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Diffstat (limited to 'doc/gawk.info')
| -rw-r--r-- | doc/gawk.info | 743 |
1 files changed, 374 insertions, 369 deletions
diff --git a/doc/gawk.info b/doc/gawk.info index d8e27f4a..91c9d516 100644 --- a/doc/gawk.info +++ b/doc/gawk.info @@ -3707,14 +3707,19 @@ using the variable-assignment feature (*note Other Arguments::): This sets `RS' to `/' before processing `BBS-list'. Using an unusual character such as `/' for the record separator -produces correct behavior in the vast majority of cases. However, the -following (extreme) pipeline prints a surprising `1': +produces correct behavior in the vast majority of cases. - $ echo | awk 'BEGIN { RS = "a" } ; { print NF }' + There is one unusual case, that occurs when `gawk' is being fully +POSIX-compliant (*note Options::). Then, the following (extreme) +pipeline prints a surprising `1': + + $ echo | gawk --posix 'BEGIN { RS = "a" } ; { print NF }' -| 1 There is one field, consisting of a newline. The value of the built-in variable `NF' is the number of fields in the current record. +(In the normal case, `gawk' treats the newline as whitespace, printing +`0' as the result. Most other versions of `awk' also act this way.) Reaching the end of an input file terminates the current input record, even if the last character in the file is not the character in @@ -24960,7 +24965,7 @@ Index (line 131) * advanced features, constants, values of: Nondecimal-numbers. (line 67) -* advanced features, data files as single record: Records. (line 175) +* advanced features, data files as single record: Records. (line 180) * advanced features, fixed-width data: Constant Size. (line 9) * advanced features, FNR/NR variables: Auto-set. (line 207) * advanced features, gawk: Advanced Features. (line 6) @@ -25374,7 +25379,7 @@ Index * common extensions, length() applied to an array: String Functions. (line 196) * common extensions, nextfile statement: Nextfile Statement. (line 6) -* common extensions, RS as a regexp: Records. (line 115) +* common extensions, RS as a regexp: Records. (line 120) * common extensions, single character fields: Single Character Fields. (line 6) * comp.lang.awk newsgroup: Bugs. (line 38) @@ -25470,7 +25475,7 @@ Index * dark corner, format-control characters: Control Letters. (line 18) * dark corner, FS as null string: Single Character Fields. (line 20) -* dark corner, input files: Records. (line 98) +* dark corner, input files: Records. (line 103) * dark corner, invoking awk: Command Line. (line 16) * dark corner, length() function: String Functions. (line 182) * dark corner, multiline records: Multiple Line. (line 35) @@ -25483,7 +25488,7 @@ Index * dark corner, regexp constants, as arguments to user-defined functions: Using Constant Regexps. (line 43) * dark corner, split() function: String Functions. (line 361) -* dark corner, strings, storing: Records. (line 191) +* dark corner, strings, storing: Records. (line 196) * dark corner, value of ARGV[0]: Auto-set. (line 35) * data, fixed-width: Constant Size. (line 9) * data-driven languages: Basic High Level. (line 83) @@ -25659,19 +25664,19 @@ Index * differences in awk and gawk, print/printf statements: Format Modifiers. (line 13) * differences in awk and gawk, PROCINFO array: Auto-set. (line 123) -* differences in awk and gawk, record separators: Records. (line 112) +* 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 167) +* differences in awk and gawk, RS/RT variables: Records. (line 172) * differences in awk and gawk, RT variable: Auto-set. (line 196) * differences in awk and gawk, single-character fields: Single Character Fields. (line 6) * differences in awk and gawk, split() function: String Functions. (line 349) * differences in awk and gawk, strings: Scalar Constants. (line 20) -* differences in awk and gawk, strings, storing: Records. (line 187) +* differences in awk and gawk, strings, storing: Records. (line 192) * differences in awk and gawk, strtonum() function (gawk): String Functions. (line 404) * differences in awk and gawk, TEXTDOMAIN variable: User-modified. @@ -25823,7 +25828,7 @@ Index * extensions, common, length() applied to an array: String Functions. (line 196) * extensions, common, nextfile statement: Nextfile Statement. (line 6) -* extensions, common, RS as a regexp: Records. (line 115) +* extensions, common, RS as a regexp: Records. (line 120) * extensions, common, single character fields: Single Character Fields. (line 6) * extensions, in gawk, not in POSIX awk: POSIX/GNU. (line 6) @@ -25895,7 +25900,7 @@ Index * files, /inet/... (gawk): TCP/IP Networking. (line 6) * files, /inet4/... (gawk): TCP/IP Networking. (line 