FIXES revision 224731
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 28224731SruAug 7, 2011: 29224731Sru split(s, a, //) now behaves the same as split(s, a, "") 30224731Sru 31224731SruJun 12, 2011: 32224731Sru /pat/, \n /pat/ {...} is now legal, though bad style to use. 33224731Sru 34224731Sru added checks to new -v code that permits -vnospace; thanks to 35224731Sru ruslan ermilov for spotting this and providing the patch. 36224731Sru 37224731Sru removed fixed limit on number of open files; thanks to aleksey 38224731Sru cheusov and christos zoulos. 39224731Sru 40224731Sru fixed day 1 bug that resurrected deleted elements of ARGV when 41224731Sru used as filenames (in lib.c). 42224731Sru 43224731Sru minor type fiddles to make gcc -Wall -pedantic happier (but not 44224731Sru totally so); turned on -fno-strict-aliasing in makefile. 45224731Sru 46221533SruMay 6, 2011: 47221533Sru added #ifdef for isblank. 48221533Sru now allows -ffoo as well as -f foo arguments. 49221533Sru (thanks, ruslan) 50221533Sru 51221381SruMay 1, 2011: 52221381Sru after advice from todd miller, kevin lo, ruslan ermilov, 53221381Sru and arnold robbins, changed srand() to return the previous 54221381Sru seed (which is 1 on the first call of srand). the seed is 55221381Sru an Awkfloat internally though converted to unsigned int to 56221381Sru pass to the library srand(). thanks, everyone. 57221381Sru 58221381Sru fixed a subtle (and i hope low-probability) overflow error 59221381Sru in fldbld, by adding space for one extra \0. thanks to 60221381Sru robert bassett for spotting this one and providing a fix. 61221381Sru 62221381Sru removed the files related to compilation on windows. i no 63221381Sru longer have anything like a current windows environment, so 64221381Sru i can't test any of it. 65221381Sru 66221381SruMay 23, 2010: 67221381Sru fixed long-standing overflow bug in run.c; many thanks to 68221381Sru nelson beebe for spotting it and providing the fix. 69221381Sru 70221381Sru fixed bug that didn't parse -vd=1 properly; thanks to santiago 71221381Sru vila for spotting it. 72221381Sru 73221381SruFeb 8, 2010: 74221381Sru i give up. replaced isblank with isspace in b.c; there are 75221381Sru no consistent header files. 76221381Sru 77201951SruNov 26, 2009: 78201951Sru fixed a long-standing issue with when FS takes effect. a 79201951Sru change to FS is now noticed immediately for subsequent splits. 80201951Sru 81201951Sru changed the name getline() to awkgetline() to avoid yet another 82201951Sru name conflict somewhere. 83201951Sru 84201951SruFeb 11, 2009: 85201951Sru temporarily for now defined HAS_ISBLANK, since that seems to 86201951Sru be the best way through the thicket. isblank arrived in C99, 87201951Sru but seems to be arriving at different systems at different 88201951Sru times. 89201951Sru 90201951SruOct 8, 2008: 91201951Sru fixed typo in b.c that set tmpvec wrongly. no one had ever 92201951Sru run into the problem, apparently. thanks to alistair crooks. 93201951Sru 94172958SobrienOct 23, 2007: 95172958Sobrien minor fix in lib.c: increase inputFS to 100, change malloc 96172958Sobrien for fields to n+1. 97172958Sobrien 98172958Sobrien fixed memory fault caused by out of order test in setsval. 99172958Sobrien 100172958Sobrien thanks to david o'brien, freebsd, for both fixes. 101172958Sobrien 102170331SrafanMay 1, 2007: 103170331Srafan fiddle in makefile to fix for BSD make; thanks to igor sobrado. 104170331Srafan 105170331SrafanMar 31, 2007: 106170331Srafan fixed some null pointer refs calling adjbuf. 107170331Srafan 108170331SrafanFeb 21, 2007: 109170331Srafan fixed a bug in matching the null RE in sub and gsub. thanks to al aho 110170331Srafan who actually did the fix (in b.c), and to wolfgang seeberg for finding 111170331Srafan it and providing a very compact test case. 112170331Srafan 113170331Srafan fixed quotation in b.c; thanks to Hal Pratt and the Princeton Dante 114170331Srafan Project. 115170331Srafan 116170331Srafan removed some no-effect asserts in run.c. 117170331Srafan 118170331Srafan fiddled maketab.c to not complain about bison-generated values. 119170331Srafan 120170331Srafan removed the obsolete -V argument; fixed --version to print the 121170331Srafan version and exit. 122170331Srafan 123170331Srafan fixed wording and an outright error in the usage message; thanks to igor 124170331Srafan sobrado and jason mcintyre. 125170331Srafan 126170331Srafan fixed a bug in -d that caused core dump if no program followed. 127170331Srafan 128170331SrafanJan 1, 2007: 129170331Srafan dropped mac.code from makefile; there are few non-MacOSX 130170331Srafan mac's these days. 131170331Srafan 132170331SrafanJan 17, 2006: 133170331Srafan system() not flagged as unsafe in the unadvertised -safe option. 134170331Srafan found it while enhancing tests before shipping the ;login: article. 135170331Srafan practice what you preach. 136170331Srafan 137170331Srafan removed the 9-years-obsolete -mr and -mf flags. 138170331Srafan 139170331Srafan added -version and --version options. 140170331Srafan 141170331Srafan core dump on linux with BEGIN {nextfile}, now fixed. 142170331Srafan 143170331Srafan removed some #ifdef's in run.c and lex.c that appear to no 144170331Srafan longer be necessary. 145170331Srafan 146146299SruApr 24, 2005: 147146299Sru modified lib.c so that values of $0 et al are preserved in the END 148146299Sru block, apparently as required by posix. thanks to havard eidnes 149146299Sru for the report and code. 150146299Sru 151146299SruJan 14, 2005: 152146299Sru fixed infinite loop in parsing, originally found by brian tsang. 153146299Sru thanks to arnold robbins for a suggestion that started me 154146299Sru rethinking it. 155146299Sru 156146299SruDec 31, 2004: 157146299Sru prevent overflow of -f array in main, head off potential error in 158146299Sru call of SYNTAX(), test malloc return in lib.c, all with thanks to 159146299Sru todd miller. 