: line 2>
+      <2: >
+      <3: >
+      <4: https://www.whitgt.pdf>
+"line 3, and xyz",,,"http://www.c/main.pdf";
+  4:   
+      <1: line 3, and xyz>
+      <2: >
+      <3: >
+      <4: http://www.c/main.pdf>
+"line 4 "" and abc",,,http://file.a/A%20Guide%20
+  4:   
+      <1: line 4 " and abc>
+      <2: >
+      <3: >
+      <4: http://file.a/A%20Guide%20>
+line 5,,,https://www.whitgt.pdf
+  4:   
+      <1: line 5>
+      <2: >
+      <3: >
+      <4: https://www.whitgt.pdf>
+line 6,,,http://file.a/A%20Guide%20
+  4:   
+      <1: line 6>
+      <2: >
+      <3: >
+      <4: http://file.a/A%20Guide%20>

commit f7a69176569a76daab7b772157a76ddb8f85e046
Author: Arnold D. Robbins <>
Date:   Sat Dec 26 20:47:32 2020 +0200

    Doc updates.

diff --git a/doc/ChangeLog b/doc/ChangeLog
index 39d32ce..b895545 100644
--- a/doc/ChangeLog
+++ b/doc/ChangeLog
@@ -1,3 +1,8 @@
+2020-12-26         Arnold D. Robbins     <>
+       * (More CSV): Add indexing and reference to
+       Manuel Collado's CSVMODE library.
 2020-12-07         Arnold D. Robbins     <>
        * (awk split records): Remove the bit about POSIX
diff --git a/doc/ b/doc/
index 7a01d25..84aaf43 100644
--- a/doc/
+++ b/doc/
@@ -5662,6 +5662,11 @@ And here is his test program:
      -| <p,,s>
      -| NF = 3 <p><><s>
+   In general, using 'FPAT' to do your own CSV parsing is like having a
+bed with a blanket that's not quite big enough.  There's always a corner
+that isn't covered.  We recommend, instead, that you use Manuel
+Collado's 'CSVMODE' library for 'gawk' (
 File:,  Node: Testing field creation,  Next: Multiple Line,  Prev: 
Splitting By Content,  Up: Reading Files
@@ -35339,6 +35344,7 @@ Index
 * Close, Diane <1>:                      Contributors.        (line  21)
 * Collado, Manuel:                       Acknowledgments.     (line  60)
 * Collado, Manuel <1>:                   More CSV.            (line   6)
+* Collado, Manuel <2>:                   More CSV.            (line  52)
 * collating elements:                    Bracket Expressions. (line  90)
 * collating symbols:                     Bracket Expressions. (line  97)
 * Colombo, Antonio:                      Acknowledgments.     (line  60)
@@ -35348,6 +35354,10 @@ Index
 * columns, aligning:                     Print Examples.      (line  69)
 * columns, cutting:                      Cut Program.         (line   6)
 * comma (,), in range patterns:          Ranges.              (line   6)
+* Comma separated values (CSV) data, parsing with FPAT: Splitting By Content.
+                                                              (line  19)
+* Comma separated values (CSV) data, parsing with FPAT library: More CSV.
+                                                              (line  52)
 * command completion, in debugger:       Readline Support.    (line   6)
 * command line, formats:                 Running gawk.        (line  12)
 * command line, option -f:               Long.                (line  12)
@@ -35463,6 +35473,11 @@ Index
 * csh utility:                           Statements/Lines.    (line  45)
 * csh utility, POSIXLY_CORRECT environment variable: Options. (line 406)
 * csh utility, |& operator, comparison with: Two-way I/O.     (line  27)
+* CSV (comma separated values) data, parsing with FPAT: Splitting By Content.
+                                                              (line  19)
+* CSV (comma separated values) data, parsing with CSVMODE library: More CSV.
