FIXES revision 224776
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 28224776SruAug 10, 2011: 29224776Sru another fix to avoid core dump with delete(ARGV); again, many thanks 30224776Sru to ruslan ermilov. 31224776Sru 32224731SruAug 7, 2011: 33224731Sru split(s, a, //) now behaves the same as split(s, a, "") 34224731Sru 35224731SruJun 12, 2011: 36224731Sru /pat/, \n /pat/ {...} is now legal, though bad style to use. 37224731Sru 38224731Sru added checks to new -v code that permits -vnospace; thanks to 39224731Sru ruslan ermilov for spotting this and providing the patch. 40224731Sru 41224731Sru removed fixed limit on number of open files; thanks to aleksey 42224731Sru cheusov and christos zoulos. 43224731Sru 44224731Sru fixed day 1 bug that resurrected deleted elements of ARGV when 45224731Sru used as filenames (in lib.c). 46224731Sru 47224731Sru minor type fiddles to make gcc -Wall -pedantic happier (but not 48224731Sru totally so); turned on -fno-strict-aliasing in makefile. 49224731Sru 50221533SruMay 6, 2011: 51221533Sru added #ifdef for isblank. 52221533Sru now allows -ffoo as well as -f foo arguments. 53221533Sru (thanks, ruslan) 54221533Sru 55221381SruMay 1, 2011: 56221381Sru after advice from todd miller, kevin lo, ruslan ermilov, 57221381Sru and arnold robbins, changed srand() to return the previous 58221381Sru seed (which is 1 on the first call of srand). the seed is 59221381Sru an Awkfloat internally though converted to unsigned int to 60221381Sru pass to the library srand(). thanks, everyone. 61221381Sru 62221381Sru fixed a subtle (and i hope low-probability) overflow error 63221381Sru in fldbld, by adding space for one extra \0. thanks to 64221381Sru robert bassett for spotting this one and providing a fix. 65221381Sru 66221381Sru removed the files related to compilation on windows. i no 67221381Sru longer have anything like a current windows environment, so 68221381Sru i can't test any of it. 69221381Sru 70221381SruMay 23, 2010: 71221381Sru fixed long-standing overflow bug in run.c; many thanks to 72221381Sru nelson beebe for spotting it and providing the fix. 73221381Sru 74221381Sru fixed bug that didn't parse -vd=1 properly; thanks to santiago 75221381Sru vila for spotting it. 76221381Sru 77221381SruFeb 8, 2010: 78221381Sru i give up. replaced isblank with isspace in b.c; there are 79221381Sru no consistent header files. 80221381Sru 81201951SruNov 26, 2009: 82201951Sru fixed a long-standing issue with when FS takes effect. a 83201951Sru change to FS is now noticed immediately for subsequent splits. 84201951Sru 85201951Sru changed the name getline() to awkgetline() to avoid yet another 86201951Sru name conflict somewhere. 87201951Sru 88201951SruFeb 11, 2009: 89201951Sru temporarily for now defined HAS_ISBLANK, since that seems to 90201951Sru be the best way through the thicket. isblank arrived in C99, 91201951Sru but seems to be arriving at different systems at different 92201951Sru times. 93201951Sru 94201951SruOct 8, 2008: 95201951Sru fixed typo in b.c that set tmpvec wrongly. no one had ever 96201951Sru run into the problem, apparently. thanks to alistair crooks. 97201951Sru 98172958SobrienOct 23, 2007: 99172958Sobrien minor fix in lib.c: increase inputFS to 100, change malloc 100172958Sobrien for fields to n+1. 101172958Sobrien 102172958Sobrien fixed memory fault caused by out of order test in setsval. 103172958Sobrien 104172958Sobrien thanks to david o'brien, freebsd, for both fixes. 105172958Sobrien 106170331SrafanMay 1, 2007: 107170331Srafan fiddle in makefile to fix for BSD make; thanks to igor sobrado. 108170331Srafan 109170331SrafanMar 31, 2007: 110170331Srafan fixed some null pointer refs calling adjbuf. 111170331Srafan 112170331SrafanFeb 21, 2007: 113170331Srafan fixed a bug in matching the null RE in sub and gsub. thanks to al aho 114170331Srafan who actually did the fix (in b.c), and to wolfgang seeberg for finding 115170331Srafan it and providing a very compact test case. 116170331Srafan 117170331Srafan fixed quotation in b.c; thanks to Hal Pratt and the Princeton Dante 118170331Srafan Project. 119170331Srafan 120170331Srafan removed some no-effect asserts in run.c. 121170331Srafan 122170331Srafan fiddled maketab.c to not complain about bison-generated values. 123170331Srafan 124170331Srafan removed the obsolete -V argument; fixed --version to print the 125170331Srafan version and exit. 126170331Srafan 127170331Srafan fixed wording and an outright error in the usage message; thanks to igor 128170331Srafan sobrado and jason mcintyre. 129170331Srafan 130170331Srafan fixed a bug in -d that caused core dump if no program followed. 131170331Srafan 132170331SrafanJan 1, 2007: 133170331Srafan dropped mac.code from makefile; there are few non-MacOSX 134170331Srafan mac's these days. 135170331Srafan 136170331SrafanJan 17, 2006: 137170331Srafan system() not flagged as unsafe in the unadvertised -safe option. 138170331Srafan found it while enhancing tests before shipping the ;login: article. 139170331Srafan practice what you preach. 140170331Srafan 141170331Srafan removed the 9-years-obsolete -mr and -mf flags. 142170331Srafan 143170331Srafan added -version and --version options. 144170331Srafan 145170331Srafan core dump on linux with BEGIN {nextfile}, now fixed. 146170331Srafan 147170331Srafan removed some #ifdef's in run.c and lex.c that appear to no 148170331Srafan longer be necessary. 149170331Srafan 150146299SruApr 24, 2005: 151146299Sru modified lib.c so that values of $0 et al are preserved in the END 152146299Sru block, apparently as required by posix. thanks to havard eidnes 153146299Sru for the report and code. 154146299Sru 155146299SruJan 14, 2005: 156146299Sru fixed infinite loop in parsing, originally found by brian tsang. 157146299Sru thanks to arnold robbins for a suggestion that started me 158146299Sru rethinking it. 159146299Sru 160146299SruDec 31, 2004: 161146299Sru prevent overflow of -f array in main, head off potential error in 162146299Sru call of SYNTAX(), test malloc return in lib.c, all with thanks to 163146299Sru todd miller. 