Expand tab characters in the doc.

5 files changed, 279 insertions, 275 deletions

diff --git a/awklib/eg/lib/inplace.awk b/awklib/eg/lib/inplace.awk
index 15a83f58..505be76d 100644
--- a/awklib/eg/lib/inplace.awk
+++ b/awklib/eg/lib/inplace.awk
@@ -15,7 +15,7 @@
 # actions in an ENDFILE rule will be redirected as expected.
 
 BEGIN {
-    inplace = 1		# enabled by default
+    inplace = 1         # enabled by default
 }
 
 BEGINFILE {
diff --git a/doc/ChangeLog b/doc/ChangeLog
index fbcd9367..bf996749 100644
--- a/doc/ChangeLog
+++ b/doc/ChangeLog
@@ -1,3 +1,7 @@
+2017-06-15         Arnold D. Robbins     <arnold@skeeve.com>
+
+	* gawktexi.in: Expand tab characters.
+
 2017-02-13         Arnold D. Robbins     <arnold@skeeve.com>
 
 	* gawktexi.in: Fix two typos.
diff --git a/doc/gawk.info b/doc/gawk.info
index 1388b32b..188f22ca 100644
--- a/doc/gawk.info
+++ b/doc/gawk.info
@@ -15312,8 +15312,8 @@ infinite recursion if you don't pay attention.  Here is an example use:
 
      $ cat test.awk
      -| FNR == 3 && ! rewound {
-     -| 	rewound = 1
-     -| 	rewind()
+     -|    rewound = 1
+     -|    rewind()
      -| }
      -|
      -| { print FILENAME, FNR, $0 }
@@ -25755,7 +25755,7 @@ The 'inplace' extension emulates GNU 'sed''s '-i' option, which performs
      # actions in an ENDFILE rule will be redirected as expected.
 
      BEGIN {
-         inplace = 1		# enabled by default
+         inplace = 1         # enabled by default
      }
 