160146299Sru 161146299SruDec 22, 2004: 162146299Sru cranked up size of NCHARS; coverity thinks it can be overrun with 163146299Sru smaller size, and i think that's right. added some assertions to b.c 164146299Sru to catch places where it might overrun. the RE code is still fragile. 165146299Sru 166146299SruDec 5, 2004: 167146299Sru fixed a couple of overflow problems with ridiculous field numbers: 168146299Sru e.g., print $(2^32-1). thanks to ruslan ermilov, giorgos keramidas 169146299Sru and david o'brien at freebsd.org for patches. this really should 170146299Sru be re-done from scratch. 171146299Sru 172146299SruNov 21, 2004: 173146299Sru fixed another 25-year-old RE bug, in split. it's another failure 174146299Sru to (re-)initialize. thanks to steve fisher for spotting this and 175146299Sru providing a good test case. 176146299Sru 177125601SruNov 22, 2003: 178125601Sru fixed a bug in regular expressions that dates (so help me) from 1977; 179125601Sru it's been there from the beginning. an anchored longest match that 180125601Sru was longer than the number of states triggered a failure to initialize 181125601Sru the machine properly. many thanks to moinak ghosh for not only finding 182125601Sru this one but for providing a fix, in some of the most mysterious 183125601Sru code known to man. 184125601Sru 185125601Sru fixed a storage leak in call() that appears to have been there since 186125601Sru 1983 or so -- a function without an explicit return that assigns a 187125601Sru string to a parameter leaked a Cell. thanks to moinak ghosh for 188125601Sru spotting this very subtle one. 189125601Sru 190125601SruJul 31, 2003: 191125601Sru fixed, thanks to andrey chernov and ruslan ermilov, a bug in lex.c 192125601Sru that mis-handled the character 255 in input. (it was being compared 193125601Sru to EOF with a signed comparison.) 194125601Sru 195118194SruJul 29, 2003: 196118194Sru fixed (i think) the long-standing botch that included the beginning of 197118194Sru line state ^ for RE's in the set of valid characters; this led to a 198118194Sru variety of odd problems, including failure to properly match certain 199118194Sru regular expressions in non-US locales. thanks to ruslan for keeping 200118194Sru at this one. 201118194Sru 202118194SruJul 28, 2003: 203118194Sru n-th try at getting internationalization right, with thanks to volker 204118194Sru kiefel, arnold robbins and ruslan ermilov for advice, though they 205118194Sru should not be blamed for the outcome. according to posix, "." is the 206118194Sru radix character in programs and command line arguments regardless of 207118194Sru the locale; otherwise, the locale should prevail for input and output 208118194Sru of numbers. so it's intended to work that way. 209118194Sru 210118194Sru i have rescinded the attempt to use strcoll in expanding shorthands in 211118194Sru regular expressions (cclenter). its properties are much too 212118194Sru surprising; for example [a-c] matches aAbBc in locale en_US but abBcC 213118194Sru in locale fr_CA. i can see how this might arise by implementation 214118194Sru but i cannot explain it to a human user. (this behavior can be seen 215118194Sru in gawk as well; we're leaning on the same library.) 216118194Sru 217118194Sru the issue appears to be that strcoll is meant for sorting, where 218118194Sru merging upper and lower case may make sense (though note that unix 219118194Sru sort does not do this by default either). it is not appropriate 220118194Sru for regular expressions, where the goal is to match specific 221118194Sru patterns of characters. in any case, the notations [:lower:], etc., 222118194Sru are available in awk, and they are more likely to work correctly in 223118194Sru most locales. 224118194Sru 225118194Sru a moratorium is hereby declared on internationalization changes. 226118194Sru i apologize to friends and colleagues in other parts of the world. 227118194Sru i would truly like to get this "right", but i don't know what 228118194Sru that is, and i do not want to keep making changes until it's clear. 229118194Sru 230118194SruJul 4, 2003: 231118194Sru fixed bug that permitted non-terminated RE, as in "awk /x". 232118194Sru 233118194SruJun 1, 2003: 234118194Sru subtle change to split: if source is empty, number of elems 235118194Sru is always 0 and the array is not set. 236118194Sru 237118194SruMar 21, 2003: 238118194Sru added some parens to isblank, in another attempt to make things 239118194Sru internationally portable. 240118194Sru 241112336SobrienMar 14, 2003: 242112336Sobrien the internationalization changes, somewhat modified, are now 243112336Sobrien reinstated. in theory awk will now do character comparisons 244112336Sobrien and case conversions in national language, but "." will always 245112336Sobrien be the decimal point separator on input and output regardless 246112336Sobrien of national language. isblank(){} has an #ifndef. 247112336Sobrien 248112336Sobrien this no longer compiles on windows: LC_MESSAGES isn't defined 249112336Sobrien in vc6++. 250112336Sobrien 251112336Sobrien fixed subtle behavior in field and record splitting: if FS is 252112336Sobrien a single character and RS is not empty, \n is NOT a separator. 253112336Sobrien this tortuous reading is found in the awk book; behavior now 254112336Sobrien matches gawk and mawk. 255112336Sobrien 256108072SobrienDec 13, 2002: 257108072Sobrien for the moment, the internationalization changes of nov 29 are 258108072Sobrien rolled back -- programs like x = 1.2 don't work in some locales, 259108072Sobrien because the parser is expecting x = 1,2. until i understand this 260108072Sobrien better, this will have to wait. 261108072Sobrien 262107806SobrienNov 29, 2002: 263107806Sobrien modified b.c (with tiny changes in main and run) to support 264107806Sobrien locales, using strcoll and iswhatever tests for posix character 265107806Sobrien classes. thanks to ruslan ermilov (ru@freebsd.org) for code. 266107806Sobrien the function isblank doesn't seem to have propagated to any 267107806Sobrien header file near me, so it's there explicitly. not properly 268107806Sobrien tested on non-ascii character sets by me. 269107806Sobrien 270107806SobrienJun 28, 2002: 271107806Sobrien modified run/format() and tran/getsval() to do a slightly better 272107806Sobrien job on using OFMT for output from print and CONVFMT for other 273107806Sobrien number->string conversions, as promised by posix and done by 274107806Sobrien gawk and mawk. there are still places where it doesn't work 275107806Sobrien right if CONVFMT is changed; by then the STR attribute of the 276107806Sobrien variable has been irrevocably set. thanks to arnold robbins for 277107806Sobrien code and examples. 