Merge branch 'gawk-5.1-stable'

4 files changed, 397 insertions, 394 deletions

diff --git a/doc/ChangeLog b/doc/ChangeLog
index 8d00228d..af355722 100644
--- a/doc/ChangeLog
+++ b/doc/ChangeLog
@@ -2,6 +2,7 @@
 
 	* gawktexi.in (Nextfile Statement): Clarify what happens in
 	a BEGINFILE rule.
+	* gawktexi.in: Additional small fixes.
 
 2020-11-15         Arnold D. Robbins     <arnold@skeeve.com>
 
diff --git a/doc/gawk.info b/doc/gawk.info
index 5b0e5dfc..bf4400fa 100644
--- a/doc/gawk.info
+++ b/doc/gawk.info
@@ -10803,10 +10803,10 @@ an 'END' rule, 'ARGIND' is incremented, and any 'BEGINFILE' rules are
 executed.  ('ARGIND' hasn't been introduced yet.  *Note Built-in
 Variables::.)
 
-   With 'gawk', 'nextfile' is useful inside a 'BEGINFILE' rule to skip
-over a file that would otherwise cause 'gawk' to exit with a fatal
-error.  In this case, 'ENDFILE' rules are not executed.  *Note
-BEGINFILE/ENDFILE::.
+   There is an additional, special, use case with 'gawk'.  'nextfile' is
+useful inside a 'BEGINFILE' rule to skip over a file that would
+otherwise cause 'gawk' to exit with a fatal error.  In this special
+case, 'ENDFILE' rules are not executed.  *Note BEGINFILE/ENDFILE::.
 