      BEGINFILE {
@@ -34886,270 +34886,270 @@ Node: Shell Quoting631338
 Node: Data File Management632739
 Node: Filetrans Function633371
 Node: Rewind Function637467
-Node: File Checking639373
-Ref: File Checking-Footnote-1640707
-Node: Empty Files640908
-Node: Ignoring Assigns642887
-Node: Getopt Function644437
-Ref: Getopt Function-Footnote-1655906
-Node: Passwd Functions656106
-Ref: Passwd Functions-Footnote-1664945
-Node: Group Functions665033
-Ref: Group Functions-Footnote-1672931
-Node: Walking Arrays673138
-Node: Library Functions Summary676146
-Node: Library Exercises677552
-Node: Sample Programs678017
-Node: Running Examples678787
-Node: Clones679515
-Node: Cut Program680739
-Node: Egrep Program690668
-Ref: Egrep Program-Footnote-1698180
-Node: Id Program698290
-Node: Split Program701970
-Ref: Split Program-Footnote-1705429
-Node: Tee Program705558
-Node: Uniq Program708348
-Node: Wc Program715774
-Ref: Wc Program-Footnote-1720029
-Node: Miscellaneous Programs720123
-Node: Dupword Program721336
-Node: Alarm Program723366
-Node: Translate Program728221
-Ref: Translate Program-Footnote-1732786
-Node: Labels Program733056
-Ref: Labels Program-Footnote-1736407
-Node: Word Sorting736491
-Node: History Sorting740563
-Node: Extract Program742398
-Node: Simple Sed749927
-Node: Igawk Program753001
-Ref: Igawk Program-Footnote-1767332
-Ref: Igawk Program-Footnote-2767534
-Ref: Igawk Program-Footnote-3767656
-Node: Anagram Program767771
-Node: Signature Program770833
-Node: Programs Summary772080
-Node: Programs Exercises773294
-Ref: Programs Exercises-Footnote-1777423
-Node: Advanced Features777514
-Node: Nondecimal Data779504
-Node: Array Sorting781095
-Node: Controlling Array Traversal781795
-Ref: Controlling Array Traversal-Footnote-1790162
-Node: Array Sorting Functions790280
-Ref: Array Sorting Functions-Footnote-1795371
-Node: Two-way I/O795567
-Ref: Two-way I/O-Footnote-1801861
-Ref: Two-way I/O-Footnote-2802048
-Node: TCP/IP Networking802130
-Node: Profiling805248
-Node: Advanced Features Summary812787
-Node: Internationalization814723
-Node: I18N and L10N816203
-Node: Explaining gettext816890
-Ref: Explaining gettext-Footnote-1822782
-Ref: Explaining gettext-Footnote-2822967
-Node: Programmer i18n823132
-Ref: Programmer i18n-Footnote-1828081
-Node: Translator i18n828130
-Node: String Extraction828924
-Ref: String Extraction-Footnote-1830056
-Node: Printf Ordering830142
-Ref: Printf Ordering-Footnote-1832928
-Node: I18N Portability832992
-Ref: I18N Portability-Footnote-1835448
-Node: I18N Example835511
-Ref: I18N Example-Footnote-1838317
-Node: Gawk I18N838390
-Node: I18N Summary839035
-Node: Debugger840376
-Node: Debugging841398
-Node: Debugging Concepts841839
-Node: Debugging Terms843648
-Node: Awk Debugging846223
-Node: Sample Debugging Session847129
-Node: Debugger Invocation847663
-Node: Finding The Bug849049
-Node: List of Debugger Commands855527
-Node: Breakpoint Control856860
-Node: Debugger Execution Control860554
-Node: Viewing And Changing Data863916
-Node: Execution Stack867290
-Node: Debugger Info868927
-Node: Miscellaneous Debugger Commands872998
-Node: Readline Support878086
-Node: Limitations878982
-Node: Debugging Summary881091
-Node: Arbitrary Precision Arithmetic882264
-Node: Computer Arithmetic883680
-Ref: table-numeric-ranges887271
-Ref: Computer Arithmetic-Footnote-1887993
-Node: Math Definitions888050
-Ref: table-ieee-formats891364
-Ref: Math Definitions-Footnote-1891967
-Node: MPFR features892072
-Node: FP Math Caution893789
-Ref: FP Math Caution-Footnote-1894861
-Node: Inexactness of computations895230
-Node: Inexact representation896190
-Node: Comparing FP Values897550
-Node: Errors accumulate898632
-Node: Getting Accuracy900065
-Node: Try To Round902775
-Node: Setting precision903674
-Ref: table-predefined-precision-strings904371
-Node: Setting the rounding mode906201
-Ref: table-gawk-rounding-modes906575
-Ref: Setting the rounding mode-Footnote-1909983
-Node: Arbitrary Precision Integers910162
-Ref: Arbitrary Precision Integers-Footnote-1913146
-Node: POSIX Floating Point Problems913295
-Ref: POSIX Floating Point Problems-Footnote-1917177
-Node: Floating point summary917215
-Node: Dynamic Extensions919405
-Node: Extension Intro920958
-Node: Plugin License922224
-Node: Extension Mechanism Outline923021
-Ref: figure-load-extension923460
-Ref: figure-register-new-function925025
-Ref: figure-call-new-function926117
-Node: Extension API Description928179
