diff options
Diffstat (limited to 'doc')
-rw-r--r-- | doc/ChangeLog | 7 | ||||
-rw-r--r-- | doc/gawk.1 | 8 | ||||
-rw-r--r-- | doc/gawk.info | 775 | ||||
-rw-r--r-- | doc/gawk.texi | 26 | ||||
-rw-r--r-- | doc/gawktexi.in | 26 |
5 files changed, 441 insertions, 401 deletions
diff --git a/doc/ChangeLog b/doc/ChangeLog index c8781f4e..8d6166a8 100644 --- a/doc/ChangeLog +++ b/doc/ChangeLog @@ -118,7 +118,7 @@ 2013-12-26 Arnold D. Robbins <arnold@skeeve.com> * gawktexi.in: More minor additions / fixes. - (Bugs): Add John Malmberg for VMS. + (Bugs): Add John Malmberg for VMS. Other minor edits. 2013-12-25 Arnold D. Robbins <arnold@skeeve.com> @@ -192,6 +192,11 @@ * gawktexi.in (FN, FFN, DF,DDF, PVERSION, CTL): Remove macros. They have no alternate versions and are just in the way. +2013-08-15 Arnold D. Robbins <arnold@skeeve.com> + + * gawk.1: Document that ENVIRON updates affect the environment. + * gawktexi.in: Ditto. + 2013-06-27 Arnold D. Robbins <arnold@skeeve.com> * texinfo.tex: Update from Karl, fixes a formating problem. @@ -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 6bff2719..4c1d5972 100644 --- a/doc/gawk.info +++ b/doc/gawk.info @@ -9732,9 +9732,18 @@ 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 @@ -30889,9 +30898,9 @@ 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) @@ -31074,12 +31083,12 @@ Index (line 81) * differences in awk and gawk, command line directories: Command line directories. (line 6) -* 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) @@ -31102,21 +31111,21 @@ Index (line 257) * 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 132) * 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 187) -* 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. (line 347) * differences in awk and gawk, strings: Scalar Constants. (line 20) * differences in awk and gawk, strings, storing: Records. (line 206) -* 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. @@ -31157,8 +31166,8 @@ Index * dynamically loaded extensions: Dynamic Extensions. (line 6) * e debugger command (alias for enable): Breakpoint Control. (line 73) * EBCDIC: Ordinal Functions. (line 45) -* effective group id of gawk user: Auto-set. (line 138) -* effective user id of gawk user: Auto-set. (line 142) +* effective group id of gawk user: Auto-set. (line 147) +* effective user id of gawk user: Auto-set. (line 151) * egrep utility <1>: Egrep Program. (line 6) * egrep utility: Bracket Expressions. (line 24) * egrep.awk program: Egrep Program. (line 54) @@ -31213,13 +31222,13 @@ Index (line 11) * EREs (Extended Regular Expressions): Bracket Expressions. (line 24) * ERRNO variable <1>: TCP/IP Networking. (line 54) -* ERRNO variable: Auto-set. (line 73) +* ERRNO variable: Auto-set. (line 82) * ERRNO variable, with BEGINFILE pattern: BEGINFILE/ENDFILE. (line 26) * ERRNO variable, with close() function: Close Files And Pipes. (line 138) * ERRNO variable, with getline command: 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) @@ -31273,7 +31282,7 @@ Index (line 6) * extension API version: Extension Versioning. (line 6) -* extension API, version number: Auto-set. (line 229) +* extension API, version number: Auto-set. (line 238) * extension example: Extension Example. (line 6) * extension registration: Registration Functions. (line 6) @@ -31353,7 +31362,7 @@ 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) @@ -31423,9 +31432,9 @@ Index * flush buffered output: I/O Functions. (line 25) * fnmatch() extension function: Extension Sample Fnmatch. (line 12) -* 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. @@ -31475,7 +31484,7 @@ 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 definition example: Function Example. (line 6) @@ -31525,7 +31534,7 @@ Index * G-d: Acknowledgments. (line 78) * Garfinkle, Scott: Contributors. (line 34) * gawk program, dynamic profiling: Profiling. (line 179) -* gawk version: Auto-set. (line 204) +* gawk version: Auto-set. (line 213) * gawk, ARGIND variable in: Other Arguments. (line 12) * gawk, awk and <1>: This Manual. (line 14) * gawk, awk and: Preface. (line 23) @@ -31546,7 +31555,7 @@ 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) @@ -31563,7 +31572,7 @@ Index * gawk, FPAT variable in <1>: User-modified. (line 45) * gawk, FPAT variable in: Splitting By Content. (line 27) -* 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. @@ -31594,7 +31603,7 @@ Index * gawk, OS/2 version of: PC Using. (line 10) * 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. @@ -31602,14 +31611,14 @@ 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>: Multiple Line. (line 129) * gawk, RT variable in: Records. (line 132) * gawk, See Also awk: Preface. (line 36) * gawk, source code, obtaining: Getting. (line 6) * gawk, splitting fields and: Constant Size. (line 88) * 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) @@ -31696,7 +31705,7 @@ Index * Grigera, Juan: Contributors. (line 57) * group database, reading: Group Functions. (line 6) * group file: Group Functions. (line 6) -* group id of gawk user: Auto-set. (line 177) +* group id of gawk user: Auto-set. (line 186) * groups, information about: Group Functions. (line 6) * gsub <1>: String Functions. (line 135) * gsub: Using Constant Regexps. @@ -31991,7 +32000,7 @@ Index * mawk utility <3>: Concatenation. (line 36) * mawk utility <4>: Getline/Pipe. (line 62) * mawk utility: Escape Sequences. (line 124) -* maximum precision supported by MPFR library: Auto-set. (line 218) +* maximum precision supported by MPFR library: Auto-set. (line 227) * McPhee, Patrick: Contributors. (line 100) * message object files: Explaining gettext. (line 41) * message object files, converting from portable object files: I18N Example. @@ -32003,7 +32012,7 @@ Index * messages from extensions: Printing Messages. (line 6) * metacharacters in regular expressions: Regexp Operators. (line 6) * metacharacters, escape sequences for: Escape Sequences. (line 130) -* minimum precision supported by MPFR library: Auto-set. (line 221) +* minimum precision supported by MPFR library: Auto-set. (line 230) * mktime: Time Functions. (line 25) * modifiers, in format specifiers: Format Modifiers. (line 6) * monetary information, localization: Explaining gettext. (line 103) @@ -32056,7 +32065,7 @@ 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. @@ -32065,9 +32074,9 @@ Index * non-existent array elements: Reference to Elements. (line 23) * 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. @@ -32182,7 +32191,7 @@ Index * p debugger command (alias for print): Viewing And Changing Data. (line 36) * P1003.1 POSIX standard: Glossary. (line 454) -* parent process id of gawk process: Auto-set. (line 186) +* parent process id of gawk process: Auto-set. (line 195) * parentheses (), in a profile: Profiling. (line 146) * parentheses (), regexp operator: Regexp Operators. (line 79) * password file: Passwd Functions. (line 16) @@ -32346,24 +32355,24 @@ Index * printing, unduplicated lines of text: Uniq Program. (line 6) * printing, user information: Id Program. (line 6) * private variables: Library Names. (line 11) -* process group id of gawk process: Auto-set. (line 180) -* process id of gawk process: Auto-set. (line 183) +* process group id of gawk process: Auto-set. (line 189) +* process id of gawk process: Auto-set. (line 192) * processes, two-way communications with: Two-way I/O. (line 23) * processing data: Basic High Level. (line 6) * PROCINFO array <1>: Passwd Functions. (line 6) * PROCINFO array <2>: Time Functions. (line 47) -* PROCINFO array: Auto-set. (line 133) +* PROCINFO array: Auto-set. (line 142) * PROCINFO array, and communications via ptys: Two-way I/O. (line 116) * PROCINFO array, and group membership: Group Functions. (line 6) * PROCINFO array, and user and group ID numbers: Id Program. (line 15) * PROCINFO array, testing the field splitting: Passwd Functions. (line 161) -* PROCINFO array, uses: Auto-set. (line 239) +* PROCINFO array, uses: Auto-set. (line 248) * PROCINFO, values of sorted_in: Controlling Scanning. (line 24) * profiling awk programs: Profiling. (line 6) * profiling awk programs, dynamically: Profiling. (line 179) -* program identifiers: Auto-set. (line 151) +* program identifiers: Auto-set. (line 160) * program, definition of: Getting Started. (line 21) * programmers, attractiveness of: Two-way I/O. (line 6) * programming conventions, --non-decimal-data option: Nondecimal Data. @@ -32521,7 +32530,7 @@ Index * right shift: Bitwise Functions. (line 52) * 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 221) * Robbins, Arnold <1>: Future Extensions. (line 6) * Robbins, Arnold <2>: Bugs. (line 32) @@ -32550,9 +32559,9 @@ Index * RS variable: Records. (line 20) * RS variable, multiline records and: Multiple Line. (line 17) * rshift: Bitwise Functions. (line 52) -* RSTART variable: Auto-set. (line 259) +* RSTART variable: Auto-set. (line 268) * RSTART variable, match() function and: String Functions. (line 221) -* RT variable <1>: Auto-set. (line 266) +* RT variable <1>: Auto-set. (line 275) * RT variable <2>: Multiple Line. (line 129) * RT variable: Records. (line 132) * Rubin, Paul <1>: Contributors. (line 15) @@ -32658,7 +32667,7 @@ 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. @@ -32820,9 +32829,9 @@ Index * substr: String Functions. (line 479) * substring: String Functions. (line 479) * Sumner, Andrew: Other Versions. (line 64) -* supplementary groups of gawk process: Auto-set. (line 234) +* supplementary groups of gawk process: Auto-set. (line 243) * 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: I/O Functions. (line 72) @@ -33001,10 +33010,10 @@ Index * variables, uninitialized, as array subscripts: Uninitialized Subscripts. (line 6) * variables, user-defined: Variables. (line 6) -* version of gawk: Auto-set. (line 204) -* version of gawk extension API: Auto-set. (line 229) -* version of GNU MP library: Auto-set. (line 215) -* version of GNU MPFR library: Auto-set. (line 211) +* version of gawk: Auto-set. (line 213) +* version of gawk extension API: Auto-set. (line 238) +* version of GNU MP library: Auto-set. (line 224) +* version of GNU MPFR library: Auto-set. (line 220) * vertical bar (|): Regexp Operators. (line 69) * vertical bar (|), | operator (I/O) <1>: Precedence. (line 65) * vertical bar (|), | operator (I/O): Getline/Pipe. (line 9) @@ -33280,341 +33289,341 @@ Node: Built-in Variables405022 Node: User-modified406117 Ref: User-modified-Footnote-1414475 Node: Auto-set414537 -Ref: Auto-set-Footnote-1427601 -Ref: Auto-set-Footnote-2427806 -Node: ARGC and ARGV427862 -Node: Arrays431716 -Node: Array Basics433221 -Node: Array Intro434047 -Node: Reference to Elements438364 -Node: Assigning Elements440634 -Node: Array Example441125 -Node: Scanning an Array442857 -Node: Controlling Scanning445171 -Ref: Controlling Scanning-Footnote-1450258 -Node: Delete450574 -Ref: Delete-Footnote-1453339 -Node: Numeric Array Subscripts453396 -Node: Uninitialized Subscripts455579 -Node: Multidimensional457206 -Node: Multiscanning460299 -Node: Arrays of Arrays461888 -Node: Functions466528 -Node: Built-in467347 -Node: Calling Built-in468425 -Node: Numeric Functions470413 -Ref: Numeric Functions-Footnote-1474245 -Ref: Numeric Functions-Footnote-2474602 -Ref: Numeric Functions-Footnote-3474650 -Node: String Functions474919 -Ref: String Functions-Footnote-1497877 -Ref: String