278107806Sobrien 279107806Sobrien fixed subtle bug in format that could get core dump. thanks to 280107806Sobrien Jaromir Dolecek <jdolecek@NetBSD.org> for finding and fixing. 281107806Sobrien minor cleanup in run.c / format() at the same time. 282107806Sobrien 283107806Sobrien added some tests for null pointers to debugging printf's, which 284107806Sobrien were never intended for external consumption. thanks to dave 285107806Sobrien kerns (dkerns@lucent.com) for pointing this out. 286107806Sobrien 287107806Sobrien GNU compatibility: an empty regexp matches anything (thanks to 288107806Sobrien dag-erling smorgrav, des@ofug.org). subject to reversion if 289107806Sobrien this does more harm than good. 290107806Sobrien 291107806Sobrien pervasive small changes to make things more const-correct, as 292107806Sobrien reported by gcc's -Wwrite-strings. as it says in the gcc manual, 293107806Sobrien this may be more nuisance than useful. provoked by a suggestion 294107806Sobrien and code from arnaud desitter, arnaud@nimbus.geog.ox.ac.uk 295107806Sobrien 296107806Sobrien minor documentation changes to note that this now compiles out 297107806Sobrien of the box on Mac OS X. 298107806Sobrien 29990902SdesFeb 10, 2002: 30090902Sdes changed types in posix chars structure to quiet solaris cc. 30190902Sdes 30290902SdesJan 1, 2002: 30390902Sdes fflush() or fflush("") flushes all files and pipes. 30490902Sdes 30590902Sdes length(arrayname) returns number of elements; thanks to 30690902Sdes arnold robbins for suggestion. 30790902Sdes 30890902Sdes added a makefile.win to make it easier to build on windows. 30990902Sdes based on dan allen's buildwin.bat. 31090902Sdes 31190902SdesNov 16, 2001: 31290902Sdes added support for posix character class names like [:digit:], 31390902Sdes which are not exactly shorter than [0-9] and perhaps no more 31490902Sdes portable. thanks to dag-erling smorgrav for code. 31590902Sdes 31690902SdesFeb 16, 2001: 31790902Sdes removed -m option; no longer needed, and it was actually 31890902Sdes broken (noted thanks to volker kiefel). 31990902Sdes 32090902SdesFeb 10, 2001: 32190902Sdes fixed an appalling bug in gettok: any sequence of digits, +,-, E, e, 32290902Sdes and period was accepted as a valid number if it started with a period. 32390902Sdes this would never have happened with the lex version. 32490902Sdes 32590902Sdes other 1-character botches, now fixed, include a bare $ and a 32690902Sdes bare " at the end of the input. 32790902Sdes 32890902SdesFeb 7, 2001: 32990902Sdes more (const char *) casts in b.c and tran.c to silence warnings. 33090902Sdes 33185587SobrienNov 15, 2000: 33285587Sobrien fixed a bug introduced in august 1997 that caused expressions 33385587Sobrien like $f[1] to be syntax errors. thanks to arnold robbins for 33485587Sobrien noticing this and providing a fix. 33585587Sobrien 33685587SobrienOct 30, 2000: 33785587Sobrien fixed some nextfile bugs: not handling all cases. thanks to 33885587Sobrien arnold robbins for pointing this out. new regressions added. 33985587Sobrien 34085587Sobrien close() is now a function. it returns whatever the library 34185587Sobrien fclose returns, and -1 for closing a file or pipe that wasn't 34285587Sobrien opened. 34385587Sobrien 34485587SobrienSep 24, 2000: 34585587Sobrien permit \n explicitly in character classes; won't work right 34685587Sobrien if comes in as "[\n]" but ok as /[\n]/, because of multiple 34785587Sobrien processing of \'s. thanks to arnold robbins. 34885587Sobrien 34985587SobrienJuly 5, 2000: 35085587Sobrien minor fiddles in tran.c to keep compilers happy about uschar. 35185587Sobrien thanks to norman wilson. 35285587Sobrien 35385587SobrienMay 25, 2000: 35485587Sobrien yet another attempt at making 8-bit input work, with another 35585587Sobrien band-aid in b.c (member()), and some (uschar) casts to head 35685587Sobrien off potential errors in subscripts (like isdigit). also 35785587Sobrien changed HAT to NCHARS-2. thanks again to santiago vila. 35885587Sobrien 35985587Sobrien changed maketab.c to ignore apparently out of range definitions 36085587Sobrien instead of halting; new freeBSD generates one. thanks to 36185587Sobrien jon snader <jsnader@ix.netcom.com> for pointing out the problem. 36285587Sobrien 36385587SobrienMay 2, 2000: 36485587Sobrien fixed an 8-bit problem in b.c by making several char*'s into 36585587Sobrien unsigned char*'s. not clear i have them all yet. thanks to 36685587Sobrien Santiago Vila <sanvila@unex.es> for the bug report. 36785587Sobrien 36885587SobrienApr 21, 2000: 36985587Sobrien finally found and fixed a memory leak in function call; it's 37085587Sobrien been there since functions were added ~1983. thanks to 37185587Sobrien jon bentley for the test case that found it. 37285587Sobrien 37385587Sobrien added test in envinit to catch environment "variables" with 374146299Sru names beginning with '='; thanks to Berend Hasselman. 