-Node: Extension API Functions Introduction929627
-Node: General Data Types934439
-Ref: General Data Types-Footnote-1940394
-Node: Memory Allocation Functions940693
-Ref: Memory Allocation Functions-Footnote-1943538
-Node: Constructor Functions943637
-Node: Registration Functions945382
-Node: Extension Functions946067
-Node: Exit Callback Functions948366
-Node: Extension Version String949616
-Node: Input Parsers950279
-Node: Output Wrappers960161
-Node: Two-way processors964673
-Node: Printing Messages966938
-Ref: Printing Messages-Footnote-1968012
-Node: Updating ERRNO968165
-Node: Requesting Values968904
-Ref: table-value-types-returned969641
-Node: Accessing Parameters970524
-Node: Symbol Table Access971759
-Node: Symbol table by name972271
-Node: Symbol table by cookie974292
-Ref: Symbol table by cookie-Footnote-1978444
-Node: Cached values978508
-Ref: Cached values-Footnote-1982015
-Node: Array Manipulation982106
-Ref: Array Manipulation-Footnote-1983205
-Node: Array Data Types983242
-Ref: Array Data Types-Footnote-1985900
-Node: Array Functions985992
-Node: Flattening Arrays989850
-Node: Creating Arrays996758
-Node: Extension API Variables1001527
-Node: Extension Versioning1002163
-Ref: gawk-api-version1002600
-Node: Extension API Informational Variables1004356
-Node: Extension API Boilerplate1005420
-Node: Finding Extensions1009234
-Node: Extension Example1009793
-Node: Internal File Description1010591
-Node: Internal File Ops1014671
-Ref: Internal File Ops-Footnote-11026433
-Node: Using Internal File Ops1026573
-Ref: Using Internal File Ops-Footnote-11028956
-Node: Extension Samples1029230
-Node: Extension Sample File Functions1030759
-Node: Extension Sample Fnmatch1038408
-Node: Extension Sample Fork1039895
-Node: Extension Sample Inplace1041113
-Node: Extension Sample Ord1044323
-Node: Extension Sample Readdir1045159
-Ref: table-readdir-file-types1046048
-Node: Extension Sample Revout1046853
-Node: Extension Sample Rev2way1047442
-Node: Extension Sample Read write array1048182
-Node: Extension Sample Readfile1050124
-Node: Extension Sample Time1051219
-Node: Extension Sample API Tests1052567
-Node: gawkextlib1053059
-Node: Extension summary1055483
-Node: Extension Exercises1059175
-Node: Language History1060673
-Node: V7/SVR3.11062329
-Node: SVR41064481
-Node: POSIX1065915
-Node: BTL1067294
-Node: POSIX/GNU1068023
-Node: Feature History1073544
-Node: Common Extensions1086873
-Node: Ranges and Locales1088156
-Ref: Ranges and Locales-Footnote-11092772
-Ref: Ranges and Locales-Footnote-21092799
-Ref: Ranges and Locales-Footnote-31093034
-Node: Contributors1093255
-Node: History summary1098815
-Node: Installation1100195
-Node: Gawk Distribution1101139
-Node: Getting1101623
-Node: Extracting1102584
-Node: Distribution contents1104222
-Node: Unix Installation1109964
-Node: Quick Installation1110580
-Node: Additional Configuration Options1113007
-Node: Configuration Philosophy1114811
-Node: Non-Unix Installation1117180
-Node: PC Installation1117640
-Node: PC Binary Installation1118478
-Node: PC Compiling1118913
-Node: PC Using1120030
-Node: Cygwin1123075
-Node: MSYS1123845
-Node: VMS Installation1124346
-Node: VMS Compilation1125137
-Ref: VMS Compilation-Footnote-11126366
-Node: VMS Dynamic Extensions1126424
-Node: VMS Installation Details1128109
-Node: VMS Running1130362
-Node: VMS GNV1134641
-Node: VMS Old Gawk1135376
-Node: Bugs1135847
-Node: Bug address1136510
-Node: Usenet1138907
-Node: Maintainers1139684
-Node: Other Versions1141060
-Node: Installation summary1147644
-Node: Notes1148679
-Node: Compatibility Mode1149544
-Node: Additions1150326
-Node: Accessing The Source1151251
-Node: Adding Code1152686
-Node: New Ports1158904
-Node: Derived Files1163392
-Ref: Derived Files-Footnote-11168877
-Ref: Derived Files-Footnote-21168912
-Ref: Derived Files-Footnote-31169510
-Node: Future Extensions1169624
-Node: Implementation Limitations1170282
-Node: Extension Design1171465
-Node: Old Extension Problems1172619
-Ref: Old Extension Problems-Footnote-11174137
-Node: Extension New Mechanism Goals1174194
-Ref: Extension New Mechanism Goals-Footnote-11177558
-Node: Extension Other Design Decisions1177747
-Node: Extension Future Growth1179860
-Node: Old Extension Mechanism1180696
-Node: Notes summary1182459
-Node: Basic Concepts1183641
-Node: Basic High Level1184322
-Ref: figure-general-flow1184604
-Ref: figure-process-flow1185289
-Ref: Basic High Level-Footnote-11188590
-Node: Basic Data Typing1188775
-Node: Glossary1192103
