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[gawk-diffs] [SCM] gawk branch, master, updated. gawk-4.1.0-79-g7d19cbd
|
From: |
Arnold Robbins |
|
Subject: |
[gawk-diffs] [SCM] gawk branch, master, updated. gawk-4.1.0-79-g7d19cbd |
|
Date: |
Mon, 19 Aug 2013 17:49:11 +0000 |
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the project "gawk".
The branch, master has been updated
via 7d19cbd54ad60474aded4b9fe587c7f53a14d488 (commit)
from f106ce81c596748a0df5b5ccca61e2f989ad9e1d (commit)
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not appeared on any other notification email; so we list those
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- Log -----------------------------------------------------------------
http://git.sv.gnu.org/cgit/gawk.git/commit/?id=7d19cbd54ad60474aded4b9fe587c7f53a14d488
commit 7d19cbd54ad60474aded4b9fe587c7f53a14d488
Author: Arnold D. Robbins <address@hidden>
Date: Mon Aug 19 20:47:49 2013 +0300
Changes to ENVIRON reflect into the environment.
diff --git a/ChangeLog b/ChangeLog
index 1ce515c..0097da9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,13 @@
+2013-08-18 Arnold D. Robbins <address@hidden>
+
+ Reflect updates to ENVIRON into the real environment.
+
+ * awk.h (init_env_array): Add declaration.
+ * main.c (load_environ): Call init_env_array.
+ * str_array.c (env_remove, env_store, env_clear, init_env_array):
+ New functions.
+ (env_array_func): New array vtable.
+
2013-08-15 Arnold D. Robbins <address@hidden>
* debug.c (print_memory): Fix whitespace / indentation.
diff --git a/NEWS b/NEWS
index e0a4ffa..b6f97d5 100644
--- a/NEWS
+++ b/NEWS
@@ -4,6 +4,13 @@
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved.
+Changes from 4.1.1 to 4.2.0
+---------------------------
+
+1. If not in POSIX mode, changes to ENVIRON are reflected into
+ gawk's environment, affecting any programs run by system()
+ or for piped redirections.
+
Changes from 4.1.0 to 4.1.1
---------------------------
diff --git a/TODO b/TODO
index f08d82d..e30a761 100644
--- a/TODO
+++ b/TODO
@@ -50,9 +50,6 @@ Minor New Features
Add a readfile() function in awk from mail.
- Make writes to ENVIRON / deletions affect the real environment
- using setenv / unsetenv.
-
Consider relaxing the strictness of --posix.
? Add an optional base to strtonum, allowing 2-36.
diff --git a/array.c b/array.c
index 92a1cb8..a0ddf58 100644
--- a/array.c
+++ b/array.c
@@ -113,21 +113,14 @@ null_array(NODE *symbol)
symbol->table_size = symbol->array_size = 0;
symbol->array_capacity = 0;
symbol->flags = 0;
- /*
- * 5/2013: This used to be
- *
- * assert(symbol->xarray == NULL);
- *
- * But that seems to cause problems for no good reason
- * that I can see. I believe it to be an artifact of the
- * union getting in the way.
- */
- symbol->xarray = NULL;
+
+ assert(symbol->xarray == NULL);
+
/* vname, parent_array not (re)initialized */
}
-/* null_lookup: assign type to an empty array. */
+/* null_lookup --- assign type to an empty array. */
static NODE **
null_lookup(NODE *symbol, NODE *subs)
@@ -349,6 +342,7 @@ force_array(NODE *symbol, bool canfatal)
switch (symbol->type) {
case Node_var_new:
+ symbol->xarray = NULL; /* make sure union is as it should be */
null_array(symbol);
symbol->parent_array = NULL; /* main array has no parent */
/* fall through */
diff --git a/awk.h b/awk.h
index e01726d..5063198 100644
--- a/awk.h
+++ b/awk.h
@@ -1363,6 +1363,7 @@ extern NODE *do_aoption(int nargs);
extern NODE *do_asort(int nargs);
extern NODE *do_asorti(int nargs);
extern unsigned long (*hash)(const char *s, size_t len, unsigned long hsize,
size_t *code);
+extern void init_env_array(NODE *env_node);
/* awkgram.c */
extern NODE *variable(int location, char *name, NODETYPE type);
extern int parse_program(INSTRUCTION **pcode);
diff --git a/doc/ChangeLog b/doc/ChangeLog
index c175416..488620a 100644
--- a/doc/ChangeLog
+++ b/doc/ChangeLog
@@ -1,3 +1,8 @@
+2013-08-15 Arnold D. Robbins <address@hidden>
+
+ * gawk.1: Document that ENVIRON updates affect the environment.
+ * gawktexi.in: Ditto.
+
2013-06-27 Arnold D. Robbins <address@hidden>
* texinfo.tex: Update from Karl, fixes a formating problem.
diff --git a/doc/gawk.1 b/doc/gawk.1
index 7f31c25..8d34302 100644
--- a/doc/gawk.1
+++ b/doc/gawk.1
@@ -13,7 +13,7 @@
. if \w'\(rq' .ds rq "\(rq
. \}
.\}
-.TH GAWK 1 "May 09 2013" "Free Software Foundation" "Utility Commands"
+.TH GAWK 1 "Aug 15 2013" "Free Software Foundation" "Utility Commands"
.SH NAME
gawk \- pattern scanning and processing language
.SH SYNOPSIS
@@ -917,11 +917,17 @@ An array containing the values of the current environment.
The array is indexed by the environment variables, each element being
the value of that variable (e.g., \fBENVIRON["HOME"]\fP might be
\fB"/home/arnold"\fR).
-Changing this array does not affect the environment seen by programs which
+.sp
+In POSIX mode,
+changing this array does not affect the environment seen by programs which
.I gawk
spawns via redirection or the
.B system()
function.
+Otherwise,
+.I gawk
+updates its real environment so that programs it spawns see
+the changes.
.TP
.B ERRNO
If a system error occurs either doing a redirection for
diff --git a/doc/gawk.info b/doc/gawk.info
index 9072bf0..12e0c43 100644
--- a/doc/gawk.info
+++ b/doc/gawk.info
@@ -9679,9 +9679,18 @@ with a pound sign (`#').
An associative array containing the values of the environment.