+                                                              (line  52)
+* CSVMODE library for gawk:              More CSV.            (line  52)
 * ctime() user-defined function:         Function Example.    (line  74)
 * Curreli, Marco:                        Contributors.        (line 147)
 * currency symbols, localization:        Explaining gettext.  (line 104)
@@ -38071,503 +38086,503 @@ Node: Fields with fixed data246170
 Node: Splitting By Content247688
 Ref: Splitting By Content-Footnote-1251471
 Node: More CSV251634
-Node: Testing field creation252944
-Node: Multiple Line254569
-Node: Getline260846
-Node: Plain Getline263315
-Node: Getline/Variable265888
-Node: Getline/File267039
-Node: Getline/Variable/File268427
-Ref: Getline/Variable/File-Footnote-1270032
-Node: Getline/Pipe270120
-Node: Getline/Variable/Pipe272824
-Node: Getline/Coprocess273959
-Node: Getline/Variable/Coprocess275226
-Node: Getline Notes275968
-Node: Getline Summary278765
-Ref: table-getline-variants279189
-Node: Read Timeout279937
-Ref: Read Timeout-Footnote-1283843
-Node: Retrying Input283901
-Node: Command-line directories285100
-Node: Input Summary286006
-Node: Input Exercises289178
-Node: Printing289612
-Node: Print291446
-Node: Print Examples292903
-Node: Output Separators295683
-Node: OFMT297700
-Node: Printf299056
-Node: Basic Printf299841
-Node: Control Letters301415
-Node: Format Modifiers306579
-Node: Printf Examples312594
-Node: Redirection315080
-Node: Special FD321921
-Ref: Special FD-Footnote-1325089
-Node: Special Files325163
-Node: Other Inherited Files325780
-Node: Special Network326781
-Node: Special Caveats327641
-Node: Close Files And Pipes328590
-Ref: table-close-pipe-return-values335497
-Ref: Close Files And Pipes-Footnote-1336310
-Ref: Close Files And Pipes-Footnote-2336458
-Node: Nonfatal336610
-Node: Output Summary338948
-Node: Output Exercises340170
-Node: Expressions340849
-Node: Values342037
-Node: Constants342715
-Node: Scalar Constants343406
-Ref: Scalar Constants-Footnote-1345916
-Node: Nondecimal-numbers346166
-Node: Regexp Constants349167
-Node: Using Constant Regexps349693
-Node: Standard Regexp Constants350315
-Node: Strong Regexp Constants353503
-Node: Variables356515
-Node: Using Variables357172
-Node: Assignment Options359082
-Node: Conversion361553
-Node: Strings And Numbers362077
-Ref: Strings And Numbers-Footnote-1365140
-Node: Locale influences conversions365249
-Ref: table-locale-affects368007
-Node: All Operators368625
-Node: Arithmetic Ops369254
-Node: Concatenation371970
-Ref: Concatenation-Footnote-1374817
-Node: Assignment Ops374924
-Ref: table-assign-ops379915
-Node: Increment Ops381228
-Node: Truth Values and Conditions384688
-Node: Truth Values385762
-Node: Typing and Comparison386810
-Node: Variable Typing387630
-Ref: Variable Typing-Footnote-1394093
-Ref: Variable Typing-Footnote-2394165
-Node: Comparison Operators394242
-Ref: table-relational-ops394661
-Node: POSIX String Comparison398156
-Ref: POSIX String Comparison-Footnote-1399851
-Ref: POSIX String Comparison-Footnote-2399990
-Node: Boolean Ops400074
-Ref: Boolean Ops-Footnote-1404556
-Node: Conditional Exp404648
-Node: Function Calls406384
-Node: Precedence410261
-Node: Locales413920
-Node: Expressions Summary415552
-Node: Patterns and Actions418125
-Node: Pattern Overview419245
-Node: Regexp Patterns420922
-Node: Expression Patterns421464
-Node: Ranges425245
-Node: BEGIN/END428353
-Node: Using BEGIN/END429114
-Ref: Using BEGIN/END-Footnote-1431868
-Node: I/O And BEGIN/END431974
-Node: Empty437518
-Node: Using Shell Variables437835
-Node: Action Overview440109
-Node: Statements442434
-Node: If Statement444282
-Node: While Statement445777
-Node: Do Statement447805
-Node: For Statement448953
-Node: Switch Statement452124
-Node: Break Statement454565
-Node: Continue Statement456657
-Node: Next Statement458484
-Node: Nextfile Statement460867
-Node: Exit Statement463556
-Node: Built-in Variables465959
-Node: User-modified467092
-Node: Auto-set474859
-Ref: Auto-set-Footnote-1491666
-Ref: Auto-set-Footnote-2491872
-Node: ARGC and ARGV491928
-Node: Pattern Action Summary496141
-Node: Arrays498571
-Node: Array Basics499900
-Node: Array Intro500744
-Ref: figure-array-elements502719
-Ref: Array Intro-Footnote-1505423
-Node: Reference to Elements505551
-Node: Assigning Elements508015
-Node: Array Example508506
-Node: Scanning an Array510265
-Node: Controlling Scanning513287
-Ref: Controlling Scanning-Footnote-1519743
-Node: Numeric Array Subscripts520059
-Node: Uninitialized Subscripts522243
-Node: Delete523862
-Ref: Delete-Footnote-1526614
-Node: Multidimensional526671
-Node: Multiscanning529766
-Node: Arrays of Arrays531357
-Node: Arrays Summary536125
-Node: Functions538218