164146299Sru 165146299SruDec 22, 2004: 166146299Sru cranked up size of NCHARS; coverity thinks it can be overrun with 167146299Sru smaller size, and i think that's right. added some assertions to b.c 168146299Sru to catch places where it might overrun. the RE code is still fragile. 169146299Sru 170146299SruDec 5, 2004: 171146299Sru fixed a couple of overflow problems with ridiculous field numbers: 172146299Sru e.g., print $(2^32-1). thanks to ruslan ermilov, giorgos keramidas 173146299Sru and david o'brien at freebsd.org for patches. this really should 174146299Sru be re-done from scratch. 175146299Sru 176146299SruNov 21, 2004: 177146299Sru fixed another 25-year-old RE bug, in split. it's another failure 178146299Sru to (re-)initialize. thanks to steve fisher for spotting this and 179146299Sru providing a good test case. 180146299Sru 181125601SruNov 22, 2003: 182125601Sru fixed a bug in regular expressions that dates (so help me) from 1977; 183125601Sru it's been there from the beginning. an anchored longest match that 184125601Sru was longer than the number of states triggered a failure to initialize 185125601Sru the machine properly. many thanks to moinak ghosh for not only finding 186125601Sru this one but for providing a fix, in some of the most mysterious 187125601Sru code known to man. 188125601Sru 189125601Sru fixed a storage leak in call() that appears to have been there since 190125601Sru 1983 or so -- a function without an explicit return that assigns a 191125601Sru string to a parameter leaked a Cell. thanks to moinak ghosh for 192125601Sru spotting this very subtle one. 193125601Sru 194125601SruJul 31, 2003: 195125601Sru fixed, thanks to andrey chernov and ruslan ermilov, a bug in lex.c 196125601Sru that mis-handled the character 255 in input. (it was being compared 197125601Sru to EOF with a signed comparison.) 198125601Sru 199118194SruJul 29, 2003: 200118194Sru fixed (i think) the long-standing botch that included the beginning of 201118194Sru line state ^ for RE's in the set of valid characters; this led to a 202118194Sru variety of odd problems, including failure to properly match certain 203118194Sru regular expressions in non-US locales. thanks to ruslan for keeping 204118194Sru at this one. 205118194Sru 206118194SruJul 28, 2003: 207118194Sru n-th try at getting internationalization right, with thanks to volker 208118194Sru kiefel, arnold robbins and ruslan ermilov for advice, though they 209118194Sru should not be blamed for the outcome. according to posix, "." is the 210118194Sru radix character in programs and command line arguments regardless of 211118194Sru the locale; otherwise, the locale should prevail for input and output 212118194Sru of numbers. so it's intended to work that way. 213118194Sru 214118194Sru i have rescinded the attempt to use strcoll in expanding shorthands in 215118194Sru regular expressions (cclenter). its properties are much too 216118194Sru surprising; for example [a-c] matches aAbBc in locale en_US but abBcC 217118194Sru in locale fr_CA. i can see how this might arise by implementation 218118194Sru but i cannot explain it to a human user. (this behavior can be seen 219118194Sru in gawk as well; we're leaning on the same library.) 220118194Sru 221118194Sru the issue appears to be that strcoll is meant for sorting, where 222118194Sru merging upper and lower case may make sense (though note that unix 223118194Sru sort does not do this by default either). it is not appropriate 224118194Sru for regular expressions, where the goal is to match specific 225118194Sru patterns of characters. in any case, the notations [:lower:], etc., 226118194Sru are available in awk, and they are more likely to work correctly in 227118194Sru most locales. 228118194Sru 229118194Sru a moratorium is hereby declared on internationalization changes. 230118194Sru i apologize to friends and colleagues in other parts of the world. 231118194Sru i would truly like to get this "right", but i don't know what 232118194Sru that is, and i do not want to keep making changes until it's clear. 233118194Sru 234118194SruJul 4, 2003: 235118194Sru fixed bug that permitted non-terminated RE, as in "awk /x". 236118194Sru 237118194SruJun 1, 2003: 238118194Sru subtle change to split: if source is empty, number of elems 239118194Sru is always 0 and the array is not set. 240118194Sru 241118194SruMar 21, 2003: 242118194Sru added some parens to isblank, in another attempt to make things 243118194Sru internationally portable. 244118194Sru 245112336SobrienMar 14, 2003: 246112336Sobrien the internationalization changes, somewhat modified, are now 247112336Sobrien reinstated. in theory awk will now do character comparisons 248112336Sobrien and case conversions in national language, but "." will always 249112336Sobrien be the decimal point separator on input and output regardless 250112336Sobrien of national language. isblank(){} has an #ifndef. 251112336Sobrien 252112336Sobrien this no longer compiles on windows: LC_MESSAGES isn't defined 253112336Sobrien in vc6++. 254112336Sobrien 255112336Sobrien fixed subtle behavior in field and record splitting: if FS is 256112336Sobrien a single character and RS is not empty, \n is NOT a separator. 