Functions-Footnote-2498006 -Ref: String Functions-Footnote-3498254 -Node: Gory Details498341 -Ref: table-sub-escapes500020 -Ref: table-sub-posix-92501374 -Ref: table-sub-proposed502725 -Ref: table-posix-sub504079 -Ref: table-gensub-escapes505624 -Ref: Gory Details-Footnote-1506800 -Ref: Gory Details-Footnote-2506851 -Node: I/O Functions507002 -Ref: I/O Functions-Footnote-1513992 -Node: Time Functions514139 -Ref: Time Functions-Footnote-1525122 -Ref: Time Functions-Footnote-2525190 -Ref: Time Functions-Footnote-3525348 -Ref: Time Functions-Footnote-4525459 -Ref: Time Functions-Footnote-5525571 -Ref: Time Functions-Footnote-6525798 -Node: Bitwise Functions526064 -Ref: table-bitwise-ops526626 -Ref: Bitwise Functions-Footnote-1530847 -Node: Type Functions531031 -Node: I18N Functions532182 -Node: User-defined533809 -Node: Definition Syntax534613 -Ref: Definition Syntax-Footnote-1539527 -Node: Function Example539596 -Ref: Function Example-Footnote-1542245 -Node: Function Caveats542267 -Node: Calling A Function542785 -Node: Variable Scope543740 -Node: Pass By Value/Reference546703 -Node: Return Statement550211 -Node: Dynamic Typing553192 -Node: Indirect Calls554123 -Node: Library Functions563810 -Ref: Library Functions-Footnote-1567323 -Ref: Library Functions-Footnote-2567466 -Node: Library Names567637 -Ref: Library Names-Footnote-1571110 -Ref: Library Names-Footnote-2571330 -Node: General Functions571416 -Node: Strtonum Function572444 -Node: Assert Function575374 -Node: Round Function578700 -Node: Cliff Random Function580241 -Node: Ordinal Functions581257 -Ref: Ordinal Functions-Footnote-1584334 -Ref: Ordinal Functions-Footnote-2584586 -Node: Join Function584797 -Ref: Join Function-Footnote-1586568 -Node: Getlocaltime Function586768 -Node: Readfile Function590509 -Node: Data File Management592348 -Node: Filetrans Function592980 -Node: Rewind Function597049 -Node: File Checking598436 -Node: Empty Files599530 -Node: Ignoring Assigns601760 -Node: Getopt Function603314 -Ref: Getopt Function-Footnote-1614617 -Node: Passwd Functions614820 -Ref: Passwd Functions-Footnote-1623798 -Node: Group Functions623886 -Node: Walking Arrays631970 -Node: Sample Programs634106 -Node: Running Examples634780 -Node: Clones635508 -Node: Cut Program636732 -Node: Egrep Program646583 -Ref: Egrep Program-Footnote-1654356 -Node: Id Program654466 -Node: Split Program658115 -Ref: Split Program-Footnote-1661634 -Node: Tee Program661762 -Node: Uniq Program664565 -Node: Wc Program671994 -Ref: Wc Program-Footnote-1676260 -Ref: Wc Program-Footnote-2676460 -Node: Miscellaneous Programs676552 -Node: Dupword Program677740 -Node: Alarm Program679771 -Node: Translate Program684578 -Ref: Translate Program-Footnote-1688965 -Ref: Translate Program-Footnote-2689213 -Node: Labels Program689347 -Ref: Labels Program-Footnote-1692718 -Node: Word Sorting692802 -Node: History Sorting696686 -Node: Extract Program698525 -Ref: Extract Program-Footnote-1706028 -Node: Simple Sed706156 -Node: Igawk Program709218 -Ref: Igawk Program-Footnote-1724375 -Ref: Igawk Program-Footnote-2724576 -Node: Anagram Program724714 -Node: Signature Program727782 -Node: Advanced Features728882 -Node: Nondecimal Data730768 -Node: Array Sorting732351 -Node: Controlling Array Traversal733048 -Node: Array Sorting Functions741332 -Ref: Array Sorting Functions-Footnote-1745201 -Node: Two-way I/O745395 -Ref: Two-way I/O-Footnote-1750827 -Node: TCP/IP Networking750909 -Node: Profiling753753 -Node: Internationalization761256 -Node: I18N and L10N762681 -Node: Explaining gettext763367 -Ref: Explaining gettext-Footnote-1768435 -Ref: Explaining gettext-Footnote-2768619 -Node: Programmer i18n768784 -Node: Translator i18n772986 -Node: String Extraction773780 -Ref: String Extraction-Footnote-1774741 -Node: Printf Ordering774827 -Ref: Printf Ordering-Footnote-1777609 -Node: I18N Portability777673 -Ref: I18N Portability-Footnote-1780122 -Node: I18N Example780185 -Ref: I18N Example-Footnote-1782823 -Node: Gawk I18N782895 -Node: Debugger783516 -Node: Debugging784487 -Node: Debugging Concepts784920 -Node: Debugging Terms786776 -Node: Awk Debugging789373 -Node: Sample Debugging Session790265 -Node: Debugger Invocation790785 -Node: Finding The Bug792118 -Node: List of Debugger Commands798605 -Node: Breakpoint Control799939 -Node: Debugger Execution Control803603 -Node: Viewing And Changing Data806963 -Node: Execution Stack810319 -Node: Debugger Info811786 -Node: Miscellaneous Debugger Commands815768 -Node: Readline Support820944 -Node: Limitations821775 -Node: Arbitrary Precision Arithmetic824027 -Ref: Arbitrary Precision Arithmetic-Footnote-1825676 -Node: General Arithmetic825824 -Node: Floating Point Issues827544 -Node: String Conversion Precision828425 -Ref: String Conversion Precision-Footnote-1830130 -Node: Unexpected Results830239 -Node: POSIX Floating Point Problems832392 -Ref: POSIX Floating Point Problems-Footnote-1836217 -Node: Integer Programming836255 -Node: Floating-point Programming837994 -Ref: Floating-point Programming-Footnote-1844325 -Ref: Floating-point Programming-Footnote-2844595 -Node: Floating-point Representation844859 -Node: Floating-point Context846024 -Ref: table-ieee-formats846863 -Node: Rounding Mode848247 -Ref: table-rounding-modes848726 -Ref: Rounding Mode-Footnote-1851741 -Node: Gawk and MPFR851920 -Node: Arbitrary Precision Floats853175 -Ref: Arbitrary Precision Floats-Footnote-1855618 -Node: Setting Precision855934 -Ref: table-predefined-precision-strings856620 -Node: Setting Rounding Mode858765 -Ref: table-gawk-rounding-modes859169 -Node: Floating-point Constants860356 -Node: Changing Precision861785 -Ref: Changing Precision-Footnote-1863182 -Node: Exact Arithmetic863356 -Node: Arbitrary Precision Integers866494 -Ref: Arbitrary Precision Integers-Footnote-1869509 -Node: Dynamic Extensions869656 -Node: Extension Intro871114 -Node: Plugin License872379 -Node: Extension Mechanism 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values927712 -Ref: Cached values-Footnote-1931202 -Node: Array Manipulation931293 -Ref: Array Manipulation-Footnote-1932391 -Node: Array Data Types932430 -Ref: Array Data Types-Footnote-1935133 -Node: Array Functions935225 -Node: Flattening Arrays939061 -Node: Creating Arrays945913 -Node: Extension API Variables950638 -Node: Extension Versioning951274 -Node: Extension API Informational Variables953175 -Node: Extension API Boilerplate954261 -Node: Finding Extensions958065 -Node: Extension Example958625 -Node: Internal File Description959355 -Node: Internal File Ops963446 -Ref: Internal File Ops-Footnote-1974955 -Node: Using Internal File Ops975095 -Ref: Using Internal File Ops-Footnote-1977448 -Node: Extension Samples977714 -Node: Extension Sample File Functions979238 -Node: Extension Sample Fnmatch987723 -Node: Extension Sample Fork989492 -Node: Extension Sample Inplace990705 -Node: Extension Sample Ord992483 -Node: Extension Sample Readdir993319 -Node: Extension Sample Revout994851 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Getting1043399 +Node: Extracting1044225 +Node: Distribution contents1045917 +Node: Unix Installation1051622 +Node: Quick Installation1052239 +Node: Additional Configuration Options1054685 +Node: Configuration Philosophy1056421 +Node: Non-Unix Installation1058775 +Node: PC Installation1059233 +Node: PC Binary Installation1060532 +Node: PC Compiling1062380 +Node: PC Testing1065324 +Node: PC Using1066500 +Node: Cygwin1070668 +Node: MSYS1071477 +Node: VMS Installation1071991 +Node: VMS Compilation1072755 +Ref: VMS Compilation-Footnote-11074007 +Node: VMS Dynamic Extensions1074065 +Node: VMS Installation Details1075438 +Node: VMS Running1077689 +Node: VMS GNV1080523 +Node: VMS Old Gawk1081246 +Node: Bugs1081716 +Node: Other Versions1085634 +Node: Notes1091718 +Node: Compatibility Mode1092518 +Node: Additions1093301 +Node: Accessing The Source1094228 +Node: Adding Code1095668 +Node: New Ports1101713 +Node: Derived Files1105848 +Ref: Derived Files-Footnote-11111169 +Ref: Derived 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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, -@code{ENVIRON["HOME"]} might be @file{/home/arnold}. 