Document IGNORECASE uses locale for single byte locales too.

4 files changed, 549 insertions, 549 deletions

diff --git a/doc/ChangeLog b/doc/ChangeLog
index 862c2b87..6f4467d9 100644
--- a/doc/ChangeLog
+++ b/doc/ChangeLog
@@ -1,3 +1,9 @@
+2019-04-14         Arnold D. Robbins     <arnold@skeeve.com>
+
+	* gawktexi.in (Case-sensitivity): Document that single-byte
+	locales ignore case based on the current locale and not
+	always Latin-1.
+
 2019-04-12         Arnold D. Robbins     <arnold@skeeve.com>
 
 	* ChangeLog.1: Rotated ChangeLog into this file.
diff --git a/doc/gawk.info b/doc/gawk.info
index bca05d11..f7b93f6a 100644
--- a/doc/gawk.info
+++ b/doc/gawk.info
@@ -4222,10 +4222,10 @@ insensitive without having to edit it.
 
    In multibyte locales, the equivalences between upper- and lowercase
 characters are tested based on the wide-character values of the locale's
-character set.  Otherwise, the characters are tested based on the
-ISO-8859-1 (ISO Latin-1) character set.  This character set is a
-superset of the traditional 128 ASCII characters, which also provides a
-number of characters suitable for use with European languages.(2)
+character set.  Prior to version 5.0, single-byte characters were tested
+based on the ISO-8859-1 (ISO Latin-1) character set.  However, as of
+version 5.0, single-byte characters are also tested based on the values
+of the locale's character set.(2)
 