257112336Sobrien this tortuous reading is found in the awk book; behavior now 258112336Sobrien matches gawk and mawk. 259112336Sobrien 260108072SobrienDec 13, 2002: 261108072Sobrien for the moment, the internationalization changes of nov 29 are 262108072Sobrien rolled back -- programs like x = 1.2 don't work in some locales, 263108072Sobrien because the parser is expecting x = 1,2. until i understand this 264108072Sobrien better, this will have to wait. 265108072Sobrien 266107806SobrienNov 29, 2002: 267107806Sobrien modified b.c (with tiny changes in main and run) to support 268107806Sobrien locales, using strcoll and iswhatever tests for posix character 269107806Sobrien classes. thanks to ruslan ermilov (ru@freebsd.org) for code. 270107806Sobrien the function isblank doesn't seem to have propagated to any 271107806Sobrien header file near me, so it's there explicitly. not properly 272107806Sobrien tested on non-ascii character sets by me. 273107806Sobrien 274107806SobrienJun 28, 2002: 275107806Sobrien modified run/format() and tran/getsval() to do a slightly better 276107806Sobrien job on using OFMT for output from print and CONVFMT for other 277107806Sobrien number->string conversions, as promised by posix and done by 278107806Sobrien gawk and mawk. there are still places where it doesn't work 279107806Sobrien right if CONVFMT is changed; by then the STR attribute of the 280107806Sobrien variable has been irrevocably set. thanks to arnold robbins for 281107806Sobrien code and examples. 282107806Sobrien 283107806Sobrien fixed subtle bug in format that could get core dump. thanks to 284107806Sobrien Jaromir Dolecek <jdolecek@NetBSD.org> for finding and fixing. 285107806Sobrien minor cleanup in run.c / format() at the same time. 286107806Sobrien 287107806Sobrien added some tests for null pointers to debugging printf's, which 288107806Sobrien were never intended for external consumption. thanks to dave 289107806Sobrien kerns (dkerns@lucent.com) for pointing this out. 290107806Sobrien 291107806Sobrien GNU compatibility: an empty regexp matches anything (thanks to 292107806Sobrien dag-erling smorgrav, des@ofug.org). subject to reversion if 293107806Sobrien this does more harm than good. 294107806Sobrien 295107806Sobrien pervasive small changes to make things more const-correct, as 296107806Sobrien reported by gcc's -Wwrite-strings. as it says in the gcc manual, 297107806Sobrien this may be more nuisance than useful. provoked by a suggestion 298107806Sobrien and code from arnaud desitter, arnaud@nimbus.geog.ox.ac.uk 299107806Sobrien 300107806Sobrien minor documentation changes to note that this now compiles out 301107806Sobrien of the box on Mac OS X. 302107806Sobrien 30390902SdesFeb 10, 2002: 30490902Sdes changed types in posix chars structure to quiet solaris cc. 30590902Sdes 30690902SdesJan 1, 2002: 30790902Sdes fflush() or fflush("") flushes all files and pipes. 30890902Sdes 30990902Sdes length(arrayname) returns number of elements; thanks to 31090902Sdes arnold robbins for suggestion. 31190902Sdes 31290902Sdes added a makefile.win to make it easier to build on windows. 31390902Sdes based on dan allen's buildwin.bat. 31490902Sdes 31590902SdesNov 16, 2001: 31690902Sdes added support for posix character class names like [:digit:], 31790902Sdes which are not exactly shorter than [0-9] and perhaps no more 31890902Sdes portable. thanks to dag-erling smorgrav for code. 31990902Sdes 32090902SdesFeb 16, 2001: 32190902Sdes removed -m option; no longer needed, and it was actually 32290902Sdes broken (noted thanks to volker kiefel). 32390902Sdes 32490902SdesFeb 10, 2001: 32590902Sdes fixed an appalling bug in gettok: any sequence of digits, +,-, E, e, 32690902Sdes and period was accepted as a valid number if it started with a period. 32790902Sdes this would never have happened with the lex version. 32890902Sdes 32990902Sdes other 1-character botches, now fixed, include a bare $ and a 33090902Sdes bare " at the end of the input. 33190902Sdes 33290902SdesFeb 7, 2001: 33390902Sdes more (const char *) casts in b.c and tran.c to silence warnings. 33490902Sdes 33585587SobrienNov 15, 2000: 33685587Sobrien fixed a bug introduced in august 1997 that caused expressions 33785587Sobrien like $f[1] to be syntax errors. thanks to arnold robbins for 33885587Sobrien noticing this and providing a fix. 33985587Sobrien 34085587SobrienOct 30, 2000: 34185587Sobrien fixed some nextfile bugs: not handling all cases. thanks to 34285587Sobrien arnold robbins for pointing this out. new regressions added. 34385587Sobrien 34485587Sobrien close() is now a function. it returns whatever the library 34585587Sobrien fclose returns, and -1 for closing a file or pipe that wasn't 34685587Sobrien opened. 34785587Sobrien 34885587SobrienSep 24, 2000: 34985587Sobrien permit \n explicitly in character classes; won't work right 35085587Sobrien if comes in as "[\n]" but ok as /[\n]/, because of multiple 35185587Sobrien processing of \'s. thanks to arnold robbins. 35285587Sobrien 35385587SobrienJuly 5, 2000: 35485587Sobrien minor fiddles in tran.c to keep compilers happy about uschar. 35585587Sobrien thanks to norman wilson. 35685587Sobrien 35785587SobrienMay 25, 2000: 35885587Sobrien yet another attempt at making 8-bit input work, with another 35985587Sobrien band-aid in b.c (member()), and some (uschar) casts to head 36085587Sobrien off potential errors in subscripts (like isdigit). also 36185587Sobrien changed HAT to NCHARS-2. thanks again to santiago vila. 36285587Sobrien 36385587Sobrien changed maketab.c to ignore apparently out of range definitions 36485587Sobrien instead of halting; new freeBSD generates one. thanks to 36585587Sobrien jon snader <jsnader@ix.netcom.com> for pointing out the problem. 36685587Sobrien 36785587SobrienMay 2, 2000: 36885587Sobrien fixed an 8-bit problem in b.c by making several char*'s into 36985587Sobrien unsigned char*'s. not clear i have them all yet. thanks to 37085587Sobrien Santiago Vila <sanvila@unex.es> for the bug report. 37185587Sobrien 37285587SobrienApr 21, 2000: 37385587Sobrien finally found and fixed a memory leak in function call; it's 37485587Sobrien been there since functions were added ~1983. thanks to 37585587Sobrien jon bentley for the test case that found it. 37685587Sobrien 37785587Sobrien added test in envinit to catch environment "variables" with 378146299Sru names beginning with '='; thanks to Berend Hasselman. 