FIXES revision 112336
185587Sobrien/**************************************************************** 285587SobrienCopyright (C) Lucent Technologies 1997 385587SobrienAll Rights Reserved 485587Sobrien 585587SobrienPermission to use, copy, modify, and distribute this software and 685587Sobrienits documentation for any purpose and without fee is hereby 785587Sobriengranted, provided that the above copyright notice appear in all 885587Sobriencopies and that both that the copyright notice and this 985587Sobrienpermission notice and warranty disclaimer appear in supporting 1085587Sobriendocumentation, and that the name Lucent Technologies or any of 1185587Sobrienits entities not be used in advertising or publicity pertaining 1285587Sobriento distribution of the software without specific, written prior 1385587Sobrienpermission. 1485587Sobrien 1585587SobrienLUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 1685587SobrienINCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. 1785587SobrienIN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY 1885587SobrienSPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 1985587SobrienWHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER 2085587SobrienIN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, 2185587SobrienARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF 2285587SobrienTHIS SOFTWARE. 2385587Sobrien****************************************************************/ 2485587Sobrien 2585587SobrienThis file lists all bug fixes, changes, etc., made since the AWK book 2685587Sobrienwas sent to the printers in August, 1987. 2785587Sobrien 28112336SobrienMar 14, 2003: 29112336Sobrien the internationalization changes, somewhat modified, are now 30112336Sobrien reinstated. in theory awk will now do character comparisons 31112336Sobrien and case conversions in national language, but "." will always 32112336Sobrien be the decimal point separator on input and output regardless 33112336Sobrien of national language. isblank(){} has an #ifndef. 34112336Sobrien 35112336Sobrien this no longer compiles on windows: LC_MESSAGES isn't defined 36112336Sobrien in vc6++. 37112336Sobrien 38112336Sobrien fixed subtle behavior in field and record splitting: if FS is 39112336Sobrien a single character and RS is not empty, \n is NOT a separator. 40112336Sobrien this tortuous reading is found in the awk book; behavior now 41112336Sobrien matches gawk and mawk. 42112336Sobrien 43108072SobrienDec 13, 2002: 44108072Sobrien for the moment, the internationalization changes of nov 29 are 45108072Sobrien rolled back -- programs like x = 1.2 don't work in some locales, 46108072Sobrien because the parser is expecting x = 1,2. until i understand this 47108072Sobrien better, this will have to wait. 48108072Sobrien 49107806SobrienNov 29, 2002: 50107806Sobrien modified b.c (with tiny changes in main and run) to support 51107806Sobrien locales, using strcoll and iswhatever tests for posix character 52107806Sobrien classes. thanks to ruslan ermilov (ru@freebsd.org) for code. 53107806Sobrien the function isblank doesn't seem to have propagated to any 54107806Sobrien header file near me, so it's there explicitly. not properly 55107806Sobrien tested on non-ascii character sets by me. 56107806Sobrien 57107806SobrienJun 28, 2002: 58107806Sobrien modified run/format() and tran/getsval() to do a slightly better 59107806Sobrien job on using OFMT for output from print and CONVFMT for other 60107806Sobrien number->string conversions, as promised by posix and done by 61107806Sobrien gawk and mawk. there are still places where it doesn't work 62107806Sobrien right if CONVFMT is changed; by then the STR attribute of the 63107806Sobrien variable has been irrevocably set. thanks to arnold robbins for 64107806Sobrien code and examples. 65107806Sobrien 66107806Sobrien fixed subtle bug in format that could get core dump. thanks to 67107806Sobrien Jaromir Dolecek <jdolecek@NetBSD.org> for finding and fixing. 68107806Sobrien minor cleanup in run.c / format() at the same time. 69107806Sobrien 70107806Sobrien added some tests for null pointers to debugging printf's, which 71107806Sobrien were never intended for external consumption. thanks to dave 72107806Sobrien kerns (dkerns@lucent.com) for pointing this out. 73107806Sobrien 74107806Sobrien GNU compatibility: an empty regexp matches anything (thanks to 75107806Sobrien dag-erling smorgrav, des@ofug.org). subject to reversion if 76107806Sobrien this does more harm than good. 77107806Sobrien 78107806Sobrien pervasive small changes to make things more const-correct, as 79107806Sobrien reported by gcc's -Wwrite-strings. as it says in the gcc manual, 80107806Sobrien this may be more nuisance than useful. provoked by a suggestion 81107806Sobrien and code from arnaud desitter, arnaud@nimbus.geog.ox.ac.uk 82107806Sobrien 83107806Sobrien minor documentation changes to note that this now compiles out 84107806Sobrien of the box on Mac OS X. 85107806Sobrien 8690902SdesFeb 10, 2002: 8790902Sdes changed types in posix chars structure to quiet solaris cc. 8890902Sdes 8990902SdesJan 1, 2002: 9090902Sdes fflush() or fflush("") flushes all files and pipes. 