    The value of 'IGNORECASE' has no effect if 'gawk' is in compatibility
 mode (*note Options::).  Case is always significant in compatibility
@@ -36941,528 +36941,528 @@ Node: Leftmost Longest182980
 Node: Computed Regexps184283
 Node: GNU Regexp Operators187710
 Node: Case-sensitivity191389
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-Ref: Full Line Fields-Footnote-2233554
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-Node: Getline/Coprocess267966
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+Node: Expression Patterns415490
+Node: Ranges419271
+Node: BEGIN/END422379
+Node: Using BEGIN/END423140
+Ref: Using BEGIN/END-Footnote-1425876
+Node: I/O And BEGIN/END425982
+Node: BEGINFILE/ENDFILE428296
+Node: Empty431209
+Node: Using Shell Variables431526
+Node: Action Overview433800
+Node: Statements436125
+Node: If Statement437973
+Node: While Statement439468
+Node: Do Statement441496
+Node: For Statement442644
+Node: Switch Statement445815
+Node: Break Statement448201
+Node: Continue Statement450293
+Node: Next Statement452120
+Node: Nextfile Statement454503
+Node: Exit Statement457155
+Node: Built-in Variables459558
+Node: User-modified460691
+Node: Auto-set468458
+Ref: Auto-set-Footnote-1485265
+Ref: Auto-set-Footnote-2485471
+Node: ARGC and ARGV485527
+Node: Pattern Action Summary489740
+Node: Arrays492170
+Node: Array Basics493499
+Node: Array Intro494343
+Ref: figure-array-elements496318
+Ref: Array Intro-Footnote-1499022
+Node: Reference to Elements499150
+Node: Assigning Elements501614
+Node: Array Example502105
+Node: Scanning an Array503864
+Node: Controlling Scanning506886
+Ref: Controlling Scanning-Footnote-1512285
+Node: Numeric Array Subscripts512601
+Node: Uninitialized Subscripts514785
+Node: Delete516404
+Ref: Delete-Footnote-1519156
+Node: Multidimensional519213
+Node: Multiscanning522308
+Node: Arrays of Arrays523899
+Node: Arrays Summary528667
+Node: Functions530760
+Node: Built-in531798
+Node: Calling Built-in532879
+Node: Numeric Functions534875
+Ref: Numeric Functions-Footnote-1538903
+Ref: Numeric Functions-Footnote-2539548
+Ref: Numeric Functions-Footnote-3539596
+Node: String Functions539868
+Ref: String Functions-Footnote-1563726
+Ref: String Functions-Footnote-2563854
+Ref: String Functions-Footnote-3564102
+Node: Gory Details564189
+Ref: table-sub-escapes565980
+Ref: table-sub-proposed567499
+Ref: table-posix-sub568862
+Ref: table-gensub-escapes570403
+Ref: Gory Details-Footnote-1571226
+Node: I/O Functions571380
+Ref: table-system-return-values577848
+Ref: I/O Functions-Footnote-1579928
+Ref: I/O Functions-Footnote-2580076
+Node: Time Functions580196
+Ref: Time Functions-Footnote-1590867
+Ref: Time Functions-Footnote-2590935
+Ref: Time Functions-Footnote-3591093
+Ref: Time Functions-Footnote-4591204
+Ref: Time Functions-Footnote-5591316
+Ref: Time Functions-Footnote-6591543
+Node: Bitwise Functions591809
+Ref: table-bitwise-ops592403
+Ref: Bitwise Functions-Footnote-1598466
+Ref: Bitwise Functions-Footnote-2598639
+Node: Type Functions598830
+Node: I18N Functions601581
+Node: User-defined603232
+Node: Definition Syntax604044
+Ref: Definition Syntax-Footnote-1609731
+Node: Function Example609802
+Ref: Function Example-Footnote-1612724
+Node: Function Calling612746
+Node: Calling A Function613334
+Node: Variable Scope614292
+Node: Pass By Value/Reference617286
+Node: Function Caveats619930
+Ref: Function Caveats-Footnote-1621977
+Node: Return Statement622097
+Node: Dynamic Typing625076
+Node: Indirect Calls626006
+Ref: Indirect Calls-Footnote-1636258
+Node: Functions Summary636386
+Node: Library Functions639091
+Ref: Library Functions-Footnote-1642698
+Ref: Library Functions-Footnote-2642841
+Node: Library Names643012
+Ref: Library Names-Footnote-1646679
+Ref: Library Names-Footnote-2646902
+Node: General Functions646988
+Node: Strtonum Function648091
+Node: Assert Function651113
+Node: Round Function654439
+Node: Cliff Random Function655979
+Node: Ordinal Functions656995
+Ref: Ordinal Functions-Footnote-1660058
+Ref: Ordinal Functions-Footnote-2660310
+Node: Join Function660520
+Ref: Join Function-Footnote-1662290
+Node: Getlocaltime Function662490
+Node: Readfile Function666232
+Node: Shell Quoting668209
+Node: Data File Management669610
+Node: Filetrans Function670242
+Node: Rewind Function674338
+Node: File Checking676247
+Ref: File Checking-Footnote-1677581
+Node: Empty Files677782
+Node: Ignoring Assigns679761
+Node: Getopt Function681311
+Ref: Getopt Function-Footnote-1692780
+Node: Passwd Functions692980
+Ref: Passwd Functions-Footnote-1701819
+Node: Group Functions701907
+Ref: Group Functions-Footnote-1709805
+Node: Walking Arrays710012
+Node: Library Functions Summary713020
+Node: Library Exercises714426
+Node: Sample Programs714891
+Node: Running Examples715661
+Node: Clones716389
+Node: Cut Program717613
+Node: Egrep Program727542
+Ref: Egrep Program-Footnote-1735054
+Node: Id Program735164
+Node: Split Program738844
+Ref: Split Program-Footnote-1742302
+Node: Tee Program742431
+Node: Uniq Program745221
+Node: Wc Program752842
+Ref: Wc Program-Footnote-1757097
+Node: Miscellaneous Programs757191
+Node: Dupword Program758404
+Node: Alarm Program760434
+Node: Translate Program765289
+Ref: Translate Program-Footnote-1769854
+Node: Labels Program770124
+Ref: Labels Program-Footnote-1773475
+Node: Word Sorting773559
+Node: History Sorting777631
+Node: Extract Program779466
+Node: Simple Sed787520
+Node: Igawk Program790594
+Ref: Igawk Program-Footnote-1804925
+Ref: Igawk Program-Footnote-2805127
+Ref: Igawk Program-Footnote-3805249
+Node: Anagram Program805364
+Node: Signature Program808426
+Node: Programs Summary809673
+Node: Programs Exercises810887
+Ref: Programs Exercises-Footnote-1815016
+Node: Advanced Features815107
+Node: Nondecimal Data817097
+Node: Array Sorting818688
+Node: Controlling Array Traversal819388
+Ref: Controlling Array Traversal-Footnote-1827756
+Node: Array Sorting Functions827874
+Ref: Array Sorting Functions-Footnote-1832965
+Node: Two-way I/O833161
+Ref: Two-way I/O-Footnote-1840882
+Ref: Two-way I/O-Footnote-2841069
+Node: TCP/IP Networking841151
+Node: Profiling844269
+Node: Advanced Features Summary853287
+Node: Internationalization855131
+Node: I18N and L10N856611
+Node: Explaining gettext857298
+Ref: Explaining gettext-Footnote-1863190
+Ref: Explaining gettext-Footnote-2863375
+Node: Programmer i18n863540
+Ref: Programmer i18n-Footnote-1868489
+Node: Translator i18n868538
+Node: String Extraction869332
+Ref: String Extraction-Footnote-1870464
+Node: Printf Ordering870550
+Ref: Printf Ordering-Footnote-1873336
+Node: I18N Portability873400
+Ref: I18N Portability-Footnote-1875856
+Node: I18N Example875919
+Ref: I18N Example-Footnote-1879194
+Ref: I18N Example-Footnote-2879267
+Node: Gawk I18N879376
+Node: I18N Summary880025
+Node: Debugger881366
+Node: Debugging882366
+Node: Debugging Concepts882807
+Node: Debugging Terms884616