6) * files, /inet6/... (gawk): TCP/IP Networking. (line 6) -* files, as single records: Records. (line 196) +* files, as single records: Records. (line 201) * files, awk programs in: Long. (line 6) * files, awkprof.out: Profiling. (line 10) * files, awkvars.out: Options. (line 93) @@ -26123,7 +26128,7 @@ Index * gawk, RT variable in <2>: Getline/Variable/File. (line 10) * gawk, RT variable in <3>: Multiple Line. (line 129) -* gawk, RT variable in: Records. (line 112) +* gawk, RT variable in: Records. (line 117) * gawk, See Also awk: Preface. (line 36) * gawk, source code, obtaining: Getting. (line 6) * gawk, splitting fields and: Constant Size. (line 87) @@ -26569,7 +26574,7 @@ Index * null strings <2>: Truth Values. (line 6) * null strings <3>: Regexp Field Splitting. (line 43) -* null strings: Records. (line 102) +* null strings: Records. (line 107) * null strings, array elements and: Delete. (line 27) * null strings, as array subscripts: Uninitialized Subscripts. (line 43) @@ -26738,7 +26743,7 @@ Index (line 113) * portability, close() function and: Close Files And Pipes. (line 81) -* portability, data files as single record: Records. (line 175) +* portability, data files as single record: Records. (line 180) * portability, deleting array elements: Delete. (line 52) * portability, example programs: Library Functions. (line 31) * portability, fflush() function and: I/O Functions. (line 29) @@ -26919,15 +26924,15 @@ Index * record separators <1>: User-modified. (line 134) * record separators: Records. (line 14) * record separators, changing: Records. (line 81) -* record separators, regular expressions as: Records. (line 112) +* record separators, regular expressions as: Records. (line 117) * record separators, with multiline records: Multiple Line. (line 10) * records <1>: Basic High Level. (line 71) * records: Reading Files. (line 14) * records, multiline: Multiple Line. (line 6) * records, printing: Print. (line 22) * records, splitting input into: Records. (line 6) -* records, terminating: Records. (line 112) -* records, treating files as: Records. (line 196) +* records, terminating: Records. (line 117) +* records, treating files as: Records. (line 201) * recursive functions: Definition Syntax. (line 73) * redirection of input: Getline/File. (line 6) * redirection of output: Redirection. (line 6) @@ -26953,7 +26958,7 @@ Index (line 6) * regular expressions, as patterns <1>: Regexp Patterns. (line 6) * regular expressions, as patterns: Regexp Usage. (line 6) -* regular expressions, as record separators: Records. (line 112) +* regular expressions, as record separators: Records. (line 117) * regular expressions, case sensitivity <1>: User-modified. (line 82) * regular expressions, case sensitivity: Case-sensitivity. (line 6) * regular expressions, computed: Computed Regexps. (line 6) @@ -27029,7 +27034,7 @@ Index * RT variable <2>: Getline/Variable/File. (line 10) * RT variable <3>: Multiple Line. (line 129) -* RT variable: Records. (line 112) +* RT variable: Records. (line 117) * Rubin, Paul <1>: Contributors. (line 16) * Rubin, Paul: History. (line 30) * rule, definition of: Getting Started. (line 21) @@ -27070,7 +27075,7 @@ Index * separators, field, POSIX and: Fields. (line 6) * separators, for records <1>: User-modified. (line 134) * separators, for records: Records. (line 14) -* separators, for records, regular expressions as: Records. (line 112) +* separators, for records, regular expressions as: Records. (line 117) * separators, for statements in actions: Action Overview. (line 19) * separators, subscript: User-modified. (line 147) * set debugger command: Viewing And Changing Data. @@ -27187,7 +27192,7 @@ Index * strings, converting <1>: Bitwise Functions. (line 107) * strings, converting: Conversion. (line 6) * strings, converting, numbers to: User-modified. (line 28) -* strings, empty, See null strings: Records. (line 102) +* strings, empty, See null strings: Records. (line 107) * strings, extracting: String Extraction. (line 6) * strings, for localization: Programmer i18n. (line 14) * strings, length of: Scalar Constants. (line 20) @@ -27230,7 +27235,7 @@ Index * TCP/IP, support for: Special Network. (line 6) * tee utility: Tee Program. (line 6) * tee.awk program: Tee Program. (line 26) -* terminating records: Records. (line 112) +* terminating records: Records. (line 117) * testbits.awk program: Bitwise Functions. (line 68) * Texinfo <1>: Adding Code. (line 99) * Texinfo <2>: Distribution contents. @@ -27541,351 +27546,351 @@ Node: Leftmost Longest155607 Node: Computed Regexps156808 Node: Reading Files160218 Node: Records162159 -Ref: Records-Footnote-1170833 -Node: Fields170870 -Ref: Fields-Footnote-1173903 -Node: Nonconstant Fields173989 -Node: Changing Fields176191 -Node: Field Separators182172 -Node: Default Field Splitting184801 -Node: Regexp Field Splitting185918 -Node: Single Character Fields189260 -Node: Command Line Field Separator190319 -Node: Field Splitting Summary193760 -Ref: Field Splitting Summary-Footnote-1196952 -Node: Constant Size197053 -Node: Splitting By Content201637 -Ref: Splitting By Content-Footnote-1205363 -Node: Multiple Line205403 -Ref: Multiple Line-Footnote-1211250 -Node: Getline211429 -Node: Plain Getline213657 -Node: Getline/Variable215746 -Node: Getline/File216887 -Node: Getline/Variable/File218209 -Ref: Getline/Variable/File-Footnote-1219808 -Node: Getline/Pipe219895 -Node: Getline/Variable/Pipe222455 -Node: Getline/Coprocess223562 -Node: Getline/Variable/Coprocess224805 -Node: Getline Notes225519 -Node: Getline Summary228306 -Ref: table-getline-variants228649 -Node: Command line directories229505 -Node: Printing230130 -Node: Print231761 -Node: Print Examples233098 -Node: Output Separators235882 -Node: OFMT237642 -Node: Printf239000 -Node: Basic Printf239906 -Node: Control Letters241445 -Node: Format Modifiers245257 -Node: Printf Examples251266 -Node: Redirection253981 -Node: Special Files260965 -Node: Special FD261498 -Ref: Special FD-Footnote-1265123 -Node: Special Network265197 -Node: Special Caveats266047 -Node: Close Files And Pipes266843 -Ref: Close Files And Pipes-Footnote-1273866 -Ref: Close Files And Pipes-Footnote-2274014 -Node: Expressions274164 -Node: Values275296 -Node: Constants275972 -Node: Scalar Constants276652 -Ref: Scalar Constants-Footnote-1277511 -Node: Nondecimal-numbers277693 -Node: Regexp Constants280752 -Node: Using Constant 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License977882 -Node: Index1003019 +Ref: Records-Footnote-1171083 +Node: Fields171120 +Ref: Fields-Footnote-1174153 +Node: Nonconstant Fields174239 +Node: Changing Fields176441 +Node: Field Separators182422 +Node: Default Field Splitting185051 +Node: Regexp Field Splitting186168 +Node: Single Character Fields189510 +Node: Command Line Field Separator190569 +Node: Field Splitting Summary194010 +Ref: Field Splitting Summary-Footnote-1197202 +Node: Constant Size197303 +Node: Splitting By Content201887 +Ref: Splitting By Content-Footnote-1205613 +Node: Multiple Line205653 +Ref: Multiple Line-Footnote-1211500 +Node: Getline211679 +Node: Plain Getline213907 +Node: Getline/Variable215996 +Node: Getline/File217137 +Node: Getline/Variable/File218459 +Ref: Getline/Variable/File-Footnote-1220058 +Node: Getline/Pipe220145 +Node: Getline/Variable/Pipe222705 +Node: Getline/Coprocess223812 +Node: Getline/Variable/Coprocess225055 +Node: Getline Notes225769 +Node: Getline Summary228556 +Ref: table-getline-variants228899 +Node: Command line directories229755 +Node: Printing230380 +Node: Print232011 +Node: Print Examples233348 +Node: Output Separators236132 +Node: OFMT237892 +Node: Printf239250 +Node: Basic Printf240156 +Node: Control Letters241695 +Node: Format Modifiers245507 +Node: Printf Examples251516 +Node: Redirection254231 +Node: Special Files261215 +Node: Special FD261748 +Ref: Special FD-Footnote-1265373 +Node: Special Network265447 +Node: Special Caveats266297 +Node: Close Files And Pipes267093 +Ref: Close Files And Pipes-Footnote-1274116 +Ref: Close Files And Pipes-Footnote-2274264 +Node: Expressions274414 +Node: Values275546 +Node: Constants276222 +Node: Scalar Constants276902 +Ref: Scalar Constants-Footnote-1277761 +Node: Nondecimal-numbers277943 +Node: Regexp Constants281002 +Node: Using Constant Regexps281477 +Node: Variables284532 +Node: Using Variables285187 +Node: Assignment Options286911 +Node: Conversion288783 +Ref: table-locale-affects294159 +Ref: 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Additions860003 +Node: Accessing The Source860815 +Node: Adding Code862240 +Node: New Ports868207 +Node: Dynamic Extensions872320 +Node: Internals873696 +Node: Plugin License882799 +Node: Sample Library883433 +Node: Internal File Description884119 +Node: Internal File Ops887834 +Ref: Internal File Ops-Footnote-1892615 +Node: Using Internal File Ops892755 +Node: Future Extensions895132 +Node: Basic Concepts897636 +Node: Basic High Level898393 +Ref: Basic High Level-Footnote-1902428 +Node: Basic Data Typing902613 +Node: Floating Point Issues907138 +Node: String Conversion Precision908221 +Ref: String Conversion Precision-Footnote-1909921 +Node: Unexpected Results910030 +Node: POSIX Floating Point Problems911856 +Ref: POSIX Floating Point Problems-Footnote-1915561 +Node: Glossary915599 +Node: Copying940575 +Node: GNU Free Documentation License978132 +Node: Index1003269 End Tag Table |