WHATSNEW revision 1.3
11.3SjtcNew in alpha3.3: The definition of word boundaries has been altered 21.3Sjtcslightly, to more closely match the usual programming notion that "_" 31.3Sjtcis an alphabetic. Stuff used for pre-ANSI systems is now in a subdir, 41.3Sjtcand the makefile no longer alludes to it in mysterious ways. The 51.3Sjtcmakefile has generally been cleaned up some. Fixes have been made 61.3Sjtc(again!) so that the regression test will run without -DREDEBUG, at 71.3Sjtcthe cost of weaker checking. A workaround for a bug in some folks' 81.3Sjtc<assert.h> has been added. And some more things have been added to 91.3Sjtctests, including a couple right at the end which are commented out 101.3Sjtcbecause the code currently flunks them (complex bug; fix coming). 111.3SjtcPlus the usual minor cleanup. 121.3Sjtc 131.2SjtcNew in alpha3.2: Assorted bits of cleanup and portability improvement 141.2Sjtc(the development base is now a BSDI system using GCC instead of an ancient 151.2SjtcSun system, and the newer compiler exposed some glitches). Fix for a 161.2Sjtcserious bug that affected REs using many [] (including REG_ICASE REs 171.2Sjtcbecause of the way they are implemented), *sometimes*, depending on 181.2Sjtcmemory-allocation patterns. The header-file prototypes no longer name 191.2Sjtcthe parameters, avoiding possible name conflicts. The possibility that 201.2Sjtcsome clot has defined CHAR_MIN as (say) `-128' instead of `(-128)' is 211.2Sjtcnow handled gracefully. "uchar" is no longer used as an internal type 221.2Sjtcname (too many people have the same idea). Still the same old lousy 231.2Sjtcperformance, alas. 241.2Sjtc 251.1SjtcNew in alpha3.1: Basically nothing, this release is just a bookkeeping 261.1Sjtcconvenience. Stay tuned. 271.1Sjtc 281.1SjtcNew in alpha3.0: Performance is no better, alas, but some fixes have been 291.1Sjtcmade and some functionality has been added. (This is basically the "get 301.1Sjtcit out the door in time for 4.4" release.) One bug fix: regfree() didn't 311.1Sjtcfree the main internal structure (how embarrassing). It is now possible 321.1Sjtcto put NULs in either the RE or the target string, using (resp.) a new 331.1SjtcREG_PEND flag and the old REG_STARTEND flag. The REG_NOSPEC flag to 341.1Sjtcregcomp() makes all characters ordinary, so you can match a literal 351.1Sjtcstring easily (this will become more useful when performance improves!). 361.1SjtcThere are now primitives to match beginnings and ends of words, although 371.1Sjtcthe syntax is disgusting and so is the implementation. The REG_ATOI 381.1Sjtcdebugging interface has changed a bit. And there has been considerable 391.1Sjtcinternal cleanup of various kinds. 401.1Sjtc 411.1SjtcNew in alpha2.3: Split change list out of README, and moved flags notes 421.1Sjtcinto Makefile. Macro-ized the name of regex(7) in regex(3), since it has 431.1Sjtcto change for 4.4BSD. Cleanup work in engine.c, and some new regression 441.1Sjtctests to catch tricky cases thereof. 451.1Sjtc 461.1SjtcNew in alpha2.2: Out-of-date manpages updated. Regerror() acquires two 471.1Sjtcsmall extensions -- REG_ITOA and REG_ATOI -- which avoid debugging kludges 481.1Sjtcin my own test program and might be useful to others for similar purposes. 491.1SjtcThe regression test will now compile (and run) without REDEBUG. The 501.1SjtcBRE \$ bug is fixed. Most uses of "uchar" are gone; it's all chars now. 511.1SjtcChar/uchar parameters are now written int/unsigned, to avoid possible 521.1Sjtcportability problems with unpromoted parameters. Some unsigned casts have 531.1Sjtcbeen introduced to minimize portability problems with shifting into sign 541.1Sjtcbits. 551.1Sjtc 561.1SjtcNew in alpha2.1: Lots of little stuff, cleanup and fixes. The one big 571.1Sjtcthing is that regex.h is now generated, using mkh, rather than being 581.1Sjtcsupplied in the distribution; due to circularities in dependencies, 591.1Sjtcyou have to build regex.h explicitly by "make h". The two known bugs 601.1Sjtchave been fixed (and the regression test now checks for them), as has a 611.1Sjtcproblem with assertions not being suppressed in the absence of REDEBUG. 621.1SjtcNo performance work yet. 631.1Sjtc 641.1SjtcNew in alpha2: Backslash-anything is an ordinary character, not an 651.1Sjtcerror (except, of course, for the handful of backslashed metacharacters 661.1Sjtcin BREs), which should reduce script breakage. The regression test 671.1Sjtcchecks *where* null strings are supposed to match, and has generally 681.1Sjtcbeen tightened up somewhat. Small bug fixes in parameter passing (not 691.1Sjtcharmful, but technically errors) and some other areas. Debugging 701.1Sjtcinvoked by defining REDEBUG rather than not defining NDEBUG. 711.1Sjtc 721.1SjtcNew in alpha+3: full prototyping for internal routines, using a little 731.1Sjtchelper program, mkh, which extracts prototypes given in stylized comments. 741.1SjtcMore minor cleanup. Buglet fix: it's CHAR_BIT, not CHAR_BITS. Simple 751.1Sjtcpre-screening of input when a literal string is known to be part of the 761.1SjtcRE; this does wonders for performance. 771.1Sjtc 781.1SjtcNew in alpha+2: minor bits of cleanup. Notably, the number "32" for the 791.1Sjtcword width isn't hardwired into regexec.c any more, the public header 801.1Sjtcfile prototypes the functions if __STDC__ is defined, and some small typos 811.1Sjtcin the manpages have been fixed. 821.1Sjtc 831.1SjtcNew in alpha+1: improvements to the manual pages, and an important 841.1Sjtcextension, the REG_STARTEND option to regexec(). 85