37585587Sobrien 37685587SobrienJul 28, 1999: 37785587Sobrien added test in defn() to catch function foo(foo), which 37885587Sobrien otherwise recurses until core dump. thanks to arnold 37985587Sobrien robbins for noticing this. 38085587Sobrien 38185587SobrienJun 20, 1999: 38285587Sobrien added *bp in gettok in lex.c; appears possible to exit function 38385587Sobrien without terminating the string. thanks to russ cox. 38485587Sobrien 38585587SobrienJun 2, 1999: 38685587Sobrien added function stdinit() to run to initialize files[] array, 38785587Sobrien in case stdin, etc., are not constants; some compilers care. 38885587Sobrien 38985587SobrienMay 10, 1999: 39085587Sobrien replaced the ERROR ... FATAL, etc., macros with functions 39185587Sobrien based on vprintf, to avoid problems caused by overrunning 39285587Sobrien fixed-size errbuf array. thanks to ralph corderoy for the 39385587Sobrien impetus, and for pointing out a string termination bug in 39485587Sobrien qstring as well. 39585587Sobrien 39685587SobrienApr 21, 1999: 39785587Sobrien fixed bug that caused occasional core dumps with commandline 39885587Sobrien variable with value ending in \. (thanks to nelson beebe for 39985587Sobrien the test case.) 40085587Sobrien 40185587SobrienApr 16, 1999: 40285587Sobrien with code kindly provided by Bruce Lilly, awk now parses 40385587Sobrien /=/ and similar constructs more sensibly in more places. 40485587Sobrien Bruce also provided some helpful test cases. 40585587Sobrien 40685587SobrienApr 5, 1999: 40785587Sobrien changed true/false to True/False in run.c to make it 40885587Sobrien easier to compile with C++. Added some casts on malloc 40985587Sobrien and realloc to be honest about casts; ditto. changed 41085587Sobrien ltype int to long in struct rrow to reduce some 64-bit 41185587Sobrien complaints; other changes scattered throughout for the 41285587Sobrien same purpose. thanks to Nelson Beebe for these portability 41385587Sobrien improvements. 41485587Sobrien 41585587Sobrien removed some horrible pointer-int casting in b.c and elsewhere 41685587Sobrien by adding ptoi and itonp to localize the casts, which are 41785587Sobrien all benign. fixed one incipient bug that showed up on sgi 41885587Sobrien in 64-bit mode. 41985587Sobrien 42085587Sobrien reset lineno for new source file; include filename in error 42185587Sobrien message. also fixed line number error in continuation lines. 42285587Sobrien (thanks to Nelson Beebe for both of these.) 42385587Sobrien 42485587SobrienMar 24, 1999: 42585587Sobrien Nelson Beebe notes that irix 5.3 yacc dies with a bogus 42685587Sobrien error; use a newer version or switch to bison, since sgi 42785587Sobrien is unlikely to fix it. 42885587Sobrien 42985587SobrienMar 5, 1999: 43085587Sobrien changed isnumber to is_number to avoid the problem caused by 43185587Sobrien versions of ctype.h that include the name isnumber. 43285587Sobrien 43385587Sobrien distribution now includes a script for building on a Mac, 43485587Sobrien thanks to Dan Allen. 43585587Sobrien 43685587SobrienFeb 20, 1999: 43785587Sobrien fixed memory leaks in run.c (call) and tran.c (setfval). 43885587Sobrien thanks to Stephen Nutt for finding these and providing the fixes. 43985587Sobrien 44085587SobrienJan 13, 1999: 44185587Sobrien replaced srand argument by (unsigned int) in run.c; 44285587Sobrien avoids problem on Mac and potentially on Unix & Windows. 44385587Sobrien thanks to Dan Allen. 44485587Sobrien 44585587Sobrien added a few (int) casts to silence useless compiler warnings. 44685587Sobrien e.g., errorflag= in run.c jump(). 44785587Sobrien 44885587Sobrien added proctab.c to the bundle outout; one less thing 44985587Sobrien to have to compile out of the box. 45085587Sobrien 45185587Sobrien added calls to _popen and _pclose to the win95 stub for 45285587Sobrien pipes (thanks to Steve Adams for this helpful suggestion). 45385587Sobrien seems to work, though properties are not well understood 45485587Sobrien by me, and it appears that under some circumstances the 45585587Sobrien pipe output is truncated. Be careful. 45685587Sobrien 45785587SobrienOct 19, 1998: 45885587Sobrien fixed a couple of bugs in getrec: could fail to update $0 45985587Sobrien after a getline var; because inputFS wasn't initialized, 46085587Sobrien could split $0 on every character, a misleading diversion. 46185587Sobrien 46285587Sobrien fixed caching bug in makedfa: LRU was actually removing 46385587Sobrien least often used. 46485587Sobrien 46585587Sobrien thanks to ross ridge for finding these, and for providing 46685587Sobrien great bug reports. 46785587Sobrien 46885587SobrienMay 12, 1998: 46985587Sobrien fixed potential bug in readrec: might fail to update record 47085587Sobrien pointer after growing. thanks to dan levy for spotting this 47185587Sobrien and suggesting the fix. 47285587Sobrien 47385587SobrienMar 12, 1998: 47485587Sobrien added -V to print version number and die. 47585587Sobrien 47685587SobrienFeb 11, 1998: 47785587Sobrien subtle silent bug in lex.c: if the program ended with a number 47885587Sobrien longer than 1 digit, part of the input would be pushed back and 47985587Sobrien parsed again because token buffer wasn't terminated right. 48085587Sobrien example: awk 'length($0) > 10'. blush. at least i found it 48185587Sobrien myself. 48285587Sobrien 48385587SobrienAug 31, 1997: 48485587Sobrien s/adelete/awkdelete/: SGI uses this in malloc.h. 48585587Sobrien thanks to nelson beebe for pointing this one out. 48685587Sobrien 48785587SobrienAug 21, 1997: 48885587Sobrien fixed some bugs in sub and gsub when replacement includes \\. 48985587Sobrien this is a dark, horrible corner, but at least now i believe that 49085587Sobrien the behavior is the same as gawk and the intended posix standard. 49185587Sobrien thanks to arnold robbins for advice here. 49285587Sobrien 49385587SobrienAug 9, 1997: 49485587Sobrien somewhat regretfully, replaced the ancient lex-based lexical 49585587Sobrien analyzer with one written in C. it's longer, generates less code, 49685587Sobrien and more portable; the old one depended too much on mysterious 49785587Sobrien properties of lex that were not preserved in other environments. 49885587Sobrien in theory these recognize the same language. 49985587Sobrien 50085587Sobrien now using strtod to test whether a string is a number, instead of 50185587Sobrien the convoluted original function. should be more portable and 50285587Sobrien reliable if strtod is implemented right. 