+Node: Awk Debugging887191
+Ref: Awk Debugging-Footnote-1888136
+Node: Sample Debugging Session888268
+Node: Debugger Invocation888802
+Node: Finding The Bug890188
+Node: List of Debugger Commands896662
+Node: Breakpoint Control897995
+Node: Debugger Execution Control901689
+Node: Viewing And Changing Data905051
+Node: Execution Stack908592
+Node: Debugger Info910229
+Node: Miscellaneous Debugger Commands914300
+Node: Readline Support919362
+Node: Limitations920258
+Node: Debugging Summary922367
+Node: Namespaces923646
+Node: Global Namespace924725
+Node: Qualified Names926123
+Node: Default Namespace927122
+Node: Changing The Namespace927863
+Node: Naming Rules929477
+Node: Internal Name Management931325
+Node: Namespace Example932367
+Node: Namespace And Features934929
+Node: Namespace Summary936364
+Node: Arbitrary Precision Arithmetic937841
+Node: Computer Arithmetic939328
+Ref: table-numeric-ranges943094
+Ref: table-floating-point-ranges943587
+Ref: Computer Arithmetic-Footnote-1944245
+Node: Math Definitions944302
+Ref: table-ieee-formats947618
+Ref: Math Definitions-Footnote-1948221
+Node: MPFR features948326
+Node: FP Math Caution950044
+Ref: FP Math Caution-Footnote-1951116
+Node: Inexactness of computations951485
+Node: Inexact representation952445
+Node: Comparing FP Values953805
+Node: Errors accumulate955046
+Node: Getting Accuracy956479
+Node: Try To Round959189
+Node: Setting precision960088
+Ref: table-predefined-precision-strings960785
+Node: Setting the rounding mode962615
+Ref: table-gawk-rounding-modes962989
+Ref: Setting the rounding mode-Footnote-1966920
+Node: Arbitrary Precision Integers967099
+Ref: Arbitrary Precision Integers-Footnote-1970274
+Node: Checking for MPFR970423
+Node: POSIX Floating Point Problems971897
+Ref: POSIX Floating Point Problems-Footnote-1976182
+Node: Floating point summary976220
+Node: Dynamic Extensions978410
+Node: Extension Intro979963
+Node: Plugin License981229
+Node: Extension Mechanism Outline982026
+Ref: figure-load-extension982465
+Ref: figure-register-new-function984030
+Ref: figure-call-new-function985122
+Node: Extension API Description987184
+Node: Extension API Functions Introduction988826
+Ref: table-api-std-headers990662
+Node: General Data Types994527
+Ref: General Data Types-Footnote-11002888
+Node: Memory Allocation Functions1003187
+Ref: Memory Allocation Functions-Footnote-11007397
+Node: Constructor Functions1007496
+Node: Registration Functions1011082
+Node: Extension Functions1011767
+Node: Exit Callback Functions1017089
+Node: Extension Version String1018339
+Node: Input Parsers1019002
+Node: Output Wrappers1031723
+Node: Two-way processors1036235
+Node: Printing Messages1038500
+Ref: Printing Messages-Footnote-11039671
+Node: Updating ERRNO1039824
+Node: Requesting Values1040563
+Ref: table-value-types-returned1041300
+Node: Accessing Parameters1042236
+Node: Symbol Table Access1043471
+Node: Symbol table by name1043983
+Ref: Symbol table by name-Footnote-11047007
+Node: Symbol table by cookie1047135
+Ref: Symbol table by cookie-Footnote-11051320
+Node: Cached values1051384
+Ref: Cached values-Footnote-11054920
+Node: Array Manipulation1055073
+Ref: Array Manipulation-Footnote-11056164
+Node: Array Data Types1056201
+Ref: Array Data Types-Footnote-11058859
+Node: Array Functions1058951
+Node: Flattening Arrays1063449
+Node: Creating Arrays1070425
+Node: Redirection API1075192
+Node: Extension API Variables1078025
+Node: Extension Versioning1078736
+Ref: gawk-api-version1079165
+Node: Extension GMP/MPFR Versioning1080896
+Node: Extension API Informational Variables1082524
+Node: Extension API Boilerplate1083597
+Node: Changes from API V11087571
+Node: Finding Extensions1089143
+Node: Extension Example1089702
+Node: Internal File Description1090500
+Node: Internal File Ops1094580
+Ref: Internal File Ops-Footnote-11105930
+Node: Using Internal File Ops1106070
+Ref: Using Internal File Ops-Footnote-11108453
+Node: Extension Samples1108727
+Node: Extension Sample File Functions1110256
+Node: Extension Sample Fnmatch1117905
+Node: Extension Sample Fork1119392
+Node: Extension Sample Inplace1120610
+Node: Extension Sample Ord1123914
+Node: Extension Sample Readdir1124750
+Ref: table-readdir-file-types1125639
+Node: Extension Sample Revout1126444
+Node: Extension Sample Rev2way1127033
+Node: Extension Sample Read write array1127773
+Node: Extension Sample Readfile1129715
+Node: Extension Sample Time1130810
+Node: Extension Sample API Tests1132158
+Node: gawkextlib1132650
+Node: Extension summary1135568
+Node: Extension Exercises1139270
+Node: Language History1140512
+Node: V7/SVR3.11142168
+Node: SVR41144320
+Node: POSIX1145754
+Node: BTL1147134
+Node: POSIX/GNU1147863
+Node: Feature History1153641
+Node: Common Extensions1169687
+Node: Ranges and Locales1170970
+Ref: Ranges and Locales-Footnote-11175586
+Ref: Ranges and Locales-Footnote-21175613
+Ref: Ranges and Locales-Footnote-31175848
+Node: Contributors1176069
+Node: History summary1182014
+Node: Installation1183394
+Node: Gawk Distribution1184338
+Node: Getting1184822
+Node: Extracting1185785
+Node: Distribution contents1187423
+Node: Unix Installation1193903
+Node: Quick Installation1194585
+Node: Shell Startup Files1196999
+Node: Additional Configuration Options1198088
+Node: Configuration Philosophy1200253
+Node: Non-Unix Installation1202622
+Node: PC Installation1203082
+Node: PC Binary Installation1203920
+Node: PC Compiling1204355
+Node: PC Using1205472
+Node: Cygwin1209025
+Node: MSYS1210124
+Node: VMS Installation1210625
+Node: VMS Compilation1211416
+Ref: VMS Compilation-Footnote-11212645
+Node: VMS Dynamic Extensions1212703
+Node: VMS Installation Details1214388
+Node: VMS Running1216641
+Node: VMS GNV1220920
+Node: VMS Old Gawk1221655
+Node: Bugs1222126
+Node: Bug address1222789
+Node: Usenet1225771
+Node: Maintainers1226775
+Node: Other Versions1228036
+Node: Installation summary1234950
+Node: Notes1236152
+Node: Compatibility Mode1236946
+Node: Additions1237728
+Node: Accessing The Source1238653
+Node: Adding Code1240090
+Node: New Ports1246309
+Node: Derived Files1250684
+Ref: Derived Files-Footnote-11256344
+Ref: Derived Files-Footnote-21256379
+Ref: Derived Files-Footnote-31256977
+Node: Future Extensions1257091
+Node: Implementation Limitations1257749
+Node: Extension Design1258932
+Node: Old Extension Problems1260076
+Ref: Old Extension Problems-Footnote-11261594
+Node: Extension New Mechanism Goals1261651
+Ref: Extension New Mechanism Goals-Footnote-11265015
+Node: Extension Other Design Decisions1265204
+Node: Extension Future Growth1267317
+Node: Notes summary1268153
+Node: Basic Concepts1269311
+Node: Basic High Level1269992
+Ref: figure-general-flow1270274
+Ref: figure-process-flow1270959
+Ref: Basic High Level-Footnote-11274260
+Node: Basic Data Typing1274445
+Node: Glossary1277773
+Node: Copying1309611
+Node: GNU Free Documentation License1347154
+Node: Index1372274
 