The array indices are the environment variable names; the elements
are the values of the particular environment variables. For
- example, `ENVIRON["HOME"]' might be `/home/arnold'. Changing this
- array does not affect the environment passed on to any programs
- that `awk' may spawn via redirection or the `system()' function.
+ example, `ENVIRON["HOME"]' might be `/home/arnold'.
+
+ For POSIX `awk', changing this array does not affect the
+ environment passed on to any programs that `awk' may spawn via
+ redirection or the `system()' function.
+
+ However, beginning with version 4.2, if not in POSIX compatibility
+ mode, `gawk' does update its own environment when `ENVIRON' is
+ changed, thus changing the environment seen by programs that it
+ creates. You should therefore be especially careful if you modify
+ `ENVIRON["PATH"]"', which is the search path for finding
+ executable programs.
Some operating systems may not have environment variables. On
such systems, the `ENVIRON' array is empty (except for
@@ -30070,9 +30079,9 @@ Index
* dark corner, exit statement: Exit Statement. (line 30)
* dark corner, field separators: Field Splitting Summary.
(line 46)
-* dark corner, FILENAME variable <1>: Auto-set. (line 93)
+* dark corner, FILENAME variable <1>: Auto-set. (line 102)
* dark corner, FILENAME variable: Getline Notes. (line 19)
-* dark corner, FNR/NR variables: Auto-set. (line 314)
+* dark corner, FNR/NR variables: Auto-set. (line 323)
* dark corner, format-control characters: Control Letters. (line 18)
* dark corner, FS as null string: Single Character Fields.
(line 20)
@@ -30241,12 +30250,12 @@ Index
(line 23)
* differences in awk and gawk, close() function: Close Files And Pipes.
(line 81)
-* differences in awk and gawk, ERRNO variable: Auto-set. (line 73)
+* differences in awk and gawk, ERRNO variable: Auto-set. (line 82)
* differences in awk and gawk, error messages: Special FD. (line 16)
* differences in awk and gawk, FIELDWIDTHS variable: User-modified.
(line 35)
* differences in awk and gawk, FPAT variable: User-modified. (line 45)
-* differences in awk and gawk, FUNCTAB variable: Auto-set. (line 119)
+* differences in awk and gawk, FUNCTAB variable: Auto-set. (line 128)
* differences in awk and gawk, function arguments (gawk): Calling Built-in.
(line 16)
* differences in awk and gawk, getline command: Getline. (line 19)
@@ -30269,14 +30278,14 @@ Index
(line 261)
* differences in awk and gawk, print/printf statements: Format Modifiers.
(line 13)
-* differences in awk and gawk, PROCINFO array: Auto-set. (line 133)
+* differences in awk and gawk, PROCINFO array: Auto-set. (line 142)
* differences in awk and gawk, record separators: Records. (line 117)
* differences in awk and gawk, regexp constants: Using Constant Regexps.
(line 43)
* differences in awk and gawk, regular expressions: Case-sensitivity.
(line 26)
* differences in awk and gawk, RS/RT variables: Records. (line 172)
-* differences in awk and gawk, RT variable: Auto-set. (line 266)
+* differences in awk and gawk, RT variable: Auto-set. (line 275)
* differences in awk and gawk, single-character fields: Single Character
Fields.
(line 6)
* differences in awk and gawk, split() function: String Functions.
@@ -30285,7 +30294,7 @@ Index
* differences in awk and gawk, strings, storing: Records. (line 191)
* differences in awk and gawk, strtonum() function (gawk): String Functions.
(line 406)
-* differences in awk and gawk, SYMTAB variable: Auto-set. (line 274)
+* differences in awk and gawk, SYMTAB variable: Auto-set. (line 283)
* differences in awk and gawk, TEXTDOMAIN variable: User-modified.
(line 162)
* differences in awk and gawk, trunc-mod operation: Arithmetic Ops.
@@ -30366,13 +30375,13 @@ Index
(line 11)
* EREs (Extended Regular Expressions): Bracket Expressions. (line 24)
* ERRNO variable <1>: TCP/IP Networking. (line 54)
-* ERRNO variable <2>: Auto-set. (line 73)
+* ERRNO variable <2>: Auto-set. (line 82)
* ERRNO variable <3>: BEGINFILE/ENDFILE. (line 26)
* ERRNO variable <4>: Close Files And Pipes.
(line 138)
* ERRNO variable: Getline. (line 19)
* error handling: Special FD. (line 16)
-* error handling, ERRNO variable and: Auto-set. (line 73)
+* error handling, ERRNO variable and: Auto-set. (line 82)
* error output: Special FD. (line 6)
* escape processing, gsub()/gensub()/sub() functions: Gory Details.
(line 6)
@@ -30484,7 +30493,7 @@ Index
* file names, distinguishing: Auto-set. (line 52)
* file names, in compatibility mode: Special Caveats. (line 9)
* file names, standard streams in gawk: Special FD. (line 46)
-* FILENAME variable <1>: Auto-set. (line 93)
+* FILENAME variable <1>: Auto-set. (line 102)
* FILENAME variable: Reading Files. (line 6)
* FILENAME variable, getline, setting with: Getline Notes. (line 19)
* filenames, assignments as: Ignoring Assigns. (line 6)
@@ -30551,9 +30560,9 @@ Index
* floating-point, numbers: General Arithmetic. (line 6)
* fnmatch extension function: Extension Sample Fnmatch.
(line 6)
-* FNR variable <1>: Auto-set. (line 103)
+* FNR variable <1>: Auto-set. (line 112)
* FNR variable: Records. (line 6)
-* FNR variable, changing: Auto-set. (line 314)
+* FNR variable, changing: Auto-set. (line 323)
* for statement: For Statement. (line 6)
* for statement, looping over arrays: Scanning an Array. (line 20)
* fork extension function: Extension Sample Fork.
@@ -30600,7 +30609,7 @@ Index
* FSF (Free Software Foundation): Manual History. (line 6)
* fts extension function: Extension Sample File Functions.
(line 77)
-* FUNCTAB array: Auto-set. (line 119)
+* FUNCTAB array: Auto-set. (line 128)
* function calls: Function Calls. (line 6)
* function calls, indirect: Indirect Calls. (line 6)
* function pointers: Indirect Calls. (line 6)
@@ -30669,7 +30678,7 @@ Index
* gawk, distribution: Distribution contents.