37985587Sobrien 38085587SobrienJul 28, 1999: 38185587Sobrien added test in defn() to catch function foo(foo), which 38285587Sobrien otherwise recurses until core dump. thanks to arnold 38385587Sobrien robbins for noticing this. 38485587Sobrien 38585587SobrienJun 20, 1999: 38685587Sobrien added *bp in gettok in lex.c; appears possible to exit function 38785587Sobrien without terminating the string. thanks to russ cox. 38885587Sobrien 38985587SobrienJun 2, 1999: 39085587Sobrien added function stdinit() to run to initialize files[] array, 39185587Sobrien in case stdin, etc., are not constants; some compilers care. 39285587Sobrien 39385587SobrienMay 10, 1999: 39485587Sobrien replaced the ERROR ... FATAL, etc., macros with functions 39585587Sobrien based on vprintf, to avoid problems caused by overrunning 39685587Sobrien fixed-size errbuf array. thanks to ralph corderoy for the 39785587Sobrien impetus, and for pointing out a string termination bug in 39885587Sobrien qstring as well. 39985587Sobrien 40085587SobrienApr 21, 1999: 40185587Sobrien fixed bug that caused occasional core dumps with commandline 40285587Sobrien variable with value ending in \. (thanks to nelson beebe for 40385587Sobrien the test case.) 40485587Sobrien 40585587SobrienApr 16, 1999: 40685587Sobrien with code kindly provided by Bruce Lilly, awk now parses 40785587Sobrien /=/ and similar constructs more sensibly in more places. 40885587Sobrien Bruce also provided some helpful test cases. 40985587Sobrien 41085587SobrienApr 5, 1999: 41185587Sobrien changed true/false to True/False in run.c to make it 41285587Sobrien easier to compile with C++. Added some casts on malloc 41385587Sobrien and realloc to be honest about casts; ditto. changed 41485587Sobrien ltype int to long in struct rrow to reduce some 64-bit 41585587Sobrien complaints; other changes scattered throughout for the 41685587Sobrien same purpose. thanks to Nelson Beebe for these portability 41785587Sobrien improvements. 41885587Sobrien 41985587Sobrien removed some horrible pointer-int casting in b.c and elsewhere 42085587Sobrien by adding ptoi and itonp to localize the casts, which are 42185587Sobrien all benign. fixed one incipient bug that showed up on sgi 42285587Sobrien in 64-bit mode. 42385587Sobrien 42485587Sobrien reset lineno for new source file; include filename in error 42585587Sobrien message. also fixed line number error in continuation lines. 42685587Sobrien (thanks to Nelson Beebe for both of these.) 42785587Sobrien 42885587SobrienMar 24, 1999: 42985587Sobrien Nelson Beebe notes that irix 5.3 yacc dies with a bogus 43085587Sobrien error; use a newer version or switch to bison, since sgi 43185587Sobrien is unlikely to fix it. 43285587Sobrien 43385587SobrienMar 5, 1999: 43485587Sobrien changed isnumber to is_number to avoid the problem caused by 43585587Sobrien versions of ctype.h that include the name isnumber. 43685587Sobrien 43785587Sobrien distribution now includes a script for building on a Mac, 43885587Sobrien thanks to Dan Allen. 43985587Sobrien 44085587SobrienFeb 20, 1999: 44185587Sobrien fixed memory leaks in run.c (call) and tran.c (setfval). 44285587Sobrien thanks to Stephen Nutt for finding these and providing the fixes. 44385587Sobrien 44485587SobrienJan 13, 1999: 44585587Sobrien replaced srand argument by (unsigned int) in run.c; 44685587Sobrien avoids problem on Mac and potentially on Unix & Windows. 44785587Sobrien thanks to Dan Allen. 44885587Sobrien 44985587Sobrien added a few (int) casts to silence useless compiler warnings. 45085587Sobrien e.g., errorflag= in run.c jump(). 45185587Sobrien 45285587Sobrien added proctab.c to the bundle outout; one less thing 45385587Sobrien to have to compile out of the box. 45485587Sobrien 45585587Sobrien added calls to _popen and _pclose to the win95 stub for 45685587Sobrien pipes (thanks to Steve Adams for this helpful suggestion). 45785587Sobrien seems to work, though properties are not well understood 45885587Sobrien by me, and it appears that under some circumstances the 45985587Sobrien pipe output is truncated. Be careful. 46085587Sobrien 46185587SobrienOct 19, 1998: 46285587Sobrien fixed a couple of bugs in getrec: could fail to update $0 46385587Sobrien after a getline var; because inputFS wasn't initialized, 46485587Sobrien could split $0 on every character, a misleading diversion. 46585587Sobrien 46685587Sobrien fixed caching bug in makedfa: LRU was actually removing 46785587Sobrien least often used. 46885587Sobrien 46985587Sobrien thanks to ross ridge for finding these, and for providing 47085587Sobrien great bug reports. 47185587Sobrien 47285587SobrienMay 12, 1998: 47385587Sobrien fixed potential bug in readrec: might fail to update record 47485587Sobrien pointer after growing. thanks to dan levy for spotting this 47585587Sobrien and suggesting the fix. 47685587Sobrien 47785587SobrienMar 12, 1998: 47885587Sobrien added -V to print version number and die. 47985587Sobrien 48085587SobrienFeb 11, 1998: 48185587Sobrien subtle silent bug in lex.c: if the program ended with a number 48285587Sobrien longer than 1 digit, part of the input would be pushed back and 48385587Sobrien parsed again because token buffer wasn't terminated right. 48485587Sobrien example: awk 'length($0) > 10'. blush. at least i found it 48585587Sobrien myself. 48685587Sobrien 48785587SobrienAug 31, 1997: 48885587Sobrien s/adelete/awkdelete/: SGI uses this in malloc.h. 48985587Sobrien thanks to nelson beebe for pointing this one out. 49085587Sobrien 49185587SobrienAug 21, 1997: 49285587Sobrien fixed some bugs in sub and gsub when replacement includes \\. 49385587Sobrien this is a dark, horrible corner, but at least now i believe that 49485587Sobrien the behavior is the same as gawk and the intended posix standard. 49585587Sobrien thanks to arnold robbins for advice here. 49685587Sobrien 49785587SobrienAug 9, 1997: 49885587Sobrien somewhat regretfully, replaced the ancient lex-based lexical 49985587Sobrien analyzer with one written in C. it's longer, generates less code, 50085587Sobrien and more portable; the old one depended too much on mysterious 50185587Sobrien properties of lex that were not preserved in other environments. 50285587Sobrien in theory these recognize the same language. 