9190902Sdes 9290902Sdes length(arrayname) returns number of elements; thanks to 9390902Sdes arnold robbins for suggestion. 9490902Sdes 9590902Sdes added a makefile.win to make it easier to build on windows. 9690902Sdes based on dan allen's buildwin.bat. 9790902Sdes 9890902SdesNov 16, 2001: 9990902Sdes added support for posix character class names like [:digit:], 10090902Sdes which are not exactly shorter than [0-9] and perhaps no more 10190902Sdes portable. thanks to dag-erling smorgrav for code. 10290902Sdes 10390902SdesFeb 16, 2001: 10490902Sdes removed -m option; no longer needed, and it was actually 10590902Sdes broken (noted thanks to volker kiefel). 10690902Sdes 10790902SdesFeb 10, 2001: 10890902Sdes fixed an appalling bug in gettok: any sequence of digits, +,-, E, e, 10990902Sdes and period was accepted as a valid number if it started with a period. 11090902Sdes this would never have happened with the lex version. 11190902Sdes 11290902Sdes other 1-character botches, now fixed, include a bare $ and a 11390902Sdes bare " at the end of the input. 11490902Sdes 11590902SdesFeb 7, 2001: 11690902Sdes more (const char *) casts in b.c and tran.c to silence warnings. 11790902Sdes 11885587SobrienNov 15, 2000: 11985587Sobrien fixed a bug introduced in august 1997 that caused expressions 12085587Sobrien like $f[1] to be syntax errors. thanks to arnold robbins for 12185587Sobrien noticing this and providing a fix. 12285587Sobrien 12385587SobrienOct 30, 2000: 12485587Sobrien fixed some nextfile bugs: not handling all cases. thanks to 12585587Sobrien arnold robbins for pointing this out. new regressions added. 12685587Sobrien 12785587Sobrien close() is now a function. it returns whatever the library 12885587Sobrien fclose returns, and -1 for closing a file or pipe that wasn't 12985587Sobrien opened. 13085587Sobrien 13185587SobrienSep 24, 2000: 13285587Sobrien permit \n explicitly in character classes; won't work right 13385587Sobrien if comes in as "[\n]" but ok as /[\n]/, because of multiple 13485587Sobrien processing of \'s. thanks to arnold robbins. 13585587Sobrien 13685587SobrienJuly 5, 2000: 13785587Sobrien minor fiddles in tran.c to keep compilers happy about uschar. 13885587Sobrien thanks to norman wilson. 13985587Sobrien 14085587SobrienMay 25, 2000: 14185587Sobrien yet another attempt at making 8-bit input work, with another 14285587Sobrien band-aid in b.c (member()), and some (uschar) casts to head 14385587Sobrien off potential errors in subscripts (like isdigit). also 14485587Sobrien changed HAT to NCHARS-2. thanks again to santiago vila. 14585587Sobrien 14685587Sobrien changed maketab.c to ignore apparently out of range definitions 14785587Sobrien instead of halting; new freeBSD generates one. thanks to 14885587Sobrien jon snader <jsnader@ix.netcom.com> for pointing out the problem. 14985587Sobrien 15085587SobrienMay 2, 2000: 15185587Sobrien fixed an 8-bit problem in b.c by making several char*'s into 15285587Sobrien unsigned char*'s. not clear i have them all yet. thanks to 15385587Sobrien Santiago Vila <sanvila@unex.es> for the bug report. 15485587Sobrien 15585587SobrienApr 21, 2000: 15685587Sobrien finally found and fixed a memory leak in function call; it's 15785587Sobrien been there since functions were added ~1983. thanks to 15885587Sobrien jon bentley for the test case that found it. 15985587Sobrien 16085587Sobrien added test in envinit to catch environment "variables" with 16185587Sobrien names begining with '='; thanks to Berend Hasselman. 16285587Sobrien 16385587SobrienJul 28, 1999: 16485587Sobrien added test in defn() to catch function foo(foo), which 16585587Sobrien otherwise recurses until core dump. thanks to arnold 16685587Sobrien robbins for noticing this. 16785587Sobrien 16885587SobrienJun 20, 1999: 16985587Sobrien added *bp in gettok in lex.c; appears possible to exit function 17085587Sobrien without terminating the string. thanks to russ cox. 17185587Sobrien 17285587SobrienJun 2, 1999: 17385587Sobrien added function stdinit() to run to initialize files[] array, 17485587Sobrien in case stdin, etc., are not constants; some compilers care. 17585587Sobrien 17685587SobrienMay 10, 1999: 17785587Sobrien replaced the ERROR ... FATAL, etc., macros with functions 17885587Sobrien based on vprintf, to avoid problems caused by overrunning 17985587Sobrien fixed-size errbuf array. thanks to ralph corderoy for the 18085587Sobrien impetus, and for pointing out a string termination bug in 18185587Sobrien qstring as well. 18285587Sobrien 18385587SobrienApr 21, 1999: 18485587Sobrien fixed bug that caused occasional core dumps with commandline 18585587Sobrien variable with value ending in \. (thanks to nelson beebe for 18685587Sobrien the test case.) 18785587Sobrien 18885587SobrienApr 16, 1999: 18985587Sobrien with code kindly provided by Bruce Lilly, awk now parses 19085587Sobrien /=/ and similar constructs more sensibly in more places. 