1New in alpha3.2: Assorted bits of cleanup and portability improvement 2(the development base is now a BSDI system using GCC instead of an ancient 3Sun system, and the newer compiler exposed some glitches). Fix for a 4serious bug that affected REs using many [] (including REG_ICASE REs 5because of the way they are implemented), *sometimes*, depending on 6memory-allocation patterns. The header-file prototypes no longer name 7the parameters, avoiding possible name conflicts. The possibility that 8some clot has defined CHAR_MIN as (say) `-128' instead of `(-128)' is 9now handled gracefully. "uchar" is no longer used as an internal type 10name (too many people have the same idea). Still the same old lousy 11performance, alas. 12 13New in alpha3.1: Basically nothing, this release is just a bookkeeping 14convenience. Stay tuned. 15 16New in alpha3.0: Performance is no better, alas, but some fixes have been 17made and some functionality has been added. (This is basically the "get 18it out the door in time for 4.4" release.) One bug fix: regfree() didn't 19free the main internal structure (how embarrassing). It is now possible 20to put NULs in either the RE or the target string, using (resp.) a new 21REG_PEND flag and the old REG_STARTEND flag. The REG_NOSPEC flag to 22regcomp() makes all characters ordinary, so you can match a literal 23string easily (this will become more useful when performance improves!). 24There are now primitives to match beginnings and ends of words, although 25the syntax is disgusting and so is the implementation. The REG_ATOI 26debugging interface has changed a bit. And there has been considerable 27internal cleanup of various kinds. 28 29New in alpha2.3: Split change list out of README, and moved flags notes 30into Makefile. Macro-ized the name of regex(7) in regex(3), since it has 31to change for 4.4BSD. Cleanup work in engine.c, and some new regression 32tests to catch tricky cases thereof. 33 34New in alpha2.2: Out-of-date manpages updated. Regerror() acquires two 35small extensions -- REG_ITOA and REG_ATOI -- which avoid debugging kludges 36in my own test program and might be useful to others for similar purposes. 37The regression test will now compile (and run) without REDEBUG. The 38BRE \$ bug is fixed. Most uses of "uchar" are gone; it's all chars now. 39Char/uchar parameters are now written int/unsigned, to avoid possible 40portability problems with unpromoted parameters. Some unsigned casts have 41been introduced to minimize portability problems with shifting into sign 42bits. 43 44New in alpha2.1: Lots of little stuff, cleanup and fixes. The one big 45thing is that regex.h is now generated, using mkh, rather than being 46supplied in the distribution; due to circularities in dependencies, 47you have to build regex.h explicitly by "make h". The two known bugs 48have been fixed (and the regression test now checks for them), as has a 49problem with assertions not being suppressed in the absence of REDEBUG. 50No performance work yet. 51 52New in alpha2: Backslash-anything is an ordinary character, not an 53error (except, of course, for the handful of backslashed metacharacters 54in BREs), which should reduce script breakage. The regression test 55checks *where* null strings are supposed to match, and has generally 56been tightened up somewhat. Small bug fixes in parameter passing (not 57harmful, but technically errors) and some other areas. Debugging 58invoked by defining REDEBUG rather than not defining NDEBUG. 59 60New in alpha+3: full prototyping for internal routines, using a little 61helper program, mkh, which extracts prototypes given in stylized comments. 62More minor cleanup. Buglet fix: it's CHAR_BIT, not CHAR_BITS. Simple 63pre-screening of input when a literal string is known to be part of the 64RE; this does wonders for performance. 65 66New in alpha+2: minor bits of cleanup. Notably, the number "32" for the 67word width isn't hardwired into regexec.c any more, the public header 68file prototypes the functions if __STDC__ is defined, and some small typos 69in the manpages have been fixed. 70 71New in alpha+1: improvements to the manual pages, and an important 72extension, the REG_STARTEND option to regexec(). 73