50385587Sobrien 50485587Sobrien removed now-pointless optimization in makefile that tries to avoid 50585587Sobrien recompilation when awkgram.y is changed but symbols are not. 50685587Sobrien 50785587Sobrien removed most fixed-size arrays, though a handful remain, some 50885587Sobrien of which are unchecked. you have been warned. 50985587Sobrien 51085587SobrienAug 4, 1997: 51185587Sobrien with some trepidation, replaced the ancient code that managed 51285587Sobrien fields and $0 in fixed-size arrays with arrays that grow on 51385587Sobrien demand. there is still some tension between trying to make this 51485587Sobrien run fast and making it clean; not sure it's right yet. 51585587Sobrien 51685587Sobrien the ill-conceived -mr and -mf arguments are now useful only 51785587Sobrien for debugging. previous dynamic string code removed. 51885587Sobrien 51985587Sobrien numerous other minor cleanups along the way. 52085587Sobrien 52185587SobrienJul 30, 1997: 52285587Sobrien using code provided by dan levy (to whom profuse thanks), replaced 52385587Sobrien fixed-size arrays and awkward kludges by a fairly uniform mechanism 52485587Sobrien to grow arrays as needed for printf, sub, gsub, etc. 52585587Sobrien 52685587SobrienJul 23, 1997: 52785587Sobrien falling off the end of a function returns "" and 0, not 0. 52885587Sobrien thanks to arnold robbins. 52985587Sobrien 53085587SobrienJun 17, 1997: 53185587Sobrien replaced several fixed-size arrays by dynamically-created ones 53285587Sobrien in run.c; added overflow tests to some previously unchecked cases. 53385587Sobrien getline, toupper, tolower. 53485587Sobrien 53585587Sobrien getline code is still broken in that recursive calls may wind 53685587Sobrien up using the same space. [fixed later] 53785587Sobrien 53885587Sobrien increased RECSIZE to 8192 to push problems further over the horizon. 53985587Sobrien 54085587Sobrien added \r to \n as input line separator for programs, not data. 54185587Sobrien damn CRLFs. 54285587Sobrien 54385587Sobrien modified format() to permit explicit printf("%c", 0) to include 54485587Sobrien a null byte in output. thanks to ken stailey for the fix. 54585587Sobrien 54685587Sobrien added a "-safe" argument that disables file output (print >, 54785587Sobrien print >>), process creation (cmd|getline, print |, system), and 54885587Sobrien access to the environment (ENVIRON). this is a first approximation 54985587Sobrien to a "safe" version of awk, but don't rely on it too much. thanks 55085587Sobrien to joan feigenbaum and matt blaze for the inspiration long ago. 55185587Sobrien 55285587SobrienJul 8, 1996: 55385587Sobrien fixed long-standing bug in sub, gsub(/a/, "\\\\&"); thanks to 55485587Sobrien ralph corderoy. 55585587Sobrien 55685587SobrienJun 29, 1996: 55785587Sobrien fixed awful bug in new field splitting; didn't get all the places 55885587Sobrien where input was done. 55985587Sobrien 56085587SobrienJun 28, 1996: 56185587Sobrien changed field-splitting to conform to posix definition: fields are 56285587Sobrien split using the value of FS at the time of input; it used to be 56385587Sobrien the value when the field or NF was first referred to, a much less 56485587Sobrien predictable definition. thanks to arnold robbins for encouragement 56585587Sobrien to do the right thing. 56685587Sobrien 56785587SobrienMay 28, 1996: 56885587Sobrien fixed appalling but apparently unimportant bug in parsing octal 56985587Sobrien numbers in reg exprs. 57085587Sobrien 57185587Sobrien explicit hex in reg exprs now limited to 2 chars: \xa, \xaa. 57285587Sobrien 57385587SobrienMay 27, 1996: 57485587Sobrien cleaned up some declarations so gcc -Wall is now almost silent. 57585587Sobrien 57685587Sobrien makefile now includes backup copies of ytab.c and lexyy.c in case 57785587Sobrien one makes before looking; it also avoids recreating lexyy.c unless 57885587Sobrien really needed. 57985587Sobrien 58085587Sobrien s/aprintf/awkprint, s/asprintf/awksprintf/ to avoid some name clashes 58185587Sobrien with unwisely-written header files. 58285587Sobrien 58385587Sobrien thanks to jeffrey friedl for several of these. 58485587Sobrien 58585587SobrienMay 26, 1996: 58685587Sobrien an attempt to rationalize the (unsigned) char issue. almost all 58785587Sobrien instances of unsigned char have been removed; the handful of places 58885587Sobrien in b.c where chars are used as table indices have been hand-crafted. 58985587Sobrien added some latin-1 tests to the regression, but i'm not confident; 59085587Sobrien none of my compilers seem to care much. thanks to nelson beebe for 59185587Sobrien pointing out some others that do care. 59285587Sobrien 59385587SobrienMay 2, 1996: 59485587Sobrien removed all register declarations. 59585587Sobrien 59685587Sobrien enhanced split(), as in gawk, etc: split(s, a, "") splits s into 59785587Sobrien a[1]...a[length(s)] with each character a single element. 59885587Sobrien 59985587Sobrien made the same changes for field-splitting if FS is "". 60085587Sobrien 60185587Sobrien added nextfile, as in gawk: causes immediate advance to next 60285587Sobrien input file. (thanks to arnold robbins for inspiration and code). 60385587Sobrien 60485587Sobrien small fixes to regexpr code: can now handle []], [[], and 60585587Sobrien variants; [] is now a syntax error, rather than matching 60685587Sobrien everything; [z-a] is now empty, not z. far from complete 60785587Sobrien or correct, however. (thanks to jeffrey friedl for pointing out 60885587Sobrien some awful behaviors.) 60985587Sobrien 61085587SobrienApr 29, 1996: 611146299Sru replaced uchar by uschar everywhere; apparently some compilers 61285587Sobrien usurp this name and this causes conflicts. 61385587Sobrien 61485587Sobrien fixed call to time in run.c (bltin); arg is time_t *. 61585587Sobrien 61685587Sobrien replaced horrible pointer/long punning in b.c by a legitimate 61785587Sobrien union. should be safer on 64-bit machines and cleaner everywhere. 