19185587Sobrien Bruce also provided some helpful test cases. 19285587Sobrien 19385587SobrienApr 5, 1999: 19485587Sobrien changed true/false to True/False in run.c to make it 19585587Sobrien easier to compile with C++. Added some casts on malloc 19685587Sobrien and realloc to be honest about casts; ditto. changed 19785587Sobrien ltype int to long in struct rrow to reduce some 64-bit 19885587Sobrien complaints; other changes scattered throughout for the 19985587Sobrien same purpose. thanks to Nelson Beebe for these portability 20085587Sobrien improvements. 20185587Sobrien 20285587Sobrien removed some horrible pointer-int casting in b.c and elsewhere 20385587Sobrien by adding ptoi and itonp to localize the casts, which are 20485587Sobrien all benign. fixed one incipient bug that showed up on sgi 20585587Sobrien in 64-bit mode. 20685587Sobrien 20785587Sobrien reset lineno for new source file; include filename in error 20885587Sobrien message. also fixed line number error in continuation lines. 20985587Sobrien (thanks to Nelson Beebe for both of these.) 21085587Sobrien 21185587SobrienMar 24, 1999: 21285587Sobrien Nelson Beebe notes that irix 5.3 yacc dies with a bogus 21385587Sobrien error; use a newer version or switch to bison, since sgi 21485587Sobrien is unlikely to fix it. 21585587Sobrien 21685587SobrienMar 5, 1999: 21785587Sobrien changed isnumber to is_number to avoid the problem caused by 21885587Sobrien versions of ctype.h that include the name isnumber. 21985587Sobrien 22085587Sobrien distribution now includes a script for building on a Mac, 22185587Sobrien thanks to Dan Allen. 22285587Sobrien 22385587SobrienFeb 20, 1999: 22485587Sobrien fixed memory leaks in run.c (call) and tran.c (setfval). 22585587Sobrien thanks to Stephen Nutt for finding these and providing the fixes. 22685587Sobrien 22785587SobrienJan 13, 1999: 22885587Sobrien replaced srand argument by (unsigned int) in run.c; 22985587Sobrien avoids problem on Mac and potentially on Unix & Windows. 23085587Sobrien thanks to Dan Allen. 23185587Sobrien 23285587Sobrien added a few (int) casts to silence useless compiler warnings. 23385587Sobrien e.g., errorflag= in run.c jump(). 23485587Sobrien 23585587Sobrien added proctab.c to the bundle outout; one less thing 23685587Sobrien to have to compile out of the box. 23785587Sobrien 23885587Sobrien added calls to _popen and _pclose to the win95 stub for 23985587Sobrien pipes (thanks to Steve Adams for this helpful suggestion). 24085587Sobrien seems to work, though properties are not well understood 24185587Sobrien by me, and it appears that under some circumstances the 24285587Sobrien pipe output is truncated. Be careful. 24385587Sobrien 24485587SobrienOct 19, 1998: 24585587Sobrien fixed a couple of bugs in getrec: could fail to update $0 24685587Sobrien after a getline var; because inputFS wasn't initialized, 24785587Sobrien could split $0 on every character, a misleading diversion. 24885587Sobrien 24985587Sobrien fixed caching bug in makedfa: LRU was actually removing 25085587Sobrien least often used. 25185587Sobrien 25285587Sobrien thanks to ross ridge for finding these, and for providing 25385587Sobrien great bug reports. 25485587Sobrien 25585587SobrienMay 12, 1998: 25685587Sobrien fixed potential bug in readrec: might fail to update record 25785587Sobrien pointer after growing. thanks to dan levy for spotting this 25885587Sobrien and suggesting the fix. 25985587Sobrien 26085587SobrienMar 12, 1998: 26185587Sobrien added -V to print version number and die. 26285587Sobrien 26385587SobrienFeb 11, 1998: 26485587Sobrien subtle silent bug in lex.c: if the program ended with a number 26585587Sobrien longer than 1 digit, part of the input would be pushed back and 26685587Sobrien parsed again because token buffer wasn't terminated right. 26785587Sobrien example: awk 'length($0) > 10'. blush. at least i found it 26885587Sobrien myself. 26985587Sobrien 27085587SobrienAug 31, 1997: 27185587Sobrien s/adelete/awkdelete/: SGI uses this in malloc.h. 27285587Sobrien thanks to nelson beebe for pointing this one out. 27385587Sobrien 27485587SobrienAug 21, 1997: 27585587Sobrien fixed some bugs in sub and gsub when replacement includes \\. 27685587Sobrien this is a dark, horrible corner, but at least now i believe that 27785587Sobrien the behavior is the same as gawk and the intended posix standard. 