    Although it might seem that 'close(FILENAME)' would accomplish the
 same as 'nextfile', this isn't true.  'close()' is reserved for closing
@@ -38192,392 +38192,392 @@ Node: Break Statement455132
 Node: Continue Statement457224
 Node: Next Statement459051
 Node: Nextfile Statement461434
-Node: Exit Statement464072
-Node: Built-in Variables466475
-Node: User-modified467608
-Node: Auto-set475375
-Ref: Auto-set-Footnote-1492182
-Ref: Auto-set-Footnote-2492388
-Node: ARGC and ARGV492444
-Node: Pattern Action Summary496657
-Node: Arrays499087
-Node: Array Basics500416
-Node: Array Intro501260
-Ref: figure-array-elements503235
-Ref: Array Intro-Footnote-1505939
-Node: Reference to Elements506067
-Node: Assigning Elements508531
-Node: Array Example509022
-Node: Scanning an Array510781
-Node: Controlling Scanning513803
-Ref: Controlling Scanning-Footnote-1520259
-Node: Numeric Array Subscripts520575
-Node: Uninitialized Subscripts522759
-Node: Delete524378
-Ref: Delete-Footnote-1527130
-Node: Multidimensional527187
-Node: Multiscanning530282
-Node: Arrays of Arrays531873
-Node: Arrays Summary536641
-Node: Functions538734
-Node: Built-in539772
-Node: Calling Built-in540853
-Node: Numeric Functions542849
-Ref: Numeric Functions-Footnote-1546875
-Ref: Numeric Functions-Footnote-2547523
-Ref: Numeric Functions-Footnote-3547571
-Node: String Functions547843
-Ref: String Functions-Footnote-1571984
-Ref: String Functions-Footnote-2572112
-Ref: String Functions-Footnote-3572360
-Node: Gory Details572447
-Ref: table-sub-escapes574238
-Ref: table-sub-proposed575757
-Ref: table-posix-sub577120
-Ref: table-gensub-escapes578661
-Ref: Gory Details-Footnote-1579484
-Node: I/O Functions579638
-Ref: table-system-return-values586092
-Ref: I/O Functions-Footnote-1588172
-Ref: I/O Functions-Footnote-2588320
-Node: Time Functions588440
-Ref: Time Functions-Footnote-1599111
-Ref: Time Functions-Footnote-2599179
-Ref: Time Functions-Footnote-3599337
-Ref: Time Functions-Footnote-4599448
-Ref: Time Functions-Footnote-5599560
-Ref: Time Functions-Footnote-6599787
-Node: Bitwise Functions600053
-Ref: table-bitwise-ops600647
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-Node: Assert Function659476
-Node: Round Function662802
-Node: Cliff Random Function664342
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-Node: Readfile Function674595
-Node: Shell Quoting676572
-Node: Data File Management677973
-Node: Filetrans Function678605
-Node: Rewind Function682701
-Node: File Checking684610
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-Node: Empty Files686145
-Node: Ignoring Assigns688124
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-Node: Sample Programs726996
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-Node: Id Program748658
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-Node: Uniq Program771342
-Node: Wc Program778906
-Node: Bytes vs. Characters779303
-Node: Using extensions780851
-Node: wc program781609
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-Node: Alarm Program789717
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-Node: History Sorting806914
-Node: Extract Program809139
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-Node: History summary1218278
-Node: Installation1219658
-Node: Gawk Distribution1220602
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-Node: Extracting1222049
-Node: Distribution contents1223687
-Node: Unix Installation1230167
-Node: Quick Installation1230849
-Node: Shell Startup Files1233263
-Node: Additional Configuration Options1234352
-Node: Configuration Philosophy1236667
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-Node: PC Installation1239496
-Node: PC Binary Installation1240334
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-Node: PC Using1241886
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-Node: Usenet1262411
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-Node: Installation summary1271688
-Node: Notes1272897
-Node: Compatibility Mode1273691
-Node: Additions1274473
-Node: Accessing The Source1275398
-Node: Adding Code1276835
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-Node: Basic Data Typing1310987
-Node: Glossary1314315
-Node: Copying1346200
-Node: GNU Free Documentation License1383743
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+Node: Constructor Functions1041285
+Node: API Ownership of MPFR and GMP Values1044751
+Node: Registration Functions1046064
+Node: Extension Functions1046764
+Node: Exit Callback Functions1052086
+Node: Extension Version String1053336
+Node: Input Parsers1053999
+Node: Output Wrappers1066720
+Node: Two-way processors1071232
+Node: Printing Messages1073497
+Ref: Printing Messages-Footnote-11074668
+Node: Updating ERRNO1074821
+Node: Requesting Values1075560
+Ref: table-value-types-returned1076297
+Node: Accessing Parameters1077233
+Node: Symbol Table Access1078470
+Node: Symbol table by name1078982
+Ref: Symbol table by name-Footnote-11082006
+Node: Symbol table by cookie1082134
+Ref: Symbol table by cookie-Footnote-11086319
+Node: Cached values1086383
+Ref: Cached values-Footnote-11089919
+Node: Array Manipulation1090072
+Ref: Array Manipulation-Footnote-11091163
+Node: Array Data Types1091200
+Ref: Array Data Types-Footnote-11093858
+Node: Array Functions1093950
+Node: Flattening Arrays1098448
+Node: Creating Arrays1105424
+Node: Redirection API1110191
+Node: Extension API Variables1113024
+Node: Extension Versioning1113735
+Ref: gawk-api-version1114164
+Node: Extension GMP/MPFR Versioning1115895
+Node: Extension API Informational Variables1117523
+Node: Extension API Boilerplate1118596
+Node: Changes from API V11122570
+Node: Finding Extensions1124142
+Node: Extension Example1124701
+Node: Internal File Description1125499
+Node: Internal File Ops1129579
+Ref: Internal File Ops-Footnote-11140929
+Node: Using Internal File Ops1141069
+Ref: Using Internal File Ops-Footnote-11143452
+Node: Extension Samples1143726
+Node: Extension Sample File Functions1145255
+Node: Extension Sample Fnmatch1152904
+Node: Extension Sample Fork1154391
+Node: Extension Sample Inplace1155609
+Node: Extension Sample Ord1159235
+Node: Extension Sample Readdir1160071
+Ref: table-readdir-file-types1160960
+Node: Extension Sample Revout1162027
+Node: Extension Sample Rev2way1162616
+Node: Extension Sample Read write array1163356
+Node: Extension Sample Readfile1165298
+Node: Extension Sample Time1166393
+Node: Extension Sample API Tests1168145
+Node: gawkextlib1168637
+Node: Extension summary1171555
+Node: Extension Exercises1175257
+Node: Language History1176499
+Node: V7/SVR3.11178155
+Node: SVR41180307
+Node: POSIX1181741
+Node: BTL1183122
+Node: POSIX/GNU1183851
+Node: Feature History1189629
+Node: Common Extensions1205948
+Node: Ranges and Locales1207231
+Ref: Ranges and Locales-Footnote-11211847
+Ref: Ranges and Locales-Footnote-21211874
+Ref: Ranges and Locales-Footnote-31212109
+Node: Contributors1212332
+Node: History summary1218329
+Node: Installation1219709
+Node: Gawk Distribution1220653
+Node: Getting1221137
+Node: Extracting1222100
+Node: Distribution contents1223738
+Node: Unix Installation1230218
+Node: Quick Installation1230900
+Node: Shell Startup Files1233314
+Node: Additional Configuration Options1234403
+Node: Configuration Philosophy1236718
+Node: Non-Unix Installation1239087
+Node: PC Installation1239547
+Node: PC Binary Installation1240385
+Node: PC Compiling1240820
+Node: PC Using1241937
+Node: Cygwin1245490
+Node: MSYS1246714
+Node: VMS Installation1247316
+Node: VMS Compilation1248107
+Ref: VMS Compilation-Footnote-11249336
+Node: VMS Dynamic Extensions1249394
+Node: VMS Installation Details1251079
+Node: VMS Running1253332
+Node: VMS GNV1257611
+Node: VMS Old Gawk1258346
+Node: Bugs1258817
+Node: Bug address1259480
+Node: Usenet1262462
+Node: Maintainers1263466
+Node: Other Versions1264651
+Node: Installation summary1271739
+Node: Notes1272948
+Node: Compatibility Mode1273742
+Node: Additions1274524
+Node: Accessing The Source1275449
+Node: Adding Code1276886
+Node: New Ports1283105
+Node: Derived Files1287480
+Ref: Derived Files-Footnote-11293140
+Ref: Derived Files-Footnote-21293175
+Ref: Derived Files-Footnote-31293773
+Node: Future Extensions1293887
+Node: Implementation Limitations1294545
+Node: Extension Design1295755
+Node: Old Extension Problems1296899
+Ref: Old Extension Problems-Footnote-11298417
+Node: Extension New Mechanism Goals1298474
+Ref: Extension New Mechanism Goals-Footnote-11301838
+Node: Extension Other Design Decisions1302027
+Node: Extension Future Growth1304140
+Node: Notes summary1304746
+Node: Basic Concepts1305904
+Node: Basic High Level1306585
+Ref: figure-general-flow1306867
+Ref: figure-process-flow1307552
+Ref: Basic High Level-Footnote-11310853
+Node: Basic Data Typing1311038
+Node: Glossary1314366
+Node: Copying1346251
+Node: GNU Free Documentation License1383794
+Node: Index1408914
 