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. -@c (In a future version of @command{gawk}, it may do so.) +@code{ENVIRON["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 version 4.2, if not in POSIX +compatibility mode, @command{gawk} does update its own environment when +@code{ENVIRON} 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 @@ -36258,9 +36266,10 @@ mail at the Internet address noted previously. If you find bugs in one of the non-Unix ports of @command{gawk}, please send an electronic mail message to the person who maintains that port. They -are named in the following list, as well as in the @file{README} file in the @command{gawk} -distribution. Information in the @file{README} file should be considered -authoritative if it conflicts with this @value{DOCUMENT}. +are named in the following list, as well as in the @file{README} file +in the @command{gawk} distribution. Information in the @file{README} +file should be considered authoritative if it conflicts with this +@value{DOCUMENT}. The people maintaining the non-Unix ports of @command{gawk} are as follows: @@ -36285,7 +36294,8 @@ John Malmberg, @EMAIL{wb8tyw@@qsl.net,wb8tyw at qsl.net}. @end multitable If your bug is also reproducible under Unix, please send a copy of your -report to the @EMAIL{bug-gawk@@gnu.org,bug-gawk at gnu dot org} email list as well. +report to the @EMAIL{bug-gawk@@gnu.org,bug-gawk at gnu dot org} email +list as well. @c ENDOFRANGE dbugg @c ENDOFRANGE tblgawb diff --git a/doc/gawktexi.in b/doc/gawktexi.in index dfdf3434..cb35e37c 100644 --- a/doc/gawktexi.in +++ b/doc/gawktexi.in @@ -13131,10 +13131,18 @@ 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, -@code{ENVIRON["HOME"]} might be @file{/home/arnold}. 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. -@c (In a future version of @command{gawk}, it may do so.) +@code{ENVIRON["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 version 4.2, if not in POSIX +compatibility mode, @command{gawk} does update its own environment when +@code{ENVIRON} 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 @@ -35399,9 +35407,10 @@ mail at the Internet address noted previously. If you find bugs in one of the non-Unix ports of @command{gawk}, please send an electronic mail message to the person who maintains that port. They -are named in the following list, as well as in the @file{README} file in the @command{gawk} -distribution. Information in the @file{README} file should be considered -authoritative if it conflicts with this @value{DOCUMENT}. +are named in the following list, as well as in the @file{README} file +in the @command{gawk} distribution. Information in the @file{README} +file should be considered authoritative if it conflicts with this +@value{DOCUMENT}. The people maintaining the non-Unix ports of @command{gawk} are as follows: @@ -35426,7 +35435,8 @@ John Malmberg, @EMAIL{wb8tyw@@qsl.net,wb8tyw at qsl.net}. @end multitable If your bug is also reproducible under Unix, please send a copy of your -report to the @EMAIL{bug-gawk@@gnu.org,bug-gawk at gnu dot org} email list as well. +report to the @EMAIL{bug-gawk@@gnu.org,bug-gawk at gnu dot org} email +list as well. @c ENDOFRANGE dbugg @c ENDOFRANGE tblgawb |