27885587Sobrien thanks to arnold robbins for advice here. 27985587Sobrien 28085587SobrienAug 9, 1997: 28185587Sobrien somewhat regretfully, replaced the ancient lex-based lexical 28285587Sobrien analyzer with one written in C. it's longer, generates less code, 28385587Sobrien and more portable; the old one depended too much on mysterious 28485587Sobrien properties of lex that were not preserved in other environments. 28585587Sobrien in theory these recognize the same language. 28685587Sobrien 28785587Sobrien now using strtod to test whether a string is a number, instead of 28885587Sobrien the convoluted original function. should be more portable and 28985587Sobrien reliable if strtod is implemented right. 29085587Sobrien 29185587Sobrien removed now-pointless optimization in makefile that tries to avoid 29285587Sobrien recompilation when awkgram.y is changed but symbols are not. 29385587Sobrien 29485587Sobrien removed most fixed-size arrays, though a handful remain, some 29585587Sobrien of which are unchecked. you have been warned. 29685587Sobrien 29785587SobrienAug 4, 1997: 29885587Sobrien with some trepidation, replaced the ancient code that managed 29985587Sobrien fields and $0 in fixed-size arrays with arrays that grow on 30085587Sobrien demand. there is still some tension between trying to make this 30185587Sobrien run fast and making it clean; not sure it's right yet. 30285587Sobrien 30385587Sobrien the ill-conceived -mr and -mf arguments are now useful only 30485587Sobrien for debugging. previous dynamic string code removed. 30585587Sobrien 30685587Sobrien numerous other minor cleanups along the way. 30785587Sobrien 30885587SobrienJul 30, 1997: 30985587Sobrien using code provided by dan levy (to whom profuse thanks), replaced 31085587Sobrien fixed-size arrays and awkward kludges by a fairly uniform mechanism 31185587Sobrien to grow arrays as needed for printf, sub, gsub, etc. 31285587Sobrien 31385587SobrienJul 23, 1997: 31485587Sobrien falling off the end of a function returns "" and 0, not 0. 31585587Sobrien thanks to arnold robbins. 31685587Sobrien 31785587SobrienJun 17, 1997: 31885587Sobrien replaced several fixed-size arrays by dynamically-created ones 31985587Sobrien in run.c; added overflow tests to some previously unchecked cases. 32085587Sobrien getline, toupper, tolower. 32185587Sobrien 32285587Sobrien getline code is still broken in that recursive calls may wind 32385587Sobrien up using the same space. [fixed later] 32485587Sobrien 32585587Sobrien increased RECSIZE to 8192 to push problems further over the horizon. 32685587Sobrien 32785587Sobrien added \r to \n as input line separator for programs, not data. 32885587Sobrien damn CRLFs. 32985587Sobrien 33085587Sobrien modified format() to permit explicit printf("%c", 0) to include 33185587Sobrien a null byte in output. thanks to ken stailey for the fix. 33285587Sobrien 33385587Sobrien added a "-safe" argument that disables file output (print >, 33485587Sobrien print >>), process creation (cmd|getline, print |, system), and 33585587Sobrien access to the environment (ENVIRON). this is a first approximation 33685587Sobrien to a "safe" version of awk, but don't rely on it too much. thanks 33785587Sobrien to joan feigenbaum and matt blaze for the inspiration long ago. 33885587Sobrien 33985587SobrienJul 8, 1996: 34085587Sobrien fixed long-standing bug in sub, gsub(/a/, "\\\\&"); thanks to 34185587Sobrien ralph corderoy. 34285587Sobrien 34385587SobrienJun 29, 1996: 34485587Sobrien fixed awful bug in new field splitting; didn't get all the places 34585587Sobrien where input was done. 34685587Sobrien 34785587SobrienJun 28, 1996: 34885587Sobrien changed field-splitting to conform to posix definition: fields are 34985587Sobrien split using the value of FS at the time of input; it used to be 35085587Sobrien the value when the field or NF was first referred to, a much less 35185587Sobrien predictable definition. thanks to arnold robbins for encouragement 35285587Sobrien to do the right thing. 35385587Sobrien 35485587SobrienMay 28, 1996: 35585587Sobrien fixed appalling but apparently unimportant bug in parsing octal 35685587Sobrien numbers in reg exprs. 35785587Sobrien 35885587Sobrien explicit hex in reg exprs now limited to 2 chars: \xa, \xaa. 35985587Sobrien 36085587SobrienMay 27, 1996: 36185587Sobrien cleaned up some declarations so gcc -Wall is now almost silent. 36285587Sobrien 36385587Sobrien makefile now includes backup copies of ytab.c and lexyy.c in case 36485587Sobrien one makes before looking; it also avoids recreating lexyy.c unless 36585587Sobrien really needed. 36685587Sobrien 36785587Sobrien s/aprintf/awkprint, s/asprintf/awksprintf/ to avoid some name clashes 36885587Sobrien with unwisely-written header files. 36985587Sobrien 37085587Sobrien thanks to jeffrey friedl for several of these. 37185587Sobrien 37285587SobrienMay 26, 1996: 37385587Sobrien an attempt to rationalize the (unsigned) char issue. almost all 37485587Sobrien instances of unsigned char have been removed; the handful of places 37585587Sobrien in b.c where chars are used as table indices have been hand-crafted. 