61885587Sobrien (thanks to nelson beebe for pointing out some of these problems.) 61985587Sobrien 62085587Sobrien replaced nested comments by #if 0...#endif in run.c, lib.c. 62185587Sobrien 62285587Sobrien removed getsval, setsval, execute macros from run.c and lib.c. 62385587Sobrien machines are 100x faster than they were when these macros were 62485587Sobrien first used. 62585587Sobrien 62685587Sobrien revised filenames: awk.g.y => awkgram.y, awk.lx.l => awklex.l, 62785587Sobrien y.tab.[ch] => ytab.[ch], lex.yy.c => lexyy.c, all in the aid of 62885587Sobrien portability to nameless systems. 62985587Sobrien 63085587Sobrien "make bundle" now includes yacc and lex output files for recipients 63185587Sobrien who don't have yacc or lex. 63285587Sobrien 63385587SobrienAug 15, 1995: 63485587Sobrien initialized Cells in setsymtab more carefully; some fields 63585587Sobrien were not set. (thanks to purify, all of whose complaints i 63685587Sobrien think i now understand.) 63785587Sobrien 63885587Sobrien fixed at least one error in gsub that looked at -1-th element 63985587Sobrien of an array when substituting for a null match (e.g., $). 64085587Sobrien 64185587Sobrien delete arrayname is now legal; it clears the elements but leaves 64285587Sobrien the array, which may not be the right behavior. 64385587Sobrien 64485587Sobrien modified makefile: my current make can't cope with the test used 64585587Sobrien to avoid unnecessary yacc invocations. 64685587Sobrien 64785587SobrienJul 17, 1995: 64885587Sobrien added dynamically growing strings to awk.lx.l and b.c 64985587Sobrien to permit regular expressions to be much bigger. 65085587Sobrien the state arrays can still overflow. 65185587Sobrien 65285587SobrienAug 24, 1994: 65385587Sobrien detect duplicate arguments in function definitions (mdm). 65485587Sobrien 65585587SobrienMay 11, 1994: 65685587Sobrien trivial fix to printf to limit string size in sub(). 65785587Sobrien 65885587SobrienApr 22, 1994: 65985587Sobrien fixed yet another subtle self-assignment problem: 66085587Sobrien $1 = $2; $1 = $1 clobbered $1. 66185587Sobrien 66285587Sobrien Regression tests now use private echo, to avoid quoting problems. 66385587Sobrien 66485587SobrienFeb 2, 1994: 66585587Sobrien changed error() to print line number as %d, not %g. 66685587Sobrien 66785587SobrienJul 23, 1993: 66885587Sobrien cosmetic changes: increased sizes of some arrays, 66985587Sobrien reworded some error messages. 67085587Sobrien 67185587Sobrien added CONVFMT as in posix (just replaced OFMT in getsval) 67285587Sobrien 67385587Sobrien FILENAME is now "" until the first thing that causes a file 67485587Sobrien to be opened. 67585587Sobrien 67685587SobrienNov 28, 1992: 67785587Sobrien deleted yyunput and yyoutput from proto.h; 67885587Sobrien different versions of lex give these different declarations. 67985587Sobrien 68085587SobrienMay 31, 1992: 68185587Sobrien added -mr N and -mf N options: more record and fields. 68285587Sobrien these really ought to adjust automatically. 68385587Sobrien 68485587Sobrien cleaned up some error messages; "out of space" now means 68585587Sobrien malloc returned NULL in all cases. 68685587Sobrien 68785587Sobrien changed rehash so that if it runs out, it just returns; 68885587Sobrien things will continue to run slow, but maybe a bit longer. 68985587Sobrien 69085587SobrienApr 24, 1992: 69185587Sobrien remove redundant close of stdin when using -f -. 69285587Sobrien 69385587Sobrien got rid of core dump with -d; awk -d just prints date. 69485587Sobrien 69585587SobrienApr 12, 1992: 69685587Sobrien added explicit check for /dev/std(in,out,err) in redirection. 69785587Sobrien unlike gawk, no /dev/fd/n yet. 69885587Sobrien 69985587Sobrien added (file/pipe) builtin. hard to test satisfactorily. 70085587Sobrien not posix. 70185587Sobrien 70285587SobrienFeb 20, 1992: 70385587Sobrien recompile after abortive changes; should be unchanged. 70485587Sobrien 70585587SobrienDec 2, 1991: 70685587Sobrien die-casting time: converted to ansi C, installed that. 70785587Sobrien 70885587SobrienNov 30, 1991: 70985587Sobrien fixed storage leak in freefa, failing to recover [N]CCL. 71085587Sobrien thanks to Bill Jones (jones@cs.usask.ca) 71185587Sobrien 71285587SobrienNov 19, 1991: 71385587Sobrien use RAND_MAX instead of literal in builtin(). 71485587Sobrien 71585587SobrienNov 12, 1991: 71685587Sobrien cranked up some fixed-size arrays in b.c, and added a test for 71785587Sobrien overflow in penter. thanks to mark larsen. 71885587Sobrien 71985587SobrienSep 24, 1991: 72085587Sobrien increased buffer in gsub. a very crude fix to a general problem. 72185587Sobrien and again on Sep 26. 72285587Sobrien 72385587SobrienAug 18, 1991: 72485587Sobrien enforce variable name syntax for commandline variables: has to 72585587Sobrien start with letter or _. 72685587Sobrien 72785587SobrienJul 27, 1991: 72885587Sobrien allow newline after ; in for statements. 72985587Sobrien 73085587SobrienJul 21, 1991: 73185587Sobrien fixed so that in self-assignment like $1=$1, side effects 73285587Sobrien like recomputing $0 take place. (this is getting subtle.) 73385587Sobrien 73485587SobrienJun 30, 1991: 73585587Sobrien better test for detecting too-long output record. 73685587Sobrien 73785587SobrienJun 2, 1991: 73885587Sobrien better defense against very long printf strings. 73985587Sobrien made break and continue illegal outside of loops. 74085587Sobrien 74185587SobrienMay 13, 1991: 74285587Sobrien removed extra arg on gettemp, tempfree. minor error message rewording. 74385587Sobrien 74485587SobrienMay 6, 1991: 74585587Sobrien fixed silly bug in hex parsing in hexstr(). 74685587Sobrien removed an apparently unnecessary test in isnumber(). 74785587Sobrien warn about weird printf conversions. 74885587Sobrien fixed unchecked array overwrite in relex(). 74985587Sobrien 75085587Sobrien changed for (i in array) to access elements in sorted order. 