50385587Sobrien 50485587Sobrien now using strtod to test whether a string is a number, instead of 50585587Sobrien the convoluted original function. should be more portable and 50685587Sobrien reliable if strtod is implemented right. 50785587Sobrien 50885587Sobrien removed now-pointless optimization in makefile that tries to avoid 50985587Sobrien recompilation when awkgram.y is changed but symbols are not. 51085587Sobrien 51185587Sobrien removed most fixed-size arrays, though a handful remain, some 51285587Sobrien of which are unchecked. you have been warned. 51385587Sobrien 51485587SobrienAug 4, 1997: 51585587Sobrien with some trepidation, replaced the ancient code that managed 51685587Sobrien fields and $0 in fixed-size arrays with arrays that grow on 51785587Sobrien demand. there is still some tension between trying to make this 51885587Sobrien run fast and making it clean; not sure it's right yet. 51985587Sobrien 52085587Sobrien the ill-conceived -mr and -mf arguments are now useful only 52185587Sobrien for debugging. previous dynamic string code removed. 52285587Sobrien 52385587Sobrien numerous other minor cleanups along the way. 52485587Sobrien 52585587SobrienJul 30, 1997: 52685587Sobrien using code provided by dan levy (to whom profuse thanks), replaced 52785587Sobrien fixed-size arrays and awkward kludges by a fairly uniform mechanism 52885587Sobrien to grow arrays as needed for printf, sub, gsub, etc. 52985587Sobrien 53085587SobrienJul 23, 1997: 53185587Sobrien falling off the end of a function returns "" and 0, not 0. 53285587Sobrien thanks to arnold robbins. 53385587Sobrien 53485587SobrienJun 17, 1997: 53585587Sobrien replaced several fixed-size arrays by dynamically-created ones 53685587Sobrien in run.c; added overflow tests to some previously unchecked cases. 53785587Sobrien getline, toupper, tolower. 53885587Sobrien 53985587Sobrien getline code is still broken in that recursive calls may wind 54085587Sobrien up using the same space. [fixed later] 54185587Sobrien 54285587Sobrien increased RECSIZE to 8192 to push problems further over the horizon. 54385587Sobrien 54485587Sobrien added \r to \n as input line separator for programs, not data. 54585587Sobrien damn CRLFs. 54685587Sobrien 54785587Sobrien modified format() to permit explicit printf("%c", 0) to include 54885587Sobrien a null byte in output. thanks to ken stailey for the fix. 54985587Sobrien 55085587Sobrien added a "-safe" argument that disables file output (print >, 55185587Sobrien print >>), process creation (cmd|getline, print |, system), and 55285587Sobrien access to the environment (ENVIRON). this is a first approximation 55385587Sobrien to a "safe" version of awk, but don't rely on it too much. thanks 55485587Sobrien to joan feigenbaum and matt blaze for the inspiration long ago. 55585587Sobrien 55685587SobrienJul 8, 1996: 55785587Sobrien fixed long-standing bug in sub, gsub(/a/, "\\\\&"); thanks to 55885587Sobrien ralph corderoy. 55985587Sobrien 56085587SobrienJun 29, 1996: 56185587Sobrien fixed awful bug in new field splitting; didn't get all the places 56285587Sobrien where input was done. 56385587Sobrien 56485587SobrienJun 28, 1996: 56585587Sobrien changed field-splitting to conform to posix definition: fields are 56685587Sobrien split using the value of FS at the time of input; it used to be 56785587Sobrien the value when the field or NF was first referred to, a much less 56885587Sobrien predictable definition. thanks to arnold robbins for encouragement 56985587Sobrien to do the right thing. 57085587Sobrien 57185587SobrienMay 28, 1996: 57285587Sobrien fixed appalling but apparently unimportant bug in parsing octal 57385587Sobrien numbers in reg exprs. 57485587Sobrien 57585587Sobrien explicit hex in reg exprs now limited to 2 chars: \xa, \xaa. 57685587Sobrien 57785587SobrienMay 27, 1996: 57885587Sobrien cleaned up some declarations so gcc -Wall is now almost silent. 57985587Sobrien 58085587Sobrien makefile now includes backup copies of ytab.c and lexyy.c in case 58185587Sobrien one makes before looking; it also avoids recreating lexyy.c unless 58285587Sobrien really needed. 58385587Sobrien 58485587Sobrien s/aprintf/awkprint, s/asprintf/awksprintf/ to avoid some name clashes 58585587Sobrien with unwisely-written header files. 58685587Sobrien 58785587Sobrien thanks to jeffrey friedl for several of these. 58885587Sobrien 58985587SobrienMay 26, 1996: 59085587Sobrien an attempt to rationalize the (unsigned) char issue. almost all 59185587Sobrien instances of unsigned char have been removed; the handful of places 59285587Sobrien in b.c where chars are used as table indices have been hand-crafted. 59385587Sobrien added some latin-1 tests to the regression, but i'm not confident; 59485587Sobrien none of my compilers seem to care much. thanks to nelson beebe for 59585587Sobrien pointing out some others that do care. 59685587Sobrien 59785587SobrienMay 2, 1996: 59885587Sobrien removed all register declarations. 59985587Sobrien 60085587Sobrien enhanced split(), as in gawk, etc: split(s, a, "") splits s into 60185587Sobrien a[1]...a[length(s)] with each character a single element. 60285587Sobrien 60385587Sobrien made the same changes for field-splitting if FS is "". 60485587Sobrien 60585587Sobrien added nextfile, as in gawk: causes immediate advance to next 60685587Sobrien input file. (thanks to arnold robbins for inspiration and code). 60785587Sobrien 60885587Sobrien small fixes to regexpr code: can now handle []], [[], and 60985587Sobrien variants; [] is now a syntax error, rather than matching 61085587Sobrien everything; [z-a] is now empty, not z. far from complete 61185587Sobrien or correct, however. (thanks to jeffrey friedl for pointing out 61285587Sobrien some awful behaviors.) 61385587Sobrien 61485587SobrienApr 29, 1996: 615146299Sru replaced uchar by uschar everywhere; apparently some compilers 61685587Sobrien usurp this name and this causes conflicts. 61785587Sobrien 61885587Sobrien fixed call to time in run.c (bltin); arg is time_t *. 