37685587Sobrien added some latin-1 tests to the regression, but i'm not confident; 37785587Sobrien none of my compilers seem to care much. thanks to nelson beebe for 37885587Sobrien pointing out some others that do care. 37985587Sobrien 38085587SobrienMay 2, 1996: 38185587Sobrien removed all register declarations. 38285587Sobrien 38385587Sobrien enhanced split(), as in gawk, etc: split(s, a, "") splits s into 38485587Sobrien a[1]...a[length(s)] with each character a single element. 38585587Sobrien 38685587Sobrien made the same changes for field-splitting if FS is "". 38785587Sobrien 38885587Sobrien added nextfile, as in gawk: causes immediate advance to next 38985587Sobrien input file. (thanks to arnold robbins for inspiration and code). 39085587Sobrien 39185587Sobrien small fixes to regexpr code: can now handle []], [[], and 39285587Sobrien variants; [] is now a syntax error, rather than matching 39385587Sobrien everything; [z-a] is now empty, not z. far from complete 39485587Sobrien or correct, however. (thanks to jeffrey friedl for pointing out 39585587Sobrien some awful behaviors.) 39685587Sobrien 39785587SobrienApr 29, 1996: 39885587Sobrien replaced uchar by uschar everwhere; apparently some compilers 39985587Sobrien usurp this name and this causes conflicts. 40085587Sobrien 40185587Sobrien fixed call to time in run.c (bltin); arg is time_t *. 40285587Sobrien 40385587Sobrien replaced horrible pointer/long punning in b.c by a legitimate 40485587Sobrien union. should be safer on 64-bit machines and cleaner everywhere. 40585587Sobrien (thanks to nelson beebe for pointing out some of these problems.) 40685587Sobrien 40785587Sobrien replaced nested comments by #if 0...#endif in run.c, lib.c. 40885587Sobrien 40985587Sobrien removed getsval, setsval, execute macros from run.c and lib.c. 41085587Sobrien machines are 100x faster than they were when these macros were 41185587Sobrien first used. 41285587Sobrien 41385587Sobrien revised filenames: awk.g.y => awkgram.y, awk.lx.l => awklex.l, 41485587Sobrien y.tab.[ch] => ytab.[ch], lex.yy.c => lexyy.c, all in the aid of 41585587Sobrien portability to nameless systems. 41685587Sobrien 41785587Sobrien "make bundle" now includes yacc and lex output files for recipients 41885587Sobrien who don't have yacc or lex. 41985587Sobrien 42085587SobrienAug 15, 1995: 42185587Sobrien initialized Cells in setsymtab more carefully; some fields 42285587Sobrien were not set. (thanks to purify, all of whose complaints i 42385587Sobrien think i now understand.) 42485587Sobrien 42585587Sobrien fixed at least one error in gsub that looked at -1-th element 42685587Sobrien of an array when substituting for a null match (e.g., $). 42785587Sobrien 42885587Sobrien delete arrayname is now legal; it clears the elements but leaves 42985587Sobrien the array, which may not be the right behavior. 43085587Sobrien 43185587Sobrien modified makefile: my current make can't cope with the test used 43285587Sobrien to avoid unnecessary yacc invocations. 43385587Sobrien 43485587SobrienJul 17, 1995: 43585587Sobrien added dynamically growing strings to awk.lx.l and b.c 43685587Sobrien to permit regular expressions to be much bigger. 43785587Sobrien the state arrays can still overflow. 43885587Sobrien 43985587SobrienAug 24, 1994: 44085587Sobrien detect duplicate arguments in function definitions (mdm). 44185587Sobrien 44285587SobrienMay 11, 1994: 44385587Sobrien trivial fix to printf to limit string size in sub(). 44485587Sobrien 44585587SobrienApr 22, 1994: 44685587Sobrien fixed yet another subtle self-assignment problem: 44785587Sobrien $1 = $2; $1 = $1 clobbered $1. 44885587Sobrien 44985587Sobrien Regression tests now use private echo, to avoid quoting problems. 45085587Sobrien 45185587SobrienFeb 2, 1994: 45285587Sobrien changed error() to print line number as %d, not %g. 45385587Sobrien 45485587SobrienJul 23, 1993: 45585587Sobrien cosmetic changes: increased sizes of some arrays, 45685587Sobrien reworded some error messages. 45785587Sobrien 45885587Sobrien added CONVFMT as in posix (just replaced OFMT in getsval) 45985587Sobrien 46085587Sobrien FILENAME is now "" until the first thing that causes a file 46185587Sobrien to be opened. 46285587Sobrien 46385587SobrienNov 28, 1992: 46485587Sobrien deleted yyunput and yyoutput from proto.h; 46585587Sobrien different versions of lex give these different declarations. 46685587Sobrien 46785587SobrienMay 31, 1992: 46885587Sobrien added -mr N and -mf N options: more record and fields. 46985587Sobrien these really ought to adjust automatically. 47085587Sobrien 47185587Sobrien cleaned up some error messages; "out of space" now means 47285587Sobrien malloc returned NULL in all cases. 47385587Sobrien 47485587Sobrien changed rehash so that if it runs out, it just returns; 47585587Sobrien things will continue to run slow, but maybe a bit longer. 