 End Tag Table
diff --git a/doc/gawk.texi b/doc/gawk.texi
index c3d01a65..e5371c61 100644
--- a/doc/gawk.texi
+++ b/doc/gawk.texi
@@ -6416,17 +6416,14 @@ a program case insensitive without having to edit it.
 
 @c @cindex ISO 8859-1
 @c @cindex ISO Latin-1
-In multibyte locales,
-the equivalences between upper-
-and lowercase characters are tested based on the wide-character values of
-the locale's character set.
-Otherwise, the characters are tested based
-on the ISO-8859-1 (ISO Latin-1)
-character set. This character set is a superset of the traditional 128
-ASCII characters, which also provides a number of characters suitable
-for use with European languages.@footnote{If you don't understand this,
-don't worry about it; it just means that @command{gawk} does
-the right thing.}
+In multibyte locales, the equivalences between upper- and lowercase
+characters are tested based on the wide-character values of the locale's
+character set.  Prior to @value{PVERSION} 5.0, single-byte characters were
+tested based on the ISO-8859-1 (ISO Latin-1) character set.  However, as
+of @value{PVERSION} 5.0, single-byte characters are also tested based on
+the values of the locale's character set.@footnote{If you don't understand
+this, don't worry about it; it just means that @command{gawk} does the
+right thing.}
 