61985587Sobrien 62085587Sobrien replaced horrible pointer/long punning in b.c by a legitimate 62185587Sobrien union. should be safer on 64-bit machines and cleaner everywhere. 62285587Sobrien (thanks to nelson beebe for pointing out some of these problems.) 62385587Sobrien 62485587Sobrien replaced nested comments by #if 0...#endif in run.c, lib.c. 62585587Sobrien 62685587Sobrien removed getsval, setsval, execute macros from run.c and lib.c. 62785587Sobrien machines are 100x faster than they were when these macros were 62885587Sobrien first used. 62985587Sobrien 63085587Sobrien revised filenames: awk.g.y => awkgram.y, awk.lx.l => awklex.l, 63185587Sobrien y.tab.[ch] => ytab.[ch], lex.yy.c => lexyy.c, all in the aid of 63285587Sobrien portability to nameless systems. 63385587Sobrien 63485587Sobrien "make bundle" now includes yacc and lex output files for recipients 63585587Sobrien who don't have yacc or lex. 63685587Sobrien 63785587SobrienAug 15, 1995: 63885587Sobrien initialized Cells in setsymtab more carefully; some fields 63985587Sobrien were not set. (thanks to purify, all of whose complaints i 64085587Sobrien think i now understand.) 64185587Sobrien 64285587Sobrien fixed at least one error in gsub that looked at -1-th element 64385587Sobrien of an array when substituting for a null match (e.g., $). 64485587Sobrien 64585587Sobrien delete arrayname is now legal; it clears the elements but leaves 64685587Sobrien the array, which may not be the right behavior. 64785587Sobrien 64885587Sobrien modified makefile: my current make can't cope with the test used 64985587Sobrien to avoid unnecessary yacc invocations. 65085587Sobrien 65185587SobrienJul 17, 1995: 65285587Sobrien added dynamically growing strings to awk.lx.l and b.c 65385587Sobrien to permit regular expressions to be much bigger. 65485587Sobrien the state arrays can still overflow. 65585587Sobrien 65685587SobrienAug 24, 1994: 65785587Sobrien detect duplicate arguments in function definitions (mdm). 65885587Sobrien 65985587SobrienMay 11, 1994: 66085587Sobrien trivial fix to printf to limit string size in sub(). 66185587Sobrien 66285587SobrienApr 22, 1994: 66385587Sobrien fixed yet another subtle self-assignment problem: 66485587Sobrien $1 = $2; $1 = $1 clobbered $1. 66585587Sobrien 66685587Sobrien Regression tests now use private echo, to avoid quoting problems. 66785587Sobrien 66885587SobrienFeb 2, 1994: 66985587Sobrien changed error() to print line number as %d, not %g. 67085587Sobrien 67185587SobrienJul 23, 1993: 67285587Sobrien cosmetic changes: increased sizes of some arrays, 67385587Sobrien reworded some error messages. 67485587Sobrien 67585587Sobrien added CONVFMT as in posix (just replaced OFMT in getsval) 67685587Sobrien 67785587Sobrien FILENAME is now "" until the first thing that causes a file 67885587Sobrien to be opened. 67985587Sobrien 68085587SobrienNov 28, 1992: 68185587Sobrien deleted yyunput and yyoutput from proto.h; 68285587Sobrien different versions of lex give these different declarations. 68385587Sobrien 68485587SobrienMay 31, 1992: 68585587Sobrien added -mr N and -mf N options: more record and fields. 68685587Sobrien these really ought to adjust automatically. 68785587Sobrien 68885587Sobrien cleaned up some error messages; "out of space" now means 68985587Sobrien malloc returned NULL in all cases. 69085587Sobrien 69185587Sobrien changed rehash so that if it runs out, it just returns; 69285587Sobrien things will continue to run slow, but maybe a bit longer. 69385587Sobrien 69485587SobrienApr 24, 1992: 69585587Sobrien remove redundant close of stdin when using -f -. 69685587Sobrien 69785587Sobrien got rid of core dump with -d; awk -d just prints date. 69885587Sobrien 69985587SobrienApr 12, 1992: 70085587Sobrien added explicit check for /dev/std(in,out,err) in redirection. 70185587Sobrien unlike gawk, no /dev/fd/n yet. 70285587Sobrien 70385587Sobrien added (file/pipe) builtin. hard to test satisfactorily. 70485587Sobrien not posix. 70585587Sobrien 70685587SobrienFeb 20, 1992: 70785587Sobrien recompile after abortive changes; should be unchanged. 70885587Sobrien 70985587SobrienDec 2, 1991: 71085587Sobrien die-casting time: converted to ansi C, installed that. 71185587Sobrien 71285587SobrienNov 30, 1991: 71385587Sobrien fixed storage leak in freefa, failing to recover [N]CCL. 71485587Sobrien thanks to Bill Jones (jones@cs.usask.ca) 71585587Sobrien 71685587SobrienNov 19, 1991: 71785587Sobrien use RAND_MAX instead of literal in builtin(). 71885587Sobrien 71985587SobrienNov 12, 1991: 72085587Sobrien cranked up some fixed-size arrays in b.c, and added a test for 72185587Sobrien overflow in penter. thanks to mark larsen. 72285587Sobrien 72385587SobrienSep 24, 1991: 72485587Sobrien increased buffer in gsub. a very crude fix to a general problem. 72585587Sobrien and again on Sep 26. 72685587Sobrien 72785587SobrienAug 18, 1991: 72885587Sobrien enforce variable name syntax for commandline variables: has to 72985587Sobrien start with letter or _. 73085587Sobrien 73185587SobrienJul 27, 1991: 73285587Sobrien allow newline after ; in for statements. 73385587Sobrien 73485587SobrienJul 21, 1991: 73585587Sobrien fixed so that in self-assignment like $1=$1, side effects 73685587Sobrien like recomputing $0 take place. (this is getting subtle.) 73785587Sobrien 73885587SobrienJun 30, 1991: 73985587Sobrien better test for detecting too-long output record. 74085587Sobrien 74185587SobrienJun 2, 1991: 74285587Sobrien better defense against very long printf strings. 74385587Sobrien made break and continue illegal outside of loops. 74485587Sobrien 74585587SobrienMay 13, 1991: 74685587Sobrien removed extra arg on gettemp, tempfree. minor error message rewording. 74785587Sobrien 74885587SobrienMay 6, 1991: 74985587Sobrien fixed silly bug in hex parsing in hexstr(). 75085587Sobrien removed an apparently unnecessary test in isnumber(). 75185587Sobrien warn about weird printf conversions. 75285587Sobrien fixed unchecked array overwrite in relex(). 75385587Sobrien 75485587Sobrien changed for (i in array) to access elements in sorted order. 