(line 6)
* gawk, ERRNO variable in <1>: TCP/IP Networking. (line 54)
-* gawk, ERRNO variable in <2>: Auto-set. (line 73)
+* gawk, ERRNO variable in <2>: Auto-set. (line 82)
* gawk, ERRNO variable in <3>: BEGINFILE/ENDFILE. (line 26)
* gawk, ERRNO variable in <4>: Close Files And Pipes.
(line 138)
@@ -30686,7 +30695,7 @@ Index
* gawk, FPAT variable in <1>: User-modified. (line 45)
* gawk, FPAT variable in: Splitting By Content.
(line 26)
-* gawk, FUNCTAB array in: Auto-set. (line 119)
+* gawk, FUNCTAB array in: Auto-set. (line 128)
* gawk, function arguments and: Calling Built-in. (line 16)
* gawk, hexadecimal numbers and: Nondecimal-numbers. (line 42)
* gawk, IGNORECASE variable in <1>: Array Sorting Functions.
@@ -30717,7 +30726,7 @@ Index
* gawk, OS/2 version of: PC Using. (line 11)
* gawk, PROCINFO array in <1>: Two-way I/O. (line 116)
* gawk, PROCINFO array in <2>: Time Functions. (line 47)
-* gawk, PROCINFO array in: Auto-set. (line 133)
+* gawk, PROCINFO array in: Auto-set. (line 142)
* gawk, regexp constants and: Using Constant Regexps.
(line 28)
* gawk, regular expressions, case sensitivity: Case-sensitivity.
@@ -30725,7 +30734,7 @@ Index
* gawk, regular expressions, operators: GNU Regexp Operators.
(line 6)
* gawk, regular expressions, precedence: Regexp Operators. (line 161)
-* gawk, RT variable in <1>: Auto-set. (line 266)
+* gawk, RT variable in <1>: Auto-set. (line 275)
* gawk, RT variable in <2>: Getline/Variable/File.
(line 10)
* gawk, RT variable in <3>: Multiple Line. (line 129)
@@ -30734,7 +30743,7 @@ Index
* gawk, source code, obtaining: Getting. (line 6)
* gawk, splitting fields and: Constant Size. (line 87)
* gawk, string-translation functions: I18N Functions. (line 6)
-* gawk, SYMTAB array in: Auto-set. (line 274)
+* gawk, SYMTAB array in: Auto-set. (line 283)
* gawk, TEXTDOMAIN variable in: User-modified. (line 162)
* gawk, timestamps: Time Functions. (line 6)
* gawk, uses for: Preface. (line 36)
@@ -31135,16 +31144,16 @@ Index
(line 47)
* nexti debugger command: Debugger Execution Control.
(line 49)
-* NF variable <1>: Auto-set. (line 108)
+* NF variable <1>: Auto-set. (line 117)
* NF variable: Fields. (line 33)
* NF variable, decrementing: Changing Fields. (line 107)
* ni debugger command (alias for nexti): Debugger Execution Control.
(line 49)
* noassign.awk program: Ignoring Assigns. (line 15)
* not Boolean-logic operator: Boolean Ops. (line 6)
-* NR variable <1>: Auto-set. (line 128)
+* NR variable <1>: Auto-set. (line 137)
* NR variable: Records. (line 6)
-* NR variable, changing: Auto-set. (line 314)
+* NR variable, changing: Auto-set. (line 323)
* null strings <1>: Basic Data Typing. (line 26)
* null strings <2>: Truth Values. (line 6)
* null strings <3>: Regexp Field Splitting.
@@ -31424,7 +31433,7 @@ Index
* PROCINFO array <3>: Group Functions. (line 6)
* PROCINFO array <4>: Passwd Functions. (line 6)
* PROCINFO array <5>: Time Functions. (line 47)
-* PROCINFO array <6>: Auto-set. (line 133)
+* PROCINFO array <6>: Auto-set. (line 142)
* PROCINFO array: Obsolete. (line 11)
* profiling awk programs: Profiling. (line 6)
* profiling awk programs, dynamically: Profiling. (line 172)
@@ -31577,7 +31586,7 @@ Index
* right angle bracket (>), >> operator (I/O): Redirection. (line 50)
* right shift, bitwise: Bitwise Functions. (line 32)
* Ritchie, Dennis: Basic Data Typing. (line 55)
-* RLENGTH variable: Auto-set. (line 253)
+* RLENGTH variable: Auto-set. (line 262)
* RLENGTH variable, match() function and: String Functions. (line 225)
* Robbins, Arnold <1>: Future Extensions. (line 6)
* Robbins, Arnold <2>: Bugs. (line 32)
@@ -31604,9 +31613,9 @@ Index
* RS variable: Records. (line 20)
* RS variable, multiline records and: Multiple Line. (line 17)
* rshift() function (gawk): Bitwise Functions. (line 52)
-* RSTART variable: Auto-set. (line 259)
+* RSTART variable: Auto-set. (line 268)
* RSTART variable, match() function and: String Functions. (line 225)
-* RT variable <1>: Auto-set. (line 266)
+* RT variable <1>: Auto-set. (line 275)
* RT variable <2>: Getline/Variable/File.
(line 10)
* RT variable <3>: Multiple Line. (line 129)
@@ -31689,7 +31698,7 @@ Index
(line 110)
* sidebar, Changing FS Does Not Affect the Fields: Field Splitting Summary.
(line 38)
-* sidebar, Changing NR and FNR: Auto-set. (line 312)
+* sidebar, Changing NR and FNR: Auto-set. (line 321)
* sidebar, Controlling Output Buffering with system(): I/O Functions.
(line 135)
* sidebar, Escape Sequences for Metacharacters: Escape Sequences.
@@ -31831,7 +31840,7 @@ Index
* substr() function: String Functions. (line 483)
* Sumner, Andrew: Other Versions. (line 64)
* switch statement: Switch Statement. (line 6)
-* SYMTAB array: Auto-set. (line 274)
+* SYMTAB array: Auto-set. (line 283)
* syntactic ambiguity: /= operator vs. /=.../ regexp constant: Assignment Ops.