47685587Sobrien 47785587SobrienApr 24, 1992: 47885587Sobrien remove redundant close of stdin when using -f -. 47985587Sobrien 48085587Sobrien got rid of core dump with -d; awk -d just prints date. 48185587Sobrien 48285587SobrienApr 12, 1992: 48385587Sobrien added explicit check for /dev/std(in,out,err) in redirection. 48485587Sobrien unlike gawk, no /dev/fd/n yet. 48585587Sobrien 48685587Sobrien added (file/pipe) builtin. hard to test satisfactorily. 48785587Sobrien not posix. 48885587Sobrien 48985587SobrienFeb 20, 1992: 49085587Sobrien recompile after abortive changes; should be unchanged. 49185587Sobrien 49285587SobrienDec 2, 1991: 49385587Sobrien die-casting time: converted to ansi C, installed that. 49485587Sobrien 49585587SobrienNov 30, 1991: 49685587Sobrien fixed storage leak in freefa, failing to recover [N]CCL. 49785587Sobrien thanks to Bill Jones (jones@cs.usask.ca) 49885587Sobrien 49985587SobrienNov 19, 1991: 50085587Sobrien use RAND_MAX instead of literal in builtin(). 50185587Sobrien 50285587SobrienNov 12, 1991: 50385587Sobrien cranked up some fixed-size arrays in b.c, and added a test for 50485587Sobrien overflow in penter. thanks to mark larsen. 50585587Sobrien 50685587SobrienSep 24, 1991: 50785587Sobrien increased buffer in gsub. a very crude fix to a general problem. 50885587Sobrien and again on Sep 26. 50985587Sobrien 51085587SobrienAug 18, 1991: 51185587Sobrien enforce variable name syntax for commandline variables: has to 51285587Sobrien start with letter or _. 51385587Sobrien 51485587SobrienJul 27, 1991: 51585587Sobrien allow newline after ; in for statements. 51685587Sobrien 51785587SobrienJul 21, 1991: 51885587Sobrien fixed so that in self-assignment like $1=$1, side effects 51985587Sobrien like recomputing $0 take place. (this is getting subtle.) 52085587Sobrien 52185587SobrienJun 30, 1991: 52285587Sobrien better test for detecting too-long output record. 52385587Sobrien 52485587SobrienJun 2, 1991: 52585587Sobrien better defense against very long printf strings. 52685587Sobrien made break and continue illegal outside of loops. 52785587Sobrien 52885587SobrienMay 13, 1991: 52985587Sobrien removed extra arg on gettemp, tempfree. minor error message rewording. 53085587Sobrien 53185587SobrienMay 6, 1991: 53285587Sobrien fixed silly bug in hex parsing in hexstr(). 53385587Sobrien removed an apparently unnecessary test in isnumber(). 53485587Sobrien warn about weird printf conversions. 53585587Sobrien fixed unchecked array overwrite in relex(). 53685587Sobrien 53785587Sobrien changed for (i in array) to access elements in sorted order. 53885587Sobrien then unchanged it -- it really does run slower in too many cases. 53985587Sobrien left the code in place, commented out. 54085587Sobrien 54185587SobrienFeb 10, 1991: 54285587Sobrien check error status on all writes, to avoid banging on full disks. 54385587Sobrien 54485587SobrienJan 28, 1991: 54585587Sobrien awk -f - reads the program from stdin. 54685587Sobrien 54785587SobrienJan 11, 1991: 54885587Sobrien failed to set numeric state on $0 in cmd|getline context in run.c. 54985587Sobrien 55085587SobrienNov 2, 1990: 55185587Sobrien fixed sleazy test for integrality in getsval; use modf. 55285587Sobrien 55385587SobrienOct 29, 1990: 55485587Sobrien fixed sleazy buggy code in lib.c that looked (incorrectly) for 55585587Sobrien too long input lines. 55685587Sobrien 55785587SobrienOct 14, 1990: 55885587Sobrien fixed the bug on p. 198 in which it couldn't deduce that an 55985587Sobrien argument was an array in some contexts. replaced the error 56085587Sobrien message in intest() by code that damn well makes it an array. 56185587Sobrien 56285587SobrienOct 8, 1990: 56385587Sobrien fixed horrible bug: types and values were not preserved in 56485587Sobrien some kinds of self-assignment. (in assign().) 56585587Sobrien 56685587SobrienAug 24, 1990: 56785587Sobrien changed NCHARS to 256 to handle 8-bit characters in strings 56885587Sobrien presented to match(), etc. 56985587Sobrien 57085587SobrienJun 26, 1990: 57185587Sobrien changed struct rrow (awk.h) to use long instead of int for lval, 57285587Sobrien since cfoll() stores a pointer in it. now works better when int's 57385587Sobrien are smaller than pointers! 57485587Sobrien 57585587SobrienMay 6, 1990: 57685587Sobrien AVA fixed the grammar so that ! is uniformly of the same precedence as 57785587Sobrien unary + and -. This renders illegal some constructs like !x=y, which 57885587Sobrien now has to be parenthesized as !(x=y), and makes others work properly: 57985587Sobrien !x+y is (!x)+y, and x!y is x !y, not two pattern-action statements. 58085587Sobrien (These problems were pointed out by Bob Lenk of Posix.) 58185587Sobrien 58285587Sobrien Added \x to regular expressions (already in strings). 58385587Sobrien Limited octal to octal digits; \8 and \9 are not octal. 