75585587Sobrien then unchanged it -- it really does run slower in too many cases. 75685587Sobrien left the code in place, commented out. 75785587Sobrien 75885587SobrienFeb 10, 1991: 75985587Sobrien check error status on all writes, to avoid banging on full disks. 76085587Sobrien 76185587SobrienJan 28, 1991: 76285587Sobrien awk -f - reads the program from stdin. 76385587Sobrien 76485587SobrienJan 11, 1991: 76585587Sobrien failed to set numeric state on $0 in cmd|getline context in run.c. 76685587Sobrien 76785587SobrienNov 2, 1990: 76885587Sobrien fixed sleazy test for integrality in getsval; use modf. 76985587Sobrien 77085587SobrienOct 29, 1990: 77185587Sobrien fixed sleazy buggy code in lib.c that looked (incorrectly) for 77285587Sobrien too long input lines. 77385587Sobrien 77485587SobrienOct 14, 1990: 77585587Sobrien fixed the bug on p. 198 in which it couldn't deduce that an 77685587Sobrien argument was an array in some contexts. replaced the error 77785587Sobrien message in intest() by code that damn well makes it an array. 77885587Sobrien 77985587SobrienOct 8, 1990: 78085587Sobrien fixed horrible bug: types and values were not preserved in 78185587Sobrien some kinds of self-assignment. (in assign().) 78285587Sobrien 78385587SobrienAug 24, 1990: 78485587Sobrien changed NCHARS to 256 to handle 8-bit characters in strings 78585587Sobrien presented to match(), etc. 78685587Sobrien 78785587SobrienJun 26, 1990: 78885587Sobrien changed struct rrow (awk.h) to use long instead of int for lval, 78985587Sobrien since cfoll() stores a pointer in it. now works better when int's 79085587Sobrien are smaller than pointers! 79185587Sobrien 79285587SobrienMay 6, 1990: 79385587Sobrien AVA fixed the grammar so that ! is uniformly of the same precedence as 79485587Sobrien unary + and -. This renders illegal some constructs like !x=y, which 79585587Sobrien now has to be parenthesized as !(x=y), and makes others work properly: 79685587Sobrien !x+y is (!x)+y, and x!y is x !y, not two pattern-action statements. 79785587Sobrien (These problems were pointed out by Bob Lenk of Posix.) 79885587Sobrien 79985587Sobrien Added \x to regular expressions (already in strings). 80085587Sobrien Limited octal to octal digits; \8 and \9 are not octal. 80185587Sobrien Centralized the code for parsing escapes in regular expressions. 80285587Sobrien Added a bunch of tests to T.re and T.sub to verify some of this. 80385587Sobrien 80485587SobrienFeb 9, 1990: 80585587Sobrien fixed null pointer dereference bug in main.c: -F[nothing]. sigh. 80685587Sobrien 80785587Sobrien restored srand behavior: it returns the current seed. 80885587Sobrien 80985587SobrienJan 18, 1990: 81085587Sobrien srand now returns previous seed value (0 to start). 81185587Sobrien 81285587SobrienJan 5, 1990: 81385587Sobrien fix potential problem in tran.c -- something was freed, 81485587Sobrien then used in freesymtab. 81585587Sobrien 81685587SobrienOct 18, 1989: 81785587Sobrien another try to get the max number of open files set with 81885587Sobrien relatively machine-independent code. 81985587Sobrien 82085587Sobrien small fix to input() in case of multiple reads after EOF. 82185587Sobrien 82285587SobrienOct 11, 1989: 82385587Sobrien FILENAME is now defined in the BEGIN block -- too many old 82485587Sobrien programs broke. 82585587Sobrien 82685587Sobrien "-" means stdin in getline as well as on the commandline. 82785587Sobrien 82885587Sobrien added a bunch of casts to the code to tell the truth about 82985587Sobrien char * vs. unsigned char *, a right royal pain. added a 83085587Sobrien setlocale call to the front of main, though probably no one 83185587Sobrien has it usefully implemented yet. 83285587Sobrien 83385587SobrienAug 24, 1989: 83485587Sobrien removed redundant relational tests against nullnode if parse 83585587Sobrien tree already had a relational at that point. 83685587Sobrien 83785587SobrienAug 11, 1989: 83885587Sobrien fixed bug: commandline variable assignment has to look like 83985587Sobrien var=something. (consider the man page for =, in file =.1) 84085587Sobrien 84185587Sobrien changed number of arguments to functions to static arrays 84285587Sobrien to avoid repeated malloc calls. 84385587Sobrien 84485587SobrienAug 2, 1989: 84585587Sobrien restored -F (space) separator 84685587Sobrien 84785587SobrienJul 30, 1989: 84885587Sobrien added -v x=1 y=2 ... for immediate commandline variable assignment; 84985587Sobrien done before the BEGIN block for sure. they have to precede the 85085587Sobrien program if the program is on the commandline. 85185587Sobrien Modified Aug 2 to require a separate -v for each assignment. 85285587Sobrien 85385587SobrienJul 10, 1989: 85485587Sobrien fixed ref-thru-zero bug in environment code in tran.c 85585587Sobrien 85685587SobrienJun 23, 1989: 85785587Sobrien add newline to usage message. 85885587Sobrien 85985587SobrienJun 14, 1989: 86085587Sobrien added some missing ansi printf conversion letters: %i %X %E %G. 86185587Sobrien no sensible meaning for h or L, so they may not do what one expects. 86285587Sobrien 86385587Sobrien made %* conversions work. 86485587Sobrien 86585587Sobrien changed x^y so that if n is a positive integer, it's done 86685587Sobrien by explicit multiplication, thus achieving maximum accuracy. 86785587Sobrien (this should be done by pow() but it seems not to be locally.) 86885587Sobrien done to x ^= y as well. 86985587Sobrien 87085587SobrienJun 4, 1989: 87185587Sobrien ENVIRON array contains environment: if shell variable V=thing, 87285587Sobrien ENVIRON["V"] is "thing" 87385587Sobrien 87485587Sobrien multiple -f arguments permitted. error reporting is naive. 87585587Sobrien (they were permitted before, but only the last was used.) 87685587Sobrien 87785587Sobrien fixed a really stupid botch in the debugging macro dprintf 87885587Sobrien 87985587Sobrien fixed order of evaluation of commandline assignments to match 88085587Sobrien what the book claims: an argument of the form x=e is evaluated 88185587Sobrien at the time it would have been opened if it were a filename (p 63). 