(line 147)
* system() function: I/O Functions. (line 72)
@@ -32272,335 +32281,335 @@ Node: Built-in Variables402949
Node: User-modified404044
Ref: User-modified-Footnote-1412404
Node: Auto-set412466
-Ref: Auto-set-Footnote-1425544
-Ref: Auto-set-Footnote-2425749
-Node: ARGC and ARGV425805
-Node: Arrays429656
-Node: Array Basics431161
-Node: Array Intro431987
-Node: Reference to Elements436305
-Node: Assigning Elements438575
-Node: Array Example439066
-Node: Scanning an Array440798
-Node: Controlling Scanning443112
-Ref: Controlling Scanning-Footnote-1448035
-Node: Delete448351
-Ref: Delete-Footnote-1451116
-Node: Numeric Array Subscripts451173
-Node: Uninitialized Subscripts453356
-Node: Multi-dimensional454984
-Node: Multi-scanning458078
-Node: Arrays of Arrays459669
-Node: Functions464310
-Node: Built-in465129
-Node: Calling Built-in466207
-Node: Numeric Functions468195
-Ref: Numeric Functions-Footnote-1472027
-Ref: Numeric Functions-Footnote-2472384
-Ref: Numeric Functions-Footnote-3472432
-Node: String Functions472701
-Ref: String Functions-Footnote-1496259
-Ref: String Functions-Footnote-2496388
-Ref: String Functions-Footnote-3496636
-Node: Gory Details496723
-Ref: table-sub-escapes498402
-Ref: table-sub-posix-92499756
-Ref: table-sub-proposed501107
-Ref: table-posix-sub502461
-Ref: table-gensub-escapes504006
-Ref: Gory Details-Footnote-1505182
-Ref: Gory Details-Footnote-2505233
-Node: I/O Functions505384
-Ref: I/O Functions-Footnote-1512369
-Node: Time Functions512516
-Ref: Time Functions-Footnote-1523449
-Ref: Time Functions-Footnote-2523517
-Ref: Time Functions-Footnote-3523675
-Ref: Time Functions-Footnote-4523786
-Ref: Time Functions-Footnote-5523898
-Ref: Time Functions-Footnote-6524125
-Node: Bitwise Functions524391
-Ref: table-bitwise-ops524949
-Ref: Bitwise Functions-Footnote-1529170
-Node: Type Functions529354
-Node: I18N Functions530505
-Node: User-defined532132
-Node: Definition Syntax532936
-Ref: Definition Syntax-Footnote-1537846
-Node: Function Example537915
-Node: Function Caveats540509
-Node: Calling A Function540930
-Node: Variable Scope542045
-Node: Pass By Value/Reference545008
-Node: Return Statement548516
-Node: Dynamic Typing551497
-Node: Indirect Calls552428
-Node: Library Functions562113
-Ref: Library Functions-Footnote-1565626
-Ref: Library Functions-Footnote-2565769
-Node: Library Names565940
-Ref: Library Names-Footnote-1569411
-Ref: Library Names-Footnote-2569631
-Node: General Functions569717
-Node: Strtonum Function570670
-Node: Assert Function573600
-Node: Round Function576926
-Node: Cliff Random Function578469
-Node: Ordinal Functions579485
-Ref: Ordinal Functions-Footnote-1582555
-Ref: Ordinal Functions-Footnote-2582807
-Node: Join Function583016
-Ref: Join Function-Footnote-1584787
-Node: Getlocaltime Function584987
-Node: Data File Management588702
-Node: Filetrans Function589334
-Node: Rewind Function593403
-Node: File Checking594790
-Node: Empty Files595884
-Node: Ignoring Assigns598114
-Node: Getopt Function599667
-Ref: Getopt Function-Footnote-1610971
-Node: Passwd Functions611174
-Ref: Passwd Functions-Footnote-1620149
-Node: Group Functions620237
-Node: Walking Arrays628321
-Node: Sample Programs630458
-Node: Running Examples631132
-Node: Clones631860
-Node: Cut Program633084
-Node: Egrep Program642929
-Ref: Egrep Program-Footnote-1650702
-Node: Id Program650812
-Node: Split Program654428
-Ref: Split Program-Footnote-1657947
-Node: Tee Program658075
-Node: Uniq Program660878
-Node: Wc Program668307
-Ref: Wc Program-Footnote-1672573
-Ref: Wc Program-Footnote-2672773
-Node: Miscellaneous Programs672865
-Node: Dupword Program674053
-Node: Alarm Program676084
-Node: Translate Program680833
-Ref: Translate Program-Footnote-1685220
-Ref: Translate Program-Footnote-2685448
-Node: Labels Program685582
-Ref: Labels Program-Footnote-1688953
-Node: Word Sorting689037
-Node: History Sorting692921
-Node: Extract Program694760
-Ref: Extract Program-Footnote-1702261
-Node: Simple Sed702389
-Node: Igawk Program705451
-Ref: Igawk Program-Footnote-1720608
-Ref: Igawk Program-Footnote-2720809
-Node: Anagram Program720947
-Node: Signature Program724015
-Node: Advanced Features725115
-Node: Nondecimal Data726997
-Node: Array Sorting728580
-Node: Controlling Array Traversal729277
-Node: Array Sorting Functions737515
-Ref: Array Sorting Functions-Footnote-1741189
-Ref: Array Sorting Functions-Footnote-2741282
-Node: Two-way I/O741476
-Ref: Two-way I/O-Footnote-1746908
-Node: TCP/IP Networking746978
-Node: Profiling749822
-Node: Internationalization757319
-Node: I18N and L10N758744
-Node: Explaining gettext759430
-Ref: Explaining gettext-Footnote-1764498
-Ref: Explaining gettext-Footnote-2764682
-Node: Programmer i18n764847
-Node: Translator i18n769049
-Node: String Extraction769842
-Ref: String Extraction-Footnote-1770803
-Node: Printf Ordering770889
-Ref: Printf Ordering-Footnote-1773673
-Node: I18N Portability773737
-Ref: I18N Portability-Footnote-1776186
-Node: I18N Example776249
-Ref: I18N Example-Footnote-1778887
-Node: Gawk I18N778959
-Node: Debugger779580
-Node: Debugging780551
-Node: Debugging Concepts780984
-Node: Debugging Terms782840
-Node: Awk Debugging785437
-Node: Sample Debugging Session786329
-Node: Debugger Invocation786849
-Node: Finding The Bug788181
-Node: List of Debugger Commands794669
-Node: Breakpoint Control796003
-Node: Debugger Execution Control799667
-Node: Viewing And Changing Data803027
-Node: Execution Stack806383
-Node: Debugger Info807850
-Node: Miscellaneous Debugger Commands811832
-Node: Readline Support817008
-Node: Limitations817839