58485587Sobrien Centralized the code for parsing escapes in regular expressions. 58585587Sobrien Added a bunch of tests to T.re and T.sub to verify some of this. 58685587Sobrien 58785587SobrienFeb 9, 1990: 58885587Sobrien fixed null pointer dereference bug in main.c: -F[nothing]. sigh. 58985587Sobrien 59085587Sobrien restored srand behavior: it returns the current seed. 59185587Sobrien 59285587SobrienJan 18, 1990: 59385587Sobrien srand now returns previous seed value (0 to start). 59485587Sobrien 59585587SobrienJan 5, 1990: 59685587Sobrien fix potential problem in tran.c -- something was freed, 59785587Sobrien then used in freesymtab. 59885587Sobrien 59985587SobrienOct 18, 1989: 60085587Sobrien another try to get the max number of open files set with 60185587Sobrien relatively machine-independent code. 60285587Sobrien 60385587Sobrien small fix to input() in case of multiple reads after EOF. 60485587Sobrien 60585587SobrienOct 11, 1989: 60685587Sobrien FILENAME is now defined in the BEGIN block -- too many old 60785587Sobrien programs broke. 60885587Sobrien 60985587Sobrien "-" means stdin in getline as well as on the commandline. 61085587Sobrien 61185587Sobrien added a bunch of casts to the code to tell the truth about 61285587Sobrien char * vs. unsigned char *, a right royal pain. added a 61385587Sobrien setlocale call to the front of main, though probably no one 61485587Sobrien has it usefully implemented yet. 61585587Sobrien 61685587SobrienAug 24, 1989: 61785587Sobrien removed redundant relational tests against nullnode if parse 61885587Sobrien tree already had a relational at that point. 61985587Sobrien 62085587SobrienAug 11, 1989: 62185587Sobrien fixed bug: commandline variable assignment has to look like 62285587Sobrien var=something. (consider the man page for =, in file =.1) 62385587Sobrien 62485587Sobrien changed number of arguments to functions to static arrays 62585587Sobrien to avoid repeated malloc calls. 62685587Sobrien 62785587SobrienAug 2, 1989: 62885587Sobrien restored -F (space) separator 62985587Sobrien 63085587SobrienJul 30, 1989: 63185587Sobrien added -v x=1 y=2 ... for immediate commandline variable assignment; 63285587Sobrien done before the BEGIN block for sure. they have to precede the 63385587Sobrien program if the program is on the commandline. 63485587Sobrien Modified Aug 2 to require a separate -v for each assignment. 63585587Sobrien 63685587SobrienJul 10, 1989: 63785587Sobrien fixed ref-thru-zero bug in environment code in tran.c 63885587Sobrien 63985587SobrienJun 23, 1989: 64085587Sobrien add newline to usage message. 64185587Sobrien 64285587SobrienJun 14, 1989: 64385587Sobrien added some missing ansi printf conversion letters: %i %X %E %G. 64485587Sobrien no sensible meaning for h or L, so they may not do what one expects. 64585587Sobrien 64685587Sobrien made %* conversions work. 64785587Sobrien 64885587Sobrien changed x^y so that if n is a positive integer, it's done 64985587Sobrien by explicit multiplication, thus achieving maximum accuracy. 65085587Sobrien (this should be done by pow() but it seems not to be locally.) 65185587Sobrien done to x ^= y as well. 65285587Sobrien 65385587SobrienJun 4, 1989: 65485587Sobrien ENVIRON array contains environment: if shell variable V=thing, 65585587Sobrien ENVIRON["V"] is "thing" 65685587Sobrien 65785587Sobrien multiple -f arguments permitted. error reporting is naive. 65885587Sobrien (they were permitted before, but only the last was used.) 65985587Sobrien 66085587Sobrien fixed a really stupid botch in the debugging macro dprintf 66185587Sobrien 66285587Sobrien fixed order of evaluation of commandline assignments to match 66385587Sobrien what the book claims: an argument of the form x=e is evaluated 66485587Sobrien at the time it would have been opened if it were a filename (p 63). 66585587Sobrien this invalidates the suggested answer to ex 4-1 (p 195). 66685587Sobrien 66785587Sobrien removed some code that permitted -F (space) fieldseparator, 66885587Sobrien since it didn't quite work right anyway. (restored aug 2) 66985587Sobrien 67085587SobrienApr 27, 1989: 67185587Sobrien Line number now accumulated correctly for comment lines. 67285587Sobrien 67385587SobrienApr 26, 1989: 67485587Sobrien Debugging output now includes a version date, 67585587Sobrien if one compiles it into the source each time. 67685587Sobrien 67785587SobrienApr 9, 1989: 67885587Sobrien Changed grammar to prohibit constants as 3rd arg of sub and gsub; 67985587Sobrien prevents class of overwriting-a-constant errors. (Last one?) 68085587Sobrien This invalidates the "banana" example on page 43 of the book. 68185587Sobrien 68285587Sobrien Added \a ("alert"), \v (vertical tab), \xhhh (hexadecimal), 68385587Sobrien as in ANSI, for strings. Rescinded the sloppiness that permitted 68485587Sobrien non-octal digits in \ooo. Warning: not all compilers and libraries 68585587Sobrien will be able to deal with \x correctly. 