[SCM] gawk branch, gawk-5.3-stable, updated. gawk-4.1.0-5526-g5292ce3f

[Arnold Robbins]

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- Log -----------------------------------------------------------------
http://git.sv.gnu.org/cgit/gawk.git/commit/?id=5292ce3f3295deaf73e3bd4f8919c4f8aebdfa05

commit 5292ce3f3295deaf73e3bd4f8919c4f8aebdfa05
Author: Arnold D. Robbins <arnold@skeeve.com>
Date:   Thu Sep 12 08:47:34 2024 +0300

    Add two exercises for egrep to the manual.

diff --git a/doc/ChangeLog b/doc/ChangeLog
index 403c94ba..dc757096 100644
--- a/doc/ChangeLog
+++ b/doc/ChangeLog
@@ -1,3 +1,8 @@
+2024-09-12         Arnold D. Robbins     <arnold@skeeve.com>
+
+       * gawk.texi (Programs Exercises): Add two exercises related
+       to egrep.
+
 2024-09-10         Arnold D. Robbins     <arnold@skeeve.com>
 
        * gawk.texi (Other Versions): Add info about`wak'.
diff --git a/doc/gawk.info b/doc/gawk.info
index 4176805b..2c72be5b 100644
--- a/doc/gawk.info
+++ b/doc/gawk.info
@@ -21449,18 +21449,28 @@ File: gawk.info,  Node: Programs Exercises,  Prev: 
Programs Summary,  Up: Sample
      also mentioned that this solution has a bug: the translated line is
      output, and not the original one.  Fix this problem.
 
-  3. The POSIX version of ‘id’ takes options that control which
+  3. POSIX versions of ‘grep’ accept a ‘-F’ option which causes 
‘grep’
+     to match fixed strings.  Add support for this to ‘egrep.awk’.
+
+  4. Similarly, POSIX versions of ‘grep’ allow you to provide multiple
+     patterns to match, in either of two ways.  You may provide a quoted
+     string on the command line where the patterns are separated by
+     newlines.  Or you may use the ‘-f’ option to provide a file
+     containing the patterns, one per line.  Implement both of these
+     features.
+
+  5. The POSIX version of ‘id’ takes options that control which
      information is printed.  Modify the ‘awk’ version (*note Id
      Program::) to accept the same arguments and perform in the same
      way.
 
-  4. The ‘split.awk’ program (*note Split Program::) assumes that
+  6. The ‘split.awk’ program (*note Split Program::) assumes that
      letters are contiguous in the character set, which isn't true for
      EBCDIC systems.  Fix this problem.  (Hint: Consider a different way
      to work through the alphabet, without relying on ‘ord()’ and
      ‘chr()’.)
 
-  5. In ‘uniq.awk’ (*note Uniq Program::, the logic for choosing which
+  7. In ‘uniq.awk’ (*note Uniq Program::, the logic for choosing which
      lines to print represents a “state machine”, which is "a device
      which can be in one of a set number of stable conditions depending
      on its previous condition and on the present values of its
@@ -21470,21 +21480,21 @@ File: gawk.info,  Node: Programs Exercises,  Prev: 
Programs Summary,  Up: Sample
      where you would use this, just as fast."  Rewrite the logic to
      follow this suggestion.
 
-  6. Why can't the ‘wc.awk’ program (*note Wc Program::) just use the
+  8. Why can't the ‘wc.awk’ program (*note Wc Program::) just use the
      value of ‘FNR’ in ‘endfile()’?  Hint: Examine the code in *note
      Filetrans Function::.
 
-  7. Manipulation of individual characters in the ‘translate’ program
+  9. Manipulation of individual characters in the ‘translate’ program
      (*note Translate Program::) is painful using standard ‘awk’
      functions.  Given that ‘gawk’ can split strings into individual
      characters using ‘""’ as the separator, how might you use this
      feature to simplify the program?
 
-  8. The ‘extract.awk’ program (*note Extract Program::) was written
+  10. The ‘extract.awk’ program (*note Extract Program::) was written
      before ‘gawk’ had the ‘gensub()’ function.  Use it to simplify the
      code.
 
-  9. Compare the performance of the ‘awksed.awk’ program (*note Simple
+  11. Compare the performance of the ‘awksed.awk’ program (*note Simple
      Sed::) with the more straightforward:
 
           BEGIN {
@@ -21495,16 +21505,16 @@ File: gawk.info,  Node: Programs Exercises,  Prev: 
Programs Summary,  Up: Sample
 
           { gsub(pat, repl); print }
 
-  10. What are the advantages and disadvantages of ‘awksed.awk’ versus
+  12. What are the advantages and disadvantages of ‘awksed.awk’ versus
      the real ‘sed’ utility?
 