-Node: Copying1224050
-Node: GNU Free Documentation License1261589
-Node: Index1286707
+Node: File Checking639377
+Ref: File Checking-Footnote-1640711
+Node: Empty Files640912
+Node: Ignoring Assigns642891
+Node: Getopt Function644441
+Ref: Getopt Function-Footnote-1655910
+Node: Passwd Functions656110
+Ref: Passwd Functions-Footnote-1664949
+Node: Group Functions665037
+Ref: Group Functions-Footnote-1672935
+Node: Walking Arrays673142
+Node: Library Functions Summary676150
+Node: Library Exercises677556
+Node: Sample Programs678021
+Node: Running Examples678791
+Node: Clones679519
+Node: Cut Program680743
+Node: Egrep Program690672
+Ref: Egrep Program-Footnote-1698184
+Node: Id Program698294
+Node: Split Program701974
+Ref: Split Program-Footnote-1705433
+Node: Tee Program705562
+Node: Uniq Program708352
+Node: Wc Program715778
+Ref: Wc Program-Footnote-1720033
+Node: Miscellaneous Programs720127
+Node: Dupword Program721340
+Node: Alarm Program723370
+Node: Translate Program728225
+Ref: Translate Program-Footnote-1732790
+Node: Labels Program733060
+Ref: Labels Program-Footnote-1736411
+Node: Word Sorting736495
+Node: History Sorting740567
+Node: Extract Program742402
+Node: Simple Sed749931
+Node: Igawk Program753005
+Ref: Igawk Program-Footnote-1767336
+Ref: Igawk Program-Footnote-2767538
+Ref: Igawk Program-Footnote-3767660
+Node: Anagram Program767775
+Node: Signature Program770837
+Node: Programs Summary772084
+Node: Programs Exercises773298
+Ref: Programs Exercises-Footnote-1777427
+Node: Advanced Features777518
+Node: Nondecimal Data779508
+Node: Array Sorting781099
+Node: Controlling Array Traversal781799
+Ref: Controlling Array Traversal-Footnote-1790166
+Node: Array Sorting Functions790284
+Ref: Array Sorting Functions-Footnote-1795375
+Node: Two-way I/O795571
+Ref: Two-way I/O-Footnote-1801865
+Ref: Two-way I/O-Footnote-2802052
+Node: TCP/IP Networking802134
+Node: Profiling805252
+Node: Advanced Features Summary812791
+Node: Internationalization814727
+Node: I18N and L10N816207
+Node: Explaining gettext816894
+Ref: Explaining gettext-Footnote-1822786
+Ref: Explaining gettext-Footnote-2822971
+Node: Programmer i18n823136
+Ref: Programmer i18n-Footnote-1828085
+Node: Translator i18n828134
+Node: String Extraction828928
+Ref: String Extraction-Footnote-1830060
+Node: Printf Ordering830146
+Ref: Printf Ordering-Footnote-1832932
+Node: I18N Portability832996
+Ref: I18N Portability-Footnote-1835452
+Node: I18N Example835515
+Ref: I18N Example-Footnote-1838321
+Node: Gawk I18N838394
+Node: I18N Summary839039
+Node: Debugger840380
+Node: Debugging841402
+Node: Debugging Concepts841843
+Node: Debugging Terms843652
+Node: Awk Debugging846227
+Node: Sample Debugging Session847133
+Node: Debugger Invocation847667
+Node: Finding The Bug849053
+Node: List of Debugger Commands855531
+Node: Breakpoint Control856864
+Node: Debugger Execution Control860558
+Node: Viewing And Changing Data863920
+Node: Execution Stack867294
+Node: Debugger Info868931
+Node: Miscellaneous Debugger Commands873002
+Node: Readline Support878090
+Node: Limitations878986
+Node: Debugging Summary881095
+Node: Arbitrary Precision Arithmetic882268
+Node: Computer Arithmetic883684
+Ref: table-numeric-ranges887275
+Ref: Computer Arithmetic-Footnote-1887997
+Node: Math Definitions888054
+Ref: table-ieee-formats891368
+Ref: Math Definitions-Footnote-1891971
+Node: MPFR features892076
+Node: FP Math Caution893793
+Ref: FP Math Caution-Footnote-1894865
+Node: Inexactness of computations895234
+Node: Inexact representation896194
+Node: Comparing FP Values897554
+Node: Errors accumulate898636
+Node: Getting Accuracy900069
+Node: Try To Round902779
+Node: Setting precision903678
+Ref: table-predefined-precision-strings904375
+Node: Setting the rounding mode906205
+Ref: table-gawk-rounding-modes906579
+Ref: Setting the rounding mode-Footnote-1909987
+Node: Arbitrary Precision Integers910166
+Ref: Arbitrary Precision Integers-Footnote-1913150
+Node: POSIX Floating Point Problems913299
+Ref: POSIX Floating Point Problems-Footnote-1917181
+Node: Floating point summary917219
+Node: Dynamic Extensions919409
+Node: Extension Intro920962
+Node: Plugin License922228
+Node: Extension Mechanism Outline923025
+Ref: figure-load-extension923464
+Ref: figure-register-new-function925029
+Ref: figure-call-new-function926121
+Node: Extension API Description928183
+Node: Extension API Functions Introduction929631
+Node: General Data Types934443
+Ref: General Data Types-Footnote-1940398