-Node: Arbitrary Precision Arithmetic820091
-Ref: Arbitrary Precision Arithmetic-Footnote-1821742
-Node: General Arithmetic821890
-Node: Floating Point Issues823610
-Node: String Conversion Precision824491
-Ref: String Conversion Precision-Footnote-1826197
-Node: Unexpected Results826306
-Node: POSIX Floating Point Problems828459
-Ref: POSIX Floating Point Problems-Footnote-1832284
-Node: Integer Programming832322
-Node: Floating-point Programming834061
-Ref: Floating-point Programming-Footnote-1840392
-Ref: Floating-point Programming-Footnote-2840662
-Node: Floating-point Representation840926
-Node: Floating-point Context842091
-Ref: table-ieee-formats842930
-Node: Rounding Mode844314
-Ref: table-rounding-modes844793
-Ref: Rounding Mode-Footnote-1847808
-Node: Gawk and MPFR847987
-Node: Arbitrary Precision Floats849242
-Ref: Arbitrary Precision Floats-Footnote-1851685
-Node: Setting Precision852001
-Ref: table-predefined-precision-strings852687
-Node: Setting Rounding Mode854832
-Ref: table-gawk-rounding-modes855236
-Node: Floating-point Constants856423
-Node: Changing Precision857852
-Ref: Changing Precision-Footnote-1859252
-Node: Exact Arithmetic859426
-Node: Arbitrary Precision Integers862564
-Ref: Arbitrary Precision Integers-Footnote-1865582
-Node: Dynamic Extensions865729
-Node: Extension Intro867187
-Node: Plugin License868452
-Node: Extension Mechanism Outline869137
-Ref: load-extension869554
-Ref: load-new-function871032
-Ref: call-new-function872027
-Node: Extension API Description874042
-Node: Extension API Functions Introduction875255
-Node: General Data Types880121
-Ref: General Data Types-Footnote-1885723
-Node: Requesting Values886022
-Ref: table-value-types-returned886753
-Node: Constructor Functions887707
-Node: Registration Functions890727
-Node: Extension Functions891412
-Node: Exit Callback Functions893637
-Node: Extension Version String894886
-Node: Input Parsers895536
-Node: Output Wrappers905293
-Node: Two-way processors909803
-Node: Printing Messages912011
-Ref: Printing Messages-Footnote-1913088
-Node: Updating `ERRNO'913240
-Node: Accessing Parameters913979
-Node: Symbol Table Access915209
-Node: Symbol table by name915721
-Node: Symbol table by cookie917468
-Ref: Symbol table by cookie-Footnote-1921598
-Node: Cached values921661
-Ref: Cached values-Footnote-1925110
-Node: Array Manipulation925201
-Ref: Array Manipulation-Footnote-1926299
-Node: Array Data Types926338
-Ref: Array Data Types-Footnote-1929041
-Node: Array Functions929133
-Node: Flattening Arrays932899
-Node: Creating Arrays939751
-Node: Extension API Variables944476
-Node: Extension Versioning945112
-Node: Extension API Informational Variables947013
-Node: Extension API Boilerplate948099
-Node: Finding Extensions951903
-Node: Extension Example952463
-Node: Internal File Description953194
-Node: Internal File Ops957285
-Ref: Internal File Ops-Footnote-1968793
-Node: Using Internal File Ops968933
-Ref: Using Internal File Ops-Footnote-1971286
-Node: Extension Samples971552
-Node: Extension Sample File Functions973076
-Node: Extension Sample Fnmatch981563
-Node: Extension Sample Fork983289
-Node: Extension Sample Inplace984507
-Node: Extension Sample Ord986285
-Node: Extension Sample Readdir987121
-Node: Extension Sample Revout988653
-Node: Extension Sample Rev2way989246
-Node: Extension Sample Read write array989936
-Node: Extension Sample Readfile991819
-Node: Extension Sample API Tests992637
-Node: Extension Sample Time993162
-Node: gawkextlib994526
-Node: Language History997286
-Node: V7/SVR3.1998808
-Node: SVR41001129
-Node: POSIX1002571
-Node: BTL1003957
-Node: POSIX/GNU1004691
-Node: Common Extensions1010226
-Node: Ranges and Locales1011532
-Ref: Ranges and Locales-Footnote-11016150
-Ref: Ranges and Locales-Footnote-21016177
-Ref: Ranges and Locales-Footnote-31016437
-Node: Contributors1016658
-Node: Installation1021537
-Node: Gawk Distribution1022431
-Node: Getting1022915
-Node: Extracting1023741
-Node: Distribution contents1025433
-Node: Unix Installation1030694
-Node: Quick Installation1031311
-Node: Additional Configuration Options1033755
-Node: Configuration Philosophy1035232
-Node: Non-Unix Installation1037586
-Node: PC Installation1038044
-Node: PC Binary Installation1039343
-Node: PC Compiling1041191
-Node: PC Testing1044135
-Node: PC Using1045311
-Node: Cygwin1049496
-Node: MSYS1050496
-Node: VMS Installation1051010
-Node: VMS Compilation1051613
-Ref: VMS Compilation-Footnote-11052620
-Node: VMS Installation Details1052678
-Node: VMS Running1054313
-Node: VMS Old Gawk1055920
-Node: Bugs1056394
-Node: Other Versions1060246
-Node: Notes1065847
-Node: Compatibility Mode1066647
-Node: Additions1067430
-Node: Accessing The Source1068357
-Node: Adding Code1069797
-Node: New Ports1075842
-Node: Derived Files1079977
-Ref: Derived Files-Footnote-11085298
-Ref: Derived Files-Footnote-21085332
-Ref: Derived Files-Footnote-31085932
-Node: Future Extensions1086030
-Node: Implementation Limitations1086611
-Node: Extension Design1087863
-Node: Old Extension Problems1089017
-Ref: Old Extension Problems-Footnote-11090525
-Node: Extension New Mechanism Goals1090582
-Ref: Extension New Mechanism Goals-Footnote-11093948
-Node: Extension Other Design Decisions1094134
-Node: Extension Future Growth1096240
-Node: Old Extension Mechanism1097076
-Node: Basic Concepts1098816
-Node: Basic High Level1099497
-Ref: figure-general-flow1099768
-Ref: figure-process-flow1100367
-Ref: Basic High Level-Footnote-11103596
-Node: Basic Data Typing1103781
-Node: Glossary1107136
-Node: Copying1132598
-Node: GNU Free Documentation License1170155