75185587Sobrien then unchanged it -- it really does run slower in too many cases. 75285587Sobrien left the code in place, commented out. 75385587Sobrien 75485587SobrienFeb 10, 1991: 75585587Sobrien check error status on all writes, to avoid banging on full disks. 75685587Sobrien 75785587SobrienJan 28, 1991: 75885587Sobrien awk -f - reads the program from stdin. 75985587Sobrien 76085587SobrienJan 11, 1991: 76185587Sobrien failed to set numeric state on $0 in cmd|getline context in run.c. 76285587Sobrien 76385587SobrienNov 2, 1990: 76485587Sobrien fixed sleazy test for integrality in getsval; use modf. 76585587Sobrien 76685587SobrienOct 29, 1990: 76785587Sobrien fixed sleazy buggy code in lib.c that looked (incorrectly) for 76885587Sobrien too long input lines. 76985587Sobrien 77085587SobrienOct 14, 1990: 77185587Sobrien fixed the bug on p. 198 in which it couldn't deduce that an 77285587Sobrien argument was an array in some contexts. replaced the error 77385587Sobrien message in intest() by code that damn well makes it an array. 77485587Sobrien 77585587SobrienOct 8, 1990: 77685587Sobrien fixed horrible bug: types and values were not preserved in 77785587Sobrien some kinds of self-assignment. (in assign().) 77885587Sobrien 77985587SobrienAug 24, 1990: 78085587Sobrien changed NCHARS to 256 to handle 8-bit characters in strings 78185587Sobrien presented to match(), etc. 78285587Sobrien 78385587SobrienJun 26, 1990: 78485587Sobrien changed struct rrow (awk.h) to use long instead of int for lval, 78585587Sobrien since cfoll() stores a pointer in it. now works better when int's 78685587Sobrien are smaller than pointers! 78785587Sobrien 78885587SobrienMay 6, 1990: 78985587Sobrien AVA fixed the grammar so that ! is uniformly of the same precedence as 79085587Sobrien unary + and -. This renders illegal some constructs like !x=y, which 79185587Sobrien now has to be parenthesized as !(x=y), and makes others work properly: 79285587Sobrien !x+y is (!x)+y, and x!y is x !y, not two pattern-action statements. 79385587Sobrien (These problems were pointed out by Bob Lenk of Posix.) 79485587Sobrien 79585587Sobrien Added \x to regular expressions (already in strings). 79685587Sobrien Limited octal to octal digits; \8 and \9 are not octal. 79785587Sobrien Centralized the code for parsing escapes in regular expressions. 79885587Sobrien Added a bunch of tests to T.re and T.sub to verify some of this. 79985587Sobrien 80085587SobrienFeb 9, 1990: 80185587Sobrien fixed null pointer dereference bug in main.c: -F[nothing]. sigh. 80285587Sobrien 80385587Sobrien restored srand behavior: it returns the current seed. 80485587Sobrien 80585587SobrienJan 18, 1990: 80685587Sobrien srand now returns previous seed value (0 to start). 80785587Sobrien 80885587SobrienJan 5, 1990: 80985587Sobrien fix potential problem in tran.c -- something was freed, 81085587Sobrien then used in freesymtab. 81185587Sobrien 81285587SobrienOct 18, 1989: 81385587Sobrien another try to get the max number of open files set with 81485587Sobrien relatively machine-independent code. 81585587Sobrien 81685587Sobrien small fix to input() in case of multiple reads after EOF. 81785587Sobrien 81885587SobrienOct 11, 1989: 81985587Sobrien FILENAME is now defined in the BEGIN block -- too many old 82085587Sobrien programs broke. 82185587Sobrien 82285587Sobrien "-" means stdin in getline as well as on the commandline. 82385587Sobrien 82485587Sobrien added a bunch of casts to the code to tell the truth about 82585587Sobrien char * vs. unsigned char *, a right royal pain. added a 82685587Sobrien setlocale call to the front of main, though probably no one 82785587Sobrien has it usefully implemented yet. 82885587Sobrien 82985587SobrienAug 24, 1989: 83085587Sobrien removed redundant relational tests against nullnode if parse 83185587Sobrien tree already had a relational at that point. 83285587Sobrien 83385587SobrienAug 11, 1989: 83485587Sobrien fixed bug: commandline variable assignment has to look like 83585587Sobrien var=something. (consider the man page for =, in file =.1) 83685587Sobrien 83785587Sobrien changed number of arguments to functions to static arrays 83885587Sobrien to avoid repeated malloc calls. 83985587Sobrien 84085587SobrienAug 2, 1989: 84185587Sobrien restored -F (space) separator 84285587Sobrien 84385587SobrienJul 30, 1989: 84485587Sobrien added -v x=1 y=2 ... for immediate commandline variable assignment; 84585587Sobrien done before the BEGIN block for sure. they have to precede the 84685587Sobrien program if the program is on the commandline. 84785587Sobrien Modified Aug 2 to require a separate -v for each assignment. 84885587Sobrien 84985587SobrienJul 10, 1989: 85085587Sobrien fixed ref-thru-zero bug in environment code in tran.c 85185587Sobrien 85285587SobrienJun 23, 1989: 85385587Sobrien add newline to usage message. 85485587Sobrien 85585587SobrienJun 14, 1989: 85685587Sobrien added some missing ansi printf conversion letters: %i %X %E %G. 85785587Sobrien no sensible meaning for h or L, so they may not do what one expects. 85885587Sobrien 85985587Sobrien made %* conversions work. 86085587Sobrien 86185587Sobrien changed x^y so that if n is a positive integer, it's done 86285587Sobrien by explicit multiplication, thus achieving maximum accuracy. 86385587Sobrien (this should be done by pow() but it seems not to be locally.) 86485587Sobrien done to x ^= y as well. 86585587Sobrien 86685587SobrienJun 4, 1989: 86785587Sobrien ENVIRON array contains environment: if shell variable V=thing, 86885587Sobrien ENVIRON["V"] is "thing" 86985587Sobrien 87085587Sobrien multiple -f arguments permitted. error reporting is naive. 87185587Sobrien (they were permitted before, but only the last was used.) 87285587Sobrien 87385587Sobrien fixed a really stupid botch in the debugging macro dprintf 87485587Sobrien 87585587Sobrien fixed order of evaluation of commandline assignments to match 87685587Sobrien what the book claims: an argument of the form x=e is evaluated 87785587Sobrien at the time it would have been opened if it were a filename (p 63). 