 End Tag Table
 
diff --git a/doc/gawk.texi b/doc/gawk.texi
index 5d593fde..7943365f 100644
--- a/doc/gawk.texi
+++ b/doc/gawk.texi
@@ -15513,9 +15513,10 @@ not currently in an @code{END} rule, @code{ARGIND} is
 incremented, and any @code{BEGINFILE} rules are executed.  (@code{ARGIND}
 hasn't been introduced yet. @xref{Built-in Variables}.)
 
-With @command{gawk}, @code{nextfile} is useful inside a @code{BEGINFILE}
+There is an additional, special, use case
+with @command{gawk}. @code{nextfile} is useful inside a @code{BEGINFILE}
 rule to skip over a file that would otherwise cause @command{gawk}
-to exit with a fatal error. In this case, @code{ENDFILE} rules are not
+to exit with a fatal error. In this special case, @code{ENDFILE} rules are not
 executed. @xref{BEGINFILE/ENDFILE}.
 
 Although it might seem that @samp{close(FILENAME)} would accomplish
diff --git a/doc/gawktexi.in b/doc/gawktexi.in
index 2c2b12ec..04e16468 100644
--- a/doc/gawktexi.in
+++ b/doc/gawktexi.in
@@ -14784,9 +14784,10 @@ not currently in an @code{END} rule, @code{ARGIND} is
 incremented, and any @code{BEGINFILE} rules are executed.  (@code{ARGIND}
 hasn't been introduced yet. @xref{Built-in Variables}.)
 
-With @command{gawk}, @code{nextfile} is useful inside a @code{BEGINFILE}
+There is an additional, special, use case
+with @command{gawk}. @code{nextfile} is useful inside a @code{BEGINFILE}
 rule to skip over a file that would otherwise cause @command{gawk}
-to exit with a fatal error. In this case, @code{ENDFILE} rules are not
+to exit with a fatal error. In this special case, @code{ENDFILE} rules are not
 executed. @xref{BEGINFILE/ENDFILE}.
 
 Although it might seem that @samp{close(FILENAME)} would accomplish