-  11. In *note Igawk Program::, we mentioned that not trying to save the
+  13. In *note Igawk Program::, we mentioned that not trying to save the
      line read with ‘getline’ in the ‘pathto()’ function when testing
      for the file's accessibility for use with the main program
      simplifies things considerably.  What problem does this engender
      though?
 
-  12. As an additional example of the idea that it is not always
+  14. As an additional example of the idea that it is not always
      necessary to add new features to a program, consider the idea of
      having two files in a directory in the search path:
 
@@ -21526,7 +21536,7 @@ File: gawk.info,  Node: Programs Exercises,  Prev: 
Programs Summary,  Up: Sample
      ‘@include’ directives for the desired library functions.  Make this
      change.
 
-  13. Modify ‘anagram.awk’ (*note Anagram Program::), to avoid the use
+  15. Modify ‘anagram.awk’ (*note Anagram Program::), to avoid the use
      of the external ‘sort’ utility.
 
    ---------- Footnotes ----------
@@ -37576,7 +37586,7 @@ Index
                                                               (line   6)
 * directories, searching, for source files: AWKPATH Variable. (line   6)
 * directories, searching, for source files <1>: Programs Exercises.
-                                                              (line  70)
+                                                              (line  80)
 * disable breakpoint:                    Breakpoint Control.  (line  69)
 * disable debugger command:              Breakpoint Control.  (line  69)
 * display debugger command:              Viewing And Changing Data.
@@ -37972,7 +37982,7 @@ Index
 * files, reading, multiline records:     Multiple Line.       (line   6)
 * files, searching for regular expressions: Egrep Program.    (line   6)
 * files, skipping:                       File Checking.       (line   6)
-* files, source, search path for:        Programs Exercises.  (line  70)
+* files, source, search path for:        Programs Exercises.  (line  80)
 * files, splitting:                      Split Program.       (line   6)
 * files, Texinfo, extracting programs from: Extract Program.  (line   6)
 * find substring in string:              String Functions.    (line 174)
@@ -38502,7 +38512,7 @@ Index
 * Kernighan, Brian, quotes <2>:          Getline/Pipe.        (line   6)
 * Kernighan, Brian, quotes <3>:          Concatenation.       (line   6)
 * Kernighan, Brian, quotes <4>:          Library Functions.   (line  12)
-* Kernighan, Brian, quotes <5>:          Programs Exercises.  (line  26)
+* Kernighan, Brian, quotes <5>:          Programs Exercises.  (line  36)
 * kill command, dynamic profiling:       Profiling.           (line 194)
 * knights, jedi:                         Undocumented.        (line   6)
 * Kwok, Conrad:                          Contributors.        (line  35)
@@ -39353,12 +39363,12 @@ Index
 * Schreiber, Rita:                       Acknowledgments.     (line  38)
 * search and replace in strings:         String Functions.    (line  98)
 * search for substring:                  String Functions.    (line 174)
-* search paths:                          Programs Exercises.  (line  70)
+* search paths:                          Programs Exercises.  (line  80)
 * search paths <1>:                      PC Using.            (line  12)
 * search paths <2>:                      OpenVMS Running.     (line  50)
 * search paths, for loadable extensions: AWKLIBPATH Variable. (line   6)
 * search paths, for source files:        AWKPATH Variable.    (line   6)
-* search paths, for source files <1>:    Programs Exercises.  (line  70)
+* search paths, for source files <1>:    Programs Exercises.  (line  80)
 * search paths, for source files <2>:    PC Using.            (line  12)
 * search paths, for source files <3>:    OpenVMS Running.     (line  50)
 * searching, files for regular expressions: Egrep Program.    (line   6)
@@ -39546,7 +39556,7 @@ Index
 * source code, QuikTrim Awk:             Other Versions.      (line 184)
 * source code, Solaris awk:              Other Versions.      (line 106)
 * source file, show in debugger:         Debugger Info.       (line  37)
-* source files, search path for:         Programs Exercises.  (line  70)
+* source files, search path for:         Programs Exercises.  (line  80)
 * sparse arrays:                         Array Intro.         (line  78)
 * Spencer, Henry:                        Glossary.            (line  16)
 * Spengler, Egon:                        Gory Details.        (line   6)
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+Node: Extension Sample API Tests1262169
+Node: gawkextlib1262677
+Node: Extension summary1265709
+Node: Extension Exercises1269557
+Node: Language History1270827
+Node: V7/SVR3.11272539
+Node: SVR41274889
+Node: POSIX1276421
+Node: BTL1277846
+Node: POSIX/GNU1278613
+Ref: Gawk Extension Functions1282003
+Node: Feature History1285427
+Node: Common Extensions1305268
+Node: Ranges and Locales1306743
+Ref: Ranges and Locales-Footnote-11311528
+Ref: Ranges and Locales-Footnote-21311555
+Ref: Ranges and Locales-Footnote-31311790
+Node: Contributors1312013
+Node: History summary1318204
+Node: Installation1319646
+Node: Gawk Distribution1320610
+Node: Getting1321102
+Node: Extracting1322101
+Node: Distribution contents1323807
+Node: Unix Installation1331697
+Node: Quick Installation1332517
+Node: Compiling with MPFR1335057
+Node: Shell Startup Files1335763
+Node: Additional Configuration Options1336920
+Node: Configuration Philosophy1339303
+Node: Compiling from Git1341803
+Node: Building the Documentation1342362
+Node: Non-Unix Installation1343774
+Node: PC Installation1344250
+Node: PC Binary Installation1345119
+Node: PC Compiling1346012
+Node: PC Using1347190
+Node: Cygwin1350906
+Node: MSYS1352158
+Node: OpenVMS Installation1352784
+Node: OpenVMS Compilation1353465
+Ref: OpenVMS Compilation-Footnote-11354948
+Node: OpenVMS Dynamic Extensions1355006
+Node: OpenVMS Installation Details1356642
+Node: OpenVMS Running1359073
+Node: OpenVMS GNV1363210
+Node: Bugs1363965
+Node: Bug definition1364885
+Node: Bug address1368486
+Node: Usenet1372055
+Node: Performance bugs1373268
+Node: Asking for help1376272
+Node: Maintainers1378259
+Node: Other Versions1379286
+Node: Installation summary1389275
+Node: Notes1390657
+Node: Compatibility Mode1391467
+Node: Additions1392289
+Node: Accessing The Source1393234
+Node: Adding Code1394765
+Node: New Ports1401876
+Node: Derived Files1406379
+Ref: Derived Files-Footnote-11412190
+Ref: Derived Files-Footnote-21412225
+Ref: Derived Files-Footnote-31412836
+Node: Future Extensions1412950
+Node: Implementation Limitations1413620
+Node: Extension Design1414862
+Node: Old Extension Problems1416022
+Ref: Old Extension Problems-Footnote-11417594
+Node: Extension New Mechanism Goals1417655
+Ref: Extension New Mechanism Goals-Footnote-11421125
+Node: Extension Other Design Decisions1421326
+Node: Extension Future Growth1423523
+Node: Notes summary1424143
+Node: Basic Concepts1425353
+Node: Basic High Level1426038
+Ref: figure-general-flow1426320
+Ref: figure-process-flow1427022
+Ref: Basic High Level-Footnote-11430392
+Node: Basic Data Typing1430581
+Node: Glossary1433989
+Node: Copying1466867
+Node: GNU Free Documentation License1504425
+Node: Index1529548
 