87885587Sobrien this invalidates the suggested answer to ex 4-1 (p 195). 87985587Sobrien 88085587Sobrien removed some code that permitted -F (space) fieldseparator, 88185587Sobrien since it didn't quite work right anyway. (restored aug 2) 88285587Sobrien 88385587SobrienApr 27, 1989: 88485587Sobrien Line number now accumulated correctly for comment lines. 88585587Sobrien 88685587SobrienApr 26, 1989: 88785587Sobrien Debugging output now includes a version date, 88885587Sobrien if one compiles it into the source each time. 88985587Sobrien 89085587SobrienApr 9, 1989: 89185587Sobrien Changed grammar to prohibit constants as 3rd arg of sub and gsub; 89285587Sobrien prevents class of overwriting-a-constant errors. (Last one?) 89385587Sobrien This invalidates the "banana" example on page 43 of the book. 89485587Sobrien 89585587Sobrien Added \a ("alert"), \v (vertical tab), \xhhh (hexadecimal), 89685587Sobrien as in ANSI, for strings. Rescinded the sloppiness that permitted 89785587Sobrien non-octal digits in \ooo. Warning: not all compilers and libraries 89885587Sobrien will be able to deal with \x correctly. 89985587Sobrien 90085587SobrienJan 9, 1989: 90185587Sobrien Fixed bug that caused tempcell list to contain a duplicate. 90285587Sobrien The fix is kludgy. 90385587Sobrien 90485587SobrienDec 17, 1988: 90585587Sobrien Catches some more commandline errors in main. 90685587Sobrien Removed redundant decl of modf in run.c (confuses some compilers). 90785587Sobrien Warning: there's no single declaration of malloc, etc., in awk.h 90885587Sobrien that seems to satisfy all compilers. 90985587Sobrien 91085587SobrienDec 7, 1988: 91185587Sobrien Added a bit of code to error printing to avoid printing nulls. 91285587Sobrien (Not clear that it actually would.) 91385587Sobrien 91485587SobrienNov 27, 1988: 91585587Sobrien With fear and trembling, modified the grammar to permit 91685587Sobrien multiple pattern-action statements on one line without 91785587Sobrien an explicit separator. By definition, this capitulation 91885587Sobrien to the ghost of ancient implementations remains undefined 91985587Sobrien and thus subject to change without notice or apology. 92085587Sobrien DO NOT COUNT ON IT. 92185587Sobrien 92285587SobrienOct 30, 1988: 92385587Sobrien Fixed bug in call() that failed to recover storage. 92485587Sobrien 92585587Sobrien A warning is now generated if there are more arguments 92685587Sobrien in the call than in the definition (in lieu of fixing 92785587Sobrien another storage leak). 92885587Sobrien 92985587SobrienOct 20, 1988: 93085587Sobrien Fixed %c: if expr is numeric, use numeric value; 93185587Sobrien otherwise print 1st char of string value. still 93285587Sobrien doesn't work if the value is 0 -- won't print \0. 93385587Sobrien 93485587Sobrien Added a few more checks for running out of malloc. 93585587Sobrien 93685587SobrienOct 12, 1988: 93785587Sobrien Fixed bug in call() that freed local arrays twice. 93885587Sobrien 93985587Sobrien Fixed to handle deletion of non-existent array right; 94085587Sobrien complains about attempt to delete non-array element. 94185587Sobrien 94285587SobrienSep 30, 1988: 94385587Sobrien Now guarantees to evaluate all arguments of built-in 94485587Sobrien functions, as in C; the appearance is that arguments 94585587Sobrien are evaluated before the function is called. Places 94685587Sobrien affected are sub (gsub was ok), substr, printf, and 94785587Sobrien all the built-in arithmetic functions in bltin(). 94885587Sobrien A warning is generated if a bltin() is called with 94985587Sobrien the wrong number of arguments. 95085587Sobrien 95185587Sobrien This requires changing makeprof on p167 of the book. 95285587Sobrien 95385587SobrienAug 23, 1988: 95485587Sobrien setting FILENAME in BEGIN caused core dump, apparently 95585587Sobrien because it was freeing space not allocated by malloc. 95685587Sobrien 95785587SobrienJuly 24, 1988: 95885587Sobrien fixed egregious error in toupper/tolower functions. 95985587Sobrien still subject to rescinding, however. 96085587Sobrien 96185587SobrienJuly 2, 1988: 96285587Sobrien flush stdout before opening file or pipe 96385587Sobrien 96485587SobrienJuly 2, 1988: 96585587Sobrien performance bug in b.c/cgoto(): not freeing some sets of states. 96685587Sobrien partial fix only right now, and the number of states increased 96785587Sobrien to make it less obvious. 96885587Sobrien 96985587SobrienJune 1, 1988: 97085587Sobrien check error status on close 97185587Sobrien 97285587SobrienMay 28, 1988: 97385587Sobrien srand returns seed value it's using. 97485587Sobrien see 1/18/90 97585587Sobrien 97685587SobrienMay 22, 1988: 97785587Sobrien Removed limit on depth of function calls. 97885587Sobrien 97985587SobrienMay 10, 1988: 98085587Sobrien Fixed lib.c to permit _ in commandline variable names. 98185587Sobrien 98285587SobrienMar 25, 1988: 98385587Sobrien main.c fixed to recognize -- as terminator of command- 98485587Sobrien line options. Illegal options flagged. 98585587Sobrien Error reporting slightly cleaned up. 98685587Sobrien 98785587SobrienDec 2, 1987: 98885587Sobrien Newer C compilers apply a strict scope rule to extern 98985587Sobrien declarations within functions. Two extern declarations in 99085587Sobrien lib.c and tran.c have been moved to obviate this problem. 99185587Sobrien 99285587SobrienOct xx, 1987: 99385587Sobrien Reluctantly added toupper and tolower functions. 99485587Sobrien Subject to rescinding without notice. 99585587Sobrien 99685587SobrienSep 17, 1987: 99785587Sobrien Error-message printer had printf(s) instead of 99885587Sobrien printf("%s",s); got core dumps when the message 99985587Sobrien included a %. 100085587Sobrien 100185587SobrienSep 12, 1987: 100285587Sobrien Very long printf strings caused core dump; 100385587Sobrien fixed aprintf, asprintf, format to catch them. 100485587Sobrien Can still get a core dump in printf itself. 100585587Sobrien 100685587Sobrien 1007