-Node: Index1195292
+Ref: Auto-set-Footnote-1425936
+Ref: Auto-set-Footnote-2426141
+Node: ARGC and ARGV426197
+Node: Arrays430048
+Node: Array Basics431553
+Node: Array Intro432379
+Node: Reference to Elements436697
+Node: Assigning Elements438967
+Node: Array Example439458
+Node: Scanning an Array441190
+Node: Controlling Scanning443504
+Ref: Controlling Scanning-Footnote-1448427
+Node: Delete448743
+Ref: Delete-Footnote-1451508
+Node: Numeric Array Subscripts451565
+Node: Uninitialized Subscripts453748
+Node: Multi-dimensional455376
+Node: Multi-scanning458470
+Node: Arrays of Arrays460061
+Node: Functions464702
+Node: Built-in465521
+Node: Calling Built-in466599
+Node: Numeric Functions468587
+Ref: Numeric Functions-Footnote-1472419
+Ref: Numeric Functions-Footnote-2472776
+Ref: Numeric Functions-Footnote-3472824
+Node: String Functions473093
+Ref: String Functions-Footnote-1496651
+Ref: String Functions-Footnote-2496780
+Ref: String Functions-Footnote-3497028
+Node: Gory Details497115
+Ref: table-sub-escapes498794
+Ref: table-sub-posix-92500148
+Ref: table-sub-proposed501499
+Ref: table-posix-sub502853
+Ref: table-gensub-escapes504398
+Ref: Gory Details-Footnote-1505574
+Ref: Gory Details-Footnote-2505625
+Node: I/O Functions505776
+Ref: I/O Functions-Footnote-1512761
+Node: Time Functions512908
+Ref: Time Functions-Footnote-1523841
+Ref: Time Functions-Footnote-2523909
+Ref: Time Functions-Footnote-3524067
+Ref: Time Functions-Footnote-4524178
+Ref: Time Functions-Footnote-5524290
+Ref: Time Functions-Footnote-6524517
+Node: Bitwise Functions524783
+Ref: table-bitwise-ops525341
+Ref: Bitwise Functions-Footnote-1529562
+Node: Type Functions529746
+Node: I18N Functions530897
+Node: User-defined532524
+Node: Definition Syntax533328
+Ref: Definition Syntax-Footnote-1538238
+Node: Function Example538307
+Node: Function Caveats540901
+Node: Calling A Function541322
+Node: Variable Scope542437
+Node: Pass By Value/Reference545400
+Node: Return Statement548908
+Node: Dynamic Typing551889
+Node: Indirect Calls552820
+Node: Library Functions562505
+Ref: Library Functions-Footnote-1566018
+Ref: Library Functions-Footnote-2566161
+Node: Library Names566332
+Ref: Library Names-Footnote-1569803
+Ref: Library Names-Footnote-2570023
+Node: General Functions570109
+Node: Strtonum Function571062
+Node: Assert Function573992
+Node: Round Function577318
+Node: Cliff Random Function578861
+Node: Ordinal Functions579877
+Ref: Ordinal Functions-Footnote-1582947
+Ref: Ordinal Functions-Footnote-2583199
+Node: Join Function583408
+Ref: Join Function-Footnote-1585179
+Node: Getlocaltime Function585379
+Node: Data File Management589094
+Node: Filetrans Function589726
+Node: Rewind Function593795
+Node: File Checking595182
+Node: Empty Files596276
+Node: Ignoring Assigns598506
+Node: Getopt Function600059
+Ref: Getopt Function-Footnote-1611363
+Node: Passwd Functions611566
+Ref: Passwd Functions-Footnote-1620541
+Node: Group Functions620629
+Node: Walking Arrays628713
+Node: Sample Programs630850
+Node: Running Examples631524
+Node: Clones632252
+Node: Cut Program633476
+Node: Egrep Program643321
+Ref: Egrep Program-Footnote-1651094
+Node: Id Program651204
+Node: Split Program654820
+Ref: Split Program-Footnote-1658339
+Node: Tee Program658467
+Node: Uniq Program661270
+Node: Wc Program668699
+Ref: Wc Program-Footnote-1672965
+Ref: Wc Program-Footnote-2673165
+Node: Miscellaneous Programs673257
+Node: Dupword Program674445
+Node: Alarm Program676476
+Node: Translate Program681225
+Ref: Translate Program-Footnote-1685612
+Ref: Translate Program-Footnote-2685840
+Node: Labels Program685974
+Ref: Labels Program-Footnote-1689345
+Node: Word Sorting689429
+Node: History Sorting693313
+Node: Extract Program695152
+Ref: Extract Program-Footnote-1702653
+Node: Simple Sed702781
+Node: Igawk Program705843
+Ref: Igawk Program-Footnote-1721000
+Ref: Igawk Program-Footnote-2721201
+Node: Anagram Program721339
+Node: Signature Program724407
+Node: Advanced Features725507
+Node: Nondecimal Data727389
+Node: Array Sorting728972
+Node: Controlling Array Traversal729669
+Node: Array Sorting Functions737907
+Ref: Array Sorting Functions-Footnote-1741581
+Ref: Array Sorting Functions-Footnote-2741674
+Node: Two-way I/O741868
+Ref: Two-way I/O-Footnote-1747300
+Node: TCP/IP Networking747370
+Node: Profiling750214
+Node: Internationalization757711
+Node: I18N and L10N759136
+Node: Explaining gettext759822
+Ref: Explaining gettext-Footnote-1764890
+Ref: Explaining gettext-Footnote-2765074
+Node: Programmer i18n765239
+Node: Translator i18n769441
+Node: String Extraction770234
+Ref: String Extraction-Footnote-1771195
+Node: Printf Ordering771281
+Ref: Printf Ordering-Footnote-1774065
+Node: I18N Portability774129
+Ref: I18N Portability-Footnote-1776578
+Node: I18N Example776641
+Ref: I18N Example-Footnote-1779279
+Node: Gawk I18N779351
+Node: Debugger779972
+Node: Debugging780943
+Node: Debugging Concepts781376
+Node: Debugging Terms783232
+Node: Awk Debugging785829
+Node: Sample Debugging Session786721
+Node: Debugger Invocation787241
+Node: Finding The Bug788573
+Node: List of Debugger Commands795061
+Node: Breakpoint Control796395
+Node: Debugger Execution Control800059
+Node: Viewing And Changing Data803419
+Node: Execution Stack806775
+Node: Debugger Info808242
+Node: Miscellaneous Debugger Commands812224
+Node: Readline Support817400
+Node: Limitations818231
+Node: Arbitrary Precision Arithmetic820483
+Ref: Arbitrary Precision Arithmetic-Footnote-1822134
+Node: General Arithmetic822282
+Node: Floating Point Issues824002
+Node: String Conversion Precision824883