+Node: Memory Allocation Functions940697
+Ref: Memory Allocation Functions-Footnote-1943542
+Node: Constructor Functions943641
+Node: Registration Functions945386
+Node: Extension Functions946071
+Node: Exit Callback Functions948370
+Node: Extension Version String949620
+Node: Input Parsers950283
+Node: Output Wrappers960165
+Node: Two-way processors964677
+Node: Printing Messages966942
+Ref: Printing Messages-Footnote-1968016
+Node: Updating ERRNO968169
+Node: Requesting Values968908
+Ref: table-value-types-returned969645
+Node: Accessing Parameters970528
+Node: Symbol Table Access971763
+Node: Symbol table by name972275
+Node: Symbol table by cookie974296
+Ref: Symbol table by cookie-Footnote-1978448
+Node: Cached values978512
+Ref: Cached values-Footnote-1982019
+Node: Array Manipulation982110
+Ref: Array Manipulation-Footnote-1983209
+Node: Array Data Types983246
+Ref: Array Data Types-Footnote-1985904
+Node: Array Functions985996
+Node: Flattening Arrays989854
+Node: Creating Arrays996762
+Node: Extension API Variables1001531
+Node: Extension Versioning1002167
+Ref: gawk-api-version1002604
+Node: Extension API Informational Variables1004360
+Node: Extension API Boilerplate1005424
+Node: Finding Extensions1009238
+Node: Extension Example1009797
+Node: Internal File Description1010595
+Node: Internal File Ops1014675
+Ref: Internal File Ops-Footnote-11026437
+Node: Using Internal File Ops1026577
+Ref: Using Internal File Ops-Footnote-11028960
+Node: Extension Samples1029234
+Node: Extension Sample File Functions1030763
+Node: Extension Sample Fnmatch1038412
+Node: Extension Sample Fork1039899
+Node: Extension Sample Inplace1041117
+Node: Extension Sample Ord1044334
+Node: Extension Sample Readdir1045170
+Ref: table-readdir-file-types1046059
+Node: Extension Sample Revout1046864
+Node: Extension Sample Rev2way1047453
+Node: Extension Sample Read write array1048193
+Node: Extension Sample Readfile1050135
+Node: Extension Sample Time1051230
+Node: Extension Sample API Tests1052578
+Node: gawkextlib1053070
+Node: Extension summary1055494
+Node: Extension Exercises1059186
+Node: Language History1060684
+Node: V7/SVR3.11062340
+Node: SVR41064492
+Node: POSIX1065926
+Node: BTL1067305
+Node: POSIX/GNU1068034
+Node: Feature History1073555
+Node: Common Extensions1086884
+Node: Ranges and Locales1088167
+Ref: Ranges and Locales-Footnote-11092783
+Ref: Ranges and Locales-Footnote-21092810
+Ref: Ranges and Locales-Footnote-31093045
+Node: Contributors1093266
+Node: History summary1098826
+Node: Installation1100206
+Node: Gawk Distribution1101150
+Node: Getting1101634
+Node: Extracting1102595
+Node: Distribution contents1104233
+Node: Unix Installation1109975
+Node: Quick Installation1110591
+Node: Additional Configuration Options1113018
+Node: Configuration Philosophy1114822
+Node: Non-Unix Installation1117191
+Node: PC Installation1117651
+Node: PC Binary Installation1118489
+Node: PC Compiling1118924
+Node: PC Using1120041
+Node: Cygwin1123086
+Node: MSYS1123856
+Node: VMS Installation1124357
+Node: VMS Compilation1125148
+Ref: VMS Compilation-Footnote-11126377
+Node: VMS Dynamic Extensions1126435
+Node: VMS Installation Details1128120
+Node: VMS Running1130373
+Node: VMS GNV1134652
+Node: VMS Old Gawk1135387
+Node: Bugs1135858
+Node: Bug address1136521
+Node: Usenet1138918
+Node: Maintainers1139695
+Node: Other Versions1141071
+Node: Installation summary1147655
+Node: Notes1148690
+Node: Compatibility Mode1149555
+Node: Additions1150337
+Node: Accessing The Source1151262
+Node: Adding Code1152697
+Node: New Ports1158915
+Node: Derived Files1163403
+Ref: Derived Files-Footnote-11168888
+Ref: Derived Files-Footnote-21168923
+Ref: Derived Files-Footnote-31169521
+Node: Future Extensions1169635
+Node: Implementation Limitations1170293
+Node: Extension Design1171476
+Node: Old Extension Problems1172630
+Ref: Old Extension Problems-Footnote-11174148
+Node: Extension New Mechanism Goals1174205
+Ref: Extension New Mechanism Goals-Footnote-11177569
+Node: Extension Other Design Decisions1177758
+Node: Extension Future Growth1179871
+Node: Old Extension Mechanism1180707
+Node: Notes summary1182470
+Node: Basic Concepts1183652
+Node: Basic High Level1184333
+Ref: figure-general-flow1184615
+Ref: figure-process-flow1185300
+Ref: Basic High Level-Footnote-11188601
+Node: Basic Data Typing1188786
+Node: Glossary1192114
+Node: Copying1224061
+Node: GNU Free Documentation License1261600
+Node: Index1286718
 
