Re: FreeBSD awk behavior change proposal
"Rodney W. Grimes" <[email protected]>
| Newsgroups | gmane.os.freebsd.architechture |
|---|---|
| Message-ID | <[email protected]> |
> Greetings, > > I've posted https://reviews.freebsd.org/D31114 which eliminates the last > delta we have from upstream one-true-awk. This delta has basically been > rejected by upstream as being a really bad idea. Let me give some > background. > > In 2005, FreeBSD changed one-true-awk to honor the locale's collating order. > https://svnweb.freebsd.org/base/head/usr.bin/awk/b.c.diff?annotate=146322&pathrev=201988 > This was billed as a temporary patch. It was also compatible with > the then-current behavior of gawk. That temporary patch has lasted 16 > years now. > > However, IEEE Std 1003.1-2008 changed the behaivor of ranges in regular > expressions outside of the "C" and "POSIX" locales to be undefined. > > Starting in 2011, gawk 4.0 stopped using the locale for the range > regular expressions and used the traditional behavior only. The > maintainer had grown weary of answering why '[A-Z]' would sometimes > match lower-case expressions. The details about are explained here: > https://www.gnu.org/software/gawk/manual/html_node/Ranges-and-Locales.html > > To restore compatibility with other implementaitons of awk, revert this > patch. FreeBSD is the odd-system out. It also has the nice side effect > of eliminating the last of our differences with upstream one-true-awk. > > I'd like to commit the change at least to -current. Ideally, I'd like to MFC > the change. I believe better compatibility with gawk and other awk > implementations justifies this change in behavior because the current > behavior is outside the mainstream enough to be considered a bug. > > I'd like to solicit input before I do this, however. My only concern on this is does anything in the ports system get tickled by this change, I know its a pita, but maybe have an exp run done? I reviewed and accepted the differential, and by examination I do not see how this could cause an issue now, so Meh give it a long back in -current and things should be ok. > Warner -- Rod Grimes [email protected]