-Node: Built-in539256
-Node: Calling Built-in540337
-Node: Numeric Functions542333
-Ref: Numeric Functions-Footnote-1546361
-Ref: Numeric Functions-Footnote-2547009
-Ref: Numeric Functions-Footnote-3547057
-Node: String Functions547329
-Ref: String Functions-Footnote-1571470
-Ref: String Functions-Footnote-2571598
-Ref: String Functions-Footnote-3571846
-Node: Gory Details571933
-Ref: table-sub-escapes573724
-Ref: table-sub-proposed575243
-Ref: table-posix-sub576606
-Ref: table-gensub-escapes578147
-Ref: Gory Details-Footnote-1578970
-Node: I/O Functions579124
-Ref: table-system-return-values585578
-Ref: I/O Functions-Footnote-1587658
-Ref: I/O Functions-Footnote-2587806
-Node: Time Functions587926
-Ref: Time Functions-Footnote-1598597
-Ref: Time Functions-Footnote-2598665
-Ref: Time Functions-Footnote-3598823
-Ref: Time Functions-Footnote-4598934
-Ref: Time Functions-Footnote-5599046
-Ref: Time Functions-Footnote-6599273
-Node: Bitwise Functions599539
-Ref: table-bitwise-ops600133
-Ref: Bitwise Functions-Footnote-1606196
-Ref: Bitwise Functions-Footnote-2606369
-Node: Type Functions606560
-Node: I18N Functions609423
-Node: User-defined611074
-Node: Definition Syntax611886
-Ref: Definition Syntax-Footnote-1617580
-Node: Function Example617651
-Ref: Function Example-Footnote-1620573
-Node: Function Calling620595
-Node: Calling A Function621183
-Node: Variable Scope622141
-Node: Pass By Value/Reference625135
-Node: Function Caveats627779
-Ref: Function Caveats-Footnote-1629826
-Node: Return Statement629946
-Node: Dynamic Typing632925
-Node: Indirect Calls633855
-Ref: Indirect Calls-Footnote-1644107
-Node: Functions Summary644235
-Node: Library Functions646940
-Ref: Library Functions-Footnote-1650547
-Ref: Library Functions-Footnote-2650690
-Node: Library Names650861
-Ref: Library Names-Footnote-1654528
-Ref: Library Names-Footnote-2654751
-Node: General Functions654837
-Node: Strtonum Function655940
-Node: Assert Function658962
-Node: Round Function662288
-Node: Cliff Random Function663828
-Node: Ordinal Functions664844
-Ref: Ordinal Functions-Footnote-1667907
-Ref: Ordinal Functions-Footnote-2668159
-Node: Join Function668369
-Ref: Join Function-Footnote-1670139
-Node: Getlocaltime Function670339
-Node: Readfile Function674081
-Node: Shell Quoting676058
-Node: Data File Management677459
-Node: Filetrans Function678091
-Node: Rewind Function682187
-Node: File Checking684096
-Ref: File Checking-Footnote-1685430
-Node: Empty Files685631
-Node: Ignoring Assigns687610
-Node: Getopt Function689160
-Ref: Getopt Function-Footnote-1704371
-Node: Passwd Functions704571
-Ref: Passwd Functions-Footnote-1713410
-Node: Group Functions713498
-Ref: Group Functions-Footnote-1721396
-Node: Walking Arrays721603
-Node: Library Functions Summary724611
-Node: Library Exercises726017
-Node: Sample Programs726482
-Node: Running Examples727252
-Node: Clones727980
-Node: Cut Program729204
-Node: Egrep Program739344
-Node: Id Program748355
-Node: Split Program758302
-Ref: Split Program-Footnote-1768192
-Node: Tee Program768365
-Node: Uniq Program771155
-Node: Wc Program778743
-Node: Bytes vs. Characters779140
-Node: Using extensions780688
-Node: wc program781442
-Node: Miscellaneous Programs786307
-Node: Dupword Program787520
-Node: Alarm Program789550
-Node: Translate Program794405
-Ref: Translate Program-Footnote-1798970
-Node: Labels Program799240
-Ref: Labels Program-Footnote-1802591
-Node: Word Sorting802675
-Node: History Sorting806747
-Node: Extract Program808972
-Node: Simple Sed817026
-Node: Igawk Program820100
-Ref: Igawk Program-Footnote-1834431
-Ref: Igawk Program-Footnote-2834633
-Ref: Igawk Program-Footnote-3834755
-Node: Anagram Program834870
-Node: Signature Program837932
-Node: Programs Summary839179
-Node: Programs Exercises840393
-Ref: Programs Exercises-Footnote-1844523
-Node: Advanced Features844609
-Node: Nondecimal Data846676
-Node: Array Sorting848267
-Node: Controlling Array Traversal848967
-Ref: Controlling Array Traversal-Footnote-1857335
-Node: Array Sorting Functions857453
-Ref: Array Sorting Functions-Footnote-1862544
-Node: Two-way I/O862740
-Ref: Two-way I/O-Footnote-1870461
-Ref: Two-way I/O-Footnote-2870648
-Node: TCP/IP Networking870730
-Node: Profiling873848
-Node: Extension Philosophy883157
-Node: Advanced Features Summary884608
-Node: Internationalization886607
-Node: I18N and L10N888087
-Node: Explaining gettext888774
-Ref: Explaining gettext-Footnote-1894666
-Ref: Explaining gettext-Footnote-2894851
-Node: Programmer i18n895016
-Ref: Programmer i18n-Footnote-1899965
-Node: Translator i18n900014
-Node: String Extraction900808
-Ref: String Extraction-Footnote-1901940
-Node: Printf Ordering902026
-Ref: Printf Ordering-Footnote-1904812
-Node: I18N Portability904876