 End Tag Table
diff --git a/doc/gawk.texi b/doc/gawk.texi
index 5a5a395d..38731606 100644
--- a/doc/gawk.texi
+++ b/doc/gawk.texi
@@ -21725,8 +21725,8 @@ $ @kbd{cat data}
 
 $ cat @kbd{test.awk}
 @print{} FNR == 3 && ! rewound @{
-@print{} 	rewound = 1
-@print{} 	rewind()
+@print{}    rewound = 1
+@print{}    rewind()
 @print{} @}
 @print{} 
 @print{} @{ print FILENAME, FNR, $0 @}
@@ -34773,7 +34773,7 @@ properly:
 # actions in an ENDFILE rule will be redirected as expected.
 
 BEGIN @{
-    inplace = 1		# enabled by default
+    inplace = 1         # enabled by default
 @}
 
 BEGINFILE @{
diff --git a/doc/gawktexi.in b/doc/gawktexi.in
index ee4c39b9..868db437 100644
--- a/doc/gawktexi.in
+++ b/doc/gawktexi.in
@@ -20816,8 +20816,8 @@ $ @kbd{cat data}
 
 $ cat @kbd{test.awk}
 @print{} FNR == 3 && ! rewound @{
-@print{} 	rewound = 1
-@print{} 	rewind()
+@print{}    rewound = 1
+@print{}    rewind()
 @print{} @}
 @print{} 
 @print{} @{ print FILENAME, FNR, $0 @}
@@ -33864,7 +33864,7 @@ properly:
 # actions in an ENDFILE rule will be redirected as expected.
 
 BEGIN @{
-    inplace = 1		# enabled by default
+    inplace = 1         # enabled by default
 @}
 
 BEGINFILE @{