+Ref: String Conversion Precision-Footnote-1826589
+Node: Unexpected Results826698
+Node: POSIX Floating Point Problems828851
+Ref: POSIX Floating Point Problems-Footnote-1832676
+Node: Integer Programming832714
+Node: Floating-point Programming834453
+Ref: Floating-point Programming-Footnote-1840784
+Ref: Floating-point Programming-Footnote-2841054
+Node: Floating-point Representation841318
+Node: Floating-point Context842483
+Ref: table-ieee-formats843322
+Node: Rounding Mode844706
+Ref: table-rounding-modes845185
+Ref: Rounding Mode-Footnote-1848200
+Node: Gawk and MPFR848379
+Node: Arbitrary Precision Floats849634
+Ref: Arbitrary Precision Floats-Footnote-1852077
+Node: Setting Precision852393
+Ref: table-predefined-precision-strings853079
+Node: Setting Rounding Mode855224
+Ref: table-gawk-rounding-modes855628
+Node: Floating-point Constants856815
+Node: Changing Precision858244
+Ref: Changing Precision-Footnote-1859644
+Node: Exact Arithmetic859818
+Node: Arbitrary Precision Integers862956
+Ref: Arbitrary Precision Integers-Footnote-1865974
+Node: Dynamic Extensions866121
+Node: Extension Intro867579
+Node: Plugin License868844
+Node: Extension Mechanism Outline869529
+Ref: load-extension869946
+Ref: load-new-function871424
+Ref: call-new-function872419
+Node: Extension API Description874434
+Node: Extension API Functions Introduction875647
+Node: General Data Types880513
+Ref: General Data Types-Footnote-1886115
+Node: Requesting Values886414
+Ref: table-value-types-returned887145
+Node: Constructor Functions888099
+Node: Registration Functions891119
+Node: Extension Functions891804
+Node: Exit Callback Functions894029
+Node: Extension Version String895278
+Node: Input Parsers895928
+Node: Output Wrappers905685
+Node: Two-way processors910195
+Node: Printing Messages912403
+Ref: Printing Messages-Footnote-1913480
+Node: Updating `ERRNO'913632
+Node: Accessing Parameters914371
+Node: Symbol Table Access915601
+Node: Symbol table by name916113
+Node: Symbol table by cookie917860
+Ref: Symbol table by cookie-Footnote-1921990
+Node: Cached values922053
+Ref: Cached values-Footnote-1925502
+Node: Array Manipulation925593
+Ref: Array Manipulation-Footnote-1926691
+Node: Array Data Types926730
+Ref: Array Data Types-Footnote-1929433
+Node: Array Functions929525
+Node: Flattening Arrays933291
+Node: Creating Arrays940143
+Node: Extension API Variables944868
+Node: Extension Versioning945504
+Node: Extension API Informational Variables947405
+Node: Extension API Boilerplate948491
+Node: Finding Extensions952295
+Node: Extension Example952855
+Node: Internal File Description953586
+Node: Internal File Ops957677
+Ref: Internal File Ops-Footnote-1969185
+Node: Using Internal File Ops969325
+Ref: Using Internal File Ops-Footnote-1971678
+Node: Extension Samples971944
+Node: Extension Sample File Functions973468
+Node: Extension Sample Fnmatch981955
+Node: Extension Sample Fork983681
+Node: Extension Sample Inplace984899
+Node: Extension Sample Ord986677
+Node: Extension Sample Readdir987513
+Node: Extension Sample Revout989045
+Node: Extension Sample Rev2way989638
+Node: Extension Sample Read write array990328
+Node: Extension Sample Readfile992211
+Node: Extension Sample API Tests993029
+Node: Extension Sample Time993554
+Node: gawkextlib994918
+Node: Language History997678
+Node: V7/SVR3.1999200
+Node: SVR41001521
+Node: POSIX1002963
+Node: BTL1004349
+Node: POSIX/GNU1005083
+Node: Common Extensions1010618
+Node: Ranges and Locales1011924
+Ref: Ranges and Locales-Footnote-11016542
+Ref: Ranges and Locales-Footnote-21016569
+Ref: Ranges and Locales-Footnote-31016829
+Node: Contributors1017050
+Node: Installation1021929
+Node: Gawk Distribution1022823
+Node: Getting1023307
+Node: Extracting1024133
+Node: Distribution contents1025825
+Node: Unix Installation1031086
+Node: Quick Installation1031703
+Node: Additional Configuration Options1034147
+Node: Configuration Philosophy1035624
+Node: Non-Unix Installation1037978
+Node: PC Installation1038436
+Node: PC Binary Installation1039735
+Node: PC Compiling1041583
+Node: PC Testing1044527
+Node: PC Using1045703
+Node: Cygwin1049888
+Node: MSYS1050888
+Node: VMS Installation1051402
+Node: VMS Compilation1052005
+Ref: VMS Compilation-Footnote-11053012
+Node: VMS Installation Details1053070
+Node: VMS Running1054705
+Node: VMS Old Gawk1056312
+Node: Bugs1056786
+Node: Other Versions1060638
+Node: Notes1066239
+Node: Compatibility Mode1067039
+Node: Additions1067822
+Node: Accessing The Source1068749
+Node: Adding Code1070189
+Node: New Ports1076234
+Node: Derived Files1080369
+Ref: Derived Files-Footnote-11085690
+Ref: Derived Files-Footnote-21085724
+Ref: Derived Files-Footnote-31086324
+Node: Future Extensions1086422
+Node: Implementation Limitations1087003
+Node: Extension Design1088255
+Node: Old Extension Problems1089409
+Ref: Old Extension Problems-Footnote-11090917
+Node: Extension New Mechanism Goals1090974
+Ref: Extension New Mechanism Goals-Footnote-11094340
+Node: Extension Other Design Decisions1094526
+Node: Extension Future Growth1096632
+Node: Old Extension Mechanism1097468
+Node: Basic Concepts1099208
+Node: Basic High Level1099889
+Ref: figure-general-flow1100160
+Ref: figure-process-flow1100759
+Ref: Basic High Level-Footnote-11103988
+Node: Basic Data Typing1104173
+Node: Glossary1107528
+Node: Copying1132990
+Node: GNU Free Documentation License1170547
+Node: Index1195684
End Tag Table
diff --git a/doc/gawk.texi b/doc/gawk.texi
index fa3e587..10fffd0 100644
--- a/doc/gawk.texi
+++ b/doc/gawk.texi
@@ -13652,10 +13652,18 @@ it is not special.