-Ref: I18N Portability-Footnote-1907332
-Node: I18N Example907395
-Ref: I18N Example-Footnote-1910670
-Ref: I18N Example-Footnote-2910743
-Node: Gawk I18N910852
-Node: I18N Summary911501
-Node: Debugger912842
-Node: Debugging913842
-Node: Debugging Concepts914283
-Node: Debugging Terms916092
-Node: Awk Debugging918667
-Ref: Awk Debugging-Footnote-1919612
-Node: Sample Debugging Session919744
-Node: Debugger Invocation920278
-Node: Finding The Bug921664
-Node: List of Debugger Commands928138
-Node: Breakpoint Control929471
-Node: Debugger Execution Control933165
-Node: Viewing And Changing Data936527
-Node: Execution Stack940068
-Node: Debugger Info941705
-Node: Miscellaneous Debugger Commands945776
-Node: Readline Support950838
-Node: Limitations951734
-Node: Debugging Summary954288
-Node: Namespaces955567
-Node: Global Namespace956678
-Node: Qualified Names958076
-Node: Default Namespace959075
-Node: Changing The Namespace959816
-Node: Naming Rules961430
-Node: Internal Name Management963278
-Node: Namespace Example964320
-Node: Namespace And Features966882
-Node: Namespace Summary968317
-Node: Arbitrary Precision Arithmetic969794
-Node: Computer Arithmetic971281
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-Node: Math Definitions976255
-Ref: table-ieee-formats979571
-Ref: Math Definitions-Footnote-1980174
-Node: MPFR features980279
-Node: FP Math Caution981997
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-Node: Getting Accuracy988432
-Node: Try To Round991142
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-Node: Accessing Parameters1076412
-Node: Symbol Table Access1077649
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-Node: SVR41179486
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-Node: Extracting1221279
-Node: Distribution contents1222917
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-Node: Additional Configuration Options1233582
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-Node: PC Using1241116
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-Node: VMS GNV1256790
-Node: VMS Old Gawk1257525
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-Node: Notes1272127
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-Node: Accessing The Source1274628
-Node: Adding Code1276065
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-Node: Glossary1313545
-Node: Copying1345430
-Node: GNU Free Documentation License1382973
-Node: Index1408093
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+Node: Regexp Constants349449
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+Node: Conversion361835
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+Node: Locale influences conversions365531
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+Node: Patterns and Actions418407
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+Node: Assigning Elements508297
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+Node: Arrays of Arrays531639
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+Ref: Bitwise Functions-Footnote-2606651
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+Node: Return Statement630228
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+Ref: Library Names-Footnote-2655033
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+Node: Strtonum Function656222
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+Node: Cliff Random Function664110
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+Ref: Ordinal Functions-Footnote-2668441
+Node: Join Function668651
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+Node: Readfile Function674363
+Node: Shell Quoting676340
+Node: Data File Management677741
+Node: Filetrans Function678373
+Node: Rewind Function682469
+Node: File Checking684378
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+Node: Ignoring Assigns687892
+Node: Getopt Function689442
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+Node: Passwd Functions704853
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+Node: Library Functions Summary724893
+Node: Library Exercises726299
+Node: Sample Programs726764
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+Node: Clones728262
+Node: Cut Program729486
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+Node: Uniq Program771437
+Node: Wc Program779025
+Node: Bytes vs. Characters779422
+Node: Using extensions780970
+Node: wc program781724
+Node: Miscellaneous Programs786589
+Node: Dupword Program787802
+Node: Alarm Program789832
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+Node: Labels Program799522
+Ref: Labels Program-Footnote-1802873
+Node: Word Sorting802957
+Node: History Sorting807029
+Node: Extract Program809254
+Node: Simple Sed817308
+Node: Igawk Program820382
+Ref: Igawk Program-Footnote-1834713