88285587Sobrien this invalidates the suggested answer to ex 4-1 (p 195). 88385587Sobrien 88485587Sobrien removed some code that permitted -F (space) fieldseparator, 88585587Sobrien since it didn't quite work right anyway. (restored aug 2) 88685587Sobrien 88785587SobrienApr 27, 1989: 88885587Sobrien Line number now accumulated correctly for comment lines. 88985587Sobrien 89085587SobrienApr 26, 1989: 89185587Sobrien Debugging output now includes a version date, 89285587Sobrien if one compiles it into the source each time. 89385587Sobrien 89485587SobrienApr 9, 1989: 89585587Sobrien Changed grammar to prohibit constants as 3rd arg of sub and gsub; 89685587Sobrien prevents class of overwriting-a-constant errors. (Last one?) 89785587Sobrien This invalidates the "banana" example on page 43 of the book. 89885587Sobrien 89985587Sobrien Added \a ("alert"), \v (vertical tab), \xhhh (hexadecimal), 90085587Sobrien as in ANSI, for strings. Rescinded the sloppiness that permitted 90185587Sobrien non-octal digits in \ooo. Warning: not all compilers and libraries 90285587Sobrien will be able to deal with \x correctly. 90385587Sobrien 90485587SobrienJan 9, 1989: 90585587Sobrien Fixed bug that caused tempcell list to contain a duplicate. 90685587Sobrien The fix is kludgy. 90785587Sobrien 90885587SobrienDec 17, 1988: 90985587Sobrien Catches some more commandline errors in main. 91085587Sobrien Removed redundant decl of modf in run.c (confuses some compilers). 91185587Sobrien Warning: there's no single declaration of malloc, etc., in awk.h 91285587Sobrien that seems to satisfy all compilers. 91385587Sobrien 91485587SobrienDec 7, 1988: 91585587Sobrien Added a bit of code to error printing to avoid printing nulls. 91685587Sobrien (Not clear that it actually would.) 91785587Sobrien 91885587SobrienNov 27, 1988: 91985587Sobrien With fear and trembling, modified the grammar to permit 92085587Sobrien multiple pattern-action statements on one line without 92185587Sobrien an explicit separator. By definition, this capitulation 92285587Sobrien to the ghost of ancient implementations remains undefined 92385587Sobrien and thus subject to change without notice or apology. 92485587Sobrien DO NOT COUNT ON IT. 92585587Sobrien 92685587SobrienOct 30, 1988: 92785587Sobrien Fixed bug in call() that failed to recover storage. 92885587Sobrien 92985587Sobrien A warning is now generated if there are more arguments 93085587Sobrien in the call than in the definition (in lieu of fixing 93185587Sobrien another storage leak). 93285587Sobrien 93385587SobrienOct 20, 1988: 93485587Sobrien Fixed %c: if expr is numeric, use numeric value; 93585587Sobrien otherwise print 1st char of string value. still 93685587Sobrien doesn't work if the value is 0 -- won't print \0. 93785587Sobrien 93885587Sobrien Added a few more checks for running out of malloc. 93985587Sobrien 94085587SobrienOct 12, 1988: 94185587Sobrien Fixed bug in call() that freed local arrays twice. 94285587Sobrien 94385587Sobrien Fixed to handle deletion of non-existent array right; 94485587Sobrien complains about attempt to delete non-array element. 94585587Sobrien 94685587SobrienSep 30, 1988: 94785587Sobrien Now guarantees to evaluate all arguments of built-in 94885587Sobrien functions, as in C; the appearance is that arguments 94985587Sobrien are evaluated before the function is called. Places 95085587Sobrien affected are sub (gsub was ok), substr, printf, and 95185587Sobrien all the built-in arithmetic functions in bltin(). 95285587Sobrien A warning is generated if a bltin() is called with 95385587Sobrien the wrong number of arguments. 95485587Sobrien 95585587Sobrien This requires changing makeprof on p167 of the book. 95685587Sobrien 95785587SobrienAug 23, 1988: 95885587Sobrien setting FILENAME in BEGIN caused core dump, apparently 95985587Sobrien because it was freeing space not allocated by malloc. 96085587Sobrien 96185587SobrienJuly 24, 1988: 96285587Sobrien fixed egregious error in toupper/tolower functions. 96385587Sobrien still subject to rescinding, however. 96485587Sobrien 96585587SobrienJuly 2, 1988: 96685587Sobrien flush stdout before opening file or pipe 96785587Sobrien 96885587SobrienJuly 2, 1988: 96985587Sobrien performance bug in b.c/cgoto(): not freeing some sets of states. 97085587Sobrien partial fix only right now, and the number of states increased 97185587Sobrien to make it less obvious. 97285587Sobrien 97385587SobrienJune 1, 1988: 97485587Sobrien check error status on close 97585587Sobrien 97685587SobrienMay 28, 1988: 97785587Sobrien srand returns seed value it's using. 97885587Sobrien see 1/18/90 97985587Sobrien 98085587SobrienMay 22, 1988: 98185587Sobrien Removed limit on depth of function calls. 98285587Sobrien 98385587SobrienMay 10, 1988: 98485587Sobrien Fixed lib.c to permit _ in commandline variable names. 98585587Sobrien 98685587SobrienMar 25, 1988: 98785587Sobrien main.c fixed to recognize -- as terminator of command- 98885587Sobrien line options. Illegal options flagged. 98985587Sobrien Error reporting slightly cleaned up. 99085587Sobrien 99185587SobrienDec 2, 1987: 99285587Sobrien Newer C compilers apply a strict scope rule to extern 99385587Sobrien declarations within functions. Two extern declarations in 99485587Sobrien lib.c and tran.c have been moved to obviate this problem. 99585587Sobrien 99685587SobrienOct xx, 1987: 99785587Sobrien Reluctantly added toupper and tolower functions. 99885587Sobrien Subject to rescinding without notice. 99985587Sobrien 100085587SobrienSep 17, 1987: 100185587Sobrien Error-message printer had printf(s) instead of 100285587Sobrien printf("%s",s); got core dumps when the message 100385587Sobrien included a %. 100485587Sobrien 100585587SobrienSep 12, 1987: 100685587Sobrien Very long printf strings caused core dump; 100785587Sobrien fixed aprintf, asprintf, format to catch them. 100885587Sobrien Can still get a core dump in printf itself. 100985587Sobrien 101085587Sobrien 1011