An associative array containing the values of the environment. The array
indices are the environment variable names; the elements are the values of
the particular environment variables. For example,
address@hidden"HOME"]} might be @file{/home/arnold}. Changing this array
-does not affect the environment passed on to any programs that
address@hidden may spawn via redirection or the @code{system()} function.
address@hidden (In a future version of @command{gawk}, it may do so.)
address@hidden"HOME"]} might be @file{/home/arnold}.
+
+For POSIX @command{awk}, changing this array does not affect the
+environment passed on to any programs that @command{awk} may spawn via
+redirection or the @code{system()} function.
+
+However, beginning with @value{PVERSION} 4.2, if not in POSIX
+compatibility mode, @command{gawk} does update its own environment when
address@hidden is changed, thus changing the environment seen by programs
+that it creates. You should therefore be especially careful if you
+modify @code{ENVIRON["PATH"]"}, which is the search path for finding
+executable programs.
Some operating systems may not have environment variables.
On such systems, the @code{ENVIRON} array is empty (except for
diff --git a/doc/gawktexi.in b/doc/gawktexi.in
index 59ee1a6..1a696f9 100644
--- a/doc/gawktexi.in
+++ b/doc/gawktexi.in
@@ -13037,10 +13037,18 @@ it is not special.
An associative array containing the values of the environment. The array
indices are the environment variable names; the elements are the values of
the particular environment variables. For example,
address@hidden"HOME"]} might be @file{/home/arnold}. Changing this array
-does not affect the environment passed on to any programs that
address@hidden may spawn via redirection or the @code{system()} function.
address@hidden (In a future version of @command{gawk}, it may do so.)
address@hidden"HOME"]} might be @file{/home/arnold}.
+
+For POSIX @command{awk}, changing this array does not affect the
+environment passed on to any programs that @command{awk} may spawn via
+redirection or the @code{system()} function.
+
+However, beginning with @value{PVERSION} 4.2, if not in POSIX
+compatibility mode, @command{gawk} does update its own environment when
address@hidden is changed, thus changing the environment seen by programs
+that it creates. You should therefore be especially careful if you
+modify @code{ENVIRON["PATH"]"}, which is the search path for finding
+executable programs.
Some operating systems may not have environment variables.
On such systems, the @code{ENVIRON} array is empty (except for
diff --git a/main.c b/main.c
index 7438ee3..76fd565 100644
--- a/main.c
+++ b/main.c
@@ -1096,6 +1096,10 @@ load_environ()
*/
path_environ("AWKPATH", defpath);
path_environ("AWKLIBPATH", deflibpath);
+
+ /* set up array functions */
+ init_env_array(ENVIRON_node);
+
return ENVIRON_node;
}
diff --git a/str_array.c b/str_array.c
index aa82d71..e4352a9 100644
--- a/str_array.c
+++ b/str_array.c
@@ -69,6 +69,25 @@ afunc_t str_array_func[] = {
(afunc_t) 0,
};
+static NODE **env_remove(NODE *symbol, NODE *subs);
+static NODE **env_store(NODE *symbol, NODE *subs);
+static NODE **env_clear(NODE *symbol, NODE *subs);
+
+/* special case for ENVIRON */
+afunc_t env_array_func[] = {
+ str_array_init,
+ (afunc_t) 0,
+ null_length,
+ str_lookup,
+ str_exists,
+ env_clear,
+ env_remove,
+ str_list,
+ str_copy,
+ str_dump,
+ env_store,
+};
+
static inline NODE **str_find(NODE *symbol, NODE *s1, size_t code1, unsigned
long hash1);
static void grow_table(NODE *symbol);
@@ -737,3 +756,58 @@ scramble(unsigned long x)
return x;
}
+
+/* env_remove --- for ENVIRON, remove value from real environment */
+
+static NODE **
+env_remove(NODE *symbol, NODE *subs)
+{
+ NODE **val = str_remove(symbol, subs);
+
+ if (val != NULL)
+ (void) unsetenv(subs->stptr);
+
+ return val;
+}
+
+/* env_clear --- clear out the environment when ENVIRON is deleted */
+
+static NODE **
+env_clear(NODE *symbol, NODE *subs)
+{
+ extern char **environ;
+ NODE **val = str_clear(symbol, subs);
+
+ environ = NULL; /* ZAP! */
+
+ /* str_clear zaps the vtable, reset it */
+ symbol->array_funcs = env_array_func;
+
+ return val;
+}
+
+/* env_store --- post assign function for ENVIRON, put new value into env */
+
+static NODE **
+env_store(NODE *symbol, NODE *subs)
+{
+ NODE **val = str_exists(symbol, subs);
+
+ assert(val != NULL);
+
+ (void) setenv(subs->stptr, (*val)->stptr, 1);
+
+ return val;
+}
+
+/* init_env_array --- set up the pointers for ENVIRON. A bit hacky. */
+
+void
+init_env_array(NODE *env_node)
+{
+ /* If POSIX simply don't reset the vtable and things work as before */
+ if (do_posix)
+ return;
+
+ env_node->array_funcs = env_array_func;
+}
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 10 +
NEWS | 7 +
TODO | 3 -
array.c | 16 +-
awk.h | 1 +
doc/ChangeLog | 5 +
doc/gawk.1 | 10 +-
doc/gawk.info | 729 ++++++++++++++++++++++++++++---------------------------
doc/gawk.texi | 16 +-
doc/gawktexi.in | 16 +-
main.c | 4 +
str_array.c | 74 ++++++
12 files changed, 507 insertions(+), 384 deletions(-)
hooks/post-receive
--
gawk
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- [gawk-diffs] [SCM] gawk branch, master, updated. gawk-4.1.0-79-g7d19cbd,
Arnold Robbins <=