+Ref: Igawk Program-Footnote-2834915
+Ref: Igawk Program-Footnote-3835037
+Node: Anagram Program835152
+Node: Signature Program838214
+Node: Programs Summary839461
+Node: Programs Exercises840675
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+Node: Advanced Features844891
+Node: Nondecimal Data846958
+Node: Array Sorting848549
+Node: Controlling Array Traversal849249
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+Node: Two-way I/O863022
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+Ref: Two-way I/O-Footnote-2870930
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+Node: I18N and L10N888369
+Node: Explaining gettext889056
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+Ref: Explaining gettext-Footnote-2895133
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+Node: I18N Example907677
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+Node: Debugging914124
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+Node: Debugger Info941987
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+Node: Internal Name Management963560
+Node: Namespace Example964602
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+Node: Computer Arithmetic971563
+Ref: table-numeric-ranges975329
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+Ref: table-ieee-formats979853
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+Node: MPFR features980561
+Node: FP Math Caution982279
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+Node: Inexactness of computations983720
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+Node: Comparing FP Values986040
+Node: Errors accumulate987281
+Node: Getting Accuracy988714
+Node: Try To Round991424
+Node: Setting precision992323
+Ref: table-predefined-precision-strings993020
+Node: Setting the rounding mode994850
+Ref: table-gawk-rounding-modes995224
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+Node: POSIX Floating Point Problems1004132
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+Node: Floating point summary1008455
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+Node: Extension Intro1012198
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+Ref: figure-call-new-function1017357
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+Node: Extension API Functions Introduction1021132
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+Ref: General Data Types-Footnote-11035847
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+Node: Requesting Values1075021
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+Node: Accessing Parameters1076694
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+Node: Extension Example1124162
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+Node: Extension Sample Rev2way1162077
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+Node: PC Binary Installation1239846
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+Node: PC Using1241398
+Node: Cygwin1244951
+Node: MSYS1246175
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+Node: VMS Installation Details1250540
+Node: VMS Running1252793
+Node: VMS GNV1257072
+Node: VMS Old Gawk1257807
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+Node: Bug address1258941
+Node: Usenet1261923
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+Node: Other Versions1264112
+Node: Installation summary1271200
+Node: Notes1272409
+Node: Compatibility Mode1273203
+Node: Additions1273985
+Node: Accessing The Source1274910
+Node: Adding Code1276347
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+Node: Derived Files1286941
+Ref: Derived Files-Footnote-11292601
+Ref: Derived Files-Footnote-21292636
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+Node: Future Extensions1293348
+Node: Implementation Limitations1294006
+Node: Extension Design1295216
+Node: Old Extension Problems1296360
+Ref: Old Extension Problems-Footnote-11297878
+Node: Extension New Mechanism Goals1297935
+Ref: Extension New Mechanism Goals-Footnote-11301299
+Node: Extension Other Design Decisions1301488
+Node: Extension Future Growth1303601
+Node: Notes summary1304207
+Node: Basic Concepts1305365
+Node: Basic High Level1306046
+Ref: figure-general-flow1306328
+Ref: figure-process-flow1307013
+Ref: Basic High Level-Footnote-11310314
+Node: Basic Data Typing1310499
+Node: Glossary1313827
+Node: Copying1345712
+Node: GNU Free Documentation License1383255
+Node: Index1408375
 End Tag Table
diff --git a/doc/gawk.texi b/doc/gawk.texi
index a6f49cb..e4d0205 100644
--- a/doc/gawk.texi
+++ b/doc/gawk.texi
@@ -8291,6 +8291,8 @@ words, @code{FS} defines what a field @emph{is not}, 
instead of what a field
 However, there are times when you really want to define the fields by
 what they are, and not by what they are not.