68685587Sobrien 68785587SobrienJan 9, 1989: 68885587Sobrien Fixed bug that caused tempcell list to contain a duplicate. 68985587Sobrien The fix is kludgy. 69085587Sobrien 69185587SobrienDec 17, 1988: 69285587Sobrien Catches some more commandline errors in main. 69385587Sobrien Removed redundant decl of modf in run.c (confuses some compilers). 69485587Sobrien Warning: there's no single declaration of malloc, etc., in awk.h 69585587Sobrien that seems to satisfy all compilers. 69685587Sobrien 69785587SobrienDec 7, 1988: 69885587Sobrien Added a bit of code to error printing to avoid printing nulls. 69985587Sobrien (Not clear that it actually would.) 70085587Sobrien 70185587SobrienNov 27, 1988: 70285587Sobrien With fear and trembling, modified the grammar to permit 70385587Sobrien multiple pattern-action statements on one line without 70485587Sobrien an explicit separator. By definition, this capitulation 70585587Sobrien to the ghost of ancient implementations remains undefined 70685587Sobrien and thus subject to change without notice or apology. 70785587Sobrien DO NOT COUNT ON IT. 70885587Sobrien 70985587SobrienOct 30, 1988: 71085587Sobrien Fixed bug in call() that failed to recover storage. 71185587Sobrien 71285587Sobrien A warning is now generated if there are more arguments 71385587Sobrien in the call than in the definition (in lieu of fixing 71485587Sobrien another storage leak). 71585587Sobrien 71685587SobrienOct 20, 1988: 71785587Sobrien Fixed %c: if expr is numeric, use numeric value; 71885587Sobrien otherwise print 1st char of string value. still 71985587Sobrien doesn't work if the value is 0 -- won't print \0. 72085587Sobrien 72185587Sobrien Added a few more checks for running out of malloc. 72285587Sobrien 72385587SobrienOct 12, 1988: 72485587Sobrien Fixed bug in call() that freed local arrays twice. 72585587Sobrien 72685587Sobrien Fixed to handle deletion of non-existent array right; 72785587Sobrien complains about attempt to delete non-array element. 72885587Sobrien 72985587SobrienSep 30, 1988: 73085587Sobrien Now guarantees to evaluate all arguments of built-in 73185587Sobrien functions, as in C; the appearance is that arguments 73285587Sobrien are evaluated before the function is called. Places 73385587Sobrien affected are sub (gsub was ok), substr, printf, and 73485587Sobrien all the built-in arithmetic functions in bltin(). 73585587Sobrien A warning is generated if a bltin() is called with 73685587Sobrien the wrong number of arguments. 73785587Sobrien 73885587Sobrien This requires changing makeprof on p167 of the book. 73985587Sobrien 74085587SobrienAug 23, 1988: 74185587Sobrien setting FILENAME in BEGIN caused core dump, apparently 74285587Sobrien because it was freeing space not allocated by malloc. 74385587Sobrien 74485587SobrienJuly 24, 1988: 74585587Sobrien fixed egregious error in toupper/tolower functions. 74685587Sobrien still subject to rescinding, however. 74785587Sobrien 74885587SobrienJuly 2, 1988: 74985587Sobrien flush stdout before opening file or pipe 75085587Sobrien 75185587SobrienJuly 2, 1988: 75285587Sobrien performance bug in b.c/cgoto(): not freeing some sets of states. 75385587Sobrien partial fix only right now, and the number of states increased 75485587Sobrien to make it less obvious. 75585587Sobrien 75685587SobrienJune 1, 1988: 75785587Sobrien check error status on close 75885587Sobrien 75985587SobrienMay 28, 1988: 76085587Sobrien srand returns seed value it's using. 76185587Sobrien see 1/18/90 76285587Sobrien 76385587SobrienMay 22, 1988: 76485587Sobrien Removed limit on depth of function calls. 76585587Sobrien 76685587SobrienMay 10, 1988: 76785587Sobrien Fixed lib.c to permit _ in commandline variable names. 76885587Sobrien 76985587SobrienMar 25, 1988: 77085587Sobrien main.c fixed to recognize -- as terminator of command- 77185587Sobrien line options. Illegal options flagged. 77285587Sobrien Error reporting slightly cleaned up. 77385587Sobrien 77485587SobrienDec 2, 1987: 77585587Sobrien Newer C compilers apply a strict scope rule to extern 77685587Sobrien declarations within functions. Two extern declarations in 77785587Sobrien lib.c and tran.c have been moved to obviate this problem. 77885587Sobrien 77985587SobrienOct xx, 1987: 78085587Sobrien Reluctantly added toupper and tolower functions. 78185587Sobrien Subject to rescinding without notice. 78285587Sobrien 78385587SobrienSep 17, 1987: 78485587Sobrien Error-message printer had printf(s) instead of 78585587Sobrien printf("%s",s); got core dumps when the message 78685587Sobrien included a %. 78785587Sobrien 78885587SobrienSep 12, 1987: 78985587Sobrien Very long printf strings caused core dump; 79085587Sobrien fixed aprintf, asprintf, format to catch them. 79185587Sobrien Can still get a core dump in printf itself. 79285587Sobrien 79385587Sobrien 794