 End Tag Table
 
diff --git a/doc/gawk.texi b/doc/gawk.texi
index a305ac2d..7493006c 100644
--- a/doc/gawk.texi
+++ b/doc/gawk.texi
@@ -29013,6 +29013,20 @@ we also mentioned that this solution has a bug: the 
translated line is
 output, and not the original one.  Fix this problem.
 @c Exercise: Fix this, w/array and new line as key to original line
 
+@item
+POSIX versions of @command{grep} accept a @option{-F} option which
+causes @command{grep} to match fixed strings. Add support for
+this to @file{egrep.awk}.
+
+@item
+Similarly, POSIX versions of @command{grep} allow you to
+provide multiple patterns to match, in either of two ways.
+You may provide a quoted string on the command line where
+the patterns are separated by newlines. Or you may use the
+@option{-f} option to provide a file containing the patterns,
+one per line.
+Implement both of these features.
+
 @item
 The POSIX version of @command{id} takes options that control which
 information is printed.  Modify the @command{awk} version

-----------------------------------------------------------------------

Summary of changes:
 doc/ChangeLog |   5 +
 doc/gawk.info | 552 ++++++++++++++++++++++++++++++----------------------------
 doc/gawk.texi |  14 ++
 3 files changed, 300 insertions(+), 271 deletions(-)


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