+@cindex CSV (comma separated values) data @subentry parsing with @code{FPAT}
+@cindex Comma separated values (CSV) data @subentry parsing with @code{FPAT}
 The most notorious such case
 is so-called @dfn{comma-separated values} (CSV) data. Many spreadsheet 
 for example, can export their data into text files, where each record is
@@ -8474,6 +8476,15 @@ $ @kbd{gawk -v fpat=2 -f test-csv.awk sample.csv}
 @print{} NF = 3 <p><><s>
 @end example
+@cindex Collado, Manuel
+@cindex @code{CSVMODE} library for @command{gawk}
+@cindex CSV (comma separated values) data @subentry parsing with 
@code{CSVMODE} library
+@cindex Comma separated values (CSV) data @subentry parsing with @code{FPAT} 
+In general, using @code{FPAT} to do your own CSV parsing is like having
+a bed with a blanket that's not quite big enough. There's always a corner
+that isn't covered. We recommend, instead, that you use Manuel Collado's
+@uref{, @code{CSVMODE} library for 
 @node Testing field creation
 @section Checking How @command{gawk} Is Splitting Records
diff --git a/doc/ b/doc/
index 78a28be..d784d38 100644
--- a/doc/
+++ b/doc/
@@ -7844,6 +7844,8 @@ words, @code{FS} defines what a field @emph{is not}, 
instead of what a field
 However, there are times when you really want to define the fields by
 what they are, and not by what they are not.
+@cindex CSV (comma separated values) data @subentry parsing with @code{FPAT}
+@cindex Comma separated values (CSV) data @subentry parsing with @code{FPAT}
 The most notorious such case
 is so-called @dfn{comma-separated values} (CSV) data. Many spreadsheet 
 for example, can export their data into text files, where each record is
@@ -8027,6 +8029,15 @@ $ @kbd{gawk -v fpat=2 -f test-csv.awk sample.csv}
 @print{} NF = 3 <p><><s>
 @end example
+@cindex Collado, Manuel
+@cindex @code{CSVMODE} library for @command{gawk}
+@cindex CSV (comma separated values) data @subentry parsing with 
@code{CSVMODE} library
+@cindex Comma separated values (CSV) data @subentry parsing with @code{FPAT} 
+In general, using @code{FPAT} to do your own CSV parsing is like having
+a bed with a blanket that's not quite big enough. There's always a corner
+that isn't covered. We recommend, instead, that you use Manuel Collado's
+@uref{, @code{CSVMODE} library for 
 @node Testing field creation
 @section Checking How @command{gawk} Is Splitting Records

commit daaaab1ae680cbaf6575741c314a19ae9d57ef8f
Author: Arnold D. Robbins <>
Date:   Sat Dec 26 20:47:13 2020 +0200

    Updates to NEWS.

diff --git a/ChangeLog b/ChangeLog
index 87805af..21b60bb 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2020-12-26         Arnold D. Robbins     <>
+       * NEWS: Updated.
 2020-12-20         Arnold D. Robbins     <>
        Second steps fixing +inform, +nancy, for MPFR.
diff --git a/NEWS b/NEWS
index b96cea7..9eae648 100644
--- a/NEWS
+++ b/NEWS
@@ -40,6 +40,8 @@ Changes from 5.1.0 to 5.1.1
 9. Several example programs in the manual have been updated to their
    modern POSIX equivalents.
+10. Handling of Infinity and NaN values has been improved.
 xx. There have been numerous minor code cleanups and bug fixes. See the
     ChangeLog for details.


Summary of changes:
 ChangeLog        |    4 +
 NEWS             |    2 +
 doc/ChangeLog    |    5 +
 doc/    | 1009 +++++++++++++++++++++++++++---------------------------
 doc/gawk.texi    |   11 +
 doc/  |   11 +
 pc/ChangeLog     |    4 +
 pc/Makefile.tst  |    7 +-
 test/ |    5 +-
 test/ |   10 +-
 test/Maketests   |    5 +
 test/fpat9.awk   |   22 ++
 test/    |    7 +
 test/fpat9.ok    |   64 ++++
 14 files changed, 666 insertions(+), 500 deletions(-)
 create mode 100644 test/fpat9.awk
 create mode 100644 test/
 create mode 100644 test/fpat9.ok


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