 The value of @code{IGNORECASE} has no effect if @command{gawk} is in
 compatibility mode (@pxref{Options}).
diff --git a/doc/gawktexi.in b/doc/gawktexi.in
index 202f47f6..14e20b7a 100644
--- a/doc/gawktexi.in
+++ b/doc/gawktexi.in
@@ -6199,17 +6199,14 @@ a program case insensitive without having to edit it.
 
 @c @cindex ISO 8859-1
 @c @cindex ISO Latin-1
-In multibyte locales,
-the equivalences between upper-
-and lowercase characters are tested based on the wide-character values of
-the locale's character set.
-Otherwise, the characters are tested based
-on the ISO-8859-1 (ISO Latin-1)
-character set. This character set is a superset of the traditional 128
-ASCII characters, which also provides a number of characters suitable
-for use with European languages.@footnote{If you don't understand this,
-don't worry about it; it just means that @command{gawk} does
-the right thing.}
+In multibyte locales, the equivalences between upper- and lowercase
+characters are tested based on the wide-character values of the locale's
+character set.  Prior to @value{PVERSION} 5.0, single-byte characters were
+tested based on the ISO-8859-1 (ISO Latin-1) character set.  However, as
+of @value{PVERSION} 5.0, single-byte characters are also tested based on
+the values of the locale's character set.@footnote{If you don't understand
+this, don't worry about it; it just means that @command{gawk} does the
+right thing.}
 
 The value of @code{IGNORECASE} has no effect